Whois & RDAP Lookup
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IP Geolocation RDAPIP Range2400:ddc0:: - 2400:ddc0:ffff:ffff:ffff:ffff:ffff:ffff
Handle2400:ddc0::/32
NameCAT-JP
TypeALLOCATED PORTABLE
CountryJP
HolderCat Networks K.K.
Registered2017-03-17 03:34 UTC
Updated2020-05-12 13:56 UTC
RegistrantCat Networks K.K.
Email[email protected]
Phone+81-669499281
Address6-Chome 7-2 Nishitenma, Kita-ku
Admin ContactCat Networks KK administrator
Email[email protected]
Phone+81-0669499281
Address6-Chome 7-2 Nishitenma, Kita-ku, Osaka Osaka 530-0047
Tech ContactCat Networks KK administrator
Email[email protected]
Phone+81-0669499281
Address6-Chome 7-2 Nishitenma, Kita-ku, Osaka Osaka 530-0047
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 '2400:ddc0::/32'
% Abuse contact for '2400:ddc0::/32' is '[email protected]'
inet6num: 2400:ddc0::/32
netname: CAT-JP
descr: Cat Networks K.K.
country: JP
geoloc: 34.6937 135.5022
org: ORG-CNK1-AP
admin-c: CNKA1-AP
tech-c: CNKA1-AP
abuse-c: AC1582-AP
status: ALLOCATED PORTABLE
remarks: --------------------------------------------------------
remarks: To report network abuse, please contact mnt-irt
remarks: For troubleshooting, please contact tech-c and admin-c
remarks: Report invalid contact via www.apnic.net/invalidcontact
remarks: --------------------------------------------------------
mnt-by: APNIC-HM
mnt-lower: MAINT-CAT-JP
mnt-routes: MAINT-CAT-JP
mnt-irt: IRT-CAT-JP
last-modified: 2020-05-12T13:56:45Z
source: APNIC
irt: IRT-CAT-JP
address: 6-Chome 7-2 Nishitenma, Kita-ku, Osaka Osaka 530-0047
e-mail: [email protected]
abuse-mailbox: [email protected]
admin-c: CNKA1-AP
tech-c: CNKA1-AP
auth: # Filtered
remarks: [email protected] was validated on 2026-03-11
remarks: [email protected] was validated on 2026-03-11
mnt-by: MAINT-CAT-JP
last-modified: 2026-03-11T06:48:15Z
source: APNIC
organisation: ORG-CNK1-AP
org-name: Cat Networks K.K.
org-type: LIR
country: JP
address: 6-Chome 7-2 Nishitenma
address: Kita-ku
phone: +81-669499281
fax-no: +81-669499282
e-mail: [email protected]
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2023-09-05T02:17:12Z
source: APNIC
role: ABUSE CATJP
country: ZZ
address: 6-Chome 7-2 Nishitenma, Kita-ku, Osaka Osaka 530-0047
phone: +000000000
e-mail: [email protected]
admin-c: CNKA1-AP
tech-c: CNKA1-AP
nic-hdl: AC1582-AP
remarks: Generated from irt object IRT-CAT-JP
remarks: [email protected] was validated on 2026-03-11
remarks: [email protected] was validated on 2026-03-11
abuse-mailbox: [email protected]
mnt-by: APNIC-ABUSE
last-modified: 2026-03-11T06:48:44Z
source: APNIC
role: Cat Networks KK administrator
address: 6-Chome 7-2 Nishitenma, Kita-ku, Osaka Osaka 530-0047
country: JP
phone: +81-0669499281
fax-no: +81-0669499281
e-mail: [email protected]
admin-c: CNKA1-AP
tech-c: CNKA1-AP
nic-hdl: CNKA1-AP
mnt-by: MAINT-CAT-JP
last-modified: 2017-03-15T08:36:07Z
source: APNIC
% Information related to '2400:ddc0:1000::/48AS4785'
route6: 2400:ddc0:1000::/48
origin: AS4785
descr: Cat Networks K.K.
