| Abbreviation | Definition |
|---|---|
| UNIW | Vanavara, Russia |
| UNK | Unalakleet, Alaska USA |
| UNKE | Kezhma, Russia |
| UNKK | Krasnoyarsk, Russia |
| UNKL | Krasnoyarsk, Russia |
| UNKY | Kyzyl, Russia |
| UNLL | Kolpashevo-Severny, Russia |
| UNLW | Novy Vasyugan, Russia |
| UNN | Ranong, Thailand |
| UNNN | Novosibirsk-Tolmachevo, Russia |
| UNNT | Novosibirsk, Russia |
| UNOO | Omsk, Russia |
| UNR | Underkhaan, Mongolia |
| UNT | Unst, Shetland Islands, Scotland, UK |
| UNU | Juneau, Wisconsin |
| UNV | University Park Airport, State College, Pennsylvania USA |
| UNWW | Novokuznetsk, Russia |
| UOAA | Amderma, Russia |
| UODD | Dikson, Russia |
| UOHH | Khatanga, Russia |