Autonomous System details

AS43872

Optinet U.K. Limited · optinet.co.uk

United Kingdom

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AS43872 – Optinet U.K. Limited

Field	Value
Country	United Kingdom
Website	optinet.co.uk
Hosted domains	15
IPv4 addresses	6,400
IPv6 addresses	4,436,777,100,798,802,900,000,000,000,000
ASN type	ISP
Registry	ripe
Allocated	9 years ago on Dec 20, 2016
Updated	5 months ago on Nov 28, 2025

Netblock	Company	Num of IPs
5.253.252.0/22	Optinet U.K. Limited	1,024
185.183.20.0/22	Optinet U.K. Limited	1,024
185.253.176.0/22	Optinet U.K. Limited	1,024
45.136.108.0/24	Optinet U.K. Limited	256
84.38.246.0/24	Harrods International Ltd	256
91.201.105.0/24	Guaranty Trust Bank (UK) Limited	256
92.118.111.0/24	Optinet U.K. Limited	256
176.101.169.0/24	Optinet U.K. Limited	256
185.187.61.0/24	Optinet U.K. Limited	256
193.105.189.0/24	Optinet U.K. Limited	256
193.247.94.0/24	Optinet U.K. Limited	256
193.247.101.0/24	Optinet U.K. Limited	256
193.247.103.0/24	Optinet U.K. Limited	256
193.247.165.0/24	Optinet U.K. Limited	256
195.234.28.0/24	Optinet U.K. Limited	256
217.198.183.0/24	Optinet U.K. Limited	256

Netblock	Company
2a0b:180::/29	Optinet U.K. Limited
2a0d:1e80::/29	Optinet U.K. Limited
2a10:c740::/29	Optinet U.K. Limited
2a10:c7c0::/29	Optinet U.K. Limited
2a10:c8c0::/29	Optinet U.K. Limited
2a10:c9c0::/29	Optinet U.K. Limited
2a10:cac0::/29	Optinet U.K. Limited

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WHOIS Details

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                                                ASHandle:       AS43872
                                                OrgID:          AS43872
                                                ASName:         AS43872
                                                ASNumber:       AS43872
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 15 domain names hosted across 11 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
185.253.177.226	██████████	5
193.105.189.235	██████████	1
185.183.20.100	██████████	1
193.105.189.234	██████████	1
185.187.61.232	██████████	1
193.105.189.98	██████████	1
185.187.61.169	██████████	1
92.118.111.12	██████████	1
5.253.255.58	██████████	1
92.118.111.139	██████████	1

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Hosted Domains API & Database

Peers

There are 86 peers for this ASN.

