Autonomous System

AS4651 National Telecom Public Company Limited

ISPActiveThailandAPNIC

AS4651 (NTPCL-AS-AP) is an ISP network operated by National Telecom Public Company Limited in Thailand, registered with APNIC. It has 37 IPv4 prefixes with 10,240 addresses and 1 IPv6 prefix, which makes it the 9,959th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses10,240in 37 prefixes
IPv6 prefixes1≈ 1.2 × 10²⁴ addresses
Size rank#9,959of 82,200 active ASNs
Abuser scoreLow0.07% of its addresses flagged · method

Details

OrganizationNational Telecom Public Company Limited
AS nameNTPCL-AS-AP
Websitentplc.co.th
Country Thailand (TH)
Network typeISP
RegistryAPNIC
Abuse contactpitoon.p@ntplc.co.th
Registered—
Last updated2025-11-20

IPv4 prefixes

37 prefixes · 10,240 addresses
NetworkAddressesFirst – last address
122.155.244.0/221,024122.155.244.0 – 122.155.247.255
61.19.0.0/2425661.19.0.0 – 61.19.0.255
61.19.1.0/2425661.19.1.0 – 61.19.1.255
61.19.2.0/2425661.19.2.0 – 61.19.2.255
61.19.4.0/2425661.19.4.0 – 61.19.4.255
61.19.7.0/2425661.19.7.0 – 61.19.7.255
61.19.9.0/2425661.19.9.0 – 61.19.9.255
61.19.14.0/2425661.19.14.0 – 61.19.14.255
66.114.56.0/2425666.114.56.0 – 66.114.56.255
93.188.128.0/2425693.188.128.0 – 93.188.128.255
93.188.129.0/2425693.188.129.0 – 93.188.129.255
122.155.224.0/24256122.155.224.0 – 122.155.224.255
122.155.225.0/24256122.155.225.0 – 122.155.225.255
122.155.226.0/24256122.155.226.0 – 122.155.226.255
122.155.227.0/24256122.155.227.0 – 122.155.227.255
122.155.229.0/24256122.155.229.0 – 122.155.229.255
122.155.230.0/24256122.155.230.0 – 122.155.230.255
122.155.232.0/24256122.155.232.0 – 122.155.232.255
122.155.235.0/24256122.155.235.0 – 122.155.235.255
122.155.236.0/24256122.155.236.0 – 122.155.236.255
122.155.237.0/24256122.155.237.0 – 122.155.237.255
122.155.238.0/24256122.155.238.0 – 122.155.238.255
122.155.239.0/24256122.155.239.0 – 122.155.239.255
122.155.240.0/24256122.155.240.0 – 122.155.240.255
122.155.242.0/24256122.155.242.0 – 122.155.242.255
The 25 largest of 37. The API and the database have all of them.

IPv6 prefixes

1 prefix
  • 2001:c38:5000::/48

Query AS4651 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS4651&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS4651, with or without a key:

curl "https://api.ipapi.is/?q=122.155.244.1"

Other networks of National Telecom Public Company Limited

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Largest networks in Thailand

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