Generic Top-Level Domain (gTLD) Registry Agreements

gTLD Registry Agreements establish the rights, duties, liabilities, and obligations ICANN requires of registry operators to run gTLDs.

.PRO Agreement Appendix 6 | List of Reserved TLD Strings

ICANN Logo .PRO Agreement Appendix 6
List of Reserved TLD Strings

(22 April 2010)

Registry Operator shall reserve names formed with the following labels from initial (i.e. other than renewal) registration within the TLD:

A. Labels Reserved at All Levels. The following names shall be reserved at the second level and at all other levels within the TLD at which Registry makes registrations:

ICANN-related names:

  • aso
  • gnso
  • icann
  • internic
  • ccnso

IANA-related names:

  • afrinic
  • apnic
  • arin
  • example
  • gtld-servers
  • iab
  • iana
  • iana-servers
  • iesg
  • ietf
  • irtf
  • istf
  • lacnic
  • latnic
  • rfc-editor
  • ripe
  • root-servers

B. Additional Second-Level Reservations. In addition, the following names shall be reserved at the second level:

  • All single, two-character, and three-character labels that were previously reserved by the Registry in the Registry Agreement may be allocated through ICANN accredited registrars, based upon implementation of a Phased Allocation Program as follows:

    The domain names included within the scope of the Phased Allocation Program shall be limited to one, two, and three character .PRO domain names. RegistryPro reserves the right to not allocate all one, two and three character .PRO domain names. Pursuant to the Phased Allocation Program, RegistryPro may elect to allocate the domain names via the following processes: 1) request for proposals based on evaluation criteria, 2) auction, or 3) first come, first served registration.

    The domain names allocated via the Phased Allocation Program are an exception to the Maximum Service Fee described in Section 7.3 (a) of the .PRO Registry Agreement.

C. Tagged Domain Names. All labels with hyphens in the third and fourth character positions (e.g., "bq--1k2n4h4b" or "xn--ndk061n")

D. Second-Level Reservations for Registry Operations. The following names are reserved for use in connection with the operation of the registry for the .pro TLD:

  • nic
  • whois
  • www

E. Names Reserved by Registry Operator. The registry may directly reserve domain names within the .pro domain for its own use in operating the registry and providing Registry Services under the Registry Agreement. The following is an initial list of such domain names, which may be revised or supplemented from time to time upon written notice by RegistryPro to ICANN, and consent by ICANN.