$ query “AS203” --type=asn → 1 result(s)

AS203 · CENTURYLINK-LEGACY-LVLT-203

Level 3 Parent LLC

AS203 belongs to Level 3 Parent LLC and is an enterprise stub network, registered in the United States since 2002. The system announces a solid 183 040 IPv4 addresses, including a /16. Its primary geographic footprint is in the United States, with additional presence in Australia and Germany, and a smaller footprint in another country. This AS has recently updated its prefix announcements. No IPv6 support — it's 2026, just saying.

Basic Information

Country
🇺🇸 United States
Category
Business
Network Role
Stub Network
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
June 05, 2002
Last Changed
May 01, 2026
Last Seen
May 18, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
146 / 88
IPv6 Prefixes (raw / aggregated)
0 / 0
IPv4 Addresses
183 040
Largest IPv4 Prefix
/16 (65 536 addresses)
Geolocated Countries
🇺🇸 United States (181 248 IPs), 🇦🇺 Australia (1 536 IPs), 🇩🇪 Germany (512 IPs) and 1 more
Prefix Changed
May 16, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
1 upstream providing transit
Degree
1 unique BGP neighbor
Reach
0 networks in customer cone

Upstream Providers (1)

  • AS3356 — LEVEL3 (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (146 total)

  • 170.46.0.0/16 (65 536 addresses (/16 prefix))
  • 156.42.0.0/16 (65 536 addresses (/16 prefix))
  • 161.209.192.0/19 (8 192 addresses (/19 prefix))
  • 216.163.240.0/20 (4 096 addresses (/20 prefix))
  • 161.209.96.0/20 (4 096 addresses (/20 prefix))
  • 216.235.200.0/21 (2 048 addresses (/21 prefix))
  • 168.244.192.0/21 (2 048 addresses (/21 prefix))
  • 168.244.8.0/22 (1 024 addresses (/22 prefix))
  • 209.164.192.0/22 (1 024 addresses (/22 prefix))
  • 168.244.4.0/22 (1 024 addresses (/22 prefix))
  • 205.139.104.0/22 (1 024 addresses (/22 prefix))
  • 63.128.0.0/22 (1 024 addresses (/22 prefix))
  • 168.244.164.0/22 (1 024 addresses (/22 prefix))
  • 63.128.8.0/22 (1 024 addresses (/22 prefix))
  • 209.67.132.0/22 (1 024 addresses (/22 prefix))
  • 209.67.136.0/22 (1 024 addresses (/22 prefix))
  • 168.244.200.0/22 (1 024 addresses (/22 prefix))
  • 168.244.174.0/23 (512 addresses (/23 prefix))
  • 204.153.154.0/23 (512 addresses (/23 prefix))
  • 63.150.74.0/23 (512 addresses (/23 prefix))
  • 205.139.102.0/23 (512 addresses (/23 prefix))
  • 143.199.140.0/23 (512 addresses (/23 prefix))
  • 205.140.220.0/23 (512 addresses (/23 prefix))
  • 64.241.120.0/23 (512 addresses (/23 prefix))
  • 209.164.204.0/23 (512 addresses (/23 prefix))
  • 65.240.184.0/23 (512 addresses (/23 prefix))
  • 209.164.208.0/23 (512 addresses (/23 prefix))
  • 209.164.220.0/23 (512 addresses (/23 prefix))
  • 148.59.168.0/23 (512 addresses (/23 prefix))
  • 64.208.127.0/24 (256 addresses (/24 prefix))
  • 192.42.110.0/24 (256 addresses (/24 prefix))
  • 143.199.109.0/24 (256 addresses (/24 prefix))
  • 143.199.135.0/24 (256 addresses (/24 prefix))
  • 143.199.28.0/24 (256 addresses (/24 prefix))
  • 143.199.145.0/24 (256 addresses (/24 prefix))
  • 143.199.222.0/24 (256 addresses (/24 prefix))
  • 128.177.179.0/24 (256 addresses (/24 prefix))
  • 66.194.187.0/24 (256 addresses (/24 prefix))
  • 158.120.127.0/24 (256 addresses (/24 prefix))
  • 66.193.107.0/24 (256 addresses (/24 prefix))
  • 65.222.131.0/24 (256 addresses (/24 prefix))
  • 161.209.225.0/24 (256 addresses (/24 prefix))
  • 64.209.141.0/24 (256 addresses (/24 prefix))
  • 8.7.155.0/24 (256 addresses (/24 prefix))
  • 168.244.33.0/24 (256 addresses (/24 prefix))
  • 168.244.37.0/24 (256 addresses (/24 prefix))
  • 168.244.40.0/24 (256 addresses (/24 prefix))
  • 168.244.80.0/24 (256 addresses (/24 prefix))
  • 64.22.148.0/24 (256 addresses (/24 prefix))
  • 168.244.168.0/24 (256 addresses (/24 prefix))