Organization
NSFCNET-CN-20050207
Location
Haidian (Haidian Qu)
Beijing, China (CN)
Hostname
cernet2.net
Geolocation
China (CN) China
- Country
- China (CN)
- Region
- Beijing
- City
- Haidian (Haidian Qu)
- Continent
- Asia
- Coordinates
- 39.9997, 116.326 View on map ↗
Network Information
IP Range 2001:daa:: – 2001:daa:ffff:ffff:ffff:ffff:ffff:ffff CIDR 2001:daa::/32 Network Name NSFCNET-CN-20050207 Handle 2001:daa::/32 Type ALLOCATED PORTABLE Country China (CN) Registry APNIC Description Natural Science Foundation of China Network (NSFCNET), CERNET Center, Beijing 100084, China Registered On Sep 04, 2008 Last Updated Oct 20, 2020 Status
active
ASN & Routing
Origin AS AS4538 AS Name ERX-CERNET-BKB - China Education and Research Network Center, CN Announced Prefix 2001:daa:4::/48 AS Registry APNIC Prefix Country China (CN) Allocated 2005-02-07 RPKI Origin Not found (no ROA covers this prefix)
Reverse DNS
PTR Record
cernet2.net
Abuse Contact
Raw RDAP Response
{
"rdapConformance": [
"history_version_0",
"nro_rdap_profile_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/ip/2001:daa:4::",
"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/ip/2001:daa:4::",
"rel": "inaccuracy-report",
"href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
"type": "text/html"
}
]
}
],
"country": "CN",
"name": "NSFCNET-CN-20050207",
"status": [
"active"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T06:49:19Z"
},
{
"eventAction": "last changed",
"eventDate": "2020-10-20T00:55:19Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/ip/2001:daa:4::",
"rel": "self",
"href": "https://rdap.apnic.net/ip/2001:daa::/32",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"Natural Science Foundation of China Network (NSFCNET)",
"CERNET Center",
"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/ip/2001:daa:4::",
"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/ip/2001:daa:4::",
"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": "2001:daa::/32",
"type": "ALLOCATED PORTABLE",
"startAddress": "2001:daa::",
"endAddress": "2001:daa:ffff:ffff:ffff:ffff:ffff:ffff",
"objectClassName": "ip network",
"ipVersion": "v6",
"cidr0_cidrs": [
{
"v6prefix": "2001:daa::",
"length": 32
}
],
"port43": "whois.apnic.net"
} Contact details of private individuals are redacted.