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| 1968–1984 | 1984–1992 | 1992–1994 | 1994–1998 | 1998–2009 | 2009–2018 | 2018–present |
Telefones de Lisboa e Porto[]
1968–1984[]
1984–1992[]
Telecom Portugal[]
1992–1994[]
Portugal Telecom[]
1994–1998[]
1998–2009[]
2009–2018[]
Altice[]
2018–present[]
Template:Portugal Telecom
| Altice France: Telecommunications: SFR Altice International: Israel: HOT Dominican Republic: Altice Dominicana Altice USA: Defunct/former: 1Sold to CMA CGM.  |