Autonomous system
AS9931 CAT-AP The Communication Authoity of Thailand, CAT
Residential APNIC
Summary
CAT Telecom / National Telecom (NT)
isp residential eyeball fiber backbone
The former CAT Telecom network, now part of Thailand's state-owned National
Telecom (NT) after the 2021 TOT/CAT merger, carrying internet and gateway
services.
What it's used for
- Fixed broadband and internet access for Thai consumers and businesses, plus international gateway capacity.
Notable
- An "eyeball"-facing network: addresses here include consumer home connections, not just servers.
- CAT Telecom was Thailand's international/data carrier; its services now sit inside National Telecom alongside the former TOT network.
Interesting
- CAT and TOT merged into NT in 2021; see the former TOT side at [AS9737](https://asn.ipinfo.app/AS9737).
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Address space
Summary
| Country | Name | Prefixes |
|---|---|---|
| TH | Thailand | 432 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS9931- Registry name
- NTPCL-AS-AP
- Registrant
- National Telecom Public Company Limited
- Abuse contact
- pitoon.p@ntplc.co.th
- Registered
- 2025-11-19
- Last changed
- 2025-11-20
- Status
- active
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
1 IC3 indicators addresses in this network appear in FBI IC3 cybersecurity advisories.
| Prefix | Advisory | Published |
|---|---|---|
61.19.148.66 | Countering Chinese State-Sponsored Actors Compromise of Networks Worldwide to Feed Global Espionage System | 2025-08-27 |
Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere