Autonomous System details

AS2856

British Telecommunications PLC · bt.com

United Kingdom

Major ISP

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AS2856 – British Telecommunications PLC

Field	Value
Country	United Kingdom
Website	bt.com
Hosted domains	31,346
IPv4 addresses	13,815,552
IPv6 addresses	10,775,034,937,643,228,158,516,800,000,000
ASN type	ISP
Registry	ripe
Allocated	24 years ago on Aug 30, 2002
Updated	a year ago on May 15, 2025

Netblock	Company	Num of IPs
86.128.0.0/10	British Telecommunications PLC	4,194,304
81.128.0.0/11	British Telecommunications PLC	2,097,152
86.128.0.0/11	BT Infrastructure Layer	2,097,152
81.128.0.0/12	BT Infrastructure Layer	1,048,576
86.128.0.0/12	IP pools	1,048,576
109.144.0.0/12	British Telecommunications PLC	1,048,576
217.32.0.0/12	British Telecommunications PLC	1,048,576
31.48.0.0/13	British Telecommunications PLC	524,288
95.144.0.0/13	EE Limited	524,288
31.100.0.0/14	EE Limited	262,144
31.112.0.0/14	EE Limited	262,144
31.116.0.0/14	BTnet Assignments	262,144
147.148.0.0/14	British Telecommunications plc	262,144
194.72.0.0/14	British Telecommunications PLC	262,144
213.120.0.0/14	PROVIDER Local Internet Registry	262,144
5.80.0.0/15	British Telecommunications PLC	131,072
31.90.0.0/15	EE Limited	131,072
31.92.0.0/15	EE Limited	131,072
31.106.0.0/15	EE Limited	131,072
31.122.0.0/15	EE Limited	131,072
31.126.0.0/15	BT Retail	131,072
46.68.0.0/15	EE Limited	131,072
109.180.0.0/15	EE Limited	131,072
5.81.0.0/16	BT Infrastructure Layer	65,536
31.94.0.0/16	EE Limited	65,536
31.96.0.0/16	EE Limited	65,536
31.104.0.0/16	BT-CENTRAL-PLUS	65,536
31.116.0.0/16	EE Limited	65,536
31.117.0.0/16	EE Limited	65,536
31.118.0.0/16	EE Limited	65,536
31.119.0.0/16	BTnet Assignments	65,536
31.120.0.0/16	EE Limited	65,536
31.121.0.0/16	BTnet Assignments	65,536
31.124.0.0/16	EE Limited	65,536
51.14.0.0/16	BT-CENTRAL-PLUS	65,536
62.6.0.0/16	BT Infrastructure Layer	65,536
62.7.0.0/16	BT Infrastructure Layer	65,536
62.172.0.0/16	British Telecommunications PLC	65,536
62.239.0.0/16	British Telecommunications PLC	65,536
91.111.0.0/16	EE Limited	65,536
109.249.0.0/16	EE Limited	65,536
132.146.0.0/16	British Telecom	65,536
147.152.0.0/16	British Telecommunications plc	65,536
149.254.0.0/16	T-Mobile (UK) Limited	65,536
165.120.0.0/16	BT Public Internet Service	65,536
193.113.0.0/16	British Telecommunications PLC	65,536
195.99.0.0/16	British Telecommunications PLC	65,536
195.171.0.0/16	British Telecommunications PLC	65,536
212.140.0.0/16	British Telecommunications PLC	65,536
213.1.0.0/16	British Telecommunications PLC	65,536
144.87.128.0/18	Royal Mail Group Limited	16,384
213.205.192.0/18	EE Limited	16,384
84.23.0.0/19	i3 Digital Ltd	8,192
159.180.96.0/19	BT-CENTRAL-PLUS	8,192
193.38.192.0/19	Co-operative Group Limited	8,192
194.102.0.0/19	British Telecommunications PLC	8,192
195.218.32.0/19	British Telecommunications PLC	8,192
212.82.0.0/19	British Telecommunications PLC	8,192
51.230.0.0/20	Department for Work and Pensions	4,096
51.230.16.0/20	Department for Work and Pensions	4,096
51.230.32.0/20	Department for Work and Pensions	4,096
51.230.48.0/20	Department for Work and Pensions	4,096
51.230.64.0/20	Department for Work and Pensions	4,096
51.230.80.0/20	Department for Work and Pensions	4,096
51.230.96.0/20	Department for Work and Pensions	4,096
51.230.112.0/20	Department for Work and Pensions	4,096
85.88.224.0/20	The Cloud Simplified Limited	4,096
