ıpdex
United States

AS209

CenturyLink Communications, LLC ISP registered in United States

1,620IPv4 prefixes
32IPv6 prefixes
1%RPKI-valid
#144AS Rank
327/327RIS visibility
#20Rank in United States
1998-11-13Allocated

CenturyLink Communications, LLC (AS209) — ISP, registered in United States. announces 1,620 IPv4 prefixes + 32 IPv6 prefixes. Rank in United States: #20. Allocated: 1998-11-13.

Announced prefixes · 1,652

RPKI: rpki.cloudflare.com · 2026-06-20

Routing: 1,620 IPv4 · 32 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-19

Prefix history

0 1K 2026-06-12 2026-06-19
Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)
Data table
DayAnnounced prefixes
2026-06-121652
2026-06-131652
2026-06-141652
2026-06-161652
2026-06-171652
2026-06-191652

AS topology · Customer cone 406

Peers · 24

  • AS3356 Level 3 Parent, LLC
  • AS1299 Arelion Sweden AB
  • AS3257 GTT Communications Inc.
  • AS174 Cogent Communications, LLC
  • AS2914 NTT America, Inc.
  • AS6453 TATA COMMUNICATIONS (AMERICA) INC

Customers · 385

  • AS3561 CenturyLink Communications, LLC
  • AS18530 Isomedia, Inc.
  • AS36012 HUNTER COMMUNICATIONS
  • AS22561 CenturyLink Communications, LLC
  • AS297 National Aeronautics and Space Administration
  • AS3910 CenturyLink Communications, LLC
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