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AS4651

CAT-IIG, CAT IP Transit

Thailand (TH)

ASN Information

AS NumberAS4651
AS NameNTPCL-AS-AP
OrganizationNational Telecom Public Company Limited
Also known asCAT-IIG, CAT IP Transit
CountryThailand (TH)
RegistryAPNIC
ASN TypeNSP
Last Seen
Announcement Count64
IPv4 Prefix Count37
IPv6 Prefix Count27
RPKI StatusValid ×29NotFound ×8Unknown (could not be determined) ×13
IRR RecordsView IRR route objects
Websitehttps://www.ntplc.co.th/ ↗

AS Path to AS4651

  1. 6939HURRICANE - Hurricane Electric LLC
  2. 4651Origin

Most common path, seen 45× in route collector data, latest at a collector in São Paulo (2026-10-20 09:52:38 UTC). Prepends collapsed.

Route Collectors (Visibility)

Sydney: 14 peer session(s)São Paulo: 20 peer session(s)Johannesburg: 23 peer session(s)Amsterdam: 26 peer session(s)Singapore: 27 peer session(s)London: 35 peer session(s)Eugene, OR: 57 peer session(s)
High (10+ peers)Medium (3–9)Low (1–2)

Approximate route collector locations, coloured by peer sessions carrying this AS's routes.

Announced Prefixes (64)

View All →
PrefixFamilyRPKILast Seen
61.19.0.0/24IPv4ValidNot looked up yet
61.19.1.0/24IPv4ValidNot looked up yet
61.19.2.0/24IPv4ValidNot looked up yet
61.19.4.0/24IPv4ValidNot looked up yet
61.19.7.0/24IPv4ValidNot looked up yet
61.19.9.0/24IPv4ValidNot looked up yet
61.19.14.0/24IPv4ValidNot looked up yet
66.114.56.0/24IPv4ValidNot looked up yet

Peers (279)

View All →
ASNameRelationshipPathsLast Seen
AS6939HURRICANE - Hurricane Electric LLCUpstream (inferred)360
AS1273CW - IDDQD-ASUpstream (inferred)33
AS3491PCCWG-APAC-HK - PCCW Global (HK) Ltd.Upstream (inferred)29
AS6453AS6453 - TATA COMMUNICATIONS (AMERICA) INCUpstream (inferred)29
AS35280F5 F5 Networks SARLUpstream (inferred)25
AS37468Angola Cables - Angola CablesUpstream (inferred)24
AS1299TWELVE99 Arelion Sweden ABUpstream (inferred)22
AS30844LIQUID-AS Liquid Telecommunications LtdUpstream (inferred)20

Neighbours seen next to AS4651 in public AS paths. These are not confirmed BGP sessions; peer IP addresses and locations are not published by these sources.

Public Peering Exchange Points (14)

IX Updates →
ExchangeLocationIPv4IPv6SpeedRS peerUpdated
AMS-IXAmsterdam, NL80.249.210.152001:7f8:1::a500:4651:110GYes
Any2WestLos Angeles and Silicon Valley, US206.72.210.2472001:504:13::24710GYes
BBIX Hong KongHong Kong, HK103.203.158.212403:c780:b800:bb00::4651:1100GYes
BBIX SingaporeSingapore, SG103.231.152.602001:df5:b800:bb00::4651:220GYes
BBIX TokyoTokyo, JP101.203.89.512001:de8:c::4651:120GYes
BBIX US-WestWest Coast, US101.203.74.442403:c780:7200:b074::4651:110GYes
DE-CIX FrankfurtFrankfurt, DE80.81.193.2382001:7f8::122b:0:130GYes
Equinix Hong KongHong Kong, HK36.255.57.382001:de8:7::4651:1100GYes
Equinix SingaporeSingapore, SG27.111.228.882001:de8:4::4651:1200GYes
HKIXHong Kong, HK123.255.91.1322001:7fa:0:1::ca28:a18420GYes
JPNAP TokyoTokyo, JP210.173.176.1282001:7fa:7:1::4651:110GYes
LINX LON1London, GB195.66.226.992001:7f8:4::122b:110GYes
NL-ixAmsterdam, Rotterdam, Brussels, Luxembourg, Frankfurt, Düsseldorf, Berlin, Dublin, London, Copenhagen, Paris, Marseille, NL193.239.117.1592001:7f8:13::a500:4651:110GYes
THAILAND IX (TH-IX)Bangkok, TH61.19.60.1992001:c38:8000::4651:110GNo

IX ports registered by AS4651 (self-reported by the network).

