Initially, it was managed by the Sudan Internet Society (SIS), which played a key role in establishing the domain's infrastructure.

On December 20, 2002, the Internet Assigned Numbers Authority (IANA) formally redelegated the management of .sd to the Sudanese National Telecommunications Corporation (NTC).

[1] In 2018, the Internet Society collaborated with stakeholders in Sudan to organize a DNSSEC deployathon in Khartoum.

The deployathon marked a significant step in Sudan's efforts to modernize its internet infrastructure and align with global best practices.

[2] A new internationalized country code top-level domain string using Arabic letters, سودان, was reserved for Sudan in November 2012.