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	18
IPv4 addresses	6,400
IPv6 addresses	4,436,777,100,798,802,905,238,461,218,816
ASN type	ISP
Registry	ripe
Allocated	9 years ago on Dec 20, 2016
Updated	a month 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 18 domain names hosted across 12 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
185.253.177.226	██████████	5
185.183.22.225	██████████	3
92.118.111.12	██████████	1
185.187.61.169	██████████	1
92.118.111.139	██████████	1
193.105.189.235	██████████	1
185.183.20.100	██████████	1
185.187.61.232	██████████	1
5.253.255.58	██████████	1
193.105.189.98	██████████	1

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Hosted Domains API & Database

Peers

There are 80 peers for this ASN.

Peers	Name
AS1031	PEER 1031 LLC
AS12552	GlobalConnect AB
AS1267	WIND TRE 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
AS24482	SG.GS
AS25091	IP-Max SA
AS25160	Vorboss Limited
AS286	GTT Communications Inc.
AS28792	Public Internet Ltd
AS29169	GANDI SAS
AS30781	Free Pro SAS
AS30844	Liquid Telecommunications Ltd
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
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
AS45437	Real World - The Core
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
AS55850	Mercury NZ Limited
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

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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
185.253.179.114	AS43872 Optinet U.K. Limited	`0.55ms` from London, GB
193.105.189.42	AS43872 Optinet U.K. Limited	`0.43ms` from London, GB
2a0b:180:dc01:eb01::50	AS43872 Optinet U.K. Limited	`0.94ms` from London, GB
2a0b:180::40	AS43872 Optinet U.K. Limited	`0.47ms` from London, GB
185.183.22.49	AS43872 Optinet U.K. Limited	`0.32ms` from London, GB
185.183.23.72	AS43872 Optinet U.K. Limited	`0.45ms` from London, GB
193.247.94.13	AS43872 Optinet U.K. Limited	`0.37ms` from London, GB
5.253.252.245	AS43872 Optinet U.K. Limited	`0.42ms` from London, GB
185.253.178.1	AS43872 Optinet U.K. Limited	`0.35ms` from London, GB
185.183.20.200	AS43872 Optinet U.K. Limited	`0.32ms` from London, GB
176.101.169.193	AS43872 Optinet U.K. Limited	`0.47ms` from London, GB
193.247.101.105	AS43872 Optinet U.K. Limited	`0.36ms` from London, GB
217.198.183.135	AS43872 Optinet U.K. Limited	`0.74ms` from London, GB
185.253.177.4	AS43872 Optinet U.K. Limited	`0.53ms` from London, GB
185.187.61.229	AS43872 Optinet U.K. Limited	`0.37ms` from London, GB
5.253.254.21	AS43872 Optinet U.K. Limited	`0.54ms` from London, GB
193.247.165.10	AS43872 Optinet U.K. Limited	`0.71ms` from London, GB
45.136.108.40	AS43872 Optinet U.K. Limited	`0.44ms` from London, GB
92.118.111.124	AS43872 Optinet U.K. Limited	`0.36ms` from London, GB
185.253.176.69	AS43872 Optinet U.K. Limited	`0.38ms` from London, GB
195.234.28.226	AS43872 Optinet U.K. Limited	`0.40ms` from London, GB
2a0b:180:dc02:eb01::54	AS43872 Optinet U.K. Limited	`0.97ms` from London, GB
5.253.255.184	AS43872 Optinet U.K. Limited	`0.39ms` from London, GB
2a0b:180:dc00:eb01::217	AS43872 Optinet U.K. Limited	`0.94ms` from London, GB
91.201.105.10	AS43872 Optinet U.K. Limited	`0.77ms` 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
71.7.49.240	AS7029 Windstream Communications LLC	`6.26ms` from Atlanta, US
6.3.54.144	AS668 United States Department of Defense (DoD)	`1.77ms` from Los Angeles, US
85.51.31.240	AS12479 Orange Espagne SA	`0.65ms` from Madrid, ES
20.27.117.128	AS8075 Microsoft Corporation	`0.30ms` from Osaka, JP
156.224.70.192	AS14315 1GSERVERS, LLC	`0.20ms` from Phoenix, US
191.33.11.112	AS18881 TELEFÔNICA BRASIL S.A	`2.07ms` from Rio de Janeiro, BR
178.130.38.16	AS12389 PJSC Rostelecom	`1.37ms` from Saint Petersburg, RU
186.236.98.112	AS28667 VERO S.A	`5.24ms` from Sao Paulo, BR
20.202.83.32	AS8075 Microsoft Corporation	`0.94ms` from Sao Paulo, BR
133.201.83.160	AS2518 BIGLOBE Inc.	`4.11ms` from Tokyo, JP
192.6.254.160	AS20115 Charter Communications LLC	`0.78ms` from Ashburn, US
189.174.221.208	AS8151 UNINET	`16.09ms` from Cancún, MX
73.75.46.128	AS7922 Comcast Cable Communications, LLC	`5.58ms` from Chicago, US
24.164.89.0	AS10796 Charter Communications Inc	`11.94ms` from Columbus, US
148.3.114.112	AS12430 VODAFONE ESPANA S.A.U.	`13.83ms` from Madrid, ES
87.14.189.192	AS3269 Telecom Italia S.p.A.	`3.57ms` from Milan, IT
52.66.90.224	AS16509 Amazon.com, Inc.	`0.10ms` from Mumbai, IN
92.129.22.224	AS3215 Orange S.A.	`11.05ms` from Paris, FR
40.223.2.192	AS54103 MOD Mission Critical, LLC	`0.23ms` from Phoenix, US
58.234.234.16	AS9318 SK Broadband Co Ltd	`7.27ms` from Seoul, KR
58.146.223.0	AS9698 LG HelloVision Corp.	`4.98ms` from Seoul, KR
89.28.221.64	AS38968 Abu-Ghazaleh Intellectual Property Ltd.	`0.67ms` from Amman, JO
181.3.4.144	AS7303 Telecom Argentina S.A.	`12.29ms` from Buenos Aires, AR
74.162.90.16	AS8075 Microsoft Corporation	`2.30ms` from Dubai, AE
93.204.247.208	AS3320 Deutsche Telekom AG	`3.91ms` from Duesseldorf, DE

Traceroute

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

traceroute -a -n -q1 -f4 193.247.165.66

traceroute to 193.247.165.66 (193.247.165.66): 64 hops max, 52 byte packets

4 [AS395954] 172.255.243.1 5.459 ms

5 *

6 *

7 *

8 [AS1299] 62.115.140.73 29.286 ms

9 *

10 [AS43872] 185.183.20.51 27.585 ms

11 *

12 [AS43872] 193.247.165.66 31.247 ms

Measurement taken from

IPinfo ProbeNet in Bologna, IT

On December 28th 2025

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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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