Yes — coinbase-uk.com has IPv6.

Has both IPv4 (A) and IPv6 (AAAA) addresses.

B
IPv6 readiness
Works over IPv6, with one gap: its mail servers lack IPv6.
Website over IPv6
coinbase-uk.com has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3031::6815:fa7 answers · 443✓ 2606:4700:3032::ac43:a324 answers · 443
yes
www over IPv6
www.coinbase-uk.com has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3032::ac43:a324 answers · 443✓ 2606:4700:3031::6815:fa7 answers · 443
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
webhost.dynadot.com ✗
no
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
chloe.ns.cloudflare.com ✓dean.ns.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
coinbase-uk.com didn't complete an HTTPS request over IPv6 (timed out).
https://coinbase-uk.com/ via 2606:4700:3031::6815:fa7 · timed out
?
 Load coinbase-uk.com over IPv6 from up to six other places — a second opinion.

What's keeping coinbase-uk.com from an A

  1. Mail servers without IPv6
    webhost.dynadot.com has no AAAA record, so mail from IPv6-only servers can't reach it directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

coinbase-uk.com  Has IPv6

A (IPv4)104.21.15.167
172.67.163.36
AAAA (IPv6)2606:4700:3031::6815:fa7
2606:4700:3032::ac43:a324

www.coinbase-uk.com  Has IPv6

A (IPv4)104.21.15.167
172.67.163.36
AAAA (IPv6)2606:4700:3032::ac43:a324
2606:4700:3031::6815:fa7

Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).

Copy the evidence — a citation-ready record of this measurement

 Permanent link: aaaa.bot/r/SC6s2Cs8vR · How we measure

Checked 2026-10-31 20:31:50 UTC. Full DNS report: dns.pizza/domain/coinbase-uk.com · JSON: /api/v1/coinbase-uk.com