ASN Lookup – Networks, Upstreams and Prefixes

AS24971

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS24971

NameMASTER-AS

OrganisationMASTER-MNT

Country –

RIRRIPE NCC

Allocated11.06.2002

Abuse contactabuse@master.cz

Network Overview

IPv4 Prefixes33

IPv6 Prefixes13

Upstreams IPv410

BGP Peers IPv424

Upstreams (Transit Providers)

IPv4

AS1299 TWELVE99

AS13194 BITE

AS1764 NEXTLAYER-AS

AS197451 VUTBR-AS

AS21320 GEANT_IAS_VRF

AS263444 AS263444

AS33891 CORE-BACKBONE

AS39120 CONVERGENZE-AS

AS41327 FIBERTELECOM-AS

AS4455 BSO

IPv4 Prefixes (33 total, showing 20)

85.118.128.0/21

185.8.164.0/23

188.213.234.0/23

83.223.52.0/24

37.140.220.0/24

77.93.192.0/19

185.8.166.0/23

185.32.160.0/22

149.62.144.0/21

195.140.252.0/22

185.25.184.0/22

5.180.200.0/22

91.216.179.0/24

193.169.160.0/23

81.31.32.0/20

89.185.224.0/19

194.145.180.0/22

185.239.216.0/22

80.79.16.0/20

91.214.192.0/22

IPv6 Prefixes (13 total, showing 10)

2a03:3b40::/40

2a00:8220::/32

2a03:3b40:100::/40

2a0c:6380::/29

2a01:430::/32

2a0b:3240::/32

2001:67c:68::/48

2a04:16c0:200::/48

2a00:a5a0::/32

2a03:3b40:200::/39

BGP Peers IPv4 (24 total, showing 20)

AS202857

AS204957

AS207167

AS21045

AS211085

AS48921

AS51134

AS64481

AS198150

AS212483

AS24482

AS28917

AS29504

AS3212

AS35369

AS36236

AS37721

AS40994

AS47692

AS49544

My IP ASN Lookup IP Lookup WHOIS DNS Lookup

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.