$ query “AS8001” --type=asn → 1 result(s)
AS8001 — COLOGIX
Cologix Inc
AS8001 is a mid-size transit provider registered to Cologix Inc, based in the United States since 1996. The network announces a solid 432 384 IPv4 addresses, including a /16. Supports IPv6.
- 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
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 45 / 29
- IPv6 Prefixes (raw / aggregated)
- 5 / 3
- IPv4 Addresses
- 432 384
- Largest IPv4 Prefix
- /16 (65 536 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇺🇸 US (29 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 432 384 total (0.00%)
Connectivity Summary
- Upstream Providers
- 5 upstream autonomous systems providing transit
- Peers
- 24 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 22 downstream autonomous systems buying transit
- Degree
- 53 unique BGP neighbors (providers + customers + peers)
- Reach
- 25 — customer cone size measuring network influence
- Degree Rank
- #2 827
- Reach Rank
- #2 045
Upstream Providers (5)
Prefix Lists
IPv4 Prefixes (45 total)
- 66.246.0.0/16 (65 536 addresses)
- 67.196.0.0/16 (65 536 addresses)
- 70.47.0.0/16 (65 536 addresses)
- 209.123.0.0/16 (65 536 addresses)
- 64.21.0.0/17 (32 768 addresses)
- 66.29.0.0/17 (32 768 addresses)
- 207.99.0.0/17 (32 768 addresses)
- 64.247.0.0/18 (16 384 addresses)
- 207.192.64.0/18 (16 384 addresses)
- 216.118.64.0/18 (16 384 addresses)
- 64.21.128.0/19 (8 192 addresses)
- 64.21.160.0/20 (4 096 addresses)
- 64.21.176.0/21 (2 048 addresses)
- 74.116.192.0/21 (2 048 addresses)
- 199.233.220.0/22 (1 024 addresses)
- 208.94.172.0/22 (1 024 addresses)
- 198.102.78.0/23 (512 addresses)
- 216.69.194.0/23 (512 addresses)
- 216.69.206.0/23 (512 addresses)
- 216.69.212.0/23 (512 addresses)
- 66.104.102.0/24 (256 addresses)
- 71.5.34.0/24 (256 addresses)
- 77.67.101.0/24 (256 addresses)
- 199.188.170.0/24 (256 addresses)
- 208.76.6.0/24 (256 addresses)
- 216.69.192.0/24 (256 addresses)
- 216.69.201.0/24 (256 addresses)
- 216.69.219.0/24 (256 addresses)
- 216.69.223.0/24 (256 addresses)
IPv6 Prefixes (5 total)
- 2001:518::/32
- 2605:4400:2::/48
- 2605:4400:5::/48