Peers	Name
AS1031	PEER 1031 LLC
AS1239	Cogent Communications, LLC
AS12552	GlobalConnect AB
AS1267	WIND TRE S.P.A.
AS12779	IT.Gate S.p.A.
AS12969	Vodafone Iceland
AS1299	Arelion Sweden AB
AS132337	Axclusive
AS13237	euNetworks GmbH
AS137409	GSL Networks Pty LTD
AS14537	Continent 8 LLC
AS14630	Invesco Group Services, Inc.
AS14840	BR.Digital Telecom
AS15802	Emirates Integrated Telecommunications Company PJSC
AS16552	Tiggee LLC
AS174	Cogent Communications, LLC
AS18106	Viewqwest Pte Ltd
AS1828	Unitas Global
AS198150	SIACOM JSC
AS20562	Broadband Hosting B.V.
AS20764	CJSC RASCOM
AS207841	Inferno Communications Ltd
AS212483	LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS215638	Cilix Limited
AS24482	SG.GS
AS24940	Hetzner Online GmbH
AS25091	IP-Max SA
AS25160	Vorboss Limited
AS271253	LINK BRASIL TELECOMUNICACOES LTDA
AS286	GTT Communications Inc.
AS28792	Public Internet Ltd
AS30781	Free Pro SAS
AS30844	Liquid Telecommunications Ltd
AS31500	Global Network Management Inc
AS3170	VeloxServ Communications Ltd
AS31742	Sotaconnect Network
AS3214	xTom GmbH
AS3257	GTT Communications Inc.
AS32590	Valve Corporation
AS33891	Core-Backbone GmbH
AS34177	CELESTE SAS
AS34288	Kantonsschule Zug
AS34549	meerfarbig GmbH & Co. KG
AS34927	iFog GmbH
AS35266	EX Networks Limited
AS36236	NetActuate, Inc
AS37100	SEACOM Limited
AS3741	Dimension Data
AS37468	Angola Cables
AS37497	Network Platforms (PTY) LTD
AS37680	Cool Ideas Service Provider (Pty) Ltd
AS37721	Virtual Technologies & Solutions
AS38880	Micron21 Datacentre Pty Ltd
AS39120	Convergenze S.p.A.
AS39122	Blacknight Internet Solutions Limited
AS39351	31173 Services AB
AS398465	Rackdog, LLC
AS41327	Fiber Telecom S.p.A.
AS41811	CONVERGENCE (GROUP NETWORKS) LIMITED
AS4455	IX Reach Ltd
AS47957	Worldline IGSA SA
AS48070	DSM (GB) Limited
AS48362	Stadtwerke Feldkirch
AS49544	i3D.net B.V
AS51185	MainStreaming SpA
AS52075	Wifirst S.A.S.
AS52320	GlobeNet Cabos Submarinos Colombia, S.A.S.
AS53062	ALT \| GRUPO BRASIL TECPAR
AS5713	Telkom SA Ltd.
AS58511	Anycast Global Backbone
AS60171	AFR-IX TELECOM S.A.
AS61049	Exascale Ltd
AS62167	Tismi BV
AS63927	RISE
AS6424	EDGOO NETWORKS
AS6461	Zayo Bandwidth
AS6908	Datahop - Six Degrees
AS6939	Hurricane Electric LLC
AS8220	COLT Technology Services Group Limited
AS8359	MTS PJSC
AS8455	atom86 BV
AS8708	DIGI ROMANIA S.A.
AS8966	EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC
AS9044	BSE Software GmbH
AS9304	HGC Global Communications Limited
AS999	CORIX NETWORKS

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ASN API & Database

Upstreams

There are 5 upstreams for this ASN.

upstreams	Name
AS1299	Arelion Sweden AB
AS174	Cogent Communications, LLC
AS3257	GTT Communications Inc.
AS6461	Zayo Bandwidth
AS6939	Hurricane Electric LLC

