AS12213 — CNSQ-AS12213 - Centersquare

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
• AS3257 GTT Communications Inc.
• AS2686 AT&T Enterprises, LLC
• AS7018 AT&T Enterprises, LLC
• AS49915 Megaport (UK) Limited
• AS6939 Hurricane Electric LLC
• AS25091 IP-Max SA

Downstream networks

• AS26584 VERTAFORE, INC
• AS16910 Farm Credit Financial Partners, Inc.
• AS197594 Redstor Limited
• AS398172 Sirius XM Connected Vehicle Services Inc.
• AS26842 MFXCHANGE US, INC
• AS396002 TeleVoIPs
• AS396163 My Digital Shield, Inc.
• AS15248 Metaswitch Networks Corp.
• AS1379 SINCH INTERCONNECT LLC
• AS13690 American Medical Response, Inc.
• AS18679 internet4associations
• AS21701 Merative US L.P.
• AS3573 Accenture LLP
• AS20201 Caryco Tech
• AS29802 HIVELOCITY, Inc.
• AS396252 CYBERANNEX CORPORATION
• AS396333 Cywest Communications, Inc.
• AS396104 Karma Automotive, LLC
• AS402438 Viyu
• AS29971 iControl Systems USA LLC
• AS394880 e-Emphasys Technologies Inc
• AS23280 Venn Technology Corp
• AS401577 StrataCare Solutions LLC
• AS393548 AbriaCloud Technologies
• AS399321 Defend Edge

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS6461 Zayo Bandwidth
• AS7018 AT&T Enterprises, LLC
• AS26584 VERTAFORE, INC
• AS16910 Farm Credit Financial Partners, Inc.
• AS3257 GTT Communications Inc.
• AS398172 Sirius XM Connected Vehicle Services Inc.
• AS197594 Redstor Limited
• AS26842 MFXCHANGE US, INC
• AS2686 AT&T Enterprises, LLC
• AS396002 TeleVoIPs
• AS396163 My Digital Shield, Inc.
• AS15248 Metaswitch Networks Corp.
• AS1379 SINCH INTERCONNECT LLC
• AS13690 American Medical Response, Inc.
• AS18679 internet4associations
• AS21701 Merative US L.P.
• AS3573 Accenture LLP
• AS20201 Caryco Tech
• AS49915 Megaport (UK) Limited
• AS29802 HIVELOCITY, Inc.
• AS6939 Hurricane Electric LLC
• AS396252 CYBERANNEX CORPORATION
• AS396104 Karma Automotive, LLC
• AS396333 Cywest Communications, Inc.

Routing security

• RPKI: 48 valid, 0 invalid and 4 not-found announcements; 16 ROAs.
• ASPA: none published.
• IRR: 75% of announcements registered; 59 route objects.
• Listed in as-sets: AS-GTTCUST, AS-GTTCUST6, AS-IGNEMEA, AS-PNAPNYC, AS12213:AS-CONE, AS12213:AS-CUSTOMERS, AS49915:AS-CUSTOMERS, AS62760:AS-DECIX-ORD-CONNECTED, AS62760:AS-DECIX-ORD-RS, AS62760:AS-DECIX-ORD-RS-V6.

Internet exchanges

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