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    • .dk

    Country-code top-level domainsDNSSEC

    Overview

    • .dk is the country-code top-level domain (ccTLD) for Denmark.
    • Managed and supervised by Punktum dk (operated under Dansk Internet Forum, DIFO).
    • Registrations are permitted at the second level (for example: company.dk, lastname.dk).
    • The zone supports Danish and several extended characters (including æ, ø, å, ö, ä, ü, é, ß).
    • As of 2022-12-15 there were 1,460,530 registered .dk domains.

    History

    • Delegated and added to the root zone on 14 July 1987 (registered at SRI-NIC).
    • Early administration was handled by the Danish UNIX User Group (DKUUG) and DIKU via DKnet; DKnet name in use since at least 1985.
    • Mid-1988: DKnet connected to DENet (the government-sponsored research network).
    • 15 February 1996: DKnet ApS and .dk domain management were sold to Tele Danmark (TDC) for 20 million DKK, triggering industry concern over conflict of interest.
    • 1996–1998: Industry group Foreningen af Internetleverandører (FIL) negotiated administration arrangements; loosening of registration restrictions on 15 January 1997 produced a rapid surge in registrations.
    • 1 July 1999: Dansk INTERNET Forum (DIFO) was established; DIFO and external investors bought Punktum dk (then DK Hostmaster) in December 1999.
    • 4 April 2008: Punktum dk began offering IPv6 glue records for second-level domains.
    • 23 July 2010: The .dk zone was signed using DNSSEC (NSEC3); corresponding DS records were added to the root shortly after.
    • April 2023: DK Hostmaster changed its public name to Punktum dk.

    Usage and Audience

    • .dk is widely used and very popular within Denmark.
    • Typical registrants include companies, organizations and private individuals seeking a Danish domain presence.
    • Most registrations are taken at the second level; third-level names are allocated by second-level domain owners and are not generally promoted by the registry.

    Registration Rules

    • Eligibility: Anyone may register a .dk domain name.
    • Registration process: New .dk names must be applied for via an approved registrar. An applicant may have the registrar manage the domain or have it managed directly by Punktum dk.
    • Structure: Registrations are allowed at the second level.
    • Characters allowed:
      • All Danish letters (including æ, ø, å).
      • The letters ö, ä, ü, é and ß.
      • Numbers 0–9 and the hyphen (-).
      • A hyphen may not be the first or last character.
      • A domain name cannot contain two leading characters followed by two hyphens (example: a2--punktum.dk is not allowed).
    • Restrictions and suspension: The registry lists grounds on which it may suspend a domain name, including cases involving obvious risk of user confusion (typo-squatting), lack of relevant rights by the registrant, or patterns of registrations creating confusion; suspension criteria are defined in Punktum dk's terms and conditions.
    • Fees and transfers:
      • Historically transfers were free; a transfer fee of 50 DKK was introduced effective 1 January 2019.
      • As of 1 April 2023 the yearly period fee and the transfer fee are set at 70 DKK.

    Notable Cases or Examples

    • Oldest still-registered .dk domains first created in 1987 include: dkuug.dk, diku.dk, bk.dk, ibt.dk, ifad.dk, lego.dk, mainz.dk, and nordita.dk.
    • Technical milestones:
      • IPv6 glue records available since 4 April 2008.
      • DNSSEC signing applied to the .dk zone on 23 July 2010 (NSEC3).
    • Administrative milestone: the registry operator rebranded from DK Hostmaster to Punktum dk in April 2023.

    Operator

    Dansk Internet Forum

    Whois

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

domain:       DK

organisation: Dansk Internet Forum
address:      Ørestads Boulevard 108, 11th floor
address:      Copenhagen DK-2300
address:      Denmark

contact:      administrative
name:         Punktum dk Administrative Contact
organisation: Punktum dk A/S
address:      Ørestads Boulevard 108, 11th floor
address:      Copenhagen DK-2300
address:      Denmark
phone:        +45 3364 6060
fax-no:       +45 3364 6066
e-mail:       tld2019admin@punktum.dk

contact:      technical
name:         Punktum dk Technical Contact
organisation: Punktum dk A/S
address:      Ørestads Boulevard 108, 11th floor
address:      Copenhagen DK-2300
address:      Denmark
phone:        +45 3364 6060
fax-no:       +45 3364 6066
e-mail:       tld2019tech@punktum.dk

nserver:      B.NIC.DK 193.163.102.222 2a01:630:0:80:0:0:0:53
nserver:      C.NIC.DK 185.159.199.45 2620:10a:80ac:0:0:0:0:45
nserver:      H.NIC.DK 2a00:1b18:1:2:0:0:0:53 46.30.126.214
nserver:      L.NIC.DK 130.226.213.138 2001:878:0:e000:82:e2:d5:8a
nserver:      S.NIC.DK 194.0.28.7 2001:678:2c:0:194:0:28:7
nserver:      T.NIC.DK 185.43.134.16 2001:148f:fffd:0:0:0:0:16
ds-rdata:     20109 13 2 5c86a68ae2c3ab74182b3ad0749b46e55f892b835f9578cfa12f9093fb252bd0

whois:        whois.punktum.dk

status:       ACTIVE
remarks:      Registration information: https://punktum.dk/

created:      1987-07-14
changed:      2025-06-17
source:       IANA

    Registrars