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

AS4651

ASN

APNIC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS4651

NameNTPCL-AS-AP

OrganisationNational Telecom Public Company Limited

Country

RIRAPNIC

Allocated20.11.2025

Abuse contactpitoon.p@ntplc.co.th

Network Overview

IPv4 Prefixes37

IPv6 Prefixes1

Upstreams (Transit)112

Downstreams (Customers)38

BGP Peers135

AS Path (BGP neighbours)

Upstreams (Transit)

AS1103SURF B.V.AS12389Rostelecom PJSC AS12552GlobalConnect (IP-Only)AS12577MMC GmbH AS1267WIND TRE S.P.A.AS1273Vodafone Group PLC+106

AS4651NTPCL-AS-AP

Downstreams (Customers)

AS131090National Telecom Public Company Limited AS131293TOT Public Company Limited AS132300NIPA TECHNOLOGY CO., LTD AS133524Global Technology Co., Ltd.AS135063POP NIX COMPANY LIMITED AS135589Internet Maekhong Network Company Limited+32

Upstreams (Transit) (100)

AS1103SURF B.V.

AS12389Rostelecom PJSC

AS12552GlobalConnect (IP-Only)

AS12577MMC GmbH

AS1267WIND TRE S.P.A.

AS1273Vodafone Group PLC

AS12779IT.Gate S.p.A.

AS1299Arelion (fka. Telia Carrier)

AS13030Init7 (Switzerland) Ltd.

AS13194UAB "Bite Lietuva"

AS137409GSL Networks Pty LTD

AS138997Eons Data Communications Limited

Downstreams (Customers) (38)

AS131090National Telecom Public Company Limited

AS131293TOT Public Company Limited

AS132300NIPA TECHNOLOGY CO., LTD

AS133524Global Technology Co., Ltd.

AS135063POP NIX COMPANY LIMITED

AS135589Internet Maekhong Network Company Limited

AS136523COLODEE DIGITAL NETWORK CO.,LTD.

AS138616Sanuk Systems (Thailand) Co., Ltd

AS139014Next Route Company Limited

AS139341WeChat/QQ CDN

AS139591National Telecom Public Company Limited

AS139620MYANMAR TELECOMMUNICATION NETWORK PUBLIC COMPANY LIMITED

IPv4 Prefixes (37)

61.19.1.0/24

122.155.226.0/24

122.155.232.0/24

163.171.108.0/24

185.27.231.0/24

61.19.2.0/24

122.155.227.0/24

61.19.0.0/24

122.155.225.0/24

148.253.59.0/24

122.155.230.0/24

122.155.244.0/24

93.188.129.0/24

202.47.253.0/24

61.19.9.0/24

122.155.228.0/24

163.171.121.0/24

122.155.235.0/24

93.188.128.0/24

61.19.14.0/24

163.171.105.0/24

61.19.7.0/24

66.114.56.0/24

122.155.242.0/24

174.35.3.0/24

163.171.106.0/24

122.155.238.0/24

122.155.243.0/24

174.35.53.0/24

122.155.240.0/24

122.155.236.0/24

61.19.4.0/24

163.171.120.0/24

122.155.237.0/24

122.155.229.0/24

122.155.224.0/24

122.155.244.0/22

IPv6 Prefixes (1)

2001:c38:5000::/48

BGP Peers (135)

AS1140Stichting Internet Domeinregistratie Nederland

AS12637Seeweb s.r.l.

AS12859BIT BV

AS12969Ljósleiðarinn ehf (Sýn)

AS13237euNetworks GmbH

AS133210EN Technologies Pte Ltd

AS134823Sky Digital Co., Ltd.

AS142271EWS DS Networks Inc

AS14630Invesco Group Services, Inc.

AS14907Wikimedia Foundation Inc.

AS15547netplus.ch SA

AS15605Connesi S.p.A.