Because there are no "1x2" call signs in "offshore" jurisdictions of the FCC (KP, KH, KL), Amateur Extra licensees in those areas have a very small selection of "2x1" callsigns available. For that and other reasons, the FCC callsign system will not assign a "lower 48" station a callsign with the two letter prefix xP, xH, or xL. If you have one of those calls because you once resided in KP, KL, or KH you may keep that call if you move to the "lower 48". This evening I was surprised to work a "club station" in W4-land with a "2X1" call from Alaska. On further digging, I found that the club originally had a 2X3 WL7xxx callsign. So at some time, this "STATE BICENTENNIAL" club in W4 land got themselves an Alaskan callsign, apparently with a mailing address in Alaska. I suppose the rules could be stretched so that is "technically" legal, but why would a club in Alabama go through such shenanigans to glom onto a callsign from Alaska? Ah, I get it! So you could later get a VANITY call from Alaska, AL2C, and tie it into your state bicentennial, as in "ALabama-2nd-Century! Meanwhile the small pool of 2x1 calls for real Alaska stations is diminished. For reference, here is the pertinent section of FCC procedure which covers this situation: "Each call sign has a one letter prefix (K, N, W) or a two letter prefix (AA-AL, KA-KZ, NA-NZ, WA-WZ) and a one, two, or three letter suffix separated by a numeral (0-9) indicating the geographic region. Two letter prefixes that are designated for regions 11-13 are not available in regions 1-10."