Yes — openstreetmap.org has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 openstreetmap.org has 4 IPv6 addresses and answers on every one we tested. ✓ 2a04:4e42::311 answers · 443✓ 2a04:4e42:200::311 answers · 443✓ 2a04:4e42:400::311 answers · 443✓ 2a04:4e42:600::311 answers · 443	yes
www over IPv6 www.openstreetmap.org has 4 IPv6 addresses and answers on every one we tested. ✓ 2a04:4e42::311 answers · 443✓ 2a04:4e42:200::311 answers · 443✓ 2a04:4e42:400::311 answers · 443✓ 2a04:4e42:600::311 answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. a.mx.openstreetmap.org ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. daisy.ns.cloudflare.com ✓rajeev.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://openstreetmap.org/ via 2a04:4e42::311 → 301https://www.openstreetmap.org/ via 2a04:4e42::311 → 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/openstreetmap.org.svg)](https://aaaa.bot/openstreetmap.org)

Check again

openstreetmap.org Has IPv6

A (IPv4)	151.101.193.55 151.101.1.55 151.101.65.55 151.101.129.55
AAAA (IPv6)	2a04:4e42::311 2a04:4e42:200::311 2a04:4e42:400::311 2a04:4e42:600::311

www.openstreetmap.org Has IPv6

Alias of	dualstack.m.sni.global.fastly.net
A (IPv4)	151.101.1.55 151.101.65.55 151.101.129.55 151.101.193.55
AAAA (IPv6)	2a04:4e42::311 2a04:4e42:200::311 2a04:4e42:400::311 2a04:4e42:600::311

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: openstreetmap.org
Measured 2026-10-30 23:04:36 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    151.101.193.55, 151.101.1.55, 151.101.65.55, 151.101.129.55
AAAA (IPv6): 2a04:4e42::311, 2a04:4e42:200::311, 2a04:4e42:400::311, 2a04:4e42:600::311
www AAAA:    2a04:4e42::311, 2a04:4e42:200::311, 2a04:4e42:400::311, 2a04:4e42:600::311

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: openstreetmap.org has 4 IPv6 addresses and answers on every one we tested.
    2a04:4e42::311: answers (TCP 443)
    2a04:4e42:200::311: answers (TCP 443)
    2a04:4e42:400::311: answers (TCP 443)
    2a04:4e42:600::311: answers (TCP 443)
- www over IPv6: www.openstreetmap.org has 4 IPv6 addresses and answers on every one we tested.
    2a04:4e42::311: answers (TCP 443)
    2a04:4e42:200::311: answers (TCP 443)
    2a04:4e42:400::311: answers (TCP 443)
    2a04:4e42:600::311: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server has an AAAA record.
- Nameservers have IPv6: 2 of 2 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 after 1 redirect: HTTP 200.
    https://openstreetmap.org/ via 2a04:4e42::311 -> HTTP 301, certificate: valid
    https://www.openstreetmap.org/ via 2a04:4e42::311 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/SI1eSWyil2

Permanent link: aaaa.bot/r/SI1eSWyil2 · How we measure

Checked 2026-10-30 23:04:36 UTC — one of the top 1,000 sites, re-checked weekly. Re-check now. Full DNS report: dns.pizza/domain/openstreetmap.org