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Autonomous System

AS9931 · National Telecom Public Company Limited

Overview

AS9931 is announced on the Internet: RIPE RIS route collectors currently see 629 IPv4 prefixes and 160 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 290,048 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 4 upstream neighbours (transit providers or peers) and 54 downstream neighbours (customers or networks it carries). Its most visible upstreams are National Telecom Public Company Limited (AS4651), TOT Public Company Limited (AS38040), and Planet Online Laos, Internet Service Provider in LAO PDR (AS23900). AS9931 was assigned by APNIC, and its registration country is Thailand.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 4:54 AM UTC. This page is refreshed at most every 12 hours.

Go further

Trace a route to this networkOpen in the BGP viewerWHOIS of 114.131.0.1

The trace goes to 114.131.0.1, the first address of 114.131.0.0/16. An address picked inside a prefix may not answer (nothing listens there, or the network filters probes): the trace then shows the path up to the last network that replies.

Announced prefixes

IPv4 prefixes (629 prefixes)

PrefixAddresses
61.7.192.0/1816,384
61.7.192.0/212,048
61.7.192.0/24256
61.7.195.0/24256
61.7.196.0/24256
61.7.197.0/24256
61.7.198.0/24256
61.7.199.0/24256
61.7.208.0/212,048
61.7.208.0/24256
61.7.209.0/24256
61.7.210.0/24256
61.7.212.0/23512
61.7.214.0/23512
61.7.216.0/221,024
61.7.216.0/23512
61.7.218.0/23512
61.7.221.0/24256
61.7.222.0/23512
61.7.224.0/23512
61.7.228.0/221,024
61.7.228.0/23512
61.7.230.0/23512
61.7.232.0/212,048
61.7.232.0/23512
61.7.234.0/23512
61.7.236.0/24256
61.7.237.0/24256
61.7.239.0/24256
61.7.240.0/212,048
61.7.240.0/23512
61.7.242.0/23512
61.7.244.0/24256
61.7.245.0/24256
61.7.246.0/24256
61.7.247.0/24256
61.7.248.0/212,048
61.7.254.0/23512
61.19.16.0/204,096
61.19.16.0/221,024
61.19.20.0/221,024
61.19.21.0/24256
61.19.22.0/24256
61.19.23.0/24256
61.19.24.0/221,024
61.19.24.0/23512
61.19.26.0/24256
61.19.27.0/24256
61.19.28.0/221,024
61.19.28.0/23512
61.19.30.0/23512
61.19.30.0/24256
61.19.31.0/24256
61.19.32.0/204,096
61.19.32.0/221,024
61.19.32.0/23512
61.19.34.0/23512
61.19.38.0/24256
61.19.40.0/24256
61.19.41.0/24256
61.19.42.0/23512
61.19.42.0/24256
61.19.43.0/24256
61.19.44.0/221,024
61.19.44.0/23512
61.19.46.0/24256
61.19.47.0/24256
61.19.48.0/212,048
61.19.48.0/221,024
61.19.52.0/221,024
61.19.56.0/221,024
61.19.57.0/24256
61.19.58.0/24256
61.19.59.0/24256
61.19.64.0/24256
61.19.65.0/24256
61.19.66.0/24256
61.19.67.0/24256
61.19.68.0/221,024
61.19.68.0/23512
61.19.70.0/23512
61.19.72.0/212,048
61.19.72.0/23512
61.19.74.0/24256
61.19.75.0/24256
61.19.76.0/23512
61.19.78.0/23512
61.19.80.0/204,096
61.19.80.0/24256
61.19.82.0/23512
61.19.84.0/23512
61.19.86.0/23512
61.19.88.0/24256
61.19.90.0/24256
61.19.91.0/24256
61.19.95.0/24256
61.19.96.0/198,192
61.19.96.0/221,024
61.19.98.0/24256
61.19.100.0/23512

Showing the first 100 of 629, in address order. Complete list on RIPEstat

IPv6 prefixes (160 prefixes)

