AS23028 — TEAM-CYMRU

AS23028 announces 12 IPv4 prefixes covering 17,664 addresses and 2 IPv6 prefixes.

About this network

TEAM-CYMRU is the autonomous system for Team Cymru Inc.

What it's used for

• The address space is primarily held by Team Cymru Inc., with netnames such as TEAMC-1 covering the majority of the inventory.
• The AS announces 17664 IPv4 addresses and 36 IPv6 prefixes, maintaining 87 observed neighbours, a ratio consistent with a research and threat intelligence network rather than a transit provider.

Notable

• Registrants for the largest prefixes are Team Cymru Inc., while smaller blocks like 38.229.33.0/24 are registered to Cogent Communications, LLC, and 192.138.226.0/24 to Computer Systems Consulting Services.
• The address inventory is dominated by the 216.31.0.0/20 range, with additional space in 38.229.0.0/16 and 68.22.0.0/16.

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

Announced prefixes

• 38.229.33.0/24
• 38.229.252.0/24
• 68.22.187.0/24
• 192.138.226.0/24
• 203.28.18.0/24
• 204.74.64.0/24
• 216.31.0.0/19
• 216.31.32.0/24
• 216.31.34.0/23
• 216.31.36.0/22
• 216.31.40.0/21
• 216.31.48.0/20
• 2604:8800::/32
• 2620:0:6b0::/48

Upstream networks

• AS6939 Hurricane Electric LLC
• AS6461 Zayo Bandwidth
• AS2914 NTT America, Inc.
• AS3257 GTT Communications Inc.
• AS16509 Amazon.com, Inc.
• AS34549 meerfarbig GmbH & Co. KG
• AS24482 SG.GS
• AS23352 DEFT.COM
• AS37721 Virtual Technologies & Solutions
• AS1103 SURF B.V.
• AS50300 CustodianDC Limited
• AS48185 team.blue NV
• AS213241 TECHIT.BE SRL
• AS25091 IP-Max SA
• AS3741 Dimension Data
• AS50304 Blix Solutions AS
• AS37100 SEACOM Limited
• AS17639 Converge ICT Solutions Inc.
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50673 Serverius Holding B.V.
• AS3216 PJSC "Vimpelcom"

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS6461 Zayo Bandwidth
• AS2914 NTT America, Inc.
• AS3257 GTT Communications Inc.
• AS16509 Amazon.com, Inc.
• AS34549 meerfarbig GmbH & Co. KG
• AS24482 SG.GS
• AS23352 DEFT.COM
• AS37721 Virtual Technologies & Solutions
• AS1103 SURF B.V.
• AS50300 CustodianDC Limited
• AS48185 team.blue NV
• AS213241 TECHIT.BE SRL
• AS25091 IP-Max SA
• AS50304 Blix Solutions AS
• AS37100 SEACOM Limited
• AS3741 Dimension Data
• AS17639 Converge ICT Solutions Inc.
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50673 Serverius Holding B.V.
• AS3216 PJSC "Vimpelcom"

Internet exchanges

• IX.br (PTT.br) São Paulo — São Paulo, Brazil
• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• Equinix Internet Exchange Ashburn — Ashburn, United States
• Rwanda Internet exchange — Kigali, Rwanda