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The Sudan Internet Society is the registry responsible for domain names in Sudan, operating under the authority of the Telecommunications and Post Regulatory Authority (TPRA). The .SD country-code top-level domain (ccTLD) was introduced in 1997.
Today, the .SD top-level domain remains relatively small, with only a few thousand active registrations, mainly serving local businesses, government institutions, and organizations. The registry manages standard second-level domains like com.sd and gov.sd.
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