Telekom Srbija (Serbia)
SBB (Serbia)
Orion telekom (Serbia)
Supernova (Serbia)
A1 Slovenia
Telekom Slovenije (Slovenia)
Telemach (Slovenia)
A1 HR (Croatia)
Telemach (Croatia)
T-Com (Croatia)
Iskon (Croatia)
Telekom Srpske (Bosnia and Herzegovina)
Telemach (Bosnia and Herzegovina)
Triontel (Bosnia and Herzegovina)
Mtel (Montenegro)
T-Com (Montenegro)
T-Com (North Macedonia)
A1 (North Macedonia)
... and similar in Bulgaria
On all relevant websites, you cannot find info on BYO, and I can personally guarantee you cannot use your device on GPON or DOCSIS networks.
Only Romania is an exception.
Telekom Srbija (Serbia)
SBB (Serbia)
Orion telekom (Serbia)
Supernova (Serbia)
A1 Slovenia
Telekom Slovenije (Slovenia)
Telemach (Slovenia)
A1 HR (Croatia)
Telemach (Croatia)
T-Com (Croatia)
Iskon (Croatia)
Telekom Srpske (Bosnia and Herzegovina)
Telemach (Bosnia and Herzegovina)
Triontel (Bosnia and Herzegovina)
Mtel (Montenegro)
T-Com (Montenegro)
T-Com (North Macedonia)
A1 (North Macedonia)
... and similar in Bulgaria
On all relevant websites, you cannot find info on BYO, and I can personally guarantee you cannot use your device on GPON or DOCSIS networks.
Only Romania is an exception.