Whois & RDAP Lookup
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RDAPIP Range101.0.8.0 - 101.0.15.255
Handle101.0.8.0 - 101.0.15.255
NameW-CAST-2-AS-AP
TypeALLOCATED PORTABLE
CountryJP
HolderDouble Cast Inc.
Registered2010-12-09 06:37 UTC
Updated2020-07-22 01:44 UTC
RegistrantDouble Cast Inc.
Email[email protected]
Phone+81-3-3350-7762
AddressFuji Shinjuku Building 4th floor, Shinjuku 5-11-13
Admin ContactYoshihiko Mochizuki
Email[email protected]
Phone+81-3-3350-7762
AddressFuji Shinjuku Building 4th floor, Shinjuku 5-11-13 Shinjuku-ku, Tokyo 160-0022 Japan
Tech ContactYoshihiko Mochizuki
Email[email protected]
Phone+81-3-3350-7762
AddressFuji Shinjuku Building 4th floor, Shinjuku 5-11-13 Shinjuku-ku, Tokyo 160-0022 Japan
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 '101.0.12.0 - 101.0.12.255'
% Abuse contact for '101.0.12.0 - 101.0.12.255' is '[email protected]'
inetnum: 101.0.12.0 - 101.0.12.255
netname: NTT_Communications_Corporation
descr: NTT Communications Corporation
country: JP
admin-c: KW770-AP
tech-c: KW770-AP
abuse-c: KW770-AP
status: ALLOCATED NON-PORTABLE
mnt-by: MAINT-JP-DOUBLECAST
mnt-irt: IRT-W-CAST-2-JP
last-modified: 2026-09-02T05:12:58Z
remarks: For SPAM/ABUSE Issue:[email protected]
geofeed: https://directpath.cloud/geofeed.csv
source: APNIC
irt: IRT-W-CAST-2-JP
address: Fuji Shinjuku Building 4th floor
address: Shinjuku 5-11-13 Shinjuku-ku
address: Tokyo 160-0022 Japan
e-mail: [email protected]
abuse-mailbox: [email protected]
admin-c: EN126-AP
tech-c: EN126-AP
auth: # Filtered
remarks: [email protected] was validated on 2026-09-09
mnt-by: MAINT-JP-DOUBLECAST
last-modified: 2026-09-09T02:09:40Z
source: APNIC
person: Kevin Wang
address: 61 BRIDGE STREET KINGTON UNITED KINGDOM HR5 3DJ
country: GB
phone: +852-46768849
e-mail: [email protected]
nic-hdl: KW770-AP
mnt-by: MAINT-GLOBAL-NA-JP
last-modified: 2025-06-16T06:28:18Z
source: APNIC
% Information related to '101.0.12.0/24AS2914'
route: 101.0.12.0/24
origin: AS2914
descr: Double Cast Inc.
Fuji Shinjuku Building 4th floor
Shinjuku 5-11-13
mnt-by: MAINT-JP-DOUBLECAST
last-modified: 2026-03-03T08:10:20Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-JP1)
% Query time: 357 msec
% WHEN: Sun Sep 27 02:47:33 UTC 2026Raw RDAP JSON (registry) https://rdap.apnic.net
{
"cidr0_cidrs": [
{
"length": 21,
"v4prefix": "101.0.8.0"
}
],
"country": "JP",
"endAddress": "101.0.15.255",
"entities": [
{
"events": [
{
"eventAction": "registration",
"eventDate": "2010-09-14T09:50:46Z"
},
{
"eventAction": "last changed",
"eventDate": "2011-03-13T10:42:49Z"
}
],
"handle": "YM929-AP",
"links": [
{
"href": "https://rdap.apnic.net/entity/YM929-AP",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.apnic.net/ip/101.0.12.0/22"
}
],
"objectClassName": "entity",
"roles": [
"technical",
"administrative"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Yoshihiko Mochizuki"
],
[
"kind",
{},
"text",
"individual"
],
[
"adr",
{
"label": "Fuji Shinjuku Building 4th floor\nShinjuku 5-11-13 Shinjuku-ku\nTokyo 160-0022 Japan"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+81-3-3350-7762"
],
[
"email",
{},
"text",
"[email protected]"
]
]
]
},
{
"events": [
{
"eventAction": "registration",
"eventDate": "2017-08-08T23:26:03Z"
},
{
"eventAction": "last changed",
"eventDate": "2023-09-05T02:15:43Z"
}
],
"handle": "ORG-DCI2-AP",
"links": [
{
"href": "https://rdap.apnic.net/entity/ORG-DCI2-AP",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.apnic.net/ip/101.0.12.0/22"
}
],
"objectClassName": "entity",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Double Cast Inc."
],
[
"kind",
{},
"text",
"org"
],
[
"adr",
{
"label": "Fuji Shinjuku Building 4th floor\nShinjuku 5-11-13"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+81-3-3350-7762"
],
[
"tel",
{
"type": "fax"
},
"text",
"+81-3-3350-8685"
],
[
"email",
{},
"text",
"[email protected]"
]
]
]
},
{
"events": [
{
"eventAction": "registration",
"eventDate": "2010-11-16T00:38:09Z"
},
{
"eventAction": "last changed",
"eventDate": "2026-09-09T02:09:40Z"
}
],
"handle": "IRT-W-CAST-2-JP",
"links": [
{
"href": "https://rdap.apnic.net/entity/IRT-W-CAST-2-JP",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.apnic.net/ip/101.0.12.0/22"
}
],
"objectClassName": "entity",
"remarks": [
{
"description": [
"[email protected] was validated on 2026-09-09"
],
"title": "remarks"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"IRT-W-CAST-2-JP"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "Fuji Shinjuku Building 4th floor\nShinjuku 5-11-13 Shinjuku-ku\nTokyo 160-0022 Japan"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{
"pref": "1"
},
"text",
"[email protected]"
]
]
]
}
],
"events": [
{
"eventAction": "registration",
"eventDate": "2010-12-09T06:37:50Z"
},
{
"eventAction": "last changed",
"eventDate": "2020-07-22T01:44:13Z"
}
],
"handle": "101.0.8.0 - 101.0.15.255",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.apnic.net/ip/101.0.8.0/21",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.apnic.net/ip/101.0.12.0/22"
}
],
"name": "W-CAST-2-AS-AP",
"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/101.0.12.0/22"
}
],
"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/101.0.12.0/22"
}
],
"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": [
"Double Cast Inc.",
"Fuji Shinjuku Building 4th floor",
"Shinjuku 5-11-13"
],
"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": "101.0.8.0",
"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.