200-299
- 200: Beersel Hills Observatory
- 201: Jonathan B. Postel Observatory, Bareggio, Italy
- 202: Tamaris Observatoire, La Seyne sur Mer
- 203: GiaGa Observatory
- 204: Schiaparelli Observatory
- 205: Obs. Casalecchio di Reno, Bologna
- 206: Haagaar Observatory, Eina
- 207: Osservatorio Antonio Grosso
- 208: Rivalta
- 209: Asiago Observatory, Cima Ekar-ADAS (Asiago-DLR Asteroid Survey)
- 210: Alma-Ata
- 211: Scandicci
- 212: Observatorio La Dehesilla
- 213: Observatorio Montcabre
- 214: Garching Observatory
- 215: Buchloe
- 216: Observatoire des Côtes de Meuse, France
- 217: Assah
- 218: Hyderabad
- 219: Japal-Rangapur
- 220: Vainu Bappu Observatory, Kavalur, India
- 221: IAS Observatory, Hakos
- 222: Yerres-Canotiers
- 223: Madras, India (Indian Institute of Astrophysics, Madras Observatory)
- 224: Ottmarsheim
- 225: Northwood Ridge Observatory, Northwood, New Hampshire, USA
- 226: Guido Ruggieri Observatory, Padua
- 227: OrbitJet Observatory, Colden
- 228: Bruno Zugna Observatory, Trieste
- 229: G. C. Gloriosi Astronomical Observatory, Salerno
- 230: Mt. Wendelstein Observatory
- 231: Vesqueville
- 232: Masquefa Observatory
- 233: Sauro Donati Astronomical Observatory, San Vito
- 234: Coddenham Observatory
- 235: CAST Observatory, Talmassons
- 236: Tomsk
- 237: Baugy
- 238: Grorudalen Optical Observatory
- 239: Michael Adrian Observatory, Trebur
- 240: Herrenberg Sternwarte
- 241: Schaerding
- 242: Varennes
- 243: Umbrella Observatory
- 244: Geocentric Occultation Observation
- 245: Spitzer Space Telescope (space observatory)
- 246: Kleť Observatory-KLENOT
- 247: Roving Observer
- 248: Hipparcos (space observatory - defunct)
- 249: SOHO (space observatory)
- 250: Hubble Space Telescope (space observatory)
- 251: Arecibo Observatory, Puerto Rico, USA
- 252: Goldstone DSS 13, Fort Irwin, California, USA (Goldstone Deep Space Communications Complex)
- 253: Goldstone DSS 14, Fort Irwin, California, USA (Goldstone Deep Space Communications Complex)
- 254: Haystack, Westford, Massachusetts, USA (Haystack Observatory)
- 255: Evpatoria, Ukraine
- 256: Green Bank Telescope, West Virginia, USA
- 257: Goldstone DSS 25, Fort Irwin, California, USA (Goldstone Deep Space Communications Complex)
- 260: Siding Spring Observatory-DSS, Siding Spring, New South Wales, Australia (Digital Sky Survey)
- 261: Palomar Mountain-DSS, California, USA (Palomar Observatory - Digital Sky Survey)
- 262: European Southern Observatory, La Silla-DSS, Chile (La Silla Observatory - Digital Sky Survey)
- 285: Flammarion Observatory, Juvisy
- 286: Yunnan Observatory
- 290: Mt. Graham-VATT, Arizona, USA (Vatican Advanced Technology Telescope)
- 291: LPL/Spacewatch II
- 292: Burlington, New Jersey, USA
- 293: Burlington remote site, New Jersey, USA
- 294: Astrophysical Obs., College of Staten Island, Staten Island, New York, USA
- 295: Catholic University Observatory, Washington D.C., USA
- 296: Dudley Observatory (after 1893), Schenectady, New York, USA
- 297: Middlebury, Vermont, USA (Middlebury College Observatory)
- 298: Van Vleck Observatory, Middletown, Connecticut, USA
- 299: Bosscha Observatory, Lembang, Indonesia
Read more about this topic: List Of Observatory Codes