Domain: KOSEIKENSETSU.CO.JP (3 similar domains)
Query Time: 6 Oct 2026 - 6:14 AM UTC [14 MINS BACK] [REFRESH]
Registered: 6th March 2000 [26 years, 7 months back]
Updated: 1st April 2026 [6 months, 5 days back]
NAME SERVERS
ns012-yfxurcn4yxscuxa4.y.d-53.info
ns012-yfxurcn4yxscuxa4.y.d-53.jp
ns012-yfxurcn4yxscuxa4.y.d-53.net
REGISTRANT CONTACT
Company: KOSEI Corporation
ADMINISTRATIVE CONTACT
Name: Yuki Zenko
Company: KOSEI Corporation
Email: [email protected]
TECHNICAL CONTACT
Name: Takahiko Fukawa
Company: JBCC Corporation (48 domains)
Email: [email protected]
Phone: 090-2537-4055
SHARE THIS PAGE
Short URL: whoxy.com/koseikensetsu.co.jp
Permalink: https://www.whoxy.com/koseikensetsu.co.jp
--------------------------------------------------
Generator: x2.autowhois.com
Registry WHOIS: whois.jprs.jp
Query Time: Tue, 06 Oct 2026 06:14:37 +0000
--------------------------------------------------
[ JPRS database provides information on network administration. Its use is ]
[ restricted to network administration purposes. For further information, ]
[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]
[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]
Domain Information:
a. [Domain Name] KOSEIKENSETSU.CO.JP
g. [Organization] KOSEI Corporation
l. [Organization Type] Corporation
m. [Administrative Contact] YZ7744JP
n. [Technical Contact] TF39717JP
p. [Name Server] ns012-yfxurcn4yxscuxa4.y.d-53.info
p. [Name Server] ns012-yfxurcn4yxscuxa4.y.d-53.jp
p. [Name Server] ns012-yfxurcn4yxscuxa4.y.d-53.net
s. [Signing Key] 30195 13 2 (
02923DE1467BFDFA9D3B0515F2015060
E3762148A885B7803921882239127038 )
[State] Connected (2027/03/31)
[Registered Date] 2000/03/06
[Connected Date] 2000/03/08
[Last Update] 2026/04/01 01:01:57 (JST)
------------------------------
Administrative Contact Details
------------------------------
Contact Information:
a. [JPNIC Handle] YZ7744JP
c. [Last, First] Zenko, Yuki
d. [E-Mail] [email protected]
g. [Organization] KOSEI Corporation
o. [TEL]
p. [FAX]
y. [Reply Mail] [email protected]
[Last Update] 2025/06/19 09:32:42 (JST)
[email protected]
------------------------------
Technical Contact Details
------------------------------
Contact Information:
a. [JPNIC Handle] TF39717JP
c. [Last, First] Fukawa, Takahiko
d. [E-Mail] [email protected]
g. [Organization] JBCC Corporation
l. [Division] ITS Division, West Japan ITS Headquarters, 2nd ITS Department
o. [TEL] 090-2537-4055
y. [Reply Mail] [email protected]
[Last Update] 2025/06/19 09:43:27 (JST)
[email protected]{
"status": 1,
"domain_name": "koseikensetsu.co.jp",
"query_time": "2026-10-06 06:14:37",
"domain_registered": "yes",
"create_date": "2000-03-06",
"update_date": "2026-04-01",
"registrant_contact": {
"company_name": "KOSEI Corporation"
},
"administrative_contact": {
"full_name": "Yuki Zenko",
"company_name": "KOSEI Corporation",
"email_address": "[email protected]"
},
"technical_contact": {
"full_name": "Takahiko Fukawa",
"company_name": "JBCC Corporation",
"email_address": "[email protected]",
"phone_number": "090-2537-4055"
},
"name_servers": [
"ns012-yfxurcn4yxscuxa4.y.d-53.info",
"ns012-yfxurcn4yxscuxa4.y.d-53.jp",
"ns012-yfxurcn4yxscuxa4.y.d-53.net"
],
"raw_whois": "--------------------------------------------------\nGenerator: x2.autowhois.com\nRegistry WHOIS: whois.jprs.jp\nQuery Time: Tue, 06 Oct 2026 06:14:37 +0000\n--------------------------------------------------\n\n[ JPRS database provides information on network administration. Its use is ]\r\n[ restricted to network administration purposes. For further information, ]\r\n[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]\r\n[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]\r\nDomain Information:\r\na. [Domain Name] KOSEIKENSETSU.CO.JP\r\ng. [Organization] KOSEI Corporation\r\nl. [Organization Type] Corporation\r\nm. [Administrative Contact] YZ7744JP\r\nn. [Technical Contact] TF39717JP\r\np. [Name Server] ns012-yfxurcn4yxscuxa4.y.d-53.info\r\np. [Name Server] ns012-yfxurcn4yxscuxa4.y.d-53.jp\r\np. [Name Server] ns012-yfxurcn4yxscuxa4.y.d-53.net\r\ns. [Signing Key] 30195 13 2 (\r\n 02923DE1467BFDFA9D3B0515F2015060\r\n E3762148A885B7803921882239127038 )\r\n[State] Connected (2027/03/31)\r\n[Registered Date] 2000/03/06\r\n[Connected Date] 2000/03/08\r\n[Last Update] 2026/04/01 01:01:57 (JST)\n\n------------------------------\nAdministrative Contact Details\n------------------------------\n\nContact Information:\r\na. [JPNIC Handle] YZ7744JP\r\nc. [Last, First] Zenko, Yuki\r\nd. [E-Mail] [email protected]\r\ng. [Organization] KOSEI Corporation\r\no. [TEL] \r\np. [FAX] \r\ny. [Reply Mail] [email protected]\r\n[Last Update] 2025/06/19 09:32:42 (JST)\r\n [email protected]\n\n------------------------------\nTechnical Contact Details\n------------------------------\n\nContact Information:\r\na. [JPNIC Handle] TF39717JP\r\nc. [Last, First] Fukawa, Takahiko\r\nd. [E-Mail] [email protected]\r\ng. [Organization] JBCC Corporation\r\nl. [Division] ITS Division, West Japan ITS Headquarters, 2nd ITS Department\r\no. [TEL] 090-2537-4055\r\ny. [Reply Mail] [email protected]\r\n[Last Update] 2025/06/19 09:43:27 (JST)\r\n [email protected]"
