Yes — metamask.io has IPv6.

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

This is a saved measurement from 2026-11-01 20:22 UTC. Check metamask.io live now

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
metamask.io has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:4405::ac40:93b5 answers · 443✓ 2a06:98c1:310d::6812:284b answers · 443
yes
www over IPv6
www.metamask.io has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:4405::ac40:93b5 answers · 443✓ 2a06:98c1:310d::6812:284b answers · 443
yes
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
smtp.google.com ✓
yes
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
adelaide.ns.cloudflare.com ✓langston.ns.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.
https://metamask.io/ via 2606:4700:4405::ac40:93b5 → 301https://metamask.com/ via 2606:4700:440c::6812:2a5d → 200
works

Nothing keeping you from an A

  1. Nothing to fix
    Show it off: add the badge to your README.
    [![IPv6](https://aaaa.bot/badge/metamask.io.svg)](https://aaaa.bot/metamask.io)

Check again

metamask.io  Has IPv6

A (IPv4)104.18.40.75
172.64.147.181
AAAA (IPv6)2606:4700:4405::ac40:93b5
2a06:98c1:310d::6812:284b

www.metamask.io  Has IPv6

A (IPv4)104.18.40.75
172.64.147.181
AAAA (IPv6)2606:4700:4405::ac40:93b5
2a06:98c1:310d::6812:284b

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/vrY5TILCVQ · How we measure

Checked 2026-11-01 20:22:50 UTC. Full DNS report: dns.pizza/domain/metamask.io · JSON: /api/v1/metamask.io