Yes — 1password.com has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 1password.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:7::18b answers · 443✓ 2a06:98c1:58::18b answers · 443	yes
www over IPv6 www.1password.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:7::18b answers · 443✓ 2a06:98c1:58::18b answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. aspmx.l.google.com ✓aspmx2.googlemail.com ✓aspmx3.googlemail.com ✓alt1.aspmx.l.google.com ✓alt2.aspmx.l.google.com ✓	yes
Nameservers have IPv6 4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ns-109.awsdns-13.com ✓ns-1527.awsdns-62.org ✓ns-1850.awsdns-39.co.uk ✓ns-671.awsdns-19.net ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.

https://1password.com/ via 2606:4700:7::18b → 200

works

Nothing keeping you from an A

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

Check again

1password.com Has IPv6

A (IPv4)	162.159.141.147 172.66.1.143
AAAA (IPv6)	2606:4700:7::18b 2a06:98c1:58::18b

www.1password.com Has IPv6

A (IPv4)	172.66.1.143 162.159.141.147
AAAA (IPv6)	2606:4700:7::18b 2a06:98c1:58::18b

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

IPv6 measurement: 1password.com
Measured 2026-10-31 15:45:42 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    162.159.141.147, 172.66.1.143
AAAA (IPv6): 2606:4700:7::18b, 2a06:98c1:58::18b
www AAAA:    2606:4700:7::18b, 2a06:98c1:58::18b

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: 1password.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:7::18b: answers (TCP 443)
    2a06:98c1:58::18b: answers (TCP 443)
- www over IPv6: www.1password.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:7::18b: answers (TCP 443)
    2a06:98c1:58::18b: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server has an AAAA record.
- Nameservers have IPv6: 4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.

Reachability = a TCP connection opened on port 443 (or 80).

HTTPS over IPv6 (not graded): Loads over IPv6 with a valid certificate: HTTP 200.
    https://1password.com/ via 2606:4700:7::18b -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/c9a1LyHExO

Permanent link: aaaa.bot/r/c9a1LyHExO · How we measure

Checked 2026-10-31 15:45:42 UTC. Full DNS report: dns.pizza/domain/1password.com · JSON: /api/v1/1password.com