B00-B99
- B00: Savigny-le-Temple
- B01: Taunus Observatory, Frankfurt, Germany
- B02: Kielce
- B03: Alter Satzberg, Vienna
- B04: Saint-Barthelemy Observatory
- B05: Ka-Dar Observatory, Barybino, Moscow region
- B06: Montseny Astronomical Observatory, Spain
- B07: Camorino
- B08: San Lazzaro di Savena
- B09: Capannoli, Italy Pietro Dora Vivarelli ASA
- B10: Observatoire du Mas des Gres, Moydans (LightBuckets as of November 2011)
- B11: Osservatorio Cima Rest, Imola
- B12: The Koschny Observatory, Noordwijkerhout
- B13: Osservatorio di Tradate
- B14: Ca del Monte
- B15: Inastars Observatory, Potsdam (since 2006)
- B16: 1st Moscow Gymnasium Observatory, Lipki
- B17: AZT-8 Evpatoria
- B18: Terskol
- B19: Observatori Iluro, Mataró
- B20: Observatori Carmelita, Tiana
- B21: Gaisberg Observatory (Sternwarte Gaisberg), Schaerding (Schärding, Austria)
- B22: Observatori d'Àger, Barcelona, Spain
- B23: Fiamene, Italy
- B24: Cesson
- B25: Catania
- B26: Observatoire des Terres Blanches, Reillanne
- B27: Picard Observatory, St. Veit
- B28: Mandi Observatory, Pagnacco, Italy
- B29: L'Ampolla Observatory, Tarragona
- B30: Szamotuly-Galowo, Poland
- B31: Southern African Large Telescope (SALT), Sutherland
- B32: Observatory Gelenau(Germany)
- B33: Libbiano Observatory, Peccioli - AAAV
- B34: Green Island Observatory, Geçitkale, Cyprus
- B35: Bareket observatory, Macabim, Israel.
- B36: Redshed Observatory, Kallham
- B37: Obs. de L' Ametlla del Valles, Barcelona
- B38: Santa Mama
- B39: Tradate
- B40: Skylive Observatory, Catania, Italy (Gruppo Astrofili Catanesi)
- B41: Zlin Observatory
- B42: Vitebsk
- B43: Hennef
- B44: Eygalayes, France
- B45: Narama
- B46: Sintini Observatory, Argenta
- B47: Metsala Observatory, Espoo
- B48: Bocholt
- B49: Paus Observatory, Sabadell
- B50: Corner Observatory, Durmersheim
- B51: Vallauris
- B52: Observatorio El Far
- B53: Casal Lumbroso, Rome
- B54: Àger, Spain
- B55: Comeglians
- B56: Observatorio Sant Pere, Mataró
- B57: Laietania Observatory, Parets del Vallès
- B58: Polaris Observatory, Budapest
- B59: Borken
- B60: Deep Sky Observatorium, Bad Bentheim
- B61: Valldoreix Obs.,Sant Cugat del Valles
- B62: Brelingen
- B63: Solaris Observatory, Luczanowice
- B64: Slope Rock Observatory, Hyvinkaa
- B65: Komakallio Observatory, Kirkkonummi
- B66: Osservatorio Astronomico Naturalistico A. Zanassi di Casasco
- B67: Sternwarte Mirasteilas, Falera, Switzerland
- B68: Mount Matajur Observatory
- B69: Owls and Ravens Observatory, Holzgerlingen
- B70: Sant Celoni
- B71: Observatorio El Vendrell
- B72: Soerth
- B73: Mauren Valley Observatory, Holzgerlingen
- B74: Santa María de Montmagastrell
- B75: Stazione Astronomica Betelgeuse, Magnago
- B76: Sternwarte Schönfeld, Dresden
- B77: Schafmatt Observatory, Aarau
- B78: Astrophoton Observatory, Audorf
- B79: Marana Observatory
- B80: Osservatorio Astronomico Campomaggiore
- B81: Caimari
- B82: Maidbronn
- B83: Gières
- B84: Cyclops Observatory, Oostkapelle
- B85: Beilen Observatory
- B86: Sternwarte Hagen, Germany
- B87: Banyoles
- B88: Bigmuskie Observatory, Mombercelli
- B89: Observatori Astronòmic de Tiana
- B90: Malina River Observatory, Povoletto
- B91: Bollwiller
- B92: Chinon
- B93: Hoogeveen
- B94: Petrozavodsk, Russia
- B95: Achternholt
- B96: Brixiis Observatory, Kruibeke
- B97: Sterrenwacht Andromeda, Meppel
- B98: Siena
- B99: Santa Coloma de Gramenet
Read more about this topic: List Of Observatory Codes