An Autonomous System Number (ASN) is a unique number assigned to a network in global internet routing. Every provider that participates directly on the internet has its own ASN (e.g. AS15169 for Google).

What are upstreams, peers and prefixes?

Upstreams are transit providers through which an AS reaches the internet. Peers are networks with direct traffic exchange. Prefixes are the IP address ranges the AS announces via BGP.

Where does the ASN data come from?

The data comes from the official RDAP services of the RIRs (RIPE, ARIN, etc.) and from RIPEstat (prefixes and neighbour ASNs).

ASN Lookup – Networks, Upstreams and Prefixes

AS63981

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS63981

NameNTDKL-HK

OrganisationNova Technology Development (Hong Kong) Limited

Country

RIRAPNIC

Allocated15.05.2015

Abuse contactsupport@nova.net.cn

Network Overview

IPv4 Prefixes37

IPv6 Prefixes4

Upstreams (Transit)19

Downstreams (Customers)1

BGP Peers20

AS Path (BGP neighbours)

Upstreams (Transit)

AS10103HK Broadband Network Ltd.AS1299Arelion (fka. Telia Carrier)AS137409GSL Networks Pty LTD AS174Cogent Communications, LLC AS17557Pakistan Telecommunication Company Limited AS20485TransTeleCom JSC+13

AS63981NTDKL-HK

Downstreams (Customers)

AS142292NOVA TECHNOLOGY DEVELOPMENT (HONG KONG) LIMITED (SINGAPORE BRANCH)

Upstreams (Transit) (19)

AS10103HK Broadband Network Ltd.

AS1299Arelion (fka. Telia Carrier)

AS137409GSL Networks Pty LTD

AS174Cogent Communications, LLC

AS17557Pakistan Telecommunication Company Limited

AS20485TransTeleCom JSC

AS21859Zenlayer Inc

AS24115Equinix IX

AS2914NTT America, Inc.

AS3356Lumen (Level 3)

AS35280F5 Networks SARL

AS38008Aperture Science Limited

Downstreams (Customers) (1)

AS142292NOVA TECHNOLOGY DEVELOPMENT (HONG KONG) LIMITED (SINGAPORE BRANCH)

IPv4 Prefixes (37)

103.167.141.0/24

38.71.37.0/24

103.117.79.0/24

45.117.97.0/24

45.117.96.0/22

45.251.66.0/24

38.71.34.0/24

103.29.140.0/24

66.160.164.0/24

103.206.90.0/24

45.117.96.0/24

38.71.26.0/23

38.71.22.0/24

38.71.36.0/24

103.29.142.0/24

38.71.35.0/24

45.251.67.0/24

103.167.140.0/24

72.52.111.0/24

116.214.132.0/24

103.214.192.0/22

154.19.46.0/24

38.71.32.0/24

38.71.33.0/24

203.166.220.0/22

103.197.28.0/22

103.29.143.0/24

38.71.24.0/24

103.29.141.0/24

45.117.98.0/24

45.117.99.0/24

103.117.76.0/22

103.29.140.0/22

45.251.64.0/22

103.206.88.0/22

103.220.8.0/24

103.220.8.0/22

IPv6 Prefixes (4)

2001:550:5c09::/48

2401:3e0::/32

2407:6bc0::/32

2405:a480::/32

BGP Peers (20)

AS133210EN Technologies Pte Ltd

AS134823Sky Digital Co., Ltd.

AS142271EWS DS Networks Inc

AS14907Wikimedia Foundation Inc.

AS17639Converge ICT Solutions Inc.

AS1828PacketFabric / Unitas Global

AS199524Gcore S.A.

AS24482SG.GS

AS25220equada network GmbH

AS36236NetActuate, Inc

AS38001NewMedia Express Pte. Ltd.

AS45489Sri Lanka Telecom PLC

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.