| español | spa-000 |
| Servicio Internacional de Rotación de la Tierra y Sistemas de Referencia | |
| Deutsch | deu-000 | Internationaler Erdrotationsdienst |
| English | eng-000 | International Earth Rotation and Reference Systems Service |
| français | fra-000 | International Earth Rotation and Reference Systems Service |
| magyar | hun-000 | Szökőmásodperc |
| italiano | ita-000 | International Earth Rotation and Reference Systems Service |
| русский | rus-000 | International Earth Rotation and Reference Systems Service |
| svenska | swe-000 | IERS |