ASN Lookup – Networks, Upstreams and Prefixes

AS1742

ASN

ARIN

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS1742

NameHARVARD-UNIV

OrganisationHarvard University

Country –

RIRARIN

Allocated19.02.1992

Abuse contactabuse@harvard.edu

Network Overview

IPv4 Prefixes13

IPv6 Prefixes4

Upstreams IPv45

BGP Peers IPv42

Upstreams (Transit Providers)

IPv4

AS10578 GIGAPOP-NE

AS11164 INTERNET2-I2PX

AS11537 INTERNET2-RESEARCH-EDU

AS174 COGENT-174

AS3356 LEVEL3

IPv4 Prefixes (13 total)

199.94.60.0/22

140.247.0.0/16

128.103.0.0/16

140.247.174.0/24

65.112.0.0/20

192.131.102.0/24

192.54.223.0/24

131.142.0.0/16

140.247.236.0/24

192.5.66.0/24

67.134.204.0/22

140.247.152.0/24

140.247.111.0/24

IPv6 Prefixes (4 total)

2602:fca9::/36

2607:fb60:2404::/46

2620:32:8000::/48

2607:fb60::/32

BGP Peers IPv4 (2 total)

AS13315

AS40127

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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.