144.87.16.0/20	Royal Mail Group Limited	4,096
193.35.128.0/20	EE Limited	4,096
193.37.160.0/20	British Telecommunications PLC	4,096
213.205.208.0/20	Orange PCS GPRS Services	4,096
217.15.64.0/20	British Telecommunications PLC	4,096
5.35.192.0/21	Lunarnaut, LLC	2,048
51.194.40.0/21	Sky UK Limited	2,048
51.194.88.0/21	Sky UK Limited	2,048
51.194.104.0/21	Sky UK Limited	2,048
51.194.120.0/21	Sky UK Limited	2,048
82.108.32.0/21	GTT - EMEA Ltd.	2,048
87.237.16.0/21	EE Limited	2,048
94.72.248.0/21	KCOM BT sub-allocation	2,048
144.87.0.0/21	Royal Mail Group Limited	2,048
144.87.24.0/21	Royal Mail Group Limited	2,048
178.78.112.0/21	KCOM BT sub-allocation	2,048
178.78.120.0/21	KCOM BT sub-allocation	2,048
188.172.160.0/21	232web Internet Services	2,048
188.172.168.0/21	232web Internet Services	2,048
194.169.32.0/21	AgustaWestland Ltd	2,048
15.145.20.0/22	Amazon Data Services UK	1,024
37.97.112.0/22	Welt-Net Broadband	1,024
37.143.0.0/22	Internet Utilities Europe and Asia Limited	1,024
46.248.120.0/22	Burstfire Networks Ltd	1,024
51.146.40.0/22	Sky UK Limited	1,024
51.146.44.0/22	Sky UK Limited	1,024
51.146.56.0/22	Sky UK Limited	1,024
51.146.60.0/22	Sky UK Limited	1,024
51.146.128.0/22	Sky UK Limited	1,024
51.146.132.0/22	Sky UK Limited	1,024
51.146.136.0/22	Sky UK Limited	1,024
51.146.140.0/22	Sky UK Limited	1,024
72.9.180.0/22	TELUS Communications Inc.	1,024
81.161.52.0/22	Welt-Net Broadband	1,024
82.38.56.0/22	Private Customer	1,024
82.41.112.0/22	Private Customer	1,024
82.108.4.0/22	GTT - EMEA Ltd.	1,024
82.108.44.0/22	GTT - EMEA Ltd.	1,024
82.108.52.0/22	GTT - EMEA Ltd.	1,024
82.108.92.0/22	GTT - EMEA Ltd.	1,024
82.108.116.0/22	GTT - EMEA Ltd.	1,024
82.108.140.0/22	GTT - EMEA Ltd.	1,024
85.204.160.0/22	Lunarnaut, LLC	1,024
94.232.100.0/22	Welt-Net Broadband	1,024
144.87.24.0/22	Royal Mail Group Limited	1,024
144.87.28.0/22	Royal Mail Group Limited	1,024
145.79.172.0/22	Internet Utilities Europe and Asia Limited	1,024
147.78.68.0/22	Hop Bilisim Teknolojileri Anonim Sirketi	1,024
147.189.68.0/22	FTIP003165225	1,024
147.189.76.0/22	FTIP003902813	1,024
151.240.180.0/22	Private Customer	1,024
151.240.184.0/22	Private Customer	1,024
151.240.188.0/22	Private Customer	1,024
151.240.192.0/22	Private Customer	1,024
151.240.196.0/22	Private Customer	1,024
151.240.200.0/22	Private Customer	1,024
151.241.52.0/22	Private Customer	1,024
151.241.56.0/22	Private Customer	1,024
151.241.60.0/22	Private Customer	1,024
151.241.180.0/22	Private Customer	1,024
151.241.184.0/22	Private Customer	1,024
151.241.188.0/22	Private Customer	1,024
151.241.192.0/22	Private Customer	1,024
151.241.196.0/22	Private Customer	1,024
151.241.200.0/22	Private Customer	1,024
151.244.80.0/22	Private Customer	1,024
151.244.204.0/22	Private Customer	1,024
151.244.208.0/22	Private Customer	1,024
151.245.80.0/22	Private Customer	1,024
151.245.204.0/22	Private Customer	1,024
151.245.208.0/22	Private Customer	1,024
164.38.16.0/22	Currys Retail Ltd.	1,024
164.38.120.0/22	Currys Retail Ltd.	1,024
164.38.184.0/22	Currys Retail Ltd.	1,024
167.148.60.0/22	Brander Group Inc.	1,024
178.78.108.0/22	BSi #349	1,024
178.92.112.0/22	Private Customer	1,024
178.92.180.0/22	Bulud Telecom LLC	1,024
178.93.104.0/22	Private Customer	1,024
178.93.192.0/22	Mercury Telecom LLC	1,024
178.94.244.0/22	Moy Telecom LLC	1,024
178.95.60.0/22	Bulud Telecom LLC	1,024
185.68.200.0/22	Nibs Solutions Ltd	1,024
185.90.32.0/22	BI Worldwide Ltd	1,024