Prefix
2001:c38:920::/48
2001:c38:4000::/36
2001:c38:9000::/36
2001:c38:9007::/48
2001:c38:900f::/48
2001:c38:9023::/48
2001:c38:9024::/48
2001:c38:9028::/48
2001:c38:9029::/48
2001:c38:902a::/48
2001:c38:902e::/48
2001:c38:903a::/48
2001:c38:903b::/48
2001:c38:903d::/48
2001:c38:903e::/48
2001:c38:903f::/48
2001:c38:9040::/48
2001:c38:9042::/48
2001:c38:9043::/48
2001:c38:9045::/48
2001:c38:9046::/48
2001:c38:9047::/48
2001:c38:904a::/48
2001:c38:9050::/48
2001:c38:9051::/48
2001:c38:9055::/48
2001:c38:9056::/48
2001:c38:9060::/48
2001:c38:9062::/48
2001:c38:9065::/48
2001:c38:9067::/48
2001:c38:9068::/48
2001:c38:9069::/48
2001:c38:9070::/48
2001:c38:9071::/48
2001:c38:9078::/48
2001:c38:9081::/48
2001:c38:9082::/48
2001:c38:9083::/48
2001:c38:9084::/48
2001:c38:9085::/48
2001:c38:90b0::/48
2001:c38:90c1::/48
2001:c38:90f0::/48
2001:c38:90f1::/48
2001:c38:910c::/48
2001:c38:910d::/48
2001:c38:910e::/48
2001:c38:9110::/48
2001:c38:9111::/48
2001:c38:9112::/48
2001:c38:9113::/48
2001:c38:9114::/48
2001:c38:9115::/48
2001:c38:9116::/48
2001:c38:9117::/48
2001:c38:9118::/48
2001:c38:9119::/48
2001:c38:911a::/48
2001:c38:911b::/48
2001:c38:911c::/48
2001:c38:911d::/48
2001:c38:9120::/48
2001:c38:9121::/48
2001:c38:9122::/48
2001:c38:9123::/48
2001:c38:9124::/48
2001:c38:9125::/48
2001:c38:9127::/48
2001:c38:9128::/48
2001:c38:9130::/48
2001:c38:9137::/48
2001:c38:9138::/48
2001:c38:9139::/48
2001:c38:913a::/48
2001:c38:913b::/48
2001:c38:913c::/48
2001:c38:913d::/48
2001:c38:913e::/48
2001:c38:913f::/48
2001:c38:9140::/48
2001:c38:9141::/48
2001:c38:9142::/48
2001:c38:9150::/48
2001:c38:9200::/40
2001:c38:9201::/48
2001:c38:9202::/48
2001:c38:9203::/48
2001:c38:9204::/48
2001:c38:9205::/48
2001:c38:9206::/48
2001:c38:9208::/48
2001:c38:920a::/48
2001:c38:920f::/48
2001:c38:9210::/48
2001:c38:9211::/48
2001:c38:9212::/48
2001:c38:9213::/48
2001:c38:9220::/48
2001:c38:9300::/40

Showing the first 100 of 160, in address order. Complete list on RIPEstat

Neighbours

Upstreams (transit or peers) (4)

ASNetworkVisibility
AS4651National Telecom Public Company Limited18,711
AS38040TOT Public Company Limited477
AS23900Planet Online Laos, Internet Service Provider in LAO PDR79
AS24187KIRZ Service Provider54

Downstreams (customers) (54)

ASNetworkVisibility
AS23900Planet Online Laos, Internet Service Provider in LAO PDR931
AS135566National Telecom Public Company Limited923
AS133947Metropolitan Electricity Authority711
AS136035Department of Tourism575
AS134695Mass Rapid Transit Authority of Thailand573
AS45575Rajamangala University of Technology Srivijaya555
AS6397288/28 Moo 4 Tiwanont Road Nonta-Buri Province 11000546
AS154803Office of the Permanent Secretary for Defence511
AS137850Mae Fah Luang University458
AS9335National Telecom Public Company Limited433
AS9464-428
AS140699-416
AS45806-406
AS18197-391
AS137058-385
AS141692-384
AS45533-369
AS141214-368
AS24060-366
AS9649-362
AS134811-362
AS38293-359
AS134565-359
AS147300-359
AS153746-321
AS38296-300
AS18252-296
AS38265-295
AS140618-294
AS132133-290

The 30 most visible of 54.

1 more neighbour appears on both sides of this network depending on the path, so they are counted in neither list.

Visibility is RIPEstat's count of how often the route collectors observed the link. It compares neighbours with each other; it is not a traffic volume.

How to read this page

An Autonomous System (AS) is a network run under one routing policy: an internet provider, a cloud, a content network, a university. Each one has a number, its ASN, assigned by a regional registry (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), and uses BGP, the protocol networks use to tell each other where addresses are, to announce the blocks of addresses it delivers to.

A prefix such as 203.0.113.0/24 is a block of addresses: the number after the slash says how many bits are fixed, so a /24 holds 256 IPv4 addresses and a /16 holds 65,536. Networks often announce a large block and smaller pieces of it at the same time, which is why the address total counts each address once.

Neighbours come from the paths themselves. A network that appears just before this one in a path, on the collector's side, is an upstream: a transit provider or a peer. One that appears just after it is a downstream, usually a customer. Peering at an internet exchange also shows up as an upstream, so the upstream list is not a list of paid transit.

The data comes from RIPEstat, run by the RIPE NCC, which gathers the routing tables of hundreds of networks through its RIS route collectors. This page reads it when it is visited and keeps it for 12 hours at most; the BGP viewer reads it live.

Frequently asked questions

How do I find the ASN of an IP address?
Type the address in the BGP viewer: it shows the prefix that covers it, the AS that originates that prefix and the paths seen towards it. A traceroute also names the network of each hop, so you can see every AS a connection crosses.
Why does one company have several ASNs?
Large operators split their network by region, by activity or by history: a cloud may use one number for its backbone and another for a region, and every acquisition brings its own numbers. Each number has its own page, with its own prefixes and neighbours.
Why do prefix counts differ from one site to another?
Each source sees the routing table from different collectors, at a different time, and counts differently: some include prefixes withdrawn in recent weeks, some merge a block and its pieces. This page counts the prefixes RIPE RIS collectors see originated by the network at the end of the latest two-week window, and counts each IPv4 address once.
Is this the list of IP ranges of a cloud provider?
It is what its networks announce, which is what the Internet routes to them. Many providers also publish an official list of ranges per service and region; that list is the reference for firewall rules, because a range can be announced before it is used, or announced by another of their AS numbers.