Select a site:
| Server | Instrument SN | Location | County | Country | Responsable |
| ESRBUR | SP01ARS | Aras de los Olmos | Valencia | Spain | V. Estelles |
| ESRBCN | SP01BCN SP02BCN | Barcelona | Barcelona | Spain | J. Lorente |
| ESRBUR | SP01BUR SP02BUR | Burjassot | Valencia | Spain | V. Estelles |
| ESRPLY | UK01PLY UK02PLY | Plymouth | Devon | United Kingdom | T. Smyth |
| ESRSPC | IT02SPC | San Pietro Capofiume | Bologna | Italy | V. Vitale |
| ESRTOR | IT02TOR | Tor Vergata | Rome | Italy | M. Campanelli |