193.35.220.0/22	Cambridge Consultants Limited	1,024
193.36.80.0/22	EE Limited	1,024
193.38.192.0/22	Co-operative Group Limited	1,024
193.187.140.0/22	Hop Bilisim Teknolojileri Anonim Sirketi	1,024
194.32.20.0/22	Northern Ireland Civil Service	1,024
212.134.124.0/22	Private Customer	1,024
212.134.164.0/22	Private Customer	1,024
212.134.208.0/22	Private Customer	1,024
212.134.224.0/22	Private Customer	1,024
212.212.16.0/22	Code200 UAB	1,024
213.249.188.0/22	Technology Business Centre #614	1,024
217.217.36.0/22	Private Customer	1,024
217.217.56.0/22	Private Customer	1,024
217.217.60.0/22	Private Customer	1,024
31.130.240.0/23	Volta Central London's Data Centre	512
45.149.168.0/23	Private Customer	512
45.149.170.0/23	Private Customer	512
62.192.124.0/23	GTT Communications Inc.	512
82.108.88.0/23	GTT - EMEA Ltd.	512
82.108.102.0/23	GTT - EMEA Ltd.	512
82.108.152.0/23	GTT - EMEA Ltd.	512
82.136.54.0/23	Burstfire Networks Ltd	512
85.88.240.0/23	Xperience Group	512
87.86.24.0/23	Code200 UAB	512
89.39.172.0/23	Lunarnaut, LLC	512
89.145.172.0/23	Leidos Innovations UK LTD	512
91.236.216.0/23	Pro Marketing Central LLC	512
94.26.64.0/23	Lunarnaut, LLC	512
142.205.162.0/23	Toronto Dominion Bank	512
144.177.74.0/23	AKER SOLUTIONS ASA	512
148.253.220.0/23	Department for Environment, Food and Rural Affairs	512
152.114.220.0/23	ZELLIS UK LIMITED	512
152.114.222.0/23	ZELLIS UK LIMITED	512
157.236.254.0/23	Avon & Somerset Constabulary	512
159.253.66.0/23	Technology Business centre #753	512
178.78.106.0/23	Eclipse Internet - Bluewave Internet Limted #683	512
178.212.56.0/23	Volta Central London's Data Centre	512
185.177.64.0/23	Leidos Innovations UK LTD	512
193.35.158.0/23	Local Government Network	512
193.35.160.0/23	Local Government Network	512
193.36.78.0/23	EE Limited	512
193.38.192.0/23	Co-operative Group Limited	512
193.38.194.0/23	Co-operative Group Limited	512
205.239.40.0/23	DXC US Latin America Corporation	512
209.101.8.0/23	Private Customer	512
213.169.196.0/23	GTT Communications Inc.	512
213.169.202.0/23	GTT Communications Inc.	512
213.190.16.0/23	Northern Trust Corporation	512
213.190.18.0/23	Northern Trust Corporation	512
217.31.10.0/23	CSC Computer Sciences Ltd	512
23.26.70.0/24	Ace Data Centers, Inc.	256
23.26.108.0/24	Ace Data Centers, Inc.	256
23.26.117.0/24	Ace Data Centers, Inc.	256
23.26.131.0/24	Ace Data Centers, Inc.	256
23.26.192.0/24	Ace Data Centers, Inc.	256
37.44.229.0/24	Netwise Hosting Ltd	256
37.44.230.0/24	Netwise Hosting Ltd	256
37.44.231.0/24	Netwise Hosting Ltd	256
37.230.61.0/24	Private Customer	256
40.27.28.0/24	Midwest Cable & Telecom LLC	256
40.27.72.0/24	Private Customer	256
45.149.7.0/24	Private Customer	256
46.68.66.0/24	Orange PCS GPRS Services	256
51.64.32.0/24	UK Home Office (The Secretary of State for the Home Department)	256
51.64.34.0/24	UK Home Office (The Secretary of State for the Home Department)	256
51.64.35.0/24	UK Home Office (The Secretary of State for the Home Department)	256
51.230.255.0/24	Department for Work and Pensions	256
62.244.11.0/24	rent_US	256
62.244.12.0/24	Lucky Net Ltd	256
62.244.29.0/24	Lucky Net Ltd	256
62.244.36.0/24	Lucky Net Ltd	256
62.244.37.0/24	for-rent-us	256
62.244.41.0/24	Lucky Net Ltd	256
62.244.43.0/24	Lucky Net Ltd	256
62.244.45.0/24	Lucky Net Ltd	256
62.244.56.0/24	rent_US	256
77.90.135.0/24	K&K Kommunikationssysteme GmbH	256
77.90.138.0/24	K&K Kommunikationssysteme GmbH	256
77.90.145.0/24	K&K Kommunikationssysteme GmbH	256
