Autonomous System

AS3561 CenturyLink Communications, LLC

ISPActiveUnited StatesARIN

AS3561 (CENTURYLINK-LEGACY-SAVVIS) is an ISP network operated by CenturyLink Communications, LLC in United States, registered with ARIN. It has 672 IPv4 prefixes with 7,450,624 addresses and 1 IPv6 prefix, which makes it the 89th largest of 82,534 active autonomous systems by IPv4 space.

IPv4 addresses7,450,624in 672 prefixes
IPv6 prefixes1≈ 4.8 × 10²⁴ addresses
Size rank#89of 82,534 active ASNs
Abuser scoreVery Low0.01% of its addresses flagged · method

Details

OrganizationCenturyLink Communications, LLC
AS nameCENTURYLINK-LEGACY-SAVVIS
Websitecenturylink.com
Country United States (US)
Network typeISP
RegistryARIN
Abuse contactabuse@aup.lumen.com
Registered1998-10-07
Last updated2018-11-15

IPv4 prefixes

672 prefixes · 7,450,624 addresses
NetworkAddressesFirst – last address
208.144.0.0/13524,288208.144.0.0 – 208.151.255.255
64.240.0.0/14262,14464.240.0.0 – 64.243.255.255
206.100.0.0/14262,144206.100.0.0 – 206.103.255.255
216.32.0.0/14262,144216.32.0.0 – 216.35.255.255
216.88.0.0/14262,144216.88.0.0 – 216.91.255.255
66.100.0.0/15131,07266.100.0.0 – 66.101.255.255
204.70.0.0/15131,072204.70.0.0 – 204.71.255.255
205.138.0.0/15131,072205.138.0.0 – 205.139.255.255
205.218.0.0/15131,072205.218.0.0 – 205.219.255.255
206.26.0.0/15131,072206.26.0.0 – 206.27.255.255
207.0.0.0/15131,072207.0.0.0 – 207.1.255.255
208.134.0.0/15131,072208.134.0.0 – 208.135.255.255
208.136.0.0/15131,072208.136.0.0 – 208.137.255.255
208.158.0.0/15131,072208.158.0.0 – 208.159.255.255
63.128.0.0/1665,53663.128.0.0 – 63.128.255.255
63.137.0.0/1665,53663.137.0.0 – 63.137.255.255
64.14.0.0/1665,53664.14.0.0 – 64.14.255.255
165.193.0.0/1665,536165.193.0.0 – 165.193.255.255
167.215.0.0/1665,536167.215.0.0 – 167.215.255.255
205.136.0.0/1665,536205.136.0.0 – 205.136.255.255
205.216.0.0/1665,536205.216.0.0 – 205.216.255.255
206.25.0.0/1665,536206.25.0.0 – 206.25.255.255
206.31.0.0/1665,536206.31.0.0 – 206.31.255.255
206.79.0.0/1665,536206.79.0.0 – 206.79.255.255
206.129.0.0/1665,536206.129.0.0 – 206.129.255.255
The 25 largest of 672. The API and the database have all of them.

IPv6 prefixes

1 prefix
  • 2001:460:100::/46

Query AS3561 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS3561&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS3561, with or without a key:

curl "https://api.ipapi.is/?q=208.144.0.1"

Other networks of CenturyLink Communications, LLC

6 of 14
AS209 CenturyLink Communications, LLC26,232,064 IPv4 addressesAS22561 CenturyLink Communications, LLC1,419,008 IPv4 addressesAS2379 CenturyLink Communications, LLC689,408 IPv4 addressesAS11398 CenturyLink Communications, LLC172,288 IPv4 addressesAS17402 CenturyLink Communications, LLC68,864 IPv4 addressesAS14921 CenturyLink Communications, LLC61,952 IPv4 addresses

Largest networks in United States

AS749 United States Department of Defense (DoD)227,398,400 IPv4 addressesAS16509 Amazon.com, Inc.218,442,752 IPv4 addressesAS7018 AT&T Enterprises, LLC117,260,800 IPv4 addressesAS8075 Microsoft Corporation81,466,624 IPv4 addressesAS721 United States Department of Defense (DoD)72,988,160 IPv4 addressesAS7922 Comcast Cable Communications, LLC68,337,664 IPv4 addresses