AS12213 — CNSQ-AS12213

Network type: hosting

AS12213 announces 25 IPv4 prefixes covering 39,680 addresses and 5 IPv6 prefixes.

About this network

The colocation network of Centersquare, the data centre operator assembled out of the former Cyxtera and Evoque estates.

What it's used for

• Carrier-neutral colocation and interconnection, with address space assigned to tenants inside the facilities.

Notable

• 46 observed BGP neighbours against only 40,000 addresses. That inversion is the signature of an interconnection business: the value is in how many networks meet inside the building, not in how much address space the operator holds.
• One block sits in RIPE rather than ARIN, registered to Cyxtera Technology UK Limited under the netname UK-CYXTERA-20181219. Cyxtera was the company spun out of CenturyLink's data centre business in 2017 and broken up in 2023, with the facilities ending up under the Centersquare name. The 2018 date is baked into the netname.

Interesting

• Data centre estates change hands far more often than the networks inside them get renumbered, so a colocation AS accumulates registry records naming every previous owner. Here the announcer, the ARIN registrant and the RIPE netname are three different companies in the same lineage.

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

Announced prefixes

• 24.170.128.0/21
• 24.170.140.0/22
• 24.170.144.0/21
• 24.170.154.0/23
• 74.80.242.0/24
• 74.80.248.0/24
• 91.132.68.0/22
• 108.186.178.0/24
• 131.226.192.0/19
• 131.226.224.0/22
• 131.226.232.0/22
• 131.226.236.0/24
• 131.226.238.0/23
• 131.226.240.0/20
• 149.137.192.0/20
• 149.137.216.0/21
• 149.137.224.0/20
• 149.137.240.0/21
• 149.137.248.0/23
• 149.137.250.0/24
• 149.137.252.0/24
• 149.137.254.0/23
• 151.242.102.0/24
• 193.93.84.0/22
• 208.67.48.0/21
• 2604:7ac0::/36
• 2604:7ac0:d00::/40
• 2604:7ac0:e00::/39
• 2604:7ac0:1000::/39
• 2a09:bf80::/40

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS6461 Zayo Bandwidth
• AS49915 Megaport (UK) Limited
• AS2686 AT&T Enterprises, LLC
• AS7018 AT&T Enterprises, LLC
• AS6939 Hurricane Electric LLC
• AS25091 IP-Max SA

Downstream networks

• AS26584 VERTAFORE, INC
• AS197594 Redstor Limited
• AS398172 Sirius XM Connected Vehicle Services Inc.
• AS26842 MFXCHANGE US, INC
• AS15248 Metaswitch Networks Corp.
• AS396163 My Digital Shield, Inc.
• AS1379 SINCH INTERCONNECT LLC
• AS13690 American Medical Response, Inc.
• AS10493 Grand Central Networks Inc.
• AS16910 Farm Credit Financial Partners, Inc.
• AS20201 Caryco Tech
• AS18679 internet4associations
• AS3573 Accenture LLP
• AS21701 Merative US L.P.
• AS396002 TeleVoIPs
• AS29802 HIVELOCITY, Inc.
• AS29971 iControl Systems USA LLC
• AS402438 Viyu
• AS18584 Ankura Consulting Group LLC
• AS30031 Mimecast North America Inc
• AS40372 Schweser
• AS396104 Karma Automotive, LLC
• AS396333 Cywest Communications, Inc.
• AS394880 e-Emphasys Technologies Inc
• AS23280 Venn Technology Corp

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS6461 Zayo Bandwidth
• AS7018 AT&T Enterprises, LLC
• AS26584 VERTAFORE, INC
• AS49915 Megaport (UK) Limited
• AS2686 AT&T Enterprises, LLC
• AS197594 Redstor Limited
• AS398172 Sirius XM Connected Vehicle Services Inc.
• AS26842 MFXCHANGE US, INC
• AS15248 Metaswitch Networks Corp.
• AS396163 My Digital Shield, Inc.
• AS1379 SINCH INTERCONNECT LLC
• AS13690 American Medical Response, Inc.
• AS10493 Grand Central Networks Inc.
• AS16910 Farm Credit Financial Partners, Inc.
• AS18679 internet4associations
• AS20201 Caryco Tech
• AS3573 Accenture LLP
• AS21701 Merative US L.P.
• AS396002 TeleVoIPs
• AS29802 HIVELOCITY, Inc.
• AS6939 Hurricane Electric LLC
• AS40372 Schweser
• AS402438 Viyu
• AS396104 Karma Automotive, LLC

Internet exchanges

• DE-CIX Chicago — Chicago, United States
• Ninja-IX Phoenix — Phoenix, United States