Free network tools
AS WHOIS
Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
Network Report (All-in-one) BGP Looking Glass BGP Security Check RPKI Validator BGP Hijack & Leak Monitor ASN Intelligence Internet Outages & Anomalies Country Internet Report Domain Insights IP WHOIS AS WHOIS
AS4651
NTPCL-AS-AP - National Telecom Public Company Limited Announcing routesAS nameNTPCL-AS-AP
OrganisationNational Telecom Public Company Limited
CountryTH
Registry (RIR)APNIC
HandleAS4651
RangeAS4651
Registered20 Nov 2025
Last changed20 Nov 2025
Abuse contact[email protected]
37IPv4 prefixes
1IPv6 prefixes
71Upstreams
39Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS6939 | HURRICANE - Hurricane Electric LLC | 21236 |
| AS3491 | PCCWG-APAC-HK - PCCW Global (HK) Ltd. | 1516 |
| AS174 | COGENT-174 - Cogent Communications, LLC | 1278 |
| AS1299 | TWELVE99 Arelion Sweden AB | 1044 |
| AS34549 | MEER-AS meerfarbig GmbH & Co. KG | 817 |
| AS6453 | AS6453 - TATA COMMUNICATIONS (AMERICA) INC | 718 |
| AS2914 | NTT-DATA-2914 - NTT America, Inc. | 634 |
| AS6057 | AS6057 - Administracion Nacional de Telecomunicaciones | 459 |
| AS2497 | IIJ - Internet Initiative Japan Inc. | 363 |
| AS1273 | CW - IDDQD-AS | 361 |
| AS4766 | KIXS-AS-KR-KR - Korea Telecom | 351 |
| AS8218 | NEO-ASN Zayo Infrastructure France SA | 343 |
| AS25091 | IP-Max IP-Max SA | 338 |
| AS12779 | ITGATE IT.Gate S.p.A. | 324 |
| AS4637 | ASN-TELSTRA-GLOBAL - Telstra Global | 321 |
Downstreams
| AS | Network name | Visibility |
|---|---|---|
| AS4621 | UNINET-AS-AP - UNINET-TH | 11372 |
| AS9931 | NTPCL-AS-AP - National Telecom Public Company Limited | 10239 |
| AS4618 | INET-TH-AS - Internet Thailand Company Limited | 3814 |
| AS45558 | MPT-MM-AS-AP - MYANMA POSTS AND TELECOMMUNICATIONS | 3030 |
| AS23969 | TOT-NET - TOT Public Company Limited | 2291 |
| AS23884 | PROENNET-AS - Proen Corp Public Company Limited. | 1952 |
| AS131293 | TOT-LLI-AS-AP - TOT Public Company Limited | 1850 |
| AS4765 | PACIFICINTERNET-AS-AP - Pacific Internet Pte Ltd | 1020 |
| AS38794 | UIH-BBB-AS-AP - UIH | 870 |
| AS139620 | MTNPCL-AS-AP - MYANMAR TELECOMMUNICATION NETWORK PUBLIC COMPANY LIMITED | 703 |
| AS9335 | NTPCL-AS-AP - National Telecom Public Company Limited | 616 |
| AS135063 | POPNIXCO-AS-AP - POP NIX COMPANY LIMITED | 563 |
| AS38450 | eGov-AS-TH - Ministry of Infomation Communication Technology | 520 |
| AS56067 | METRABYTE-TH - 453 Ladplacout Jorakhaebua | 498 |
| AS135589 | IMNCL-AS-AP - Internet Maekhong Network Company Limited | 496 |
IPv4 prefixes (37)
122.155.230.0/24122.155.244.0/22122.155.225.0/24122.155.240.0/2461.19.0.0/24163.171.121.0/24174.35.3.0/24122.155.244.0/24202.47.253.0/24163.171.106.0/2466.114.56.0/24122.155.232.0/24148.253.59.0/24122.155.224.0/24122.155.243.0/24122.155.237.0/24122.155.239.0/2493.188.128.0/24185.27.231.0/2461.19.7.0/24163.171.120.0/2461.19.14.0/24122.155.227.0/24174.35.53.0/24122.155.236.0/24122.155.238.0/24163.171.105.0/2461.19.1.0/24122.155.226.0/24122.155.242.0/24163.171.108.0/2461.19.4.0/24122.155.229.0/2461.19.9.0/2461.19.2.0/2493.188.129.0/24122.155.235.0/24
IPv6 prefixes (1)
RPKI-validate all prefixes of AS4651
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| abuse | IRT-NTPCL-TH | IRT-NTPCL-TH | [email protected], [email protected] | 99 Chaengwattana Road, Thung Song Hong Subdistrict, Luk Si, Luksi Bangkok 10210 |
| administrative, technical | National Telecom Public Company Limited administrator | NTPC2-AP | [email protected], +662-104-4300 | 99 Chaengwattana Road, Thung Song Hong Subdistrict, Luk Si, Luksi Bangkok 10210 |
| registrant | National Telecom Public Company Limited | ORG-NTPC1-AP | [email protected], +662-104-4300 | 99 Chaengwattana Road, Thung Song Hong Subdistrict, Luk Si |
