$ query “AS23520” --type=asn → 1 result(s)

AS23520 · LIBERTY-NETWORKS

Columbus Networks USA Inc.

AS23520 is run by Columbus Networks USA Inc. and is a major transit provider, registered in the United States since 2002. The system announces a solid 285 184 IPv4 addresses, including a /16, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in Guatemala and Colombia, and smaller footprints in 11 additional countries.

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

Basic Information

Country
🇺🇸 United States
Category
Hosting
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
April 02, 2002
Last Changed
March 04, 2026
Last Seen
April 19, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
118 / 15
IPv6 Prefixes (raw / aggregated)
2 / 2
IPv4 Addresses
285 184
Largest IPv4 Prefix
/16 (65 536 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 United States (165 120 IPs), 🇬🇹 Guatemala (112 656 IPs), 🇨🇴 Colombia (68 352 IPs) and 11 more
Prefix Changed
April 09, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
4 upstreams providing transit
Peers
18 networks exchanging traffic without transit
Downstream Customers
165 downstreams buying transit
Unclassified
8 unclassified BGP neighbors
Degree
195 unique BGP neighbors
Reach
36 986 networks in customer cone

Upstream Providers (4)

  • AS174 — COGENT-174 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS6762 — SEABONE-NET (Tier-1 transit)
  • AS6830 — LIBERTYGLOBAL (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (118 total)

  • 69.79.0.0/16 (65 536 addresses (/16 prefix))
  • 72.252.0.0/16 (65 536 addresses (/16 prefix))
  • 190.242.0.0/16 (65 536 addresses (/16 prefix))
  • 63.245.0.0/17 (32 768 addresses (/17 prefix))
  • 67.230.0.0/17 (32 768 addresses (/17 prefix))
  • 190.131.192.0/18 (16 384 addresses (/18 prefix))
  • 200.115.160.0/21 (2 048 addresses (/21 prefix))
  • 143.208.164.0/22 (1 024 addresses (/22 prefix))
  • 186.5.128.0/22 (1 024 addresses (/22 prefix))
  • 138.121.12.0/22 (1 024 addresses (/22 prefix))
  • 181.191.190.0/23 (512 addresses (/23 prefix))
  • 156.235.74.0/24 (256 addresses (/24 prefix))
  • 156.235.73.0/24 (256 addresses (/24 prefix))
  • 23.249.136.0/24 (256 addresses (/24 prefix))
  • 208.169.92.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (2 total)

  • 2607:f438::/32
  • 2803:f950::/32