Interconnection Facilities (12)

FacilityCityCountry
Telehouse - London (Docklands North)LondonUnited Kingdom
MEGA-i (iAdvantage Hong Kong)Hong KongHong Kong SAR China
Equinix SG1 - SingaporeSingaporeSingapore
Equinix SG3 - SingaporeSingaporeSingapore
ETIX Bangkok #1BangkokThailand
NT Bangrak TowerBangkokThailand
STT Bangkok 1BangkokThailand
STT Bangkok 3BangkokThailand
Telehouse – BangkokBangkokThailand
NT Nonthaburi Telecommunication CenterNonthaburiThailand
Arise IDC - Bangkok North 1, ThailandPakkretThailand
CoreSite - Los Angeles (LA1) One WilshireLos AngelesUnited States

Data centres where AS4651 says it can interconnect (self-reported).

IRR AS-SET and Peering Policy

IRR AS-SETAS-CAT-IIG
Member of AS-SETsSee IRR page
Peering policyOpen
Multiple locationsPreferred
Ratio requirementNo
ContractNot Required
Traffic1-5Tbps
Traffic ratioMostly Inbound
Geographic scopeAsia Pacific
Max prefixes (IPv4 / IPv6)50000 / 5000
Unicast / IPv6 / MulticastYes / Yes / No
Looking glassNot available
Route serverNot available

Contact Information (3)

RoleNameEmailPhone
NOCNT(CAT)-IIG NOCnoc@cat.net.th+6621042372
TechnicalNT(CAT)-IIG Peering Teampeering@cat.net.th—
PolicyNT(CAT)-IIG Peering Teampeering@cat.net.th—

Only contacts the network has chosen to publish are shown.

Upstreams (159)

View all →
ASNameRelationshipPathsLast Seen
AS6939HURRICANE - Hurricane Electric LLCUpstream (inferred)360
AS1273CW - IDDQD-ASUpstream (inferred)33
AS3491PCCWG-APAC-HK - PCCW Global (HK) Ltd.Upstream (inferred)29
AS6453AS6453 - TATA COMMUNICATIONS (AMERICA) INCUpstream (inferred)29
AS35280F5 F5 Networks SARLUpstream (inferred)25
AS37468Angola Cables - Angola CablesUpstream (inferred)24
AS1299TWELVE99 Arelion Sweden ABUpstream (inferred)22
AS30844LIQUID-AS Liquid Telecommunications LtdUpstream (inferred)20
AS49544i3Dnet i3D.net B.VUpstream (inferred)20
AS58511ANYCAST-GLOBAL-BACKBONE - Anycast Global BackboneUpstream (inferred)20
AS2914NTT-DATA-2914 - NTT America, Inc.Upstream (inferred)16
AS4637ASN-TELSTRA-GLOBAL - Telstra GlobalUpstream (inferred)15

Downstreams (39)

View all →
ASNameRelationshipPathsLast Seen
AS4618—Downstream (inferred)Inferred—
AS4621—Downstream (inferred)Inferred—
AS4765—Downstream (inferred)Inferred—
AS9335—Downstream (inferred)Inferred—
AS9835—Downstream (inferred)Inferred—
AS9931—Downstream (inferred)Inferred—
AS14789—Downstream (inferred)Inferred—
AS18409—Downstream (inferred)Inferred—
AS20940—Downstream (inferred)Inferred—
AS23884—Downstream (inferred)Inferred—
AS23969—Downstream (inferred)Inferred—
AS24187—Downstream (inferred)Inferred—

Registry and network details

Registered holderNTPCL-AS-AP - National Telecom Public Company Limited
RegisteredYes
Peering policyOpen
IRR AS-setAS-CAT-IIG
Registry record last modified
MaintainersAPNIC-HM
Internet exchanges14
Facilities12
Network profile updated

Data updated . See limitations.