Whois & RDAP Lookup
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RDAPHandleAS4837
NameCHINA169-Backbone
CountryCN
Registered2008-09-04 06:40 UTC
Updated2024-02-06 04:05 UTC
Admin ContactCNCGroup Hostmaster
Email[email protected]
Phone+86-10-66259764
AddressNo.21,Financial Street, Beijing,100033,P.R.China
Tech ContactCNCGroup Hostmaster
Email[email protected]
Phone+86-10-66259764
AddressNo.21,Financial Street, Beijing,100033,P.R.China
Abuse Contact[email protected]
Statusactive
Registry RDAPhttps://rdap.apnic.net
Raw WHOIS response
% [whois.apnic.net] % Whois data copyright terms http://www.apnic.net/db/dbcopyright.html % Information related to 'AS4608 - AS4865' as-block: AS4608 - AS4865 descr: APNIC ASN block remarks: These AS numbers are further assigned by APNIC remarks: to APNIC members and end-users in the APNIC region admin-c: HM20-AP tech-c: HM20-AP mnt-by: APNIC-HM mnt-lower: APNIC-HM last-modified: 2019-05-20T03:52:26Z source: APNIC role: APNIC Hostmaster address: 6 Cordelia Street address: South Brisbane address: QLD 4101 country: AU phone: +61 7 3858 3100 fax-no: +61 7 3858 3199 e-mail: [email protected] admin-c: AMS11-AP tech-c: AH256-AP nic-hdl: HM20-AP remarks: Administrator for APNIC notify: [email protected] mnt-by: MAINT-APNIC-AP last-modified: 2013-10-23T04:06:51Z source: APNIC % Information related to 'AS4837' % Abuse contact for 'AS4837' is '[email protected]' aut-num: AS4837 as-name: CHINA169-Backbone descr: CHINA UNICOM China169 Backbone country: CN member-of: AS4837:AS-CNCGROUP import: from AS701 action pref=100; accept ANY import: from AS1239 action pref=100; accept ANY import: from AS4808 action pref=100; accept AS4808 import: from AS4814 action pref=100; accept AS4814 import: from AS17816 action pref=100; accept AS17816 import: from AS-ANY accept ANY export: to AS701 announce AS4837 export: to AS1239 announce AS4837 export: to AS4808 announce AS4837 export: to AS4814 announce AS4837 export: to AS17816 announce AS4837 export: to AS-ANY announce AS4837:AS-CNCGROUP admin-c: CH444-AP tech-c: CH444-AP abuse-c: AC1718-AP mnt-routes: MAINT-CNCGROUP-RR mnt-by: MAINT-CNCGROUP-RR mnt-irt: IRT-CU-CN last-modified: 2024-02-06T04:05:55Z source: APNIC irt: IRT-CU-CN address: No.21,Financial Street address: Beijing,100033 address: P.R.China e-mail: [email protected] abuse-mailbox: [email protected] admin-c: CH1302-AP tech-c: CH1302-AP auth: # Filtered remarks: [email protected] was validated on 2026-05-08 mnt-by: MAINT-CNCGROUP last-modified: 2026-05-09T04:50:16Z source: APNIC role: ABUSE CUCN country: ZZ address: No.21,Financial Street address: Beijing,100033 address: P.R.China phone: +000000000 e-mail: [email protected] admin-c: CH1302-AP tech-c: CH1302-AP nic-hdl: AC1718-AP remarks: Generated from irt object IRT-CU-CN remarks: [email protected] was validated on 2026-05-08 abuse-mailbox: [email protected] mnt-by: APNIC-ABUSE last-modified: 2026-05-08T01:31:32Z source: APNIC person: CNCGroup Hostmaster nic-hdl: CH444-AP e-mail: [email protected] address: No.21,Financial Street address: Beijing,100033,P.R.China phone: +86-10-66259764 fax-no: +86-10-66259764 country: CN mnt-by: MAINT-CN-CUCGROUP last-modified: 2017-09-05T06:36:14Z source: APNIC % This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-SG1) % Query time: 356 msec % WHEN: Wed Jul 29 00:25:19 UTC 2026
Raw RDAP JSON (registry) https://rdap.apnic.net
{
"country": "CN",
"endAutnum": 4837,
"entities": [
{
"events": [
{
"eventAction": "registration",
"eventDate": "2010-11-10T01:01:15Z"
},
{
"eventAction": "last changed",
"eventDate": "2026-05-09T04:50:16Z"
}
],
"handle": "IRT-CU-CN",
"links": [
{
"href": "https://rdap.apnic.net/entity/IRT-CU-CN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.apnic.net/autnum/4837"