}<?xml version="1.0" encoding="UTF-8"?>
<root>
<status>1</status>
<domain_name>koseikensetsu.co.jp</domain_name>
<query_time>2026-10-06 06:14:37</query_time>
<domain_registered>yes</domain_registered>
<create_date>2000-03-06</create_date>
<update_date>2026-04-01</update_date>
<registrant_contact>
<company_name>KOSEI Corporation</company_name>
</registrant_contact>
<administrative_contact>
<full_name>Yuki Zenko</full_name>
<company_name>KOSEI Corporation</company_name>
<email_address>[email protected]</email_address>
</administrative_contact>
<technical_contact>
<full_name>Takahiko Fukawa</full_name>
<company_name>JBCC Corporation</company_name>
<email_address>[email protected]</email_address>
<phone_number>090-2537-4055</phone_number>
</technical_contact>
<name_servers>
<value>ns012-yfxurcn4yxscuxa4.y.d-53.info</value>
<value>ns012-yfxurcn4yxscuxa4.y.d-53.jp</value>
<value>ns012-yfxurcn4yxscuxa4.y.d-53.net</value>
</name_servers>
<raw_whois>--------------------------------------------------
Generator: x2.autowhois.com
Registry WHOIS: whois.jprs.jp
Query Time: Tue, 06 Oct 2026 06:14:37 +0000
--------------------------------------------------
[ JPRS database provides information on network administration. Its use is ]
[ restricted to network administration purposes. For further information, ]
[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]
[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]
Domain Information:
a. [Domain Name] KOSEIKENSETSU.CO.JP
g. [Organization] KOSEI Corporation
l. [Organization Type] Corporation
m. [Administrative Contact] YZ7744JP
n. [Technical Contact] TF39717JP
p. [Name Server] ns012-yfxurcn4yxscuxa4.y.d-53.info
p. [Name Server] ns012-yfxurcn4yxscuxa4.y.d-53.jp
p. [Name Server] ns012-yfxurcn4yxscuxa4.y.d-53.net
s. [Signing Key] 30195 13 2 (
02923DE1467BFDFA9D3B0515F2015060
E3762148A885B7803921882239127038 )
[State] Connected (2027/03/31)
[Registered Date] 2000/03/06
[Connected Date] 2000/03/08
[Last Update] 2026/04/01 01:01:57 (JST)
------------------------------
Administrative Contact Details
------------------------------
Contact Information:
a. [JPNIC Handle] YZ7744JP
c. [Last, First] Zenko, Yuki
d. [E-Mail] [email protected]
g. [Organization] KOSEI Corporation
o. [TEL]
p. [FAX]
y. [Reply Mail] [email protected]
[Last Update] 2025/06/19 09:32:42 (JST)
[email protected]
------------------------------
Technical Contact Details
------------------------------
Contact Information:
a. [JPNIC Handle] TF39717JP
c. [Last, First] Fukawa, Takahiko
d. [E-Mail] [email protected]
g. [Organization] JBCC Corporation
l. [Division] ITS Division, West Japan ITS Headquarters, 2nd ITS Department
o. [TEL] 090-2537-4055
y. [Reply Mail] [email protected]
[Last Update] 2025/06/19 09:43:27 (JST)
[email protected]</raw_whois>
</root>
Whois Lookup API
You can fetch the above results using our Whois Lookup API.
https://api.whoxy.com/?key=xxxxx&whois=koseikensetsu.co.jp
Whois API digs into WHOIS registry referral chains until the correct WHOIS servers are found, for the most complete WHOIS data.
Our WHOIS parser converts WHOIS data into well-structured fields (XML & JSON), which can easily be read by your application.
Whois API supports a total of 2026 Domain Extensions (gTLDs, ccTLDs & new gTLDs), ensuring all domains are supported.
Sample Output: JSON Schema • XML Schema • JSON Live Results • XML Live Results
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Who owned koseikensetsu.co.jp in the past? (2 records)
27 MAR 2024
Company: KOSEI CORPORATION
Nameservers: dns.koseikensetsu.co.jp, dns13.dion.ne.jp
2 MAR 2026
Company: KOSEI CORPORATION
Nameservers: ns012-yfxurcn4yxscuxa4.y.d-53.info, ns012-yfxurcn4yxscuxa4.y.d-53.jp, ns012-yfxurcn4yxscuxa4.y.d-53.net UPDATED
Whois History API returns all the historical WHOIS records of a domain name. For more details, please visit https://www.whoxy.com/whois-history/