So I’ve had IPv6 connectivity since September 2007 from my house, initially thanks to SixXS.
I last reached out to one of my Service Providers just weeks before SixXS ended service. They continue to not support IPv6, nor have a schedule for supporting IPv6. My other provider has started supporting IPv6 for their home users, but on the business side it would appear to be a bit more difficult to gain connectivity with IPv6. Which reminds me I need to call them again, since their online support tools don’t support business customers. I finally got IPv6 address space on my business connection, unfortunately they hand off a /56 via DHCP-PD but don’t route it. I can toss IPv6 packets at them, but see neighbor solicitations coming back instead of them routing the traffic back to me.
Hopefully you can see that I continue to have IPv6 connectivity. This connectivity was published from AS16881 via the LISP-Beta Network. The LISP-Beta Network officially stopped existence in early 2020, but continued to run until October. Finally was able to find Internet Transport service when someone nearby had fiber run to their business, and was able to get the same provider to deliver fiber to me at a reasonable cost, moving from their Business service to Enterprise service.