The situation is even worse here at your SE neighbors. The three nation wide ISPs don't provide working IPv6 at all:
Slovak Telekom (Deutsche Telekom Subsidiary, same as Czech T-Mobile/T-Com) - FTTx, DSL, WISP
Orange (French Orange S.A. subsidiary) - FTTx, DSL, WISP
O2 (The Czech HQ'd PPF owned, not the UK one) - WISP
And even the more regional, but still big, aren't much better.
UPC (Liberty Global subsidiary) - Cable
Antik (Slovak company) - FTTx, Cable, WISP
SWAN (also Slovak company) - DSL, FTTx, WISP
But I have to shout out my dad's ISP, it's called RadioLAN, it's a slovak company, provides WISP and FTTx and also IPv6 to everyone by default. So far the only one I've found. Funny thing is, the peering in our country is handled by two IXs: SIX and NIX both natively supporting IPv6 interconection. If I've messed some terminology or I've outdated info, I'm sorry. As you said, nod to until we live in a very very specific location, we're left with just one ISP, or basically the same one in blue. I'm less than 10km behind the capital's outer borders, yet I have a huge problem getting FTTH ran here. It's literally connected at the both ends of our street, just not here. I've considered doing something about it myself, it's just simply too expensive.
Slovak Telekom (Deutsche Telekom Subsidiary, same as Czech T-Mobile/T-Com) - FTTx, DSL, WISP
Orange (French Orange S.A. subsidiary) - FTTx, DSL, WISP
O2 (The Czech HQ'd PPF owned, not the UK one) - WISP
And even the more regional, but still big, aren't much better.
UPC (Liberty Global subsidiary) - Cable
Antik (Slovak company) - FTTx, Cable, WISP
SWAN (also Slovak company) - DSL, FTTx, WISP
But I have to shout out my dad's ISP, it's called RadioLAN, it's a slovak company, provides WISP and FTTx and also IPv6 to everyone by default. So far the only one I've found. Funny thing is, the peering in our country is handled by two IXs: SIX and NIX both natively supporting IPv6 interconection. If I've messed some terminology or I've outdated info, I'm sorry. As you said, nod to until we live in a very very specific location, we're left with just one ISP, or basically the same one in blue. I'm less than 10km behind the capital's outer borders, yet I have a huge problem getting FTTH ran here. It's literally connected at the both ends of our street, just not here. I've considered doing something about it myself, it's just simply too expensive.