O'Byrne Ferry
      Code: MOYM
       37.9000 -120.5673 176.0
       Network: MNLO
       Status: Open

O'Connell Ranch
      Code: OCR
       36.9172 -121.5077 98.0
       Network: MNLO
       Status: Open

O'Higgins
      Code: OHC
       -63.3333 -57.9000 20.0
       Network: SAN
       Status: Open

Oahu Island
      Code: OA-IS
       21.4575 -157.9964 183.0
       Network: LRSM
       Status: Closed

Oak Flat
      Code: WOFM
       35.5357 -118.7125 1341.0
       Network: PAS
       Status: Open

Oak Grove
      Code: OKG
       35.6260 -89.8350 129.0
       Network: SLM
       Status: Closed

Oak Harbor
      Code: OHW
       48.3233 -122.5318 54.0
       Network: SEA
       Status: Open

Oak Ridge
      Code: ORT
       35.9095 -84.3048 370.0
       Status: Open

Oak Springs Butte
      Code: OB-NV
       37.2358 -116.0525 1731.0
       Network: LRSM
       Status: Closed

Oak Springs Butte
      Code: OB2NV
       37.2253 -116.0578 1542.0
       Network: LRSM
       Status: Closed

Oak Springs Butte
      Code: OB3NV
       37.2325 -116.0542 1609.0
       Network: LRSM
       Status: Closed

Oakfield
      Code: OAK
       43.0570 -78.3372 259.0
       Network: PAL
       Status: Closed

Oakhill (Concord)
      Code: ONH
       43.2792 -71.5056 280.0
       Network: CAM
       Status: Open

Oamaru
      Code: OMZ
       -45.0706 170.9147 95.0
       Network: WEL
       Status: Closed

Oasis
      Code: OAS
       -23.2006 -69.7139 1340.0
       Network: GUC
       Status: Open

Oasis Bungera
      Code: OBA
       -66.1667 100.7333 24.0
       Status: Closed

Oaxaca
      Code: OAX
       17.0203 -96.7628 1570.0
       Network: UNM
       Status: Closed

Oaxaca
      Code: OXX
       17.0817 -96.7233 1730.0
       Network: UNM
       Status: Open

Obama
      Code: SWAJ
       32.6775 130.2022 257.0
       Network: SHV
       Status: Reserved

Oban
      Code: OBZ
       -46.9050 168.1153 26.0
       Network: WEL
       Status: Closed

Obara
      Code: JAO
       35.2667 137.2583 600.0
       Network: JMA
       Status: Open

Obergurgl
      Code: OGA
       46.8678 11.0253 1934.0
       Network: FUR
       Status: Open

Oberlin
      Code: OBK
       39.9288 -100.4388 792.0
       Network: KGS
       Status: Closed

Obertriebel
      Code: TRIB
       50.3517 12.1370 510.0
       Network: LEI
       Status: Open

Obigarm
      Code: OBG
       38.7167 69.7167 1350.0
       Network: TAJK
       Status: Open

Obihiro
      Code: OBI
       42.9200 143.2217 40.0
       Network: JMA
       Status: Open

Obihiro City
      Code: IWN
       42.6705 143.0462 235.0
       Network: HSS
       Status: Open

Obispado Ponce
      Code: OBIP
       18.0428 -66.6061 102.6
       Network: RSPR
       Status: Open

Obninsk
      Code: OBN
       55.1138 36.5687 130.0
       Network: OBN
       Status: Open

Obock
      Code: OBO
       11.9869 43.2925 50.0
       Network: ARO
       Status: Open

Observatoire Midi-Pyrenees, Toulouse, France
      Code: OMPT
      
       Status: Network/Other

Observatorio Astronomico de Quito
      Code: OAQ
       -0.2161 -78.4992 2819.0
       Network: QUI
       Status: Open

Obsidian Butte
      Code: OBB
       33.1673 -115.6367 -59.0
       Network: PAS
       Status: Closed

Ocós
      Code: OCG
       14.5655 -92.1217 8.0
       Network: GCG
       Status: Closed

Ocós 2
      Code: OC2
       14.5605 -92.1862 5.0
       Network: GCG
       Status: Closed

Ocaña
      Code: OCAC
       8.2388 -73.3193 1264.0
       Network: RSNC
       Status: Open