}
],
"objectClassName": "entity",
"remarks": [
{
"description": [
"[email protected] was validated on 2026-05-08"
],
"title": "remarks"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"IRT-CU-CN"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "No.21,Financial Street\nBeijing,100033\nP.R.China"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{
"pref": "1"
},
"text",
"[email protected]"
]
]
]
},
{
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T07:29:11Z"
},
{
"eventAction": "last changed",
"eventDate": "2017-09-05T06:36:14Z"
}
],
"handle": "CH444-AP",
"links": [
{
"href": "https://rdap.apnic.net/entity/CH444-AP",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.apnic.net/autnum/4837"
}
],
"objectClassName": "entity",
"roles": [
"technical",
"administrative"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"CNCGroup Hostmaster"
],
[
"kind",
{},
"text",
"individual"
],
[
"adr",
{
"label": "No.21,Financial Street\nBeijing,100033,P.R.China"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+86-10-66259764"
],
[
"tel",
{
"type": "fax"
},
"text",
"+86-10-66259764"
],
[
"email",
{},
"text",
"[email protected]"
]
]
]
}
],
"events": [
{
"eventAction": "registration",
"eventDate": "2008-09-04T06:40:31Z"
},
{
"eventAction": "last changed",
"eventDate": "2024-02-06T04:05:55Z"
}
],
"handle": "AS4837",
"links": [
{
"href": "https://rdap.apnic.net/autnum/4837",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.apnic.net/autnum/4837"
}
],
"name": "CHINA169-Backbone",
"notices": [
{
"description": [
"Objects returned came from source",
"APNIC"
],
"title": "Source"
},
{
"description": [
"This is the APNIC WHOIS Database query service. The objects are in RDAP format."
],
"links": [
{
"href": "http://www.apnic.net/db/dbcopyright.html",
"rel": "terms-of-service",
"type": "text/html",
"value": "https://rdap.apnic.net/autnum/4837"
}
],
"title": "Terms and Conditions"
},
{
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.apnic.net/autnum/4837"
}
],
"title": "Whois Inaccuracy Reporting"
}
],
"objectClassName": "autnum",
"port43": "whois.apnic.net",
"rdapConformance": [
"history_version_0",
"nro_rdap_profile_0",
"nro_rdap_profile_asn_hierarchical_0",
"cidr0",
"rdap_level_0"
],
"remarks": [
{
"description": [
"CHINA UNICOM China169 Backbone"
],
"title": "description"
}
],
"startAutnum": 4837,
"status": [
"active"
]
}Frequently asked questions
What is WHOIS?
WHOIS is a public directory that answers "who is responsible for this?" for domains, IP ranges and ASNs. It lists registration dates, the registrar, nameservers and contacts.
What is RDAP, and how does it differ?
RDAP is the modern replacement for WHOIS. It returns the same records in a structured, consistent format. We query RDAP first and fall back to classic WHOIS text when a registry has not adopted it yet.
What is the difference between a registrar and a registrant?
The registrar is the company you register and manage a domain through, such as xTom or GoDaddy. The registrant is the person or organization that actually holds the domain.
What are nameservers?
Nameservers answer DNS questions for a domain and decide which IP addresses the name resolves to. They also show which DNS provider the domain uses.
What is DNSSEC?
DNSSEC adds cryptographic signatures to DNS answers so they cannot be quietly altered in transit. "Signed" means the domain has it enabled, "unsigned" means it does not.
Why is the contact information redacted?
Privacy laws such as GDPR require registrars to hide most personal details in public records. The abuse contact is usually still shown, so a domain or network can be reported when something goes wrong.