31.121.0.0/16

AS2856  ·  British Telecommunications PLC

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Summary

Country United Kingdom
Domain bt.com
ASN AS2856
Registry RIPE
ID BTNET-1

WHOIS Details

inetnum:        31.121.0.0 - 31.121.255.255
netname:        BTnet-1
descr:          BTnet Assignments
country:        GB
admin-c:        BS1474-RIPE
tech-c:         BS1474-RIPE
status:         LIR-PARTITIONED PA
mnt-lower:      BTNET-MNT
mnt-routes:     BTNET-MNT
mnt-by:         AS12576-MNT
created:        2019-05-28T10:18:07Z
last-modified:  2019-05-28T10:19:53Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        EA8069-RIPE
abuse-org:      ORG-TIUL1-RIPE

role:           BTnet Support
address:        Adhara
address:        Adastral Park
address:        Martlesham Heath
address:        Ipswich
address:        SUFFLK IP5 3RE
address:        GB
phone:          +44 800 0858963 5
phone:          +44 1473 336231
e-mail:         [email protected]
e-mail:         [email protected]
admin-c:        FLS15-RIPE
tech-c:         FLS15-RIPE
nic-hdl:        BS1474-RIPE
remarks:        For all queries contact [email protected]
remarks:        Please send delisting issues to [email protected]
mnt-by:         BTNET-MNT
created:        2002-04-30T07:54:10Z
last-modified:  2025-07-18T13:07:21Z
source:         RIPE

route:          31.121.0.0/16
origin:         AS2856
mnt-by:         BTNET-INFRA-MNT
mnt-by:         AS12576-MNT
created:        2018-10-02T09:02:10Z
last-modified:  2019-05-22T12:43:09Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 31.0.0.0/8

Range ASN Company Num of IPs
31.224.0.0/11 AS3320 Telekom Deutschland GmbH 2,097,152
31.64.0.0/12 AS2856 EE Limited 1,048,576
31.48.0.0/13 AS2856 British Telecommunications PLC 524,288
31.32.0.0/13 AS5410 Bouygues Telecom SA 524,288
31.16.0.0/14 AS3209 Vodafone Deutschland GmbH 262,144
31.136.0.0/14 AS33915 Vodafone Libertel B.V. 262,144
31.60.0.0/14 AS5617 Orange Polska Spolka Akcyjna 262,144
31.156.0.0/14 AS30722 Vodafone Italia S.p.A. 262,144
31.126.0.0/15 AS2856 BT Retail 131,072
31.90.0.0/15 AS2856 EE Limited 131,072
31.166.0.0/15 AS34400 Etihad Etisalat, a joint stock company 131,072
31.92.0.0/15 AS2856 EE Limited 131,072
31.212.0.0/15 AS3320 Telekom Deutschland GmbH 131,072
31.164.0.0/15 AS6730 Sunrise GmbH 131,072
31.218.0.0/15 AS5384 EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC 131,072
31.174.0.0/15 AS39603 PLAY MBB 131,072
31.162.0.0/15 AS12389 PJSC Rostelecom 131,072
31.160.0.0/15 AS1136 KPN B.V. 131,072
31.180.0.0/15 AS12389 PJSC Rostelecom 131,072
31.206.0.0/16 AS15924 Vodafone Net Iletisim Hizmetler AS 65,536
31.5.0.0/16 AS12302 Vodafone Romania S.A. 65,536
31.8.0.0/16 AS28812 PJSC Bashinformsvyaz 65,536
31.205.0.0/16 AS41230 ASK4 Limited 65,536
31.0.0.0/16 AS8374 Polkomtel Sp. z o.o. 65,536
31.4.0.0/16 AS12430 VODAFONE ESPANA S.A.U. 65,536
31.191.0.0/16 AS1267 Network tech merge from As24608 into As1267 65,536
31.202.0.0/16 AS34700 MAXNET TELECOM, LTD 65,536
31.153.0.0/16 AS6866 Cyprus Telecommunications Authority 65,536
31.151.0.0/16 AS33915 Ziggo Services B.V. 65,536
31.144.0.0/16 AS21497 PrJSC VF UKRAINE 65,536
31.145.0.0/16 AS8386 Vodafone Net Iletisim Hizmetler AS 65,536
31.206.0.0/16 AS8386 Vodafone Net Iletisim Hizmetler AS 65,536
31.149.0.0/16 AS1136 KPN B.V. 65,536
31.125.0.0/16 AS6871 Plusnet Broadband 65,536
31.23.0.0/16 AS12389 PJSC Rostelecom 65,536
31.46.0.0/16 AS5483 Magyar Telekom Plc. 65,536
31.190.0.0/16 AS1267 Network and company tech merge from AS24608 into As1267 65,536
31.154.0.0/16 AS12400 Partner Communications Ltd. 65,536
31.215.0.0/16 AS5384 EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC 65,536
31.148.0.0/16 AS44546 65,536
31.120.0.0/16 AS2856 EE Limited 65,536
31.188.0.0/16 AS24608 WIND TRE S.P.A. 65,536
31.165.0.0/16 AS6730 sunrise Communications AG 65,536
31.21.0.0/16 AS50266 Pool for fixed WBA users 65,536
31.201.0.0/16 AS50266 Pool for fixed WBA, ODF and VULA users 65,536
31.30.0.0/16 AS16019 Vodafone Czech Republic a.s. 65,536
31.20.0.0/16 AS50266 Pool for fixed WBA users 65,536
31.173.0.0/16 AS31133 PJSC MegaFon 65,536
31.189.0.0/16 AS24608 WIND TRE S.P.A. 65,536