Ocean Bottom Seismometer
      Code: OBS
       38.0920 -124.5440 -3840.0
       Network: PAL
       Status: Closed

Ocean Falls
      Code: OFB
       52.3540 -127.6843 75.0
       Network: OTTR
       Status: Open

Oceanview
      Code: VEW
       32.7177 -79.9415 -60.0
       Network: USGS
       Status: Closed

Oceanview Estates
      Code: OVEH
       19.1535 -155.7653 1378.0
       Network: HVO
       Status: Open

Ochomogo
      Code: OCM
       9.8948 -83.9608 1660.0
       Network: HDC
       Status: Open

Ocozocuautla
      Code: OZC
       16.7850 -93.3730 864.0
       Network: IIM
       Status: Open

Octopus Mountain
      Code: OCWA
       47.7489 -124.1781 671.0
       Network: NEIC
       Status: Closed

Octopus West
      Code: OOW
       47.7367 -124.1894 743.0
       Network: SEA
       Status: Open

Ocumarito
      Code: OCUV
       10.1164 -66.8000 248.0
       Network: CAR
       Status: Open

Od Khalfella
      Code: OKL
       32.2030 -9.1390 122.0
       Network: CNRM
       Status: Closed

Oda
      Code: JJO
       35.1683 132.5033 60.0
       Network: JMA
       Status: Closed

Odare
      Code: ODAN
       26.8600 87.3900 2045.0
       Network: DMN
       Status: Open

Odawara
      Code: JOD
       35.2648 139.0908 360.0
       Network: JMA
       Status: Closed

Odawara 2
      Code: JOD2
       35.2632 139.0882 380.0
       Network: JMA
       Status: Open

Odda
      Code: ODD
       59.9500 6.6670 630.0
       Network: BER
       Status: Closed

Odda
      Code: ODD1
       59.9120 6.6280 684.0
       Network: BER
       Status: Open

Odesa (Odessa)
      Code: NE56
       46.6760 30.8990 30.0
       Network: NARS
       Status: Open

Odessa
      Code: NE56
       46.6760 30.8990 30.0
       Network: NARS
       Status: Open

Odessa
      Code: ODS
       47.3067 -118.7450 524.0
       Network: SEA
       Status: Open

Odessa Site #2
      Code: OD2
       47.3910 -118.7107 590.0
       Network: SEA
       Status: Open

Odiongan
      Code: OTRP
       12.3620 122.0210 120.0
       Network: PIVS
       Status: Open

Odobesti
      Code: ODB
       45.7747 27.0561 140.0
       Network: BUC
       Status: Open

Ofenpass
      Code: FUORN
       46.6202 10.2635 2335.0
       Network: ZUR
       Status: Open

Office National des Forêts
      Code: ONF
       43.0950 -0.7160 30.0
       Network: PAR
       Status: Open

Offida
      Code: OFFI
       42.9350 13.6857 320.0
       Network: ROM
       Status: Open

Oficina Alemania
      Code: OFA
       -25.1525 -69.9500 1000.0
       Network: GUC
       Status: Open

Ofunai
      Code: OFUJ
       39.0802 141.6690 180.0
       Network: JMA
       Status: Open

Ofunato
      Code: OFU
       39.0617 141.7183 38.0
       Network: JMA
       Status: Open

Ofunato Outpost (Ofunai)
      Code: OFUJ
       39.0802 141.6690 180.0
       Network: JMA
       Status: Open

Oga
      Code: JOG
       39.9043 139.7770 270.0
       Network: JMA
       Status: Closed

Oga
      Code: OGH
       39.9050 139.7769 354.0
       Network: TOH
       Status: Open

Oga 2
      Code: JOG2
       39.9140 139.7927 140.0
       Network: JMA
       Status: Open

Ogallala
      Code: OGNE
       40.9451 -102.0330 1054.0
       Network: NEIC
       Status: Open

Ogasawara
      Code: OGS
       27.0568 142.2029 20.0
       Network: ERIJ
       Status: Open

Ogden Bay
      Code: OGU
       41.2750 -111.9440 1506.0
       Network: SLC
       Status: Closed

Ogdensburg
      Code: OGD
       41.0875 -74.5958 -367.0
       Network: PAL
       Status: Closed

