$ query “AS6325” --type=asn → 1 result(s)

AS6325 · ILLINOIS-CENTURY

Illinois Century Network

AS6325 is operated by Illinois Century Network and serves as a mid-size transit provider, based in the United States since 2001. The system announces a solid 757 760 IPv4 addresses, including a /15, and supports IPv6. Most of its address space is geolocated to the United States. This AS's prefix announcements have been recently modified.

  • 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 31, 2001
Last Changed
March 04, 2026
Last Seen
April 30, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
87 / 13
IPv6 Prefixes (raw / aggregated)
5 / 1
IPv4 Addresses
757 760
Largest IPv4 Prefix
/15 (131 072 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 United States (1 220 608 IPs)
Prefix Changed
May 01, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
5 upstreams providing transit
Peers
12 networks exchanging traffic without transit
Downstream Customers
41 downstreams buying transit
Degree
58 unique BGP neighbors
Reach
43 networks in customer cone

Upstream Providers (5)

  • AS174 — COGENT-174 (Tier-1 transit)
  • AS6461 — ZAYO-6461 (Tier-1 transit)
  • AS7018 — ATT-INTERNET4 (Tier-1 transit)
  • AS32787 — PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK
  • AS22335 — MREN

Prefix Lists

IPv4 Prefixes (87 total)

  • 209.174.0.0/15 (131 072 addresses (/15 prefix))
  • 216.124.0.0/15 (131 072 addresses (/15 prefix))
  • 207.63.0.0/16 (65 536 addresses (/16 prefix))
  • 66.99.0.0/16 (65 536 addresses (/16 prefix))
  • 163.191.0.0/16 (65 536 addresses (/16 prefix))
  • 64.107.0.0/16 (65 536 addresses (/16 prefix))
  • 209.7.0.0/16 (65 536 addresses (/16 prefix))
  • 66.158.0.0/17 (32 768 addresses (/17 prefix))
  • 72.3.0.0/17 (32 768 addresses (/17 prefix))
  • 206.166.0.0/17 (32 768 addresses (/17 prefix))
  • 65.79.0.0/17 (32 768 addresses (/17 prefix))
  • 64.150.0.0/17 (32 768 addresses (/17 prefix))
  • 136.144.0.0/20 (4 096 addresses (/20 prefix))

IPv6 Prefixes (5 total)

  • 2001:1848::/32