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| 1968–1984 | 1984–1992 | 1992–1994 | 1994–1998 |
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| 1998–2009 | 2009–2018 | 2018–2025 | 2025–present |
Telefones de Lisboa e Porto[]
1968–1984[]
1984–1992[]
Telecom Portugal[]
1992–1994[]
Portugal Telecom[]
1994–1998[]
1998–2009[]
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2009–2018[]
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Altice[]
2018–2025[]
MEO[]
2025–present[]
MEO
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| Part of Altice International
Brands Festivals Other Former/defunct Notes:  |
| Altice France: SFR Altice International:
Israel: Defunct/former: Divested: 1 Sold to CMA CGM.  |