$ query “AS12213” --type=asn → 1 result(s)

AS12213 · CNSQ-AS12213

Centersquare

AS12213 is owned by Centersquare and is a mid-size transit provider, registered in the United States since 2017. The system announces a respectable 41 472 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in Australia and the United Kingdom, and a smaller footprint in another country.

  • Top 5% — Top 5% of all autonomous systems by reach and degree

Basic Information

Country
🇺🇸 United States
Category
Hosting
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
October 20, 2017
Last Changed
March 04, 2026
Last Seen
April 28, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
36 / 17
IPv6 Prefixes (raw / aggregated)
15 / 6
IPv4 Addresses
41 472
Largest IPv4 Prefix
/19 (8 192 addresses)
Largest IPv6 Prefix
/37
Geolocated Countries
🇺🇸 United States (36 384 IPs), 🇦🇺 Australia (8 192 IPs), 🇬🇧 United Kingdom (7 424 IPs) and 1 more
Prefix Changed
March 04, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
4 upstreams providing transit
Peers
5 networks exchanging traffic without transit
Downstream Customers
37 downstreams buying transit
Unclassified
2 unclassified BGP neighbors
Degree
48 unique BGP neighbors
Reach
151 networks in customer cone

Upstream Providers (4)

  • AS174 — COGENT-174 (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS6461 — ZAYO-6461 (Tier-1 transit)
  • AS7018 — ATT-INTERNET4 (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (36 total)

  • 131.226.192.0/19 (8 192 addresses (/19 prefix))
  • 149.137.224.0/19 (8 192 addresses (/19 prefix))
  • 149.137.192.0/20 (4 096 addresses (/20 prefix))
  • 131.226.240.0/20 (4 096 addresses (/20 prefix))
  • 24.170.128.0/20 (4 096 addresses (/20 prefix))
  • 131.226.232.0/21 (2 048 addresses (/21 prefix))
  • 149.137.216.0/21 (2 048 addresses (/21 prefix))
  • 24.170.144.0/21 (2 048 addresses (/21 prefix))
  • 208.67.48.0/21 (2 048 addresses (/21 prefix))
  • 91.132.68.0/22 (1 024 addresses (/22 prefix))
  • 131.226.224.0/22 (1 024 addresses (/22 prefix))
  • 193.93.84.0/22 (1 024 addresses (/22 prefix))
  • 24.170.154.0/23 (512 addresses (/23 prefix))
  • 74.80.248.0/24 (256 addresses (/24 prefix))
  • 74.80.242.0/24 (256 addresses (/24 prefix))
  • 151.242.102.0/24 (256 addresses (/24 prefix))
  • 185.143.78.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (15 total)

  • 2604:7ac0::/37
  • 2604:7ac0:e00::/39
  • 2604:7ac0:1000::/39
  • 2604:7ac0:800::/40
  • 2604:7ac0:d00::/40
  • 2a09:bf80::/40