77.90.151.0/24	K&K Kommunikationssysteme GmbH	256
77.90.153.0/24	K&K Kommunikationssysteme GmbH	256
77.90.164.0/24	K&K Kommunikationssysteme GmbH	256
77.90.184.0/24	K&K Kommunikationssysteme GmbH	256
77.94.224.0/24	EU-NISSAN-BIZ-SUN	256
79.132.64.0/24	SIA BITE Latvija	256
79.132.65.0/24	SIA BITE Latvija	256
80.81.58.0/24	SIA BITE Latvija	256
82.140.134.0/24	Code200	256
82.140.138.0/24	Code200	256
82.140.143.0/24	Code200	256
82.140.170.0/24	Code200	256
82.153.33.0/24	JY MOBILE COMMUNICATIONS	256
82.153.85.0/24	JY Mobile Communications	256
82.153.88.0/24	JY Mobile Communications	256
82.153.179.0/24	JY Mobile Communications	256
82.153.181.0/24	JY MOBILE COMMUNICATIONS	256
82.153.190.0/24	JY MOBILE COMMUNICATIONS	256
82.153.238.0/24	JY MOBILE COMMUNICATIONS	256
83.223.153.0/24	SIA BITE Latvija	256
83.223.154.0/24	SIA BITE Latvija	256
84.46.177.0/24	Code200	256
84.46.181.0/24	Code200	256
84.46.183.0/24	Code200	256
84.46.188.0/24	Code200	256
84.46.190.0/24	Code200	256
84.46.191.0/24	Code200	256
84.46.194.0/24	Code200	256
84.55.17.0/24	Private Customer	256
84.55.22.0/24	Private Customer	256
85.235.123.0/24	DMZ at Bacton Data Centre	256
86.38.56.0/24	Code200	256
86.38.63.0/24	Code200	256
86.38.65.0/24	Code200	256
86.38.67.0/24	Code200	256
86.38.68.0/24	Code200	256
86.38.86.0/24	Code200	256
86.38.93.0/24	Code200	256
86.38.118.0/24	Code200	256
86.38.123.0/24	Code200	256
86.38.148.0/24	Code200	256
86.38.193.0/24	Code200	256
86.38.233.0/24	Code200	256
86.38.244.0/24	Code200	256
86.54.81.0/24	ELEVEN HOLDINGS LIMITED	256
86.110.57.0/24	Private Customer	256
89.117.183.0/24	Code200	256
89.117.198.0/24	Code200	256
89.117.203.0/24	Code200	256
89.117.235.0/24	Code200	256
91.90.125.0/24	M247 LTD	256
91.90.127.0/24	M247 LTD	256
91.102.189.0/24	Moneysupermarket.com Limited	256
91.102.190.0/24	Moneysupermarket.com Limited	256
91.102.191.0/24	Moneysupermarket.com Limited	256
91.142.128.0/24	Elekta Limited	256
91.227.78.0/24	Ashridge (Bonar Law Memorial) Trust	256
91.230.16.0/24	Dairy Crest Ltd	256
91.230.40.0/24	BEST - BANCO ELECTRONICO DE SERVICO TOTAL, S.A.	256
94.125.16.0/24	Tesco Stores Ltd	256
94.125.17.0/24	Tesco Stores Ltd	256
94.125.18.0/24	Tesco Stores Ltd	256
94.125.19.0/24	Tesco Stores Ltd	256
95.173.59.0/24	IPXO	256
109.205.158.0/24	BONTBLOCK	256
132.153.3.0/24	Atomic Weapons Establishment	256
132.153.244.0/24	Atomic Weapons Establishment	256
132.153.245.0/24	Atomic Weapons Establishment	256
132.153.246.0/24	Atomic Weapons Establishment	256
132.153.247.0/24	Atomic Weapons Establishment	256
132.153.248.0/24	Atomic Weapons Establishment	256
132.153.249.0/24	Atomic Weapons Establishment	256
132.153.250.0/24	Atomic Weapons Establishment	256
132.153.251.0/24	Atomic Weapons Establishment	256
132.153.252.0/24	Atomic Weapons Establishment	256
132.153.253.0/24	Atomic Weapons Establishment	256
132.153.254.0/24	Atomic Weapons Establishment	256
138.108.94.0/24	Nielsen Consumer LLC	256
143.223.132.0/24	British Telecommunications PLC	256
148.252.3.0/24	Department for Environment, Food and Rural Affairs	256
148.252.7.0/24	Department for Environment, Food and Rural Affairs	256
149.117.130.0/24	Synopsys Inc.	256
149.254.1.0/24	T-Mobile(UK) Erith WAP Production-Lan	256
152.114.196.0/24	ZELLIS UK LIMITED	256
156.146.3.0/24	Kate Spade Holdings LLC	256
157.236.254.0/24	Avon & Somerset Constabulary	256
157.236.255.0/24	Avon & Somerset Constabulary	256
159.197.13.0/24	4000 Parkway	256
159.197.44.0/24	4000 Parkway	256