Ogeu
      Code: OGE
       43.1685 -0.4733 440.0
       Network: OMPT
       Status: Closed

Ogyalla
      Code: HRB
       47.8736 18.1928 115.0
       Network: BRA
       Status: Open

Ohata
      Code: JOT
       41.3820 141.0482 80.0
       Network: JMA
       Status: Open

Ohazama
      Code: JOM
       39.4730 141.2923 210.0
       Network: JMA
       Status: Open

Ohdaira
      Code: OHD
       42.5262 140.8425 250.0
       Network: HSS
       Status: Reserved

Ohio Geological Survey, Columbus
      Code: OGSO
       40.0568 -82.9654 268.0
       Network: OGSO
       Status: Open

Ohio State University
      Code: OSUO
      
       Network: OGSO
       Status: Reserved

Ohio State University--Lima
      Code: OSLO
       40.7390 -84.0250 284.0
       Network: OGSO
       Status: Open

Ohio State University--Mansfield
      Code: OSMO
       40.7970 -82.5790 420.0
       Network: OGSO
       Status: Open

Ohio University
      Code: OUAO
       39.3220 -82.0970 217.0
       Network: OGSO
       Status: Open

Ohira
      Code: OHJ
       36.3600 139.6924 250.0
       Network: CDPJ
       Status: Reserved

Ohlone
      Code: OHLN
       38.0064 -122.2730 -196.8
       Network: BRK
       Status: Open

Ohmine
      Code: OMJ
       36.6677 138.1820 506.0
       Network: ERIJ
       Status: Open

Ohrid
      Code: OHR
       41.1114 20.7989 739.0
       Network: SKO
       Status: Open

Oil Point
      Code: OPT
       59.6528 -153.2297 625.0
       Network: GIA
       Status: Open

Oio
      Code: OIZ
       -39.0467 175.3925 470.0
       Network: WEL
       Status: Open

Oishiyama
      Code: OIS
       34.1053 135.3273 678.0
       Network: ERIJ
       Status: Closed

Oishiyama A
      Code: OIA
       34.1031 135.3201 756.0
       Network: ERIJ
       Status: Open

Oishiyama B
      Code: OIB
       34.0998 135.3208 776.0
       Network: ERIJ
       Status: Open

Oishiyama C
      Code: OIC
       34.0989 135.3167 776.0
       Network: ERIJ
       Status: Open

Oita (Ooita)
      Code: OIT
       33.2333 131.6233 6.0
       Network: JMA
       Status: Open

Oita 2
      Code: OIT2
       33.2782 131.4518 460.0
       Network: JMA
       Status: Open

Oiwake
      Code: OIW
       36.3400 138.5517 1001.0
       Status: Closed

Ojén
      Code: OJEN
       36.0993 -5.5407 816.0
       Network: SFS
       Status: Closed

Ojców
      Code: OJC
       50.2195 19.7984 391.0
       Network: WAR
       Status: Open

Ojo de Agua
      Code: OJOS
       13.8633 -89.2367 645.0
       Network: CIG
       Status: Closed

Ok Tedi (Tabubil)
      Code: OKTD
       -5.3484 141.2917 518.0
       Network: PMG
       Status: Open

Okabe
      Code: OKB
       34.9500 138.2538 -30.0
       Network: CDPJ
       Status: Open

Okamoto-Ura
      Code: KV09
       32.0183 130.7878 280.0
       Network: ERIJ
       Status: Reserved

Okayama
      Code: OKA
       34.6817 133.9150 5.0
       Network: JMA
       Status: Closed

Okayama
      Code: OKA1
       34.6583 133.9183 17.0
       Network: JMA
       Status: Open

Okayama 2
      Code: OKA2
       34.6417 133.9517 77.0
       Network: JMA
       Status: Open

Okha
      Code: OKH
       53.5500 142.9333 24.0
       Network: SKHL
       Status: Open

Okhotsk
      Code: OHTR
       59.3586 143.3308 40.0
       Network: NERS
       Status: Open

Oki
      Code: SAI
       36.2018 133.3363 27.0
       Network: JMA
       Status: Open

