ASN Lookup Tool

Optinet U.K. Limited optinet.co.uk GB GB 23 Routes

AS Data

AS43872

AS43872Optinet U.K. Limited

AS Number 43872
AS Name OPTINET
Organization Optinet U.K. Limited (org-oul4-ripe)
Country GB
Website optinet.co.uk
Number of IPv4 Routes 16
Number of IPv6 Routes 7
ASN type ISP
Allocation Status ASSIGNED
Registry RIPE
Date Allocated 2016-12-20

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Use ASN data for AS43872 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
217.198.183.0/24 256
5.253.252.0/22 1024
2a0b:180::/29 ~634×10²⁷
2a10:c740::/29 ~634×10²⁷
185.187.61.0/24 256
91.201.105.0/24 256
193.105.189.0/24 256
2a0d:1e80::/29 ~634×10²⁷
195.234.28.0/24 256
185.183.20.0/22 1024
193.247.94.0/24 256
193.247.103.0/24 256
84.38.246.0/24 256
193.247.101.0/24 256
2a10:cac0::/29 ~634×10²⁷
92.118.111.0/24 256
45.136.108.0/24 256
193.247.165.0/24 256
185.253.176.0/22 1024
176.101.169.0/24 256
2a10:c8c0::/29 ~634×10²⁷
2a10:c9c0::/29 ~634×10²⁷
2a10:c7c0::/29 ~634×10²⁷

Raw Whois Response

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to 'AS43075 - AS44168'

as-block:       AS43075 - AS44168
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2023-12-11T15:09:58Z
last-modified:  2023-12-11T15:09:58Z
source:         RIPE

% Information related to 'AS43872'

% Abuse contact for 'AS43872' is 'abuse@optinet.co.uk'

aut-num:        AS43872
as-name:        OPTINET
org:            ORG-OUL4-RIPE
import:         from AS174 accept ANY
export:         to AS174 announce AS43872
import:         from AS3257 accept ANY
export:         to AS3257 announce AS43872
import:         from AS6461 accept ANY
export:         to AS6461 announce AS43872
import:         from AS1299 accept ANY
export:         to AS1299 announce AS43872
admin-c:        SP16055-RIPE
tech-c:         NO1784-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         uk-optinet-1-mnt
created:        2016-12-20T14:17:07Z
last-modified:  2025-11-28T12:30:51Z
source:         RIPE

organisation:   ORG-OUL4-RIPE
org-name:       Optinet U.K. Limited
country:        GB
reg-nr:         10482483
org-type:       LIR
address:        Floor 24 One Canada Square
address:        E14 5AA
address:        London
address:        UNITED KINGDOM
phone:          +442033193701
admin-c:        SP16055-RIPE
tech-c:         NO1784-RIPE
abuse-c:        AR56859-RIPE
mnt-ref:        uk-optinet-1-mnt
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         uk-optinet-1-mnt
created:        2016-12-19T14:53:59Z
last-modified:  2026-05-13T07:23:15Z
source:         RIPE # Filtered

role:           Network Operations
address:        Skyline Plaza, 45 Victoria Avenue
address:        SS2 6BB
address:        Southend-ON-Sea
address:        UNITED KINGDOM
phone:          +4402033193701
nic-hdl:        NO1784-RIPE
mnt-by:         uk-optinet-1-mnt
created:        2019-11-19T09:00:25Z
last-modified:  2019-11-19T09:00:25Z
source:         RIPE # Filtered

person:         Sean Pearman
address:        Skyline Plaza
address:        45 Victoria Avenue
address:        Southend
address:        Essex
phone:          +44(0)2033193701
nic-hdl:        SP16055-RIPE
mnt-by:         uk-optinet-1-mnt
created:        2016-12-19T14:53:59Z
last-modified:  2019-03-11T14:30:26Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.123 (ABERDEEN)

