$ query “AS8001” --type=asn → 1 result(s)

AS8001 · COLOGIX

Cologix Inc

AS8001 is owned by Cologix Inc and is a mid-size transit provider, established in the United States in 1996. The system announces a solid 431 360 IPv4 addresses, including a /16, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in Hong Kong SAR China.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • Pioneer — Registered before the year 2000

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
August 22, 1996
Last Changed
October 01, 2026
Last Seen
October 12, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
54 / 28
IPv6 Prefixes (raw / aggregated)
6 / 3
IPv4 Addresses
431 360
Largest IPv4 Prefix
/16 (65 536 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 United States (431 104 IPs), 🇭🇰 Hong Kong SAR China (256 IPs)
Prefix Changed
September 24, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
4 upstreams providing transit
Peers
24 networks exchanging traffic without transit
Downstream Customers
21 downstreams buying transit
Unclassified
3 unclassified BGP neighbors
Degree
52 unique BGP neighbors
Reach
21 networks in customer cone

Upstream Providers (4)

  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS174 — COGENT-174 (Tier-1 transit)
  • AS6461 — ZAYO-6461 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (54 total)

  • 66.246.0.0/16 (65 536 addresses (/16 prefix))
  • 67.196.0.0/16 (65 536 addresses (/16 prefix))
  • 70.47.0.0/16 (65 536 addresses (/16 prefix))
  • 209.123.0.0/16 (65 536 addresses (/16 prefix))
  • 64.21.0.0/17 (32 768 addresses (/17 prefix))
  • 66.29.0.0/17 (32 768 addresses (/17 prefix))
  • 207.99.0.0/17 (32 768 addresses (/17 prefix))
  • 64.247.0.0/18 (16 384 addresses (/18 prefix))
  • 207.192.64.0/18 (16 384 addresses (/18 prefix))
  • 216.118.64.0/18 (16 384 addresses (/18 prefix))
  • 64.21.128.0/19 (8 192 addresses (/19 prefix))
  • 64.21.160.0/20 (4 096 addresses (/20 prefix))
  • 64.21.176.0/21 (2 048 addresses (/21 prefix))
  • 74.116.192.0/21 (2 048 addresses (/21 prefix))
  • 208.94.172.0/22 (1 024 addresses (/22 prefix))
  • 198.102.78.0/23 (512 addresses (/23 prefix))
  • 216.69.194.0/23 (512 addresses (/23 prefix))
  • 216.69.206.0/23 (512 addresses (/23 prefix))
  • 216.69.212.0/23 (512 addresses (/23 prefix))
  • 66.104.102.0/24 (256 addresses (/24 prefix))
  • 71.5.34.0/24 (256 addresses (/24 prefix))
  • 77.67.101.0/24 (256 addresses (/24 prefix))
  • 199.188.170.0/24 (256 addresses (/24 prefix))
  • 208.76.6.0/24 (256 addresses (/24 prefix))
  • 216.69.192.0/24 (256 addresses (/24 prefix))
  • 216.69.201.0/24 (256 addresses (/24 prefix))
  • 216.69.219.0/24 (256 addresses (/24 prefix))
  • 216.69.223.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (6 total)

  • 2001:518::/32
  • 2605:4400:2::/48
  • 2605:4400:5::/48