|Introduced||6 March 1997|
|TLD type||Country code top-level domain|
|Registry||Sudan Domains Registry|
|Sponsor||Sudan Internet Society|
|Intended use||Entities connected with Sudan|
|Actual use||Not very much used|
|Registration restrictions||Generally none, applications screened by registry; may be limited based on which second-level category they are under|
|Structure||Names are registered at second level or at third level beneath various second-level categories|
|Documents||ICANN agreement; Terms and conditions|
.sd is the Internet country code top-level domain (ccTLD) for Sudan.
A new top domain string using Arabic letters was reserved for Sudan in November, 2012; the top domain is سودان.