Open WHOISbuilt by Just

.cu WHOIS lookup

.cu is managed by CENIAInternet. Its registry has no RDAP service yet, so a lookup here shows the domain's DNS setup, or the registry's website.

Managed by

CENIAInternet

As listed by IANA

RDAP

None yet

Lookups show DNS only

WHOIS server

None listed

DNSSEC

Not signed

The ending is not signed in the root zone

In the root zone since

3 June 1992

Registry website

www.nic.cu

What a .cu lookup shows

The nameservers and the mail setup read from DNS. Registration details need the registry's own lookup until it offers RDAP.

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Ending: .cu
Managed by: CENIAInternet
RDAP base URL: none
WHOIS server: none listed
DNSSEC signed in the root: no
Source: IANA root zone database and RDAP bootstrap, read 2026-10-31
Lookup URL: https://openwhois.org/#d=example.cu