Organization
CERNET-CN
Location
Haidian (Haidian Qu)
Beijing, China (CN)
Hostname
—
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 211.81.0.0 – 211.82.255.255 CIDR 211.81.0.0/16, 211.82.0.0/16 Network Name CERNET-CN Handle 211.81.0.0 - 211.82.255.255 Type ALLOCATED PORTABLE Country China (CN) Registry APNIC Description China Education and Research Network, Beijing Regional Network 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 211.80.0.0/13 AS Registry APNIC Prefix Country China (CN) Allocated 2000-08-01 RPKI Origin Not found (no ROA covers this prefix)
Reverse DNS
No PTR record is published for this address.
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/211.82.16.0",
"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/211.82.16.0",
"rel": "inaccuracy-report",
"href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
"type": "text/html"
}
]
}
],
"country": "CN",
"name": "CERNET-CN",
"status": [
"active"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T06:49:52Z"
},
{
"eventAction": "last changed",
"eventDate": "2020-10-20T00:56:14Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/ip/211.82.16.0",
"rel": "self",
"href": "https://rdap.apnic.net/ip/211.81.0.0/16",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"China Education and Research Network",
"Beijing Regional Network"
],
"title": "description"
}
],
"entities": [
{
"roles": [
"technical"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T07:29:18Z"
},
{
"eventAction": "last changed",
"eventDate": "2011-12-22T05:14:36Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/ip/211.82.16.0",
"rel": "self",
"href": "https://rdap.apnic.net/entity/SZ2-AP",
"type": "application/rdap+json"
}
],
"handle": "SZ2-AP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"roles": [
"administrative"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T07:29:13Z"
},
{
"eventAction": "last changed",
"eventDate": "2011-12-22T05:14:25Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/ip/211.82.16.0",
"rel": "self",
"href": "https://rdap.apnic.net/entity/JW1-CN",
"type": "application/rdap+json"
}
],
"handle": "JW1-CN",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"roles": [
"technical"
],
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T07:29:13Z"
},
{
"eventAction": "last changed",
"eventDate": "2011-12-22T05:14:25Z"
}
],
"links": [
{
"value": "https://rdap.apnic.net/ip/211.82.16.0",
"rel": "self",
"href": "https://rdap.apnic.net/entity/XL1-CN",
"type": "application/rdap+json"
}
],
"handle": "XL1-CN",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"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/211.82.16.0",
"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": "211.81.0.0 - 211.82.255.255",
"type": "ALLOCATED PORTABLE",
"startAddress": "211.81.0.0",
"endAddress": "211.82.255.255",
"objectClassName": "ip network",
"ipVersion": "v4",
"cidr0_cidrs": [
{
"v4prefix": "211.81.0.0",
"length": 16
},
{
"v4prefix": "211.82.0.0",
"length": 16
}
],
"port43": "whois.apnic.net"
} Contact details of private individuals are redacted.