ASN Lookup – Networks, Upstreams and Prefixes

AS3561

ASN

ARIN

RIR

632

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS3561

NameCENTURYLINK-LEGACY-SAVVIS

OrganisationCenturyLink Communications, LLC

Country –

RIRARIN

Allocated07.10.1998

Network Overview

IPv4 Prefixes632

IPv6 Prefixes2

Upstreams IPv44

BGP Peers IPv445

Upstreams (Transit Providers)

IPv4

AS209 CENTURYLINK-US-LEGACY-QWEST

AS3356 LEVEL3

AS3910 CENTURYLINK-EUROPE-LEGACY-QWEST

AS7991 CENTURYLINK-LEGACY-SAVVIS-ASIA-TRANSIT

IPv4 Prefixes (632 total, showing 20)

64.29.72.0/22

204.71.0.0/24

209.73.140.0/24

45.38.247.0/24

216.144.64.0/20

69.46.76.0/24

64.79.160.0/20

109.166.40.0/21

206.25.0.0/16

212.124.224.0/19

64.68.64.0/19

50.118.215.0/24

205.164.28.0/24

208.175.202.0/24

64.58.64.0/19

206.100.0.0/21

216.219.64.0/20

208.134.0.0/15

209.1.120.0/21

216.33.96.0/19

IPv6 Prefixes (2 total)

2001:460:100::/46

2001:460:78::/46

BGP Peers IPv4 (45 total, showing 20)

AS10959

AS13458

AS13494

AS14524

AS14688

AS19701

AS201493

AS20391

AS21622

AS22064

AS22283

AS23147

AS26158

AS29457

AS32988

AS33717

AS36539

AS393697

AS393738

AS393888

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What is an ASN?

An Autonomous System Number (ASN) is a unique number assigned to a network on the internet. Upstreams are the transit providers through which the AS reaches the internet. Peers are networks with which direct traffic exchange takes place. Prefixes are the IP address ranges that the AS announces to the internet. Data via RIPE NCC RDAP and RIPEstat API.