AS13631 — CIG-AS

AS13631 announces 10 IPv4 prefixes covering 3,328 addresses and 1 IPv6 prefixes.

About this network

Fifty-six BGP neighbours for 3,328 addresses, and not one of them answers a reverse lookup.

What it's used for

• A trading firm's network. 3,328 addresses across ten IPv4 prefixes, the IPv6 block 2a13:bb87::/48, and fifty-six observed BGP neighbours.

Notable

• Blocks are registered to three separate regional entities, with netnames CIG, CEAL-HK and UK-CITADEL.
• 46.255.29.0/24 is netname UK-CITADEL-20240708, carrying the date it was created.
• 64.212.61.0/24 is netname LPL-141--CIGL-4-64-212-61, with a doubled hyphen in the middle.
• 38.57.54.0/24 is netname COGENT-A, registered to a transit provider.
• Eighteen addresses were queried for reverse DNS and none returned a name.
• One prefix's registry lookup failed, so nothing is known about its registration here.

Interesting

• Fifty-six neighbours against a few thousand addresses is one of the most extreme ratios a network can have. This is a firm that peers directly with exchanges, venues and data providers in three regions, because the value is in the shortness of each path rather than in capacity.
• A completely silent reverse zone across every block, in every region, is consistent enough to be policy. Nothing volunteers a role, a venue or a location.
• The date stamped into one netname records when that registration was made, which is the only timestamp any of these objects offers.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 38.57.54.0/24
• 46.255.29.0/24
• 64.22.160.0/23
• 64.22.164.0/24
• 64.22.172.0/24
• 64.212.61.0/24
• 103.187.70.0/23
• 194.59.56.0/23
• 202.130.214.0/24
• 216.52.14.0/24
• 2a13:bb87::/48

Upstream networks

• AS13335 Cloudflare, Inc.
• AS6939 Hurricane Electric LLC
• AS3356 Level 3 Parent, LLC
• AS174 Cogent Communications, LLC
• AS23764 CTGNet
• AS8220 COLT Technology Services Group Limited
• AS1299 Arelion Sweden AB
• AS6461 Zayo Bandwidth
• AS24482 SG.GS
• AS21859 Zenlayer Inc
• AS34549 meerfarbig GmbH & Co. KG
• AS22652 Videotron Ltee
• AS37721 Virtual Technologies & Solutions
• AS57463 NetIX Communications JSC
• AS4657 StarHub Ltd
• AS1221 Telstra Limited
• AS48185 team.blue NV
• AS293 ESnet
• AS50300 CustodianDC Limited
• AS33891 Core-Backbone GmbH
• AS3741 Dimension Data
• AS852 TELUS Communications Inc.
• AS37100 SEACOM Limited
• AS48362 Stadtwerke Feldkirch
• AS50304 Blix Solutions AS

Adjacent networks

• AS13335 Cloudflare, Inc.
• AS6939 Hurricane Electric LLC
• AS3356 Level 3 Parent, LLC
• AS174 Cogent Communications, LLC
• AS23764 CTGNet
• AS8220 COLT Technology Services Group Limited
• AS1299 Arelion Sweden AB
• AS6461 Zayo Bandwidth
• AS24482 SG.GS
• AS21859 Zenlayer Inc
• AS34549 meerfarbig GmbH & Co. KG
• AS22652 Videotron Ltee
• AS37721 Virtual Technologies & Solutions
• AS57463 NetIX Communications JSC
• AS293 ESnet
• AS1221 Telstra Limited
• AS48185 team.blue NV
• AS4657 StarHub Ltd
• AS50300 CustodianDC Limited
• AS3741 Dimension Data
• AS852 TELUS Communications Inc.
• AS17639 Converge ICT Solutions Inc.
• AS50304 Blix Solutions AS
• AS33891 Core-Backbone GmbH
• AS48362 Stadtwerke Feldkirch

Internet exchanges

• LINX LON1 — London, United Kingdom
• Equinix Internet Exchange Singapore — Singapore, Singapore
• London Network Access Point — London, United Kingdom
• DE-CIX New York — New York, United States
• Equinix Internet Exchange Chicago — Chicago, United States
• FL-IX - The Florida Internet Exchange / Community IX - Florida — Miami, United States