OAS, Albay - MATELCO	OAS	00 + 52 + Telephone Number
OAS, Albay (BAYANTEL)	ICO	00 + 52 + Telephone Number
OAS, Albay (DIGITEL)	OAD	00 + 52 + Telephone Number
OAS, Albay (SOTELCO)	OWS	00 + 52 + Telephone Number
OBANDO, Bulacan AXE	OBA	00 + 44 + Telephone Number
OBANDO, Bulacan (NTP/DIGITEL)	UBX	00 + 2 + Telephone Number
OCAMPO, Camarines Sur (BAYANTEL)	IOC	00 + 54 + Telephone Number
ODIONGAN, Romblon - S. Ylagan TOBS	ODO	00 + 42 + Telephone Number
ODIONGAN, Romblon (PT&T VODEX)	ODV	00 + 42 + Telephone Number
OLONGAPO, Zambales AXE	OGP	00 + 47 + Telephone Number
OLONGAPO, Zambales (LBNI)	OLB	00 + 47 969 + Telephone Number
OLONGAPO, Zambales (PT&T VODEX)	OLN	00 + 47 + Telephone Number
OLONGAPO, Zambales RTS FETEX (PILTEL)	OLO	00 + 47 + Telephone Number
OLUTANGA, Zamboanga Del Sur - D.R. Sarabia	OLT	00 + 62 + Telephone Number
ORANI, Bataan (BATAAN TEL. SYS.)	ORA	00 + 47 + Telephone Number
ORANI, Bataan (NTP)	ORB	00 + 47 + Telephone Number
ORAS, Eastern Samar - I.M. Sucion	ORS	00 + 55 + Telephone Number
ORION PLDT Toll Booth	ORN	00 + 47 + Telephone Number
ORION/LIMAY, Bataan S12	ORI	00 + 47 + Telephone Number
ORION/LIMAY, Bataan S12 TELETIPID	ORI	00 + 47 + Telephone Number
ORMOC - L. D. Santiago TOBS	OCI	00 + 53 + Telephone Number
ORMOC, Leyte (DOTC / CPMO)	ORL	00 + 53 + Telephone Number
ORMOC, Leyte (ISLACOM)	OLZ	00 + 53 + Telephone Number
ORMOC, Leyte (ORMOCTELCO)	ORM	00 + 53 + Telephone Number
ORMOC, Leyte (PT&T VODEX)	ORC	00 + 53 + Telephone Number
OROQUIETA 1, Misamis Occ. (PILTEL)	ORU	00 + 88 + Telephone Number
OROQUIETA 2, Misamis Occ. (PILTEL)	ORU	00 + 88 + Telephone Number
OROQUIETA, Mis. Occ. - A. Quiza	OMI	00 + 88 + Telephone Number
OROQUIETA, Mis. Occ. - M.M. Te	ORE	00 + 88 + Telephone Number
OROQUIETA, Mis. Occ. - R.G. Seril	OQR	00 + 88 + Telephone Number
OROQUIETA, Misamis Occ. (MTPO)	OCM	00 + 88 + Telephone Number
OROQUIETA, Misamis Occ. (PT&T VODEX)	OQT	00 + 88 + Telephone Number
OROQUIETA, Misamis Occ. NEAX	ORQ	00 + 88 + Telephone Number
OROQUIETA, Misamis Occ. NEAX TELETIPID	ORQ	00 + 88 + Telephone Number
ORTIGAS NEAX 61E	ORT	00 + 2 + Telephone Number
ORTIGAS NEAX 61E - TELETIPID	ORT	00 + 2 + Telephone Number
ORTIGAS EWSD	ORD	00 + 2 + Telephone Number
ORTIGAS EWSD - TELETIPID	ORD	00 + 2 + Telephone Number
OSLOB, Cebu - RPPFI	OSL	00 + 32 + Telephone Number
OSLOB, Cebu (ISLACOM)	GOS	00 + 32 + Telephone Number
OTON, Iloilo - N.M. Guanzon	OTN	00 + 33 + Telephone Number
OTON, Iloilo (ISLACOM)	IOT	00 + 33 + Telephone Number
OZAMIS - B. Ver	OZV	00 + 88 + Telephone Number
OZAMIS - R. Ceniza	OZI	00 + 88 + Telephone Number
OZAMIS 1, Misamis Occ. (PILTEL)	OSA	00 + 88 + Telephone Number
OZAMIS 2, Misamis Occ. (PILTEL)	OSM	00 + 88 + Telephone Number
OZAMIS 3, Misamis Occ. (PILTEL)	OSS	00 + 88 + Telephone Number
OZAMIS PLDT Toll Booth	OZB	00 + 88 + Telephone Number
OZAMIS, Misamis Occ. (LBNI)	LCM	00 + 88 969 + Telephone Number
OZAMIS, Misamis Occ. (MTPO)	OZC	00 + 88 + Telephone Number
OZAMIS, Misamis Occ. (PT&T VODEX)	OZS	00 + 88 + Telephone Number
OZAMIS, Misamis Occ. EWSD	OZA	00 + 88 + Telephone Number
OZAMIS, Misamis Occ. EWSD TELETIPID	OZA	00 + 88 + Telephone Number