159.197.45.0/24	4000 Parkway	256
163.5.37.0/24	Private Customer	256
163.5.67.0/24	Private Customer	256
163.5.98.0/24	Private Customer	256
163.5.115.0/24	Private Customer	256
163.5.122.0/24	Private Customer	256
163.5.208.0/24	Private Customer	256
163.5.217.0/24	Private Customer	256
163.5.222.0/24	Private Customer	256
163.5.249.0/24	Private Customer	256
164.38.2.0/24	Currys Retail Ltd.	256
164.38.12.0/24	Currys Retail Ltd.	256
164.38.31.0/24	Currys Retail Ltd.	256
164.38.32.0/24	Currys Retail Ltd.	256
164.38.33.0/24	Currys Retail Ltd.	256
164.38.34.0/24	Currys Retail Ltd.	256
164.38.134.0/24	Currys Retail Ltd.	256
164.38.148.0/24	Currys Retail Ltd.	256
164.38.149.0/24	Currys Retail Ltd.	256
164.38.156.0/24	Currys Retail Ltd.	256
164.38.196.0/24	Currys Retail Ltd.	256
164.38.197.0/24	Currys Retail Ltd.	256
164.134.1.0/24	NHS National Services Scotland	256
164.134.134.0/24	NHS National Services Scotland	256
164.134.135.0/24	NHS National Services Scotland	256
164.134.136.0/24	NHS National Services Scotland	256
164.134.137.0/24	NHS National Services Scotland	256
164.134.138.0/24	NHS National Services Scotland	256
185.58.165.0/24	NHS National Services Scotland	256
185.128.205.0/24	Sagentia Ltd	256
185.149.6.0/24	Avis Budget Services Ltd.	256
185.230.13.0/24	K&K Kommunikationssysteme GmbH	256
185.230.15.0/24	K&K Kommunikationssysteme GmbH	256
192.8.112.0/24	HCL AMERICA INC	256
192.8.149.0/24	HCL AMERICA INC	256
192.12.73.0/24	Adastral Park Laboratories	256
192.53.46.0/24	DXC US Latin America Corporation	256
192.65.219.0/24	British Telecom	256
192.65.221.0/24	British Telecom	256
192.65.222.0/24	British Telecom	256
192.65.223.0/24	British Telecom	256
192.65.224.0/24	British Telecom	256
192.65.225.0/24	British Telecom	256
192.65.226.0/24	British Telecom	256
192.65.227.0/24	British Telecom	256
192.65.228.0/24	British Telecom	256
192.152.14.0/24	Aircraft Research Association Limited	256
193.23.32.0/24	Bayerische Motoren Werke Aktiengesellschaft	256
193.28.232.0/24	TEVA UK HOLDINGS LIMITED	256
193.32.39.0/24	Sir Robert McAlpine Ltd	256
193.32.46.0/24	Virgin Money plc	256
193.32.48.0/24	Virgin Money plc	256
193.33.199.0/24	VirtualTin Limited	256
193.35.197.0/24	Broadcast and Satellite Services	256
193.36.80.0/24	EE Limited	256
193.36.240.0/24	ALLEN OVERY SHEARMAN STERLING LLP	256
193.36.243.0/24	ALLEN OVERY SHEARMAN STERLING LLP	256
193.36.253.0/24	ALLEN OVERY SHEARMAN STERLING LLP	256
193.37.142.0/24	Computer Service Centre Ltd	256
193.39.141.0/24	AWE PLC	256
193.84.142.0/24	Napp Pharmaceutical Holdings Limited	256
193.111.18.0/24	RapidSeedbox Ltd	256
193.111.19.0/24	RapidSeedbox Ltd	256
193.138.107.0/24	Standard Life Employee Services Ltd.	256
193.195.138.0/24	VODAFONE ENTERPRISE EQUIPMENT LIMITED	256
194.32.29.0/24	Northern Ireland Civil Service	256
194.32.31.0/24	Northern Ireland Civil Service	256
194.32.207.0/24	Historic Environment Scotland	256
194.35.183.0/24	EE Limited	256
194.36.68.0/24	ITV Services Limited	256
194.36.135.0/24	Hitachi Europe Ltd	256
194.59.188.0/24	World Conservation Monitoring Centre	256
194.60.136.0/24	Local Government Network	256
194.60.137.0/24	Local Government Network	256
194.60.138.0/24	Local Government Network	256
194.60.139.0/24	Local Government Network	256
194.70.94.0/24	Dabs Direct PLC	256
194.132.24.0/24	WSP Europe	256
194.132.25.0/24	WSP Europe	256
194.155.58.0/24	Dorset Healthcare NHS Trust (RDY)	256
194.189.44.0/24	Central Notts Healthcare Trust	256