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ASN API & Database

Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address	ASN	Details
195.234.28.222	AS43872 Optinet U.K. Limited	`0.58ms` from London, GB
5.253.252.245	AS43872 Optinet U.K. Limited	`0.46ms` from London, GB
176.101.169.165	AS43872 Optinet U.K. Limited	`0.51ms` from London, GB
185.253.179.29	AS43872 Optinet U.K. Limited	`0.64ms` from London, GB
185.183.22.59	AS43872 Optinet U.K. Limited	`0.51ms` from London, GB
185.187.61.230	AS43872 Optinet U.K. Limited	`0.49ms` from London, GB
185.253.176.69	AS43872 Optinet U.K. Limited	`0.56ms` from London, GB
5.253.255.184	AS43872 Optinet U.K. Limited	`0.63ms` from London, GB
185.183.20.202	AS43872 Optinet U.K. Limited	`0.47ms` from London, GB
91.201.105.1	AS43872 Optinet U.K. Limited	`0.89ms` from London, GB
193.247.94.9	AS43872 Optinet U.K. Limited	`0.40ms` from London, GB
2a0b:180::40	AS43872 Optinet U.K. Limited	`0.44ms` from London, GB
45.136.108.1	AS43872 Optinet U.K. Limited	`0.54ms` from London, GB
92.118.111.115	AS43872 Optinet U.K. Limited	`0.36ms` from London, GB
5.253.254.6	AS43872 Optinet U.K. Limited	`0.70ms` from London, GB
193.247.165.10	AS43872 Optinet U.K. Limited	`0.77ms` from London, GB
5.253.253.247	AS43872 Optinet U.K. Limited	`0.59ms` from London, GB
185.183.21.92	AS43872 Optinet U.K. Limited	`0.52ms` from London, GB
185.253.178.1	AS43872 Optinet U.K. Limited	`0.55ms` from London, GB
217.198.183.135	AS43872 Optinet U.K. Limited	`0.95ms` from London, GB
2a0b:180:dc00:eb01::216	AS43872 Optinet U.K. Limited	`1.03ms` from London, GB
2a0b:180:dc02:eb01::54	AS43872 Optinet U.K. Limited	`0.95ms` from London, GB
193.247.101.102	AS43872 Optinet U.K. Limited	`0.45ms` from London, GB
193.105.189.205	AS43872 Optinet U.K. Limited	`0.54ms` from London, GB
185.253.177.4	AS43872 Optinet U.K. Limited	`0.57ms` 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
201.94.207.80	AS22689 SERCOMTEL S/A TELECOMUNICACOES	`8.77ms` from Curitiba, BR
23.196.89.64	AS16625 Akamai Technologies, Inc.	`0.65ms` from Lima, PE
168.121.45.208	AS27843 ON EMPRESAS S.A.C.	`0.33ms` from Lima, PE
34.98.179.176	AS396982 Google LLC	`0.34ms` from London, GB
201.185.75.96	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`18.11ms` from Medellin, CO
103.111.180.48	AS137922 IBOSS Inc.	`0.20ms` from Mumbai, IN
114.228.152.128	AS4134 CHINANET-BACKBONE	`4.73ms` from Nanjing, CN
180.197.212.128	AS18126 Chubu Telecommunications Company, Inc.	`5.08ms` from Osaka, JP
217.128.75.192	AS3215 Orange S.A.	`1.30ms` from Paris, FR
144.138.120.80	AS135887 Belong (Telstra Limited)	`2.76ms` from Perth, AU
207.161.190.224	AS7122 Bell Canada	`0.91ms` from Winnipeg, CA
117.34.122.144	AS134768 CHINANET SHAANXI province Cloud Base network	`3.33ms` from Xi'an, CN
144.21.33.64	AS31898 Oracle Corporation	`0.14ms` from Amsterdam, NL
73.154.135.0	AS7922 Comcast Cable Communications, LLC	`9.43ms` from Ashburn, US
213.16.149.144	AS1241 Forthnet	`6.47ms` from Athens, GR
24.60.72.96	AS7922 Comcast Cable Communications, LLC	`6.50ms` from Boston, US
70.65.73.224	AS6327 Shaw Communications	`9.32ms` from Calgary, CA
97.224.93.48	AS6167 Verizon Business	`12.43ms` from Chicago, US
179.49.199.0	AS271261 CAIO DE OLIVEIRA LIMA - ME	`11.59ms` from Fortaleza, BR
144.31.246.176	AS213877 U1 DIGITAL SERVICES LTD	`0.15ms` from Frankfurt am Main, DE
113.170.145.224	AS45899 VNPT Corp	`4.01ms` from Ho Chi Minh City, VN
182.180.15.240	AS17557 Pakistan Telecommunication Company Limited	`1.44ms` from Islamabad, PK
81.157.39.240	AS2856 British Telecommunications PLC	`3.31ms` from London, GB
81.155.122.64	AS2856 British Telecommunications PLC	`5.16ms` from London, GB
47.203.159.208	AS5650 Frontier Communications of America, Inc.	`5.45ms` from Miami, US

Traceroute

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

traceroute -a -n -q1 -f4 185.187.61.254

traceroute to 185.187.61.254 (185.187.61.254): 64 hops max, 52 byte packets

4 [] 195.66.237.113 1.339 ms

5 [AS43872] 185.187.61.242 0.984 ms

6 [AS43872] 185.187.61.254 0.623 ms

Measurement taken from

IPinfo ProbeNet in London, GB

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 AS43872 at robtex.

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