Okijuku
      Code: OKI
       36.0500 140.2500 0.0
       Status: Closed

Oklahoma City
      Code: OCO
       35.5240 -97.4740 351.0
       Network: TUL
       Status: Open

Oklahoma Geophysical Observatory
      Code: TUL
       35.9106 -95.7925 256.0
       Network: TUL
       Status: Open

Okmok Cone D
      Code: OKCD
       53.4303 -168.1123 459.0
       Network: USAV
       Status: Open

Okmok Cone E
      Code: OKCE
       53.4270 -168.1643 515.0
       Network: USAV
       Status: Open

Okuchi
      Code: JZO
       32.1400 130.5985 440.0
       Network: JMA
       Status: Open

Okuno
      Code: OKN
       34.9319 139.0706 140.0
       Network: ERIJ
       Status: Open

Okura
      Code: JOU
       38.3655 140.6640 390.0
       Network: JMA
       Status: Open

Okushiri
      Code: OKS
       42.0650 139.4433 35.0
       Network: JMA
       Status: Open

Okushiri--Matsue
      Code: JOSM
       42.0827 139.4752 79.0
       Network: JMA
       Status: Open

Okushiri-to
      Code: JOR
       42.0667 139.4450 33.0
       Network: JMA
       Status: Closed

Okuyama (Fujigawa)
      Code: OKY
       35.2273 138.4212 620.0
       Network: ERIJ
       Status: Open

Olbia
      Code: OLB
       40.9267 9.4956 5.0
       Status: Reserved

Old Faithful
      Code: YFT
       44.4513 -110.8358 2292.0
       Network: SLCY
       Status: Open

Old Faithful
      Code: YPOF
       44.4525 -110.8413 2260.0
       Network: SLCY
       Status: Closed

Old Graveyard Slough
      Code: OGTN
       36.4200 -89.4860 91.0
       Network: SLM
       Status: Closed

Old Harbor
      Code: OHAK
       57.2225 -153.2875 77.5
       Network: PMR
       Status: Open

Old Mammoth Mine
      Code: OMM
       37.6185 -118.9923 2750.0
       Network: REN
       Status: Open

Old Woman Plateau
      Code: OWUT
       38.7800 -111.4237 2568.0
       Network: SLC
       Status: Open

Olema
      Code: NOLM
       38.0397 -122.7925 30.0
       Network: MNLO
       Status: Open

Olema
      Code: OLC
       38.0397 -122.7925 30.0
       Network: MNLO
       Status: Closed

Olintepeque
      Code: OLG
       14.8977 -91.5077 2855.0
       Network: GCG
       Status: Closed

Olkaria
      Code: OLK
       -0.8880 36.3240 1751.0
       Network: NAI
       Status: Closed

Olkaria West
      Code: OLWK
       -0.8380 36.2640 1780.0
       Network: NAI
       Status: Closed

Ollague
      Code: OLL
       -21.1750 -68.3717 4000.0
       Network: GUC
       Status: Closed

Olmué
      Code: OLCH
       -32.9939 -71.1728 173.0
       Network: GUC
       Status: Open

Olney
      Code: OLIL
       38.7338 -88.0991 150.0
       Network: SLM
       Status: Open

Olofström
      Code: OLF
       56.3080 14.4700 118.0
       Network: HFS
       Status: Closed

Olot
      Code: OLT
       42.1443 2.4743 700.0
       Network: MRB
       Status: Open

Olula del Rio
      Code: EXOR
       37.3530 -2.2970 520.0
       Network: MDD
       Status: Open

Olympia
      Code: OLW
       47.0728 -122.9225 37.0
       Status: Open

Olympics--Bonidu Creek
      Code: OBC
       48.0353 -124.0775 938.0
       Network: SEA
       Status: Open

Olympics--Burnt Hill
      Code: OBH
       47.3263 -123.8658 383.0
       Network: SEA
       Status: Open

Olympics--Forks
      Code: OFK
       47.9500 -124.3578 134.0
       Network: SEA
       Status: Open

Olympics--Lake Quinault
      Code: OLQ
       47.6661 -123.8088 121.0
       Network: SEA
       Status: Open

Olympics--North River
      Code: ON2
       46.8808 -123.7811 257.0
       Network: SEA
       Status: Open

Olympics--North River
      Code: ONR
       46.8771 -123.7712 257.0
       Network: SEA
       Status: Closed

