AS24490
Trans-Eurasia Information Network (TEIN2) - SG
Registration
Announced Prefixes
This AS is not currently announcing any IPv4 or IPv6 prefixes in the global BGP table (as seen by the RIPE RIS route collectors).
BGP Neighbours
17 unique neighbours · 8 upstream/peer · 16 downstream · 1 collector-only. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams). Networks seen to the left of this AS only when they peer directly with a RIPE RIS route collector, so the adjacency may be an artefact of that peering; many of them also appear on the downstream side. Upstream & peer side (8)
AS Name AS paths IPv4 sightings IPv6 sightings AS20965 GEANT GEANT Vereniging 519 3,234 581 AS9885 NKN-INTERNET-GW - NKN INTERNET GATEWAY NETWORK 146 398 0 AS24287 TEIN2-JP - National Institute of Informatics 83 175 137 AS23855 SINGAREN-GIX-AS-AP - Singapore Advanced Research and Education Network 78 135 200 AS7660 APAN-JP - Asia Pacific Advanced Network - Japan 44 1,453 0 AS7575 AARNET-AS-AP - Australian Academic and Research Network (AARNet) 26 92 0 AS11537 INTERNET2-RESEARCH-EDU - Internet2 26 4 27 AS141682 AIPL-AS-AP - APIDT Infrastructure Pty Ltd 2 0 2 Downstream side (16)
AS Name AS paths IPv4 sightings IPv6 sightings AS24489 TEIN2-NORTH-AP - Trans-Eurasia Information Network (TEIN2) - North 4,479 1,918 4,348 AS11537 INTERNET2-RESEARCH-EDU - Internet2 1,853 10,863 221 AS20965 GEANT GEANT Vereniging 545 2,952 167 AS7575 AARNET-AS-AP - Australian Academic and Research Network (AARNet) 458 4,428 157 AS63961 BDREN-UGC-AS-AP - Bangladesh Research and Education Network (BdREN) 231 552 46 AS24514 MYREN-MY - MINISTRY OF HIGHER EDUCATION MALAYSIA 141 931 107 AS17579 KREONET2-AS-KR-KR - KISTI 45 537 0 AS24287 TEIN2-JP - National Institute of Informatics 30 20 10 AS141682 AIPL-AS-AP - APIDT Infrastructure Pty Ltd 25 51 46 AS9270 APAN-KR-AS-KR - National Infomation Society Agency 21 298 3 AS23855 SINGAREN-GIX-AS-AP - Singapore Advanced Research and Education Network 14 252 0 AS45773 HECPERN-AS-PK - PERN AS Content Servie Provider, Islamabad, Pakistan 11 43 405 AS9264 ASNet - Academia Sinica 10 44 2 AS38229 LEARN-LK - Lanka Education & Research Network, NREN 10 72 4 AS139588 ITC-CAM-AS-AP - Institute of Technology of Cambodia 9 15 0 AS9885 NKN-INTERNET-GW - NKN INTERNET GATEWAY NETWORK 4 1 9 Collector-only (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS38229 LEARN-LK - Lanka Education & Research Network, NREN 6,977 17,497 4,584
Raw RDAP 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/24490",
"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/24490",
"rel": "inaccuracy-report",
"href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
"type": "text/html"
}
]
}
],
"country": "CN",
"name": "TEIN2-SG-AP",
"status": [
"active"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T06:40:38Z"
},
{
"eventAction": "last changed",
"eventDate": "2020-09-03T09:16:20Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/24490",
"rel": "self",
"href": "https://rdap.apnic.net/autnum/24490",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"Trans-Eurasia Information Network (TEIN2) - SG",
"China Education and Research Network Center",
"Tsinghua University, Beijing 100084, China"
],
"title": "description"
}
],
"entities": [
{
"roles": [
"technical",
"administrative"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T07:54:16Z"
},
{
"eventAction": "last changed",
"eventDate": "2020-09-03T09:14:12Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/24490",
"rel": "self",
"href": "https://rdap.apnic.net/entity/CER-AP",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"[email protected]"
],
"title": "remarks"
}
],
"handle": "CER-AP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"CERNET Helpdesk"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "CERNET Center\nBeijing 100084, China"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+86-10-6278-4049"
],
[
"tel",
{
"type": "fax"
},
"text",
"+86-10-6278-5933"
],
[
"email",
{},
"text",
"[email protected]"
]
]
]
},
{
"roles": [
"abuse"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2010-11-26T03:14:01Z"
},
{
"eventAction": "last changed",
"eventDate": "2026-09-10T07:51:56Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/24490",
"rel": "self",
"href": "https://rdap.apnic.net/entity/IRT-CERNET-AP",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"timezone GMT+8",
"[email protected] was validated on 2026-09-10"
],
"title": "remarks"
}
],
"handle": "IRT-CERNET-AP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"IRT-CERNET-AP"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "Network Center,\nFIT-3-220, Tsinghua Univ\nBeijing 100084, China"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+86-10-62784301"
],
[
"tel",
{
"type": "fax"
},
"text",
"+86-10-62785933"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{
"pref": "1"
},
"text",
"[email protected]"
]
]
]
}
],
"handle": "AS24490",
"startAutnum": 24490,
"endAutnum": 24490,
"objectClassName": "autnum",
"port43": "whois.apnic.net"
} Contact details of private individuals are redacted.