The list on this page is limited to 400 results. The totality of IPv4 ranges for this ASN is available through our ASN & IP Ranges APIs.

Netblock	Company
2a00:2380::/25	British Telecom BTnet Management container
2a01:4c8::/29	EE Limited
2001:4878:c259::/48	Akamai Technologies, Inc.
2a01:4c8:f400::/48	EE Limited
2a01:4c8:f401::/48	EE Limited
2a03:1e82:90ff::/48	Bayerische Motoren Werke Aktiengesellschaft

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IP Ranges API

WHOIS Details

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                                                ASHandle:       AS2856
                                                OrgID:          AS2856
                                                ASName:         AS2856
                                                ASNumber:       AS2856
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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IP WHOIS API & Database

Hosted Domains

There are 31,346 domain names hosted across 11,443 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
81.145.31.210	██████████	878
213.123.60.239	██████████	787
213.1.238.126	██████████	741
194.72.108.26	██████████	669
194.73.113.100	██████████	324
81.145.16.13	██████████	256
213.1.214.233	██████████	184
213.1.238.125	██████████	160
81.145.31.217	██████████	157
62.172.138.79	██████████	152

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Hosted Domains API & Database

Peers

There are 247 peers for this ASN.

Peers	Name
AS11031	Orbis Investments (Canada) Limited
AS11528	Photronics Inc.
AS11939	THE MATHWORKS, INC.
AS12200	Rackspace Hosting
AS12222	Akamai Technologies, Inc.
AS12440	Hughes Network Systems GmbH
AS12576	EE Ltd
AS1267	WIND TRE S.P.A.
AS12713	OTEGlobe
AS13009	Redcentric Solutions Ltd
AS13030	Init7 (Switzerland) Ltd.
AS13037	Zen Internet Ltd
AS131993	QUINNOX-IN
AS13205	British Telecommunications PLC
AS13213	THG HOSTING LIMITED
AS13237	euNetworks GmbH
AS13458	DAVIDSON KEMPNER CAPITAL MANAGEMENT LP
AS137409	GSL Networks Pty LTD
AS14630	Invesco Group Services, Inc.
AS14766	Magnetar Capital LLC
AS14931	The St. Paul Travelers Companies, Inc.
AS15141	Bausch & Lomb
AS15248	Metaswitch Networks Corp.
AS15499	Computacenter Management GmbH trading as Computacenter AG & Co.oHG
AS15557	Societe Francaise Du Radiotelephone - SFR SA
AS15830	Equinix (EMEA) Acquisition Enterprises B.V.
AS15865	Elliott Advisors UK (Ltd)
AS16276	OVH SAS
AS16477	Nielsen Consumer LLC
AS16525	KBR
AS16839	SERVICENOW, INC.
AS17274	Robert W. Baird & Co. Incorporated
AS17639	Converge ICT Solutions Inc.
AS17903	Cognizant Technology Solutions India Pvt Ltd,
AS1828	Unitas Global
AS19239	KLA Corporation
AS19305	Transaction Network Services, Inc.
AS19428	Phillips 66 Company
AS19551	Incapsula Inc
AS197409	Co-operative Group Limited
AS198032	Cambridge Assessment
AS19812	BT Americas, Inc
AS198386	THRIVE OPERATIONS LIMITED
AS199262	Transport for London
AS199524	G-Core Labs S.A.
AS199675	Willis Group Services Ltd
AS200961	FIL INVESTMENT MANAGEMENT LIMITED
AS201126	CDW Ltd
AS201536	Sandyx Systems Limited
AS20163	Sunrise Medical, Inc.
AS202206	FAT MEDIA LTD
AS202275	Gaming Technology Solutions Ltd.
AS202466	QBE Management Services (UK) Limited
AS20253	Qwilt Inc.
AS202907	Atomic IT Limited
AS203171	Chi Technology Ltd
AS204550	Continental Limited
AS20464	HP Inc.
AS20473	The Constant Company, LLC
AS204819	WPM Software Ltd
AS205114	The WEST Retail group LImited
AS205693	Driver & Vehicle Licensing Agency
AS206051	ARAMARK N.V
AS206146	PAYSEND TECHNOLOGY LIMITED
AS206166	Schroder Investment Management Limited
AS206237	Barclays Bank PLC
AS206467	Protech Communications Ltd
AS206686	Nominet UK
AS20695	Capital One (Europe) Plc
AS20705	HSBC Bank plc
AS207087	Pay360 Ltd
AS207273	Pharoah Tools Limited
AS207552	Cambridge Consultants Limited
AS20799	Datanet.co.uk Ltd
AS20860	IOMART CLOUD SERVICES LIMITED
AS209258	TSYS Europe (Netherlands) B.V.
AS209761	North of England Commissioning Support Unit
AS209997	SECURITAS TECHNOLOGY LIMITED
AS21054	Natwest Markets PLC
AS210988	London Borough Of Hammersmith & Fulham
AS211015	UK Home Office (The Secretary of State for the Home Department)
AS211077	UK Home Office (The Secretary of State for the Home Department)
AS21110	Entain Corporate Services Limited
AS211303	Electronic Arts Limited
AS211389	Briant Broadband Limited
AS2119	Telenor Norge AS
AS21218	EBC Group (UK) Ltd
AS212329	Netcraft Ltd
AS212565	Specsavers Optical Group Limited
AS212655	YouFibre Limited
AS21296	Pricewaterhousecoopers Services Limited
AS21301	Natwest Markets PLC
AS2134	Santander Global Technology and Operations, S.L.
AS21369	Atos IT Services UK Ltd
AS213867	TENERITY LIMITED
AS213885	Wilxite Ltd
AS21464	EDF Trading Ltd
AS21470	South West Communications Group Ltd
AS215724	Edgevana, Inc.
AS21758	Modine Manufacturing Company

Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

ASN API & Database

Upstreams

There are 3 upstreams for this ASN.

upstreams	Name
AS5400	British Telecommunications PLC
AS56595	Fluency Communications Ltd
AS6461	Zayo Bandwidth

Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

ASN API & Database

Downstreams

There are 144 downstreams for this ASN.