Olympics--Salmon Ridge
      Code: OSR
       47.5056 -123.9617 815.0
       Network: SEA
       Status: Open

Olympics--Snow Dome
      Code: OSD
       47.8208 -123.7017 2010.0
       Network: SEA
       Status: Open

Olympics--Sooes Peak
      Code: OSP
       48.2849 -124.5898 585.0
       Network: SEA
       Status: Open

Olympics--Tyee Ridge
      Code: OTR
       48.0833 -124.3442 712.0
       Network: SEA
       Status: Open

Olyphant
      Code: OLY
       35.5027 -91.4700 236.0
       Network: CERI
       Status: Open

Omaesaki
      Code: OMA
       34.6017 138.2167 -165.0
       Network: JMA
       Status: Open

Omaezaki (Omaesaki)
      Code: OMA
       34.6017 138.2167 -165.0
       Network: JMA
       Status: Open

Omahuta
      Code: OUZ
       -35.2214 173.5961 40.0
       Network: WEL
       Status: Open

Omak
      Code: OMW
       48.4803 -119.5608 421.0
       Network: SEA
       Status: Open

Omchak
      Code: OCHR
       61.6653 147.8667 820.0
       Network: NERS
       Status: Open

Ometepe
      Code: OME
       11.5377 -85.6837 181.0
       Network: INET
       Status: Closed

Omihachiman
      Code: OHM
       35.1738 136.0835 120.0
       Network: KYT
       Status: Open

Omiya
      Code: OOM
       35.2167 138.6333 0.0
       Status: Closed

Omsukchan
      Code: OMS
       62.5150 155.7750 527.0
       Network: NERS
       Status: Open

Onahama
      Code: ONA
       36.9450 140.9067 3.0
       Network: JMA
       Status: Open

Onahama 2
      Code: ONAJ
       37.1017 140.7983 650.0
       Network: JMA
       Status: Open

Onbetsu
      Code: JOB
       42.9033 143.8347 60.0
       Network: JMA
       Status: Open

Oneida
      Code: ONTN
       36.4815 -84.4433 635.0
       Network: TVA
       Status: Open

Onerahi (Whangarei)
      Code: ONE
       -35.7758 174.3625 30.0
       Network: WEL
       Status: Closed

Ongoro
      Code: ONG
       -15.8990 -72.4732 880.0
       Status: Closed

Ongul
      Code: SYO
       -69.0088 39.5921 20.0
       Network: NIPR
       Status: Open

Ongureny
      Code: OGRR
       53.6433 107.5950 495.0
       Network: BYKL
       Status: Open

Oni
      Code: ONI
       42.5800 43.4500 810.0
       Network: TIF
       Status: Open

Onioshidashi
      Code: ODSE
       36.4219 138.5219 1710.0
       Network: ERIJ
       Status: Reserved

Ontario
      Code: ONTR
       43.2738 -77.3067 84.0
       Network: BLMY
       Status: Open

Onyx Ranch
      Code: WORM
       35.6965 -118.2420 837.0
       Network: PAS
       Status: Open

Oohira
      Code: OHRN
       35.4878 137.1946 330.0
       Network: NGY
       Status: Closed

Ooide
      Code: K09
       39.4742 141.5114 446.0
       Network: TOH
       Status: Open

Ooita
      Code: OIT
       33.2333 131.6233 6.0
       Network: JMA
       Status: Open

Ooka
      Code: OKAH
       19.4943 -154.9240 180.0
       Network: HVO
       Status: Reserved

Ookiep
      Code: OKP
       -29.6467 17.9650 936.0
       Network: PRE
       Status: Closed

Oologah
      Code: OLO
       36.4572 -95.7108 196.0
       Network: TUL
       Status: Closed

Oonami East
      Code: KV05
       31.9217 130.8586 1300.0
       Network: ERIJ
       Status: Reserved

Oonami West
      Code: KV03
       31.9217 130.8425 1188.0
       Network: ERIJ
       Status: Reserved

Oonodaira
      Code: K10
       39.4958 141.5147 616.0
       Network: TOH
       Status: Open

Ooshika
      Code: OOS
       35.5797 138.0487 805.0
       Network: NGY
       Status: Open

