ASN Lookup – Networks, Upstreams and Prefixes

AS81

ASN

ARIN

RIR

140

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS81

NameNCREN

OrganisationMCNC

Country –

RIRARIN

Allocated07.08.1986

Network Overview

IPv4 Prefixes140

IPv6 Prefixes4

Upstreams IPv47

BGP Peers IPv438

Upstreams (Transit Providers)

IPv4

AS11164 INTERNET2-I2PX

AS11426 TWC-11426-CAROLINAS

AS11537 INTERNET2-RESEARCH-EDU

AS174 COGENT-174

AS3356 LEVEL3

AS6461 ZAYO-6461

AS7018 ATT-INTERNET4

IPv4 Prefixes (140 total, showing 20)

152.38.192.0/20

152.46.37.0/24

152.46.38.0/24

204.84.0.0/15

152.38.64.0/19

152.45.11.0/24

204.84.80.0/20

152.30.92.0/22

152.46.26.0/24

152.42.64.0/18

152.21.0.0/16

152.26.211.0/24

152.38.208.0/20

204.84.112.0/21

152.46.28.0/24

152.46.6.0/24

152.22.80.0/21

152.28.1.0/24

152.22.32.0/21

152.45.8.0/24

IPv6 Prefixes (4 total)

2600:2700::/28

2602:f6b8::/40

2610:28::/32

2602:f64d::/40

BGP Peers IPv4 (38 total, showing 20)

AS10952

AS11442

AS13371

AS13862

AS18538

AS19161

AS19413

AS19718

AS20197

AS22862

AS26741

AS32417

AS32711

AS33401

AS36850

AS393824

AS393875

AS394165

AS394407

AS395465

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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.