6-Chome 7-2 Nishitenma
Kita-ku
mnt-by: MAINT-CAT-JP
last-modified: 2021-05-07T10:25:45Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-SG1)
% Query time: 467 msec
% WHEN: Wed Jul 29 06:45:38 UTC 2026Raw RDAP JSON (registry) https://rdap.apnic.net
{
"cidr0_cidrs": [
{
"length": 32,
"v6prefix": "2400:ddc0::"
}
],
"country": "JP",
"endAddress": "2400:ddc0:ffff:ffff:ffff:ffff:ffff:ffff",
"entities": [
{
"events": [
{
"eventAction": "registration",
"eventDate": "2017-03-15T08:36:06Z"
},
{
"eventAction": "last changed",
"eventDate": "2017-03-15T08:36:07Z"
}
],
"handle": "CNKA1-AP",
"links": [
{
"href": "https://rdap.apnic.net/entity/CNKA1-AP",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.apnic.net/ip/2400:ddc0:1000::d47e:5f3e"
}
],
"objectClassName": "entity",
"roles": [
"technical",
"administrative"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Cat Networks KK administrator"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "6-Chome 7-2 Nishitenma, Kita-ku, Osaka Osaka 530-0047"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+81-0669499281"
],
[
"tel",
{
"type": "fax"
},
"text",
"+81-0669499281"
],
[
"email",
{},
"text",
"[email protected]"
]
]
]
},
{
"events": [
{
"eventAction": "registration",
"eventDate": "2017-03-15T08:36:08Z"
},
{
"eventAction": "last changed",
"eventDate": "2026-03-11T06:48:15Z"
}
],
"handle": "IRT-CAT-JP",
"links": [
{
"href": "https://rdap.apnic.net/entity/IRT-CAT-JP",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.apnic.net/ip/2400:ddc0:1000::d47e:5f3e"
}
],
"objectClassName": "entity",
"remarks": [
{
"description": [
"[email protected] was validated on 2026-03-11",
"[email protected] was validated on 2026-03-11"
],
"title": "remarks"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"IRT-CAT-JP"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "6-Chome 7-2 Nishitenma, Kita-ku, Osaka Osaka 530-0047"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{
"pref": "1"
},
"text",
"[email protected]"
]
]
]
},
{
"events": [
{
"eventAction": "registration",
"eventDate": "2017-08-08T23:24:18Z"
},
{
"eventAction": "last changed",
"eventDate": "2023-09-05T02:17:12Z"
}
],
"handle": "ORG-CNK1-AP",
"links": [
{
"href": "https://rdap.apnic.net/entity/ORG-CNK1-AP",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.apnic.net/ip/2400:ddc0:1000::d47e:5f3e"
}
],
"objectClassName": "entity",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Cat Networks K.K."
],
[
"kind",
{},
"text",
"org"
],
[
"adr",
{
"label": "6-Chome 7-2 Nishitenma\nKita-ku"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+81-669499281"
],
[
"tel",
{
"type": "fax"
},
"text",
"+81-669499282"
],
[
"email",
{},
"text",
"[email protected]"
]
]
]
}
],
"events": [
{
"eventAction": "registration",
"eventDate": "2017-03-17T03:34:36Z"
},
{
"eventAction": "last changed",
"eventDate": "2020-05-12T13:56:45Z"
}
],
"handle": "2400:ddc0::/32",
"ipVersion": "v6",
"links": [
{
"href": "https://rdap.apnic.net/ip/2400:ddc0::/32",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.apnic.net/ip/2400:ddc0:1000::d47e:5f3e"
}
],
"name": "CAT-JP",
"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/ip/2400:ddc0:1000::d47e:5f3e"
}
],
"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/ip/2400:ddc0:1000::d47e:5f3e"
}
],
"title": "Whois Inaccuracy Reporting"
}
],
"objectClassName": "ip network",
"port43": "whois.apnic.net",
"rdapConformance": [
"history_version_0",
"nro_rdap_profile_0",
"cidr0",
"rdap_level_0"
],
"remarks": [
{
"description": [
"Cat Networks K.K."
],
"title": "description"
},
{
"description": [
"--------------------------------------------------------",
"To report network abuse, please contact mnt-irt",
"For troubleshooting, please contact tech-c and admin-c",
"Report invalid contact via www.apnic.net/invalidcontact",
"--------------------------------------------------------"
],
"title": "remarks"
}
],
"startAddress": "2400:ddc0::",
"status": [
"active"
],
"type": "ALLOCATED PORTABLE"
}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.