AS142664
China Education and Research Network (CERNET)
Registration
IPv4 Prefixes
This AS does not currently announce any IPv4 prefixes.
IPv6 Prefixes
258 prefixes · 65,536 × /48 · 1 top-level Routing data as of 2026-10-04 16:00 UTC
240a::/16 · 258 prefixes · 65,536 × /48
BGP Neighbours
3 unique neighbours · 2 upstream/peer · 1 downstream. 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). Upstream & peer side (2)
Downstream side (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS142663 AS142663-14 - China Education and Research Network (CERNET) 237 0 344
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/142664",
"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/142664",
"rel": "inaccuracy-report",
"href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
"type": "text/html"
}
]
}
],
"country": "CN",
"status": [
"active"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2021-04-29T04:06:48Z"
},
{
"eventAction": "last changed",
"eventDate": "2021-04-29T04:06:48Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/142664",
"rel": "self",
"href": "https://rdap.apnic.net/autnum/142650",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"China Education and Research Network (CERNET)",
"CERNET AS Block for FITI Slices"
],
"title": "description"
}
],
"entities": [
{
"roles": [
"registrant"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2017-12-20T12:57:07Z"
},
{
"eventAction": "last changed",
"eventDate": "2018-09-13T12:56:34Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/autnum/142664",
"rel": "self",
"href": "https://rdap.apnic.net/entity/ORG-CEAR1-AP",
"type": "application/rdap+json"
}
],
"handle": "ORG-CEAR1-AP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"China Education and Research Network (CERNET)"
],
[
"kind",
{},
"text",
"org"
],
[
"adr",
{
"label": "FIT 3-220,\nTsinghua University"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+86-10-62785983"
],
[
"tel",
{
"type": "fax"
},
"text",
"+86-10-62785933"
],
[
"email",
{},
"text",
"[email protected]"
]
]
]
},
{
"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/142664",
"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]"
]
]
]
}
],
"handle": "AS142650 - AS143163",
"startAutnum": 142650,
"endAutnum": 143163,
"objectClassName": "autnum",
"port43": "whois.apnic.net"
} Contact details of private individuals are redacted.