Second-level extension

.co.jp

.co.jp is a second-level zone under the .jp extension (Japan). Registration is handled by the .jp registry. Registry: Japan Registry Services Co., Ltd.; registered since 5 August 1986 (.jp), available at 1blu on request via kissdomain.

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General

Extension
.co.jp
Type
Second-level extension
Meaning
Second-level zone under .jp (Japan)
Parent extension
.jp
Registry
Japan Registry Services Co., Ltd.
Registry website
jprs.jp
Registered since
5 August 1986 (.jp)

Properties

DNSSEC in the root zone
.jp: yes
Name servers
.jp: 8 (7 with IPv6)
WHOIS server
whois.jprs.jp
RDAP server
none reported to IANA
At 1blu
on request via kissdomain

Registration conditions

Who may register?
Only companies registered in Japan, including foreign companies registered as Gaikoku Kaisha.
Allocation
Only one domain per company.

Sources: JPRS: Guide to JP Domain Name · IANA Root Zone Database: .jp · As of 25 October 2026

Related extensions

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