the internet code for Saint Helena, Ascension, and Tristan da Cunha is - ".sh".
Information about .sh domains
There are estimated to be about 4,831 domains with .sh suffix (2014).
The Intended use for .sh domains is for entities connected with Saint Helena, Ascension, and Tristan da Cunha.
Actual use: Various uses; a few sites actually on Saint Helena but most elsewhere.
The .sh internet code was Introduced in 1997.
The Sponsoring Organisation for .sh domains is "Government of St. Helena".
Structure of .sh ccTLD: Registrations are taken directly at the second level or at third level beneath various 2nd-level labels.
Registration restrictions of .sh domain: 2nd-level registrant must have professional or academic qualification (apparently not actually enforced); 3rd level registrant must be resident on Saint Helena.
Government of St. Helena's contact details - See link
For .sh domain registration click on the following link - See link
For a whois search on .sh domains click on the following link - See link
You can see more details about the .sh ccTLD in Wikipedia - See link
Internet website in Saint Helena, Ascension, and Tristan da Cunha with .sh code (2014)
.sh code is used by less than 0.10% of all world's websites.
Most popular websites with .sh domain
Internet ipaddress and mailsevers
IP Addresses: 1,024.
Search for .sh domains on google Saint Helena, Ascension, and Tristan da Cunha - See link
SOURCES OF INFORMATION
Domain Count Statistics for TLDs - See link