Ootomari
      Code: OOT
       46.6500 142.7667 36.0
       Status: Closed

Opal Mound
      Code: OPL
       38.4817 -112.8720 1766.0
       Network: SLCI
       Status: Open

Opana
      Code: OPA
       21.6908 -158.0117 134.0
       Network: HON
       Status: Open

Oploo
      Code: OPLO
       51.5888 5.8121 0.0
       Network: DBN
       Status: Open

Oran
      Code: ORA
       55.9300 113.6700 705.0
       Network: BYKL
       Status: Open

Oran
      Code: USTO
       35.7000 -0.5722 405.0
       Network: ALG
       Status: Open

Orange Hill
      Code: OHS
       13.3170 -61.1480 274.0
       Network: TRN
       Status: Reserved

Orangeburg
      Code: OSB
       33.5472 -80.8444 91.0
       Network: USGS
       Status: Open

Orangeburg
      Code: OSC
       33.5397 -80.8250 60.0
       Network: USGS
       Status: Closed

Orbe
      Code: ORB
       46.7167 6.5167 0.0
       Status: Closed

Orcadas
      Code: ORCD
       -60.7381 -44.7361 0.0
       Network: TRI
       Status: Open

Orchard Mesa
      Code: OMCO
       39.0270 -108.5170 0.0
       Network: MSCO
       Status: Open

Ordiarp
      Code: ORDF
       43.2135 -0.9357 270.0
       Network: OMPT
       Status: Open

Oregon House
      Code: AOHM
       39.3753 -121.2560 457.0
       Network: MNLO
       Status: Open

Oreshnoe
      Code: ORHR
       55.3020 93.6650 444.0
       Status: Open

Orgañá
      Code: CORG
       42.2303 1.3176 716.0
       Network: MRB
       Status: Open

Orgañá
      Code: ORG
       42.2278 1.3322 740.0
       Network: MRB
       Status: Open

Organya (Orgañá)
      Code: CORG
       42.2303 1.3176 716.0
       Network: MRB
       Status: Open

Organya (Orgañá)
      Code: ORG
       42.2278 1.3322 740.0
       Network: MRB
       Status: Open

Orgiva
      Code: ORGV
       36.8572 -3.4322 1600.0
       Network: CRT
       Status: Reserved

Orhaneli
      Code: ORLT
       40.0460 28.8960 649.0
       Network: ISK
       Status: Open

Orhaniye
      Code: ORH
       40.8602 30.0707 320.0
       Network: ISK
       Status: Open

Oricopia Mountain
      Code: ORCC
       33.5662 -115.7692 1087.0
       Network: PAS
       Status: Open

Oriolo
      Code: ORI
       40.0635 16.4492 375.0
       Network: ROM
       Status: Open

Oris-en-Rattier
      Code: ORIF
       44.9183 5.8800 1082.0
       Network: LDG
       Status: Open

Oritupano
      Code: ORIV
       9.0700 -63.4090 123.0
       Network: CAR
       Status: Open

Orlando
      Code: OR-FL
       28.4669 -81.2214 20.0
       Network: LRSM
       Status: Closed

Orleans Mountain
      Code: KOMM
       41.2788 -123.4522 1181.0
       Network: MNLO
       Status: Open

Orlik
      Code: ORL
       52.5389 99.8100 1360.0
       Network: BYKL
       Status: Open

Ormoc
      Code: OCLP
       11.0510 124.6090 130.0
       Network: PIVS
       Status: Open

Orongorongo Tunnel
      Code: OTW
       -41.2775 175.0042 230.0
       Network: WELW
       Status: Open

Oropa
      Code: ORO
       45.6275 7.9814 1160.0
       Network: ROM
       Status: Open

Oropa
      Code: ORX
       45.6325 7.9817 1250.0
       Network: GEN
       Status: Open

Oroville
      Code: ORV
       39.5545 -121.5004 334.7
       Network: CDWR
       Status: Open

Orsara di Puglia
      Code: FG5
       41.2825 15.2678 660.0
       Network: FOG
       Status: Open

Orti
      Code: OII
       38.1533 15.6892 0.0
       Network: MES
       Status: Open

Ortiz Mountain
      Code: OTZ
       35.7603 -106.1728 2091.0
       Network: LOA
       Status: Open

