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ASN Lookup Tool
AS3561 CENTURYLINK-LEGACY-SAVVIS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS3561
Organisation
CenturyLink Communications, LLC
Name
CENTURYLINK-LEGACY-SAVVIS
Total IPv4 Addresses
7675100
Total IPv4 Prefixes
2099
Total IPv6 Prefixes
220
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#63 out of 76,525
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1998-10-07
Registration Last Change
2018-11-15
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
AS3356
US flagLevel 3 Parent, LLC
AS209
US flagCenturyLink Communications, LLC
AS6461
US flagZayo Bandwidth
AS7991
US flagCenturyLink Communications, LLC
AS3908
US flagCenturyLink Communications, LLC
Transit To

The list of active Autonomous Systems (ASs) which receive traffic from that ASN.

 

ASN
Organisation
AS3356
US flagLevel 3 Parent, LLC
AS209
US flagCenturyLink Communications, LLC
AS19901
US flagBrightspeed
AS2386
US flagAT&T Data Communications Services
AS203
US flagLevel 3 Parent, LLC
Showing 5 of 125
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

Prefix103.11.68.0/22
Range From103.11.68.0
Range To103.11.71.255
Prefix104.164.158.0/24
Range From104.164.158.0
Range To104.164.158.255
Prefix104.164.39.0/24
Range From104.164.39.0
Range To104.164.39.255
Prefix104.165.1.0/24
Range From104.165.1.0
Range To104.165.1.255
Prefix104.165.103.0/24
Range From104.165.103.0
Range To104.165.103.255
Showing 5 of 2100
IPv6 Active Prefixes
Prefix2001:460::/45
Range From2001:460::
Range To2001:460:7:ffff:ffff:ffff:ffff:ffff
Prefix2001:460:10::/52
Range From2001:460:10::
Range To2001:460:10:fff:ffff:ffff:ffff:ffff
Prefix2001:460:10:1000::/52
Range From2001:460:10:1000::
Range To2001:460:10:1fff:ffff:ffff:ffff:ffff
Prefix2001:460:10:2000::/51
Range From2001:460:10:2000::
Range To2001:460:10:3fff:ffff:ffff:ffff:ffff
Prefix2001:460:10:4000::/50
Range From2001:460:10:4000::
Range To2001:460:10:7fff:ffff:ffff:ffff:ffff
Showing 5 of 220
Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.