Parsed Whois Response

Peers

AS Number Description Country
AS12552 GlobalConnect AB SE
AS28792 Public Internet Ltd GB
AS35266 EX Networks Limited GB
AS60602 Inovare-Prim SRL MD
AS286 GTT Communications Inc. US
AS38880 Micron21 Datacentre Pty Ltd AU
AS14537 Continent 8 LLC US
AS198150 SIACOM JSC GE
AS6908 Six Degrees Technology Group Limited GB
AS37468 Angola Cables AO
AS47957 Worldline IGSA SA FR
AS34288 Kantonsschule Zug CH
AS37497 Network Platforms PTY LTD ZA
AS6461 Zayo Bandwidth US
AS53062 GGNET TELECOMUNICACOES LTDA BR
AS58453 China Mobile International Limited HK
AS398465 Rackdog, LLC US
AS13237 euNetworks GmbH DE
AS14840 BR.Digital Telecom BR
AS32590 Valve Corporation US
AS8801 Rocket Fibre Ltd GB
AS1031 PEER 1031 LLC US
AS1828 Unitas Global US
AS1299 Arelion Sweden AB SE
AS999 CORIX NETWORKS US
AS4849 S3 Company Ltd BG
AS3257 GTT Communications Inc. US
AS37497 Network Platforms (PTY) LTD ZA
AS202076 Fibre Networks (Scotland) Limited GB
AS45701 PT. Internet Madju Abad Milenindo ID
AS14630 Invesco Group Services, Inc. US
AS60171 AFR-IX TELECOM S.A. ES
AS34177 Celeste SAS FR
AS31742 Sota Solutions Ltd. GB
AS37680 Cool Ideas Service Provider Pty Ltd ZA
AS52025 ParadoxNetworks Limited GB
AS4455 IX Reach Ltd GB
AS37680 Cool Ideas Service Provider (Pty) Ltd ZA
AS24940 Hetzner Online GmbH DE
AS37100 SEACOM Limited MU
AS39120 Convergenze S.p.A. IT
AS12969 Ljosleidarinn ehf IS
AS52075 Wifirst S.A.S. FR
AS286 GTT Communications Inc. NL
AS41327 Fiber Telecom S.p.A. IT
AS20562 Broadband Hosting B.V. NL
AS25091 IP-Max SA CH
AS132337 Axclusive SG
AS49544 i3D.net B.V NL
AS63927 RISE HK
AS199081 Lancom Ltd. GR
AS62167 Tismi BV NL
AS7195 EDGEUNO S.A.S CO
AS39351 31173 Services AB SE
AS6939 Hurricane Electric LLC US
AS8359 MTS PJSC RU
AS31742 Sotaconnect Network GB
AS206014 SARL IPSET FR
AS271253 LINK BRASIL TELECOMUNICACOES LTDA BR
AS9498 Bharti Airtel Ltd IN

Upstreams

AS Number Description Country
AS9304 HGC Global Communications Limited HK
AS12552 GlobalConnect AB SE
AS7195 EDGEUNO S.A.S CO
AS34927 iFog GmbH CH
AS39351 31173 Services AB SE
AS6939 Hurricane Electric LLC US
AS8359 MTS PJSC RU
AS25091 IP Max SA CH
AS286 GTT Communications Inc. US
AS33891 Core Backbone GmbH DE
AS34177 Celeste SAS FR
AS37468 Angola Cables AO
AS60171 AFR IX TELECOM S.A. ES
AS15802 Emirates Integrated Telecommunications Company PJSC AE
AS4455 IX Reach Ltd GB
AS37497 Network Platforms PTY LTD ZA
AS61049 Exascale Ltd GB
AS6461 Zayo Bandwidth US
AS29169 GANDI SAS FR
AS8220 COLT Technology Services Group Limited GB
AS30781 Free Pro SAS FR
AS174 Cogent Communications, LLC US
AS41327 Fiber Telecom S.p.A. IT
AS8455 atom86 BV NL
AS30844 Liquid Telecommunications Ltd GB
AS1299 Arelion Sweden AB SE
AS20562 Broadband Hosting B.V. NL
AS3257 GTT Communications Inc. US
AS215638 Cilix Limited GB
AS9044 BSE Software GmbH CH
AS137409 GSL Networks Pty LTD AU
AS34549 meerfarbig GmbH & Co. KG DE

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Frequently Asked Questions

ASN AS43872 is an Autonomous System Number used to identify a network for BGP internet routing.
AS43872 is listed under Optinet U.K. Limited.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.