CenturyLink IP Ranges
CenturyLink is a consumer and business internet provider. Its network is registered under AS209 with ARIN, and it announces 1625 IPv4 prefixes to the global routing table.
- Provider
- CenturyLink
- Primary ASN
- AS209
- Category
- ISP
- Headquarters
- Monroe, LA, USA
- Announced IPv4 prefixes
- 1625
- Registry
- ARIN
Known IP ranges
These prefixes are currently announced to the global routing table by AS209 (CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC). Prefix sets change over time - use WHOIS Lookup for the authoritative record on any specific address.
65.128.0.0/11
65.112.0.0/12
63.224.0.0/12
97.112.0.0/12
71.208.0.0/12
63.144.0.0/12
75.160.0.0/12
174.16.0.0/12
76.0.0.0/13
71.48.0.0/13
2602::/24
2604:8c0::/32
2001:460::/32 (IPv6)
What does a CenturyLink IP mean in a privacy test?
Seeing a CenturyLink IP address as your visible address means you are connecting directly through your CenturyLink line with no VPN active. If you expected a VPN exit, this tells you the tunnel is not carrying your traffic.
Related tools
Frequently asked questions
What IP ranges does CenturyLink use?
CenturyLink announces 1625 IPv4 prefixes and 32 IPv6 prefixes under AS209. Larger blocks include 65.128.0.0/11, 65.112.0.0/12, 63.224.0.0/12. The full current list is published by ARIN, and prefixes change as the network grows.
Why does a CenturyLink IP appear in my privacy test?
Seeing a CenturyLink IP address as your visible address means you are connecting directly through your CenturyLink line with no VPN active. If you expected a VPN exit, this tells you the tunnel is not carrying your traffic.
How large is the CenturyLink network?
By CAIDA's AS Rank, AS209 reaches 429 networks through its customer cone, covering roughly 42.9 million IPv4 addresses. That places it at global rank 131 among all autonomous systems.
How do I look up a CenturyLink IP address?
Enter the address in the MyIPScan IP Geolocation Lookup. Addresses in this network return AS209 (CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC). WHOIS Lookup shows the registered CIDR block for any specific address.
What ASN does CenturyLink use?
CenturyLink operates AS209, registered with ARIN and held by CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC. In a privacy test this ASN is what identifies traffic as belonging to their network.