Downstreams	Name
AS11031	Orbis Investments (Canada) Limited
AS11528	Photronics Inc.
AS11939	THE MATHWORKS, INC.
AS12222	Akamai Technologies, Inc.
AS12440	Hughes Network Systems GmbH
AS131993	QUINNOX-IN
AS13205	British Telecommunications PLC
AS13458	DAVIDSON KEMPNER CAPITAL MANAGEMENT LP
AS14630	Invesco Group Services, Inc.
AS14766	Magnetar Capital LLC
AS14931	The St. Paul Travelers Companies, Inc.
AS15141	Bausch & Lomb
AS15248	Metaswitch Networks Corp.
AS15499	Computacenter Management GmbH trading as Computacenter AG & Co.oHG
AS15865	Elliott Advisors UK (Ltd)
AS16477	Nielsen Consumer LLC
AS16525	KBR
AS17274	Robert W. Baird & Co. Incorporated
AS17903	Cognizant Technology Solutions India Pvt Ltd,
AS19239	KLA Corporation
AS19305	Transaction Network Services, Inc.
AS19428	Phillips 66 Company
AS197409	Co-operative Group Limited
AS19812	BT Americas, Inc
AS198386	THRIVE OPERATIONS LIMITED
AS199262	Transport for London
AS199675	Willis Group Services Ltd
AS200961	FIL INVESTMENT MANAGEMENT LIMITED
AS201536	Sandyx Systems Limited
AS20163	Sunrise Medical, Inc.
AS202206	FAT MEDIA LTD
AS202907	Atomic IT Limited
AS203171	Chi Technology Ltd
AS204550	Continental Limited
AS20464	HP Inc.
AS204819	WPM Software Ltd
AS205114	The WEST Retail group LImited
AS205693	Driver & Vehicle Licensing Agency
AS206051	ARAMARK N.V
AS206146	PAYSEND TECHNOLOGY LIMITED
AS206166	Schroder Investment Management Limited
AS206237	Barclays Bank PLC
AS206467	Protech Communications Ltd
AS206686	Nominet UK
AS20695	Capital One (Europe) Plc
AS20705	HSBC Bank plc
AS207087	Pay360 Ltd
AS207273	Pharoah Tools Limited
AS207552	Cambridge Consultants Limited
AS209258	TSYS Europe (Netherlands) B.V.
AS209761	North of England Commissioning Support Unit
AS209997	SECURITAS TECHNOLOGY LIMITED
AS21054	Natwest Markets PLC
AS210988	London Borough Of Hammersmith & Fulham
AS211015	UK Home Office (The Secretary of State for the Home Department)
AS211077	UK Home Office (The Secretary of State for the Home Department)
AS21110	Entain Corporate Services Limited
AS211303	Electronic Arts Limited
AS211389	Briant Broadband Limited
AS21218	EBC Group (UK) Ltd
AS212329	Netcraft Ltd
AS212565	Specsavers Optical Group Limited
AS21296	Pricewaterhousecoopers Services Limited
AS21301	Natwest Markets PLC
AS2134	Santander Global Technology and Operations, S.L.
AS21369	Atos IT Services UK Ltd
AS213867	TENERITY LIMITED
AS213885	Wilxite Ltd
AS21464	EDF Trading Ltd
AS21470	South West Communications Group Ltd
AS21758	Modine Manufacturing Company
AS22775	Moore Capital Management
AS24775	Qinetiq Limited
AS25049	Shell Information Technology International B.V.
AS25050	VOCALINK LTD
AS25343	Coventry University Computing Services
AS2535	BP America, Inc.
AS25421	John Lewis Plc.
AS2559	VISA INTERNATIONAL SERVICE ASSOCIATION
AS27447	Schulte Roth & Zabel LLP
AS28863	Thales UK Limited
AS29033	Eckoh UK Limited
AS29888	Unum Group
AS31003	Iron Mountain Europe (Group) Limited
AS33001	Cravath, Swaine & Moore LLP
AS33127	Integrated Systems Corp
AS33442	Zebra Technologies Corporation
AS33680	TELEPERFORMANCE USA
AS33981	Total System Services Processing Europe Limited
AS35350	UCB Pharma S.A.
AS35707	Scottish Power UK PLC
AS3573	Accenture LLP
AS36224	HCL AMERICA INC
AS3738	State Street Bank and Trust Company
AS38191	Infosys Technologies Ltd
AS38936	Herman Miller LTD
AS393414	Kirkland & Ellis LLP
AS394265	Box.com
AS39461	EDF ENERGY NUCLEAR GENERATION LIMITED
AS394731	Canadian Natural Resources Limited

Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

ASN API & Database

Pingable IPs

120,933 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
86.140.82.234	AS2856 British Telecommunications PLC	`1.41ms` from Erith, GB
2a00:23cc:e66c:e400::1	AS2856 British Telecommunications PLC	`2.70ms` from Erith, GB
86.174.9.62	AS2856 British Telecommunications PLC	`5.66ms` from Erith, GB
2a00:23c7:9b15:6e00::1	AS2856 British Telecommunications PLC	`9.10ms` from Erith, GB
2a00:2381:1108::1	AS2856 British Telecommunications PLC	`5.34ms` from Erith, GB
2a00:23c8:b72d:7e00::1	AS2856 British Telecommunications PLC	`2.82ms` from Erith, GB
31.54.240.161	AS2856 British Telecommunications PLC	`3.34ms` from Erith, GB
2a00:2381:2628::1	AS2856 British Telecommunications PLC	`10.13ms` from Erith, GB
81.141.21.191	AS2856 British Telecommunications PLC	`3.56ms` from Erith, GB
86.146.179.222	AS2856 British Telecommunications PLC	`4.35ms` from Erith, GB
2a00:23c8:a4ee:4100::1	AS2856 British Telecommunications PLC	`6.51ms` from Erith, GB
86.169.155.236	AS2856 British Telecommunications PLC	`1.90ms` from Erith, GB
86.136.207.67	AS2856 British Telecommunications PLC	`5.28ms` from Erith, GB
2a00:23c7:1785:7c00::1	AS2856 British Telecommunications PLC	`10.09ms` from Erith, GB
2a00:23c8:6c04:7c00::1	AS2856 British Telecommunications PLC	`4.50ms` from Erith, GB
2a00:23c8:f91e:3c00::1	AS2856 British Telecommunications PLC	`7.97ms` from Erith, GB
31.96.187.220	AS2856 British Telecommunications PLC	`2.96ms` from Erith, GB
86.164.153.136	AS2856 British Telecommunications PLC	`3.10ms` from Erith, GB
2a00:2381:e5d3::1	AS2856 British Telecommunications PLC	`7.61ms` from Erith, GB
86.161.58.170	AS2856 British Telecommunications PLC	`2.92ms` from Erith, GB
2a00:2381:1d68::1	AS2856 British Telecommunications PLC	`6.01ms` from Erith, GB
2a00:23c8:9ebe:5900::1	AS2856 British Telecommunications PLC	`13.75ms` from Erith, GB
86.182.9.119	AS2856 British Telecommunications PLC	`2.67ms` from Erith, GB
2a00:23c5:bdab:e900::1	AS2856 British Telecommunications PLC	`9.94ms` from Erith, GB
217.43.186.236	AS2856 British Telecommunications PLC	`5.67ms` from Erith, GB

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
195.241.201.104	AS1136 KPN B.V.	`1.26ms` from Amsterdam, NL
95.59.237.40	AS9198 JSC Kazakhtelecom	`6.15ms` from Astana, KZ
54.39.28.120	AS16276 OVH SAS	`0.10ms` from Beauharnois, CA
91.82.47.216	AS12301 Invitech ICT Services Kft.	`7.05ms` from Budapest, HU
223.146.60.72	AS4134 CHINANET-BACKBONE	`3.47ms` from Chenzhou, CN
34.8.12.152	AS396982 Google LLC	`0.07ms` from Melbourne, AU
217.181.175.168	AS8399 SEWAN SAS	`0.56ms` from Paris, FR
52.70.156.168	AS14618 Amazon.com, Inc.	`0.25ms` from Reston, US
51.20.16.24	AS16509 Amazon.com, Inc.	`0.11ms` from Stockholm, SE
214.54.194.24	AS121 United States Department of Defense (DoD)	`0.26ms` from Ashburn, US
108.217.47.184	AS7018 AT&T Enterprises, LLC	`7.60ms` from Atlanta, US
50.121.242.248	AS13518 GoNetSpeed	`11.93ms` from Berkeley Springs, US
41.36.30.24	AS8452 TE-AS	`5.26ms` from Cairo, EG
41.232.166.152	AS8452 TE-AS	`3.24ms` from Cairo, EG
108.61.100.232	AS20473 The Constant Company, LLC	`0.10ms` from Chicago, US
40.119.177.120	AS8075 Microsoft Corporation	`0.75ms` from Dubai, AE
171.238.239.168	AS7552 Viettel Group	`2.19ms` from Hanoi, VN
154.120.106.136	AS37340 SPECTRANET LIMITED	`13.50ms` from Lagos, NG
62.172.12.200	AS2856 British Telecommunications PLC	`0.94ms` from London, GB
137.222.215.232	AS786 Jisc Services Limited	`6.24ms` from London, GB
46.164.207.24	AS6856 AO IK Informsvyaz-Chernozemye	`8.70ms` from Moscow, RU
114.216.212.184	AS140292 CHINATELECOM Jiangsu province Suzhou 5G network	`6.39ms` from Nanjing, CN
50.19.222.40	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
171.67.70.88	AS32 Stanford University	`1.05ms` from San Jose, US
218.156.141.56	AS4766 Korea Telecom	`1.37ms` from Seoul, KR

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

traceroute -a -n -q1 -f3 -m11 81.143.124.195

traceroute to 81.143.124.195 (81.143.124.195): 11 hops max, 52 byte packets

3 [AS37282] 102.130.224.97 60.788 ms

4 *

5 *

6 *

7 *

8 [AS2856] 194.74.16.234 187.6 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in Abidjan, CI

On April 13th 2026

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What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS2856 at robtex.

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