Hosted domains

There are 145 domain names hosted across 73 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
31.121.125.85 wildernleisure.com 22
31.121.9.150 rathsherrywindfarm.com 14
31.121.9.211 coolberrinwindfarm.ie 11
31.121.149.24 glokal.biz 5
31.121.112.23 thehivizman.com 5
31.121.141.165 financegems.com 4
31.121.52.182 select-a-cruise.com 4
31.121.111.115 ehbs.co.uk 3
31.121.244.219 eurospares.com 3
31.121.160.102 airemap-api.com 3
31.121.27.253 hughes.uk 3
31.121.171.189 chersoft.com 3
31.121.66.162 ingeniousdarlington.co.uk 3
31.121.128.70 sureslip.co.uk 2
31.121.52.179 select-traveller.com 2
31.121.181.34 kembles.com 2
31.121.54.155 crazyboaters.co.uk 2
31.121.151.163 desigocc.co.uk 2
31.121.66.151 openbynepo.org 2
31.121.155.214 digi-bee.uk 2

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity

Pingable IPs

7,652 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
31.121.160.49 AS2856 British Telecommunications PLC 1.08ms from Erith, GB
31.121.133.21 AS2856 British Telecommunications PLC 0.98ms from London, GB
31.121.134.10 AS2856 British Telecommunications PLC 1.65ms from London, GB
31.121.138.41 AS2856 British Telecommunications PLC 0.94ms from London, GB
31.121.181.170 AS2856 British Telecommunications PLC 1.36ms from London, GB
31.121.7.202 AS2856 British Telecommunications PLC 1.29ms from London, GB
31.121.157.246 AS2856 British Telecommunications PLC 1.25ms from London, GB
31.121.128.41 AS2856 British Telecommunications PLC 0.89ms from London, GB
31.121.127.180 AS2856 British Telecommunications PLC 1.04ms from London, GB
31.121.205.209 AS2856 British Telecommunications PLC 6.01ms from London, GB
31.121.47.114 AS2856 British Telecommunications PLC 1.59ms from London, GB
31.121.251.82 AS2856 British Telecommunications PLC 0.91ms from London, GB
31.121.97.254 AS2856 British Telecommunications PLC 1.63ms from London, GB
31.121.203.89 AS2856 British Telecommunications PLC 0.92ms from London, GB
31.121.63.212 AS2856 British Telecommunications PLC 1.72ms from London, GB
31.121.241.100 AS2856 British Telecommunications PLC 0.80ms from London, GB
31.121.163.5 AS2856 British Telecommunications PLC 1.59ms from London, GB
31.121.20.146 AS2856 British Telecommunications PLC 2.02ms from London, GB
31.121.227.2 AS2856 British Telecommunications PLC 0.90ms from London, GB
31.121.76.225 AS2856 British Telecommunications PLC 0.96ms from London, GB
31.121.154.121 AS2856 British Telecommunications PLC 2.61ms from London, GB
