$ query “AS3910” --type=asn → 1 result(s)

AS3910 · CENTURYLINK-EUROPE-LEGACY-QWEST

CenturyLink Communications LLC

AS3910 is run by CenturyLink Communications LLC and is a mid-size transit provider, established in the United States in 1996. The system announces a respectable 13 824 IPv4 addresses. Most of its address space is geolocated to the United States, with additional presence in the United Kingdom and France, and smaller footprints in 3 additional countries. No IPv6 support — it's 2026, just saying.

  • 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
October 01, 1996
Last Changed
March 04, 2026
Last Seen
April 29, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
22 / 21
IPv6 Prefixes (raw / aggregated)
0 / 0
IPv4 Addresses
13 824
Largest IPv4 Prefix
/20 (4 096 addresses)
Geolocated Countries
🇺🇸 United States (10 496 IPs), 🇬🇧 United Kingdom (6 496 IPs), 🇫🇷 France (64 IPs) and 3 more
Prefix Changed
March 04, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
2 upstreams providing transit
Downstream Customers
6 downstreams buying transit
Degree
8 unique BGP neighbors
Reach
64 networks in customer cone

Upstream Providers (2)

  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS209 — CENTURYLINK-US-LEGACY-QWEST

Prefix Lists

IPv4 Prefixes (22 total)

  • 204.98.208.0/20 (4 096 addresses (/20 prefix))
  • 65.120.24.0/21 (2 048 addresses (/21 prefix))
  • 46.182.56.0/21 (2 048 addresses (/21 prefix))
  • 185.42.152.0/22 (1 024 addresses (/22 prefix))
  • 67.148.48.0/23 (512 addresses (/23 prefix))
  • 65.148.33.0/24 (256 addresses (/24 prefix))
  • 65.154.234.0/24 (256 addresses (/24 prefix))
  • 63.231.211.0/24 (256 addresses (/24 prefix))
  • 65.100.13.0/24 (256 addresses (/24 prefix))
  • 63.229.104.0/24 (256 addresses (/24 prefix))
  • 63.228.185.0/24 (256 addresses (/24 prefix))
  • 65.152.197.0/24 (256 addresses (/24 prefix))
  • 63.230.240.0/24 (256 addresses (/24 prefix))
  • 65.158.30.0/24 (256 addresses (/24 prefix))
  • 63.225.65.0/24 (256 addresses (/24 prefix))
  • 67.148.66.0/24 (256 addresses (/24 prefix))
  • 67.148.251.0/24 (256 addresses (/24 prefix))
  • 97.107.230.0/24 (256 addresses (/24 prefix))
  • 63.159.181.0/24 (256 addresses (/24 prefix))
  • 63.147.85.0/24 (256 addresses (/24 prefix))
  • 205.168.23.0/24 (256 addresses (/24 prefix))