Comcast added IPv6 ages ago. Time Warner and AT&T (FTTH, not just mobile internet) support it now as well.

All the big cable and fiber internet providers I've worked with in the US support IPv6, even evil nasty ones like Comcast have supported it for a decade now.

Is it enabled by default on customer equipment?

On their leased hardware, it is enabled from what I've seen. And if you are running your own modem and router, you will get IPv6 if you configure your setup to request it (via DHCP). They will even give you a /60 if your DHCP client asks for it.

Even? /60 should be the minimum, even home users usually have a couple subnets (guest networks for example, sometimes one for the router's WAN link) and you want the boundary to be on a nybble boundary

A /60 network consists of 295,147,905,179,352,825,856 addresses. I think most users will probably be fine with that.

This is v6; nobody counts individual IPs, because the answer is always "enough".

A /60 is only 16 /64s (i.e. 16 subnets), and that's not always enough.

Yeah, it's not always, but for most home networks it probably is. Ideally they'd give you a /56 or even a /48, but giving those on request and a /60 by default is fine.

Wait, can you not subnet IPv6 smaller than /64?

Not if you want SLAAC to work, no.

Weak, here in Sweden I get a /56 from my ISP. You'll run out of IP addresses long before I do!

When I had Comcast about 5 years ago it was enabled by default.

> Not sure what France is doing though, maybe something right.

The telecom regulator (ARCEP) conditioned 5G bands on rolling out IPv6.

Not sure what France is doing because Im in Paris and I can tell ipv6 only router does not work. Maybe it's also about mobile.

okay - how about a few other angles?

https://stats.labs.apnic.net/ipv6/ - per-country, and within a country, per-asn eyeball statistics, collected from online ads - not just mobile!

https://www.facebook.com/ipv6/?tab=ipv6_country - per-country, albeit with a mobile-heavier bias (as you hint)

https://www.akamai.com/internet-station/cyber-attacks/state-... - collected from their content delivery network - tends to show lower adoption than the other metrics

i would point out that "all mobile phones have IPv6" isn't true globally, but it is the reality in some countries, yes.

Neat, very different results. But still looking at it from the wrong direction?

That is, ipv6 for clients. But I'm more interested in servers, because that is what would affect me if I don't have IPv4. Such as the experiences described by OP in this thread.

ipv6-only web sites are borderline nonexistant, because no one who needs to maintain a profit dares to cut off a revenue stream from legacy ip only users (yet).

the most exhaustive list thus far is https://sites.ip-update.net/ afaik

I'm not asking for ipv6-only, but ipv4-only.

Those are the ones blocking adoption for me, as an end user.

How are they blocking? You're just behind a NAT64, which is no worse than NAT44, with the bonus of having actual connectivity on the IPv6 side.

derp yes

https://whynoipv6.com/

Ugh, Centurylink. Their networks, both DSL and Fiber, support IPv6 but you need to go into the router config and explicitly enable it which is why they show up as 0.5% IPv6 supported in that first link despite every other top-10 US ISP having at least 50%. I've enabled v6 on my home connections with them on both DSL and fiber and I've had absolutely no problems with it. I wish they would enable it by default with their consumer network equipment.