31.121.72.121 AS2856 British Telecommunications PLC 0.94ms from London, GB
31.121.191.130 AS2856 British Telecommunications PLC 2.34ms from London, GB
31.121.198.250 AS2856 British Telecommunications PLC 1.62ms from London, GB
31.121.144.234 AS2856 British Telecommunications PLC 3.01ms from London, 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
67.172.30.224 AS7922 Comcast Cable Communications, LLC 9.24ms from Ashburn, US
67.141.37.48 AS7029 Windstream Communications LLC 2.91ms from Dallas, US
91.4.213.240 AS3320 Deutsche Telekom AG 5.26ms from Duesseldorf, DE
212.50.144.112 AS16086 DNA Oyj 0.53ms from Helsinki, FI
39.62.152.0 AS17557 Pakistan Telecommunication Company Limited 1.51ms from Islamabad, PK
80.68.155.160 AS30937 Walhalla Data Center Services SL 6.29ms from Madrid, ES
49.193.45.16 AS4804 Microplex PTY LTD 3.67ms from Melbourne, AU
112.4.247.0 AS56046 China Mobile communications corporation 2.93ms from Nanjing, CN
27.119.117.0 AS23563 SK Broadband Co Ltd 2.43ms from Seoul, KR
31.11.152.64 AS29314 VECTRA S.A. 15.09ms from Warsaw, PL
181.40.101.176 AS23201 Telecel S.A. 9.04ms from Asuncion, PY
38.121.37.32 AS174 Cogent Communications, LLC 0.45ms from Boston, US
68.42.118.160 AS7922 Comcast Cable Communications, LLC 9.46ms from Detroit, US
99.162.87.80 AS7018 AT&T Enterprises, LLC 3.24ms from Los Angeles, US
75.220.95.128 AS6167 Verizon Business 11.01ms from Miami, US
181.77.200.0 AS26615 TIM S/A 6.69ms from Osasco, BR
23.208.62.240 AS16625 Akamai Technologies, Inc. 0.17ms from Philadelphia, US
177.142.0.224 AS28573 Claro NXT Telecomunicacoes Ltda 6.81ms from Rio de Janeiro, BR
131.243.168.16 AS16 Lawrence Berkeley National Laboratory 2.42ms from San Jose, US
118.189.139.192 AS17547 M1 NET LTD 1.16ms from Singapore, SG
210.234.167.32 AS2516 KDDI CORPORATION 14.43ms from Tokyo, JP
46.207.61.64 AS8447 A1 Telekom Austria AG 12.85ms from Vienna, AT
115.97.143.128 AS17488 Hathway IP Over Cable Internet 1.23ms from Delhi, IN
86.209.179.144 AS3215 Orange S.A. 12.36ms from Frankfurt am Main, DE
37.85.101.160 AS3320 Deutsche Telekom AG 17.10ms from Frankfurt am Main, DE

Traceroute

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

$
traceroute -a -n -q1 -f3 31.121.38.17
traceroute to 31.121.38.17 (31.121.38.17): 64 hops max, 52 byte packets
3 [AS174] 154.54.73.242 16.918 ms
6 [AS2856] 31.121.38.17 11.791 ms
Measurement taken from IPinfo ProbeNet in Derby, GB
On

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