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 645 IPv4 prefixes with 7,441,408 addresses and 1 IPv6 prefix, which makes it the 88th largest of 82,141 active autonomous systems by IPv4 space.

IPv4 addresses7,441,408in 645 prefixes
IPv6 prefixes1≈ 4.8 × 10²⁴ addresses
Size rank#88of 82,141 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

645 prefixes · 7,441,408 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 645. 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, LLC26,233,344 IPv4 addressesAS22561 CenturyLink Communications, LLC1,425,408 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

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