Raw registry response
{
"rdapConformance": [
"history_version_0",
"nro_rdap_profile_0",
"nro_rdap_profile_asn_hierarchical_0",
"cidr0",
"rdap_level_0"
],
"notices": [
{
"title": "Source",
"description": [
"Objects returned came from source",
"APNIC"
]
},
{
"title": "Terms and Conditions",
"description": [
"This is the APNIC WHOIS Database query service. The objects are in RDAP format."
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/4651",
"rel": "terms-of-service",
"href": "http://www.apnic.net/db/dbcopyright.html",
"type": "text/html"
}
]
},
{
"title": "Whois Inaccuracy Reporting",
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/4651",
"rel": "inaccuracy-report",
"href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
"type": "text/html"
}
]
}
],
"country": "TH",
"name": "NTPCL-AS-AP",
"status": [
"active"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2025-11-19T23:59:33Z"
},
{
"eventAction": "last changed",
"eventDate": "2025-11-20T00:05:00Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/4651",
"rel": "self",
"href": "https://rdap.apnic.net/autnum/4651",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"National Telecom Public Company Limited"
],
"title": "description"
}
],
"entities": [
{
"roles": [
"abuse"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2025-11-11T23:31:27Z"
},
{
"eventAction": "last changed",
"eventDate": "2026-09-01T03:56:13Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/4651",
"rel": "self",
"href": "https://rdap.apnic.net/entity/IRT-NTPCL-TH",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"[email protected] was validated on 2026-05-05"
],
"title": "remarks"
}
],
"handle": "IRT-NTPCL-TH",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"IRT-NTPCL-TH"
],
[
"kind",
[],
"text",
"group"
],
[
"adr",
{
"label": "99 Chaengwattana Road, Thung Song Hong Subdistrict, Luk Si, Luksi Bangkok 10210"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
{
"pref": "1"
},
"text",
"[email protected]"
]
]
]
},
{
"roles": [
"administrative",
"technical"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2025-11-11T23:31:25Z"
},
{
"eventAction": "last changed",
"eventDate": "2025-11-11T23:31:26Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/4651",
"rel": "self",
"href": "https://rdap.apnic.net/entity/NTPC2-AP",
"type": "application/rdap+json"
}
],
"handle": "NTPC2-AP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"National Telecom Public Company Limited administrator"
],
[
"kind",
[],
"text",
"group"
],
[
"adr",
{
"label": "99 Chaengwattana Road, Thung Song Hong Subdistrict, Luk Si, Luksi Bangkok 10210"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+662-104-4300"
],
[
"email",
[],
"text",
"[email protected]"
]
]
]
},
{
"roles": [
"registrant"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2025-10-12T13:37:15Z"
},
{
"eventAction": "last changed",
"eventDate": "2025-10-12T13:37:15Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/4651",
"rel": "self",
"href": "https://rdap.apnic.net/entity/ORG-NTPC1-AP",
"type": "application/rdap+json"
}
],
"handle": "ORG-NTPC1-AP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"National Telecom Public Company Limited"
],
[
"kind",
[],
"text",
"org"
],
[
"adr",
{
"label": "99 Chaengwattana Road\nThung Song Hong Subdistrict\nLuk Si"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+662-104-4300"
],
[
"email",
[],
"text",
"[email protected]"
]
]
]
}
],
"handle": "AS4651",
"startAutnum": 4651,
"endAutnum": 4651,
"objectClassName": "autnum",
"port43": "whois.apnic.net"
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.
