Second-Level Domains

In the Domain Name System (DNS) hierarchy, a second-level domain (SLD) is a domain that is directly below a top-level domain (TLD). For example, in example.com, example is the second-level domain of the .com TLD.Second-level domains commonly refer to the organization that registered the domain name with a domain name registrar. Some domain name registries introduce a second-level hierarchy to a TLD that indicates the type of organization intended to register an SLD under it. For example, in the .uk namespace a college or other academic institution would register under the .ac.uk ccSLD, while companies would register under .co.uk.
Posts about Second-Level Domains
  • .now and .realestate will be restricted, but Donuts keeps .tires open

    … withdrawn their bids. Amazon’s application for .now envisages a closed registry in which all the second-level domains belong to the company’s intellectual property department. Also this week, the NAR, which already has the dot-brand .realtor under its belt, beat Donuts, Minds + Machines and Uniregistry to the complementary generic .realestate…

    Kevin Murphy/ DomainIncite- 4 readers -
  • .nz second-level names now available

    … The New Zealand Domain Name Commission has started making second-level domains under .nz available for the first time. Like .uk, which opened up the second level this year, .nz names have previously only been available at the third level, under .co.nz, .net.nz and over a dozen other extensions. But from this week, existing registrants…

    Kevin Murphy/ DomainIncite- 2 readers -
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