Orto-Tokoy
      Code: OTK
       42.3460 76.0170 1700.0
       Network: KYRG
       Status: Open

Os-Marcillon
      Code: OSML
       43.3892 -0.5928 105.0
       Network: STR
       Status: Open

Osaka
      Code: OSA
       34.6783 135.5217 13.0
       Network: JMA
       Status: Open

Osaka (Takayasuyama)
      Code: OSK
       34.6117 135.6600 472.0
       Network: JMA
       Status: Open

Osborn
      Code: OSBY
       41.3603 -73.9239 212.0
       Network: BLMY
       Status: Reserved

Oseberg A Platform
      Code: OSG
       60.4970 2.8760 -100.0
       Network: BER
       Status: Closed

Osh
      Code: OHH
       40.5240 72.7850 980.0
       Network: KYRG
       Status: Open

Oshima
      Code: OSHJ
       34.7467 139.3667 76.0
       Network: JMA
       Status: Open

Oshima (Osima)
      Code: OSH
       34.7617 139.3783 191.0
       Network: JMA
       Status: Closed

Oshima 2
      Code: JIM
       34.7617 139.3767 190.0
       Network: JMA
       Status: Closed

Oshima 3
      Code: JIM2
       34.7175 139.4312 405.0
       Network: JMA
       Status: Open

Osima
      Code: OSH
       34.7617 139.3783 191.0
       Network: JMA
       Status: Closed

Osito Adit
      Code: OSI
       34.6145 -118.7235 676.0
       Network: PAS
       Status: Open

Oskarshamn
      Code: OSKU
       57.1947 16.0994 100.0
       Network: UPP
       Status: Open

Oslo
      Code: OO-NW
       61.0547 10.8661 555.0
       Network: LRSM
       Status: Closed

Oslo
      Code: OSL
       59.9372 10.7227 70.0
       Network: BER
       Status: Open

Osmaniye
      Code: OSMT
       40.6022 29.7002 820.0
       Network: ISK
       Status: Open

Osorio
      Code: EOSO
       28.0718 -15.5525 760.0
       Network: MDD
       Status: Open

Osorno
      Code: OSCH
       -40.5758 -73.1276 45.0
       Network: GUC
       Status: Open

Ossès
      Code: OSSF
       43.2560 -1.2618 240.0
       Network: OMPT
       Status: Open

Oss. Sismologico, Università degli Studi de Bari
      Code: BARI
      
       Status: Network/Other

Osservatorio Vesuviano
      Code: OVO
       40.8267 14.3978 606.0
       Network: OVO
       Status: Open

Ossining
      Code: OSNY
       41.2117 -73.8283 122.0
       Network: BLMY
       Status: Open

Ossora
      Code: OSSR
       59.2500 163.0600 5.0
       Network: KRSC
       Status: Open

Ostrava--Krásné Pole
      Code: OKC
       49.8375 18.1472 272.0
       Network: GFU
       Status: Open

Ostrov Zhiloy
      Code: ZHI
       40.3290 50.5940 -24.0
       Network: AZER
       Status: Open

Ostuacán
      Code: OSCM
       17.4056 -93.3347 0.0
       Network: UNM
       Status: Closed

Ostula
      Code: OSM
       18.4972 -103.4719 0.0
       Network: UNM
       Status: Closed

Oswego
      Code: OSWG
       43.5170 -76.4162 84.0
       Network: BLMY
       Status: Open

Otahua Downs
      Code: ODZ
       -45.0453 170.6444 270.0
       Network: WEL
       Status: Open

Otama
      Code: JFT
       37.5182 140.3367 350.0
       Network: JMA
       Status: Open

Otara
      Code: OTAZ
       -36.9511 174.9247 0.0
       Network: WELA
       Status: Open

Otavalo
      Code: OTAV
       0.2376 -78.4508 3492.0
       Network: QUI
       Status: Open

Otepa
      Code: OTP
       -18.1675 -140.8567 2.0
       Network: PPT
       Status: Open

Oterleek
      Code: OTL
       52.6299 4.8226 -3.0
       Network: DBN
       Status: Open

Othello
      Code: OT2
       46.7214 -119.2347 355.0
       Network: SEA
       Status: Closed

