D00-D99
- D00: ISON-Kislovodsk Observatory, Kislovodsk, Russia
- D01: Andean Northern Observatory, Nummi-Pusula, Finland
- D02: Observatori Petit Sant Feliu, Sant Feliu de Llobregat, Catalonia, Spain
- D03: Rantiga Osservatorio, Tincana, Carpineti, Italy
- D04: Krasnodar, Russia
- D14: Nanchuan Observatory, Guangzhou, China
- D16: Po Leung Kuk Observatory, Tuen Mun
- D17: Hong Kong
- D18: Mt. Guizi Observatory, China
- D19: Hong Kong Space Museum, Tsimshatsui, Hong Kong, China
- D20: Zadko Observatory, Wallingup Plain
- D21: Shenton Park
- D22: UWA Observatory, Crawley, Western Australia, Australia
- D24: LightBuckets Observatory, Pingelly', Western Australia, Australia
- D25: Tzec Maun Observatory, Pingelly', Western Australia, Australia
- D29: Purple Mountain Observatory, XuYi Station
- D32: JiangNanTianChi Observatory, Mt. Getianling
- D33: Kenting Observatory, Checheng, Taiwan
- D34: Kenting Observatory, Hengchun
- D35: Lulin Observatory
- D36: Tataka, Mt. Yu-Shan National Park
- D39: Shandong University Observatory, Weihai
- D44: Ishigakijima Astronomical Observatory
- D54: MASTER-II Observatory, Blagoveshchensk
- D55: Kangwon Science High School Observatory, Ksho
- D57: Gimhae Astronomical Observatory, Uhbang-dong
- D58: KSA SEM Observatory, Danggam-dong
- D61: Suntopia Marina, Sumoto
- D62: Miyaki-Argenteus
- D70: Tosa
- D74: Nakagawa (Anan Science Center Nakagawa Observatory, formerly Nakagawa Science Center Nakagawa Observatory, Japan)
- D78: Iga-Ueno
- D79: YSVP Observatory, Vale Park, SA, Australia
- D80: Gumma Astronomical Observatory
- D81: Nagano
- D82: Wallaroo
- D83: Miwa
- D84: Hallet Cove
- D85: Ingle Farm
- D86: Penwortham
- D87: Brooklyn Park
- D88: Hiratsuka
- D89: Yamagata (Yamagata Astronomical Observatory)
- D90: RAS Observatory, Moorook, SA, Australia
- D91: Adati
- D92: Osaki, Japan
- D93: Sendai Astronomical Observatory, Japan
- D94: Takanezawa, Tochigi, Japan
- D95: Kurihara
- D96: Tzec Maun Observatory, Moorook, SA, Australia
- D97: Berri, SA, Australia'
Read more about this topic: List Of Observatory Codes