I was curious myself, so I consulted Wikipedia.
From Wikipedia: "PN is the Internet country code top-level domain for Pitcairn Islands."
So evidently the descendants of the HMS Bounty mutineers have a representative in Congress.
Pitcairn Island is named for a son of the Major John Pitcairn who commanded the British troops on April 19, 1775, at the battle of Lexington. He was killed on June 17, 1775, in the battle of Bunker Hill.