Othello
      Code: OTH
       46.7390 -119.2165 384.0
       Network: SEA
       Status: Open

Othello 3
      Code: OT3
       46.6690 -119.2330 322.0
       Network: SEA
       Status: Open

Otiai
      Code: OTI
       47.3333 142.7833 0.0
       Status: Closed

Ottawa
      Code: OTT
       45.3939 -75.7158 83.0
       Network: OTT
       Status: Open

Otter Rapids
      Code: OTRO
       50.1818 -81.6286 109.0
       Network: POLR
       Status: Open

Ouanaham
      Code: OUA
       -20.7747 167.2439 29.0
       Network: NOU
       Status: Open

Oued Fodda
      Code: OFD
       36.0667 1.6000 377.0
       Network: ALG
       Status: Closed

Oujda
      Code: OUJ
       34.6570 -1.9010 600.0
       Network: CNRM
       Status: Open

Oukaïmedene
      Code: OUK
       31.2090 -7.8680 2720.0
       Network: CNRM
       Status: Open

Oulhaça
      Code: OLHC
       35.2500 -1.4200 600.0
       Network: ALG
       Status: Open

Oulu
      Code: OUL
       65.0853 25.8964 60.0
       Network: HEL
       Status: Open

Oum el Arais
      Code: OAR
       34.5317 8.3968 475.0
       Network: SBS
       Status: Open

Oura
      Code: ORJ
       35.5171 136.1197 150.0
       Network: DRI
       Status: Closed

Ouranopolis
      Code: OUR
       40.3344 23.9819 60.0
       Network: THE
       Status: Open

Ouri
      Code: JIO
       38.4543 141.3488 40.0
       Network: JMA
       Status: Open

Outingdale
      Code: AODM
       38.6148 -120.7285 520.0
       Network: MNLO
       Status: Open

Outlet
      Code: OUT
       19.3897 -155.2823 1038.0
       Network: HVO
       Status: Open

Ova Spin
      Code: OSS
       46.6868 10.1437 1700.0
       Network: ZUR
       Status: Open

Ovalau
      Code: OVA
       -17.6862 178.7837 439.0
       Network: SVA
       Status: Open

Ovalle
      Code: OVCH
       -30.6080 -71.2010 222.0
       Network: GUC
       Status: Open

Ovando
      Code: OVMT
       47.0643 -112.9967 1494.0
       Network: BUT
       Status: Open

Over Castle Rock
      Code: OCN
       43.8848 -74.5293 701.0
       Network: PAL
       Status: Closed

Overton
      Code: OVE
       36.5311 -114.4425 395.0
       Network: NEIC
       Status: Closed

Owase
      Code: OWA
       34.0667 136.1950 14.0
       Network: JMA
       Status: Open

Owens Crossroads
      Code: OCA
       34.6138 -86.4352 250.0
       Network: ATL
       Status: Open

Owens River
      Code: ORC
       37.6353 -118.6560 2301.0
       Network: REN
       Status: Open

Owia
      Code: SOA
       13.3735 -61.1486 40.0
       Network: TRN
       Status: Open

Owl Hoot
      Code: OHTN
       36.1500 -89.5200 82.0
       Network: SLM
       Status: Open

Ox Mountain
      Code: OXMT
       37.4994 -122.4243 14.8
       Network: BRK
       Status: Open

Oxenhope Moor
      Code: OMWY
       53.7909 -1.9799 438.0
       Network: QMB
       Status: Reserved

Oxford
      Code: OXD
       51.7667 -1.2500 61.0
       Status: Closed

Oxford
      Code: OXF
       34.5118 -89.4092 101.0
       Network: NEIC
       Status: Open

Oxtotitlan
      Code: OXM
       19.2972 -99.6883 2700.0
       Network: UNM
       Status: Closed

Oya 1
      Code: OYT
       35.3339 134.6645 260.0
       Network: DRI
       Status: Closed

Oya 2
      Code: OYT2
       35.3218 134.6658 230.0
       Network: DRI
       Status: Reserved

Oyama
      Code: OYM
       35.4201 139.2430 600.0
       Network: ERIJ
       Status: Open

Ozernaya
      Code: OZE
       56.3000 113.9800 620.0
       Network: BYKL
       Status: Open