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| Introduced | 24 July 1997 |
|---|---|
| TLD type | Country code top-level domain |
| Status | Active |
| Registry | HM Domain Registry |
| Sponsor | HM Domain Registry |
| Intended use | Entities associated with Heard Island and McDonald Islands |
| Actual use | Gets rare use, none of it related to Heard and McDonald Islands; sometimes used in Khanty-Mansiysk (Russia) |
| Registry website | HM Domain Registry |
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.hm is the Internet country code top-level domain (ccTLD) of the Heard and McDonald Islands, uninhabited islands in the southern Indian Ocean under the sovereign control of Australia. Although .hm gets a small amount of use, Australia uses the .aq domain (for Antarctica) for its sites related to the islands themselves. As a result, no .hm website is related to the location.