• AI Domains
  • Pricing
  • Membership

    • .cu

    Country-code top-level domains

    Overview

    • .cu is the country code top-level domain (ccTLD) assigned to Cuba.
    • It is managed by CUBANIC / Cuba-NIC and operated/sponsored by CENIA Internet (CITMATEL).
    • The domain was introduced on 3 June 1992 and is reported as very popular within Cuba.
    • Registrations are possible at the second level (example.cu) and at the third level beneath a set of generic second-level categories (example.com.cu, example.edu.cu, etc.).
    • Registered domains: 7,882 (data as of 10 July 2023).

    History

    • Introduced/implemented: 3 June 1992.
    • Registry/operator: CUBANIC (Cuba-NIC) / CENIA Internet (also cited as the sponsor via CITMATEL).
    • The IANA delegation record and national registry (nic.cu) are the authoritative sources for delegation and management details.
    • Dispute policy: None (as reported by registry information).

    Usage and Audience

    • Intended for entities connected with Cuba; widely used inside the country.
    • Typical registrants:
      • Cuban legal entities and organizations
      • Natural persons residing in Cuba
      • Foreign legal entities (with more limited eligibility, see Registration Rules)
    • Common second-level categories target specific sectors and audiences:
      • .com.cu — commercial entities
      • .edu.cu — educational institutions
      • .gob.cu — government bodies and agencies
      • .net.cu — internet service providers / public telecommunications providers
      • .org.cu — non-governmental and non-profit organizations
      • .inf.cu — scientific information and content providers
      • .nat.cu — natural persons residing in Cuba
      • .co.cu, .sld.cu, .tur.cu, .cult.cu — external/sector-specific delegations (commercial, health, tourism, culture)

    Registration Rules

    Eligibility and restrictions

    • Cuban and foreign legal entities, as well as natural persons residing in Cuba, may apply for domain names.
    • Cuban legal entities may register under .cu or generic second-level domains such as .edu.cu, .gob.cu, .org.cu, .inf.cu, .net.cu, and .com.cu.
    • Foreign legal entities may apply for domain names under .cu or specifically under .com.cu.
    • Natural persons residing in Cuba may apply under .nat.cu.

    Requirements for granting a domain name

    • A legal entity may be granted a name if it:
      • Constitutes a trademark granted to the applicant by the Oficina Cubana de la Propiedad Industrial (OCPI), or
      • Fully matches the name of the applicant, its acronym, abbreviation, or legally recognized alias, or
      • Meets other criteria that are not among listed exceptions.
    • An individual may be granted a name if it:
      • Constitutes a trademark granted by OCPI, or
      • Is any other name that does not fall under the listed exceptions.

    Prohibited or excluded names

    A domain name will not be granted if it:

    • Consists of generic, common, or usual terms;
    • Consists of geographic terms or demonyms;
    • Includes, is identical to, or is deceptively similar to the name of the country in Spanish;
    • Matches top-level domain names, second-level generic domain names, protocols, applications, or Internet terminology;
    • Consists of personal names, surnames, or appellations of a natural person unless it is a trademark granted by OCPI or a recognized personality;
    • Includes terms or expressions harmful to public security, integrity, ethics, morals, public decency, the economy, independence, or national sovereignty.

    Characters, IDNs, and length

    • Valid characters: letters of the Spanish alphabet (a–z), digits (0–9), the hyphen "-", and the accented Spanish characters á, é, í, ó, ú, ü, and ñ.
    • Domain names are case-insensitive.
    • Hyphen rules: must not begin or end with a hyphen and must not contain two consecutive hyphens "--".
    • Minimum length for a second-level or third-level domain: 3 characters (a minimum of 5 characters is recommended).
    • Maximum length: 63 characters.

    Operator

    CENIAInternet

    Whois

    % IANA WHOIS server
% for more information on IANA, visit http://www.iana.org
% This query returned 1 object

domain:       CU

organisation: CENIAInternet
address:      Industria y San Jose
address:      Capitolio Nacional
address:      La Habana CP 10200
address:      Cuba

contact:      administrative
name:         CU-DOM Administrative Contact
organisation: CENIAInternet
address:      Industria y San Jose
address:      Capitolio Nacional
address:      La Habana CP 10200
address:      Cuba
phone:        +537 2069380
fax-no:       +537 2048202
e-mail:       cu-admin@ceniai.inf.cu

contact:      technical
name:         CU-DOM Technical Contact
organisation: CENIAInternet
address:      Industria y San Jose
address:      Capitolio Nacional
address:      La Habana CP 10200
address:      Cuba
phone:        +537 8620377
fax-no:       +537 2048202
e-mail:       cu-tech@ceniai.inf.cu

nserver:      CU.CCTLD.AUTHDNS.RIPE.NET 193.0.9.70 2a13:27c0:30:0:0:0:0:70
nserver:      NS.CENIAI.NET.CU 169.158.128.136 2001:1340:1:128:0:0:0:136
nserver:      NS.DNS.BR 200.160.0.5 2001:12ff:0:a20:0:0:0:5
nserver:      NS2.CENIAI.NET.CU 169.158.128.88
nserver:      NS2.GIP.NET 204.59.1.222
nserver:      RIP.PSG.COM 147.28.0.39 2001:418:1:0:0:0:0:39

whois:        

status:       ACTIVE
remarks:      Registration information: http://www.nic.cu

created:      1992-06-03
changed:      2025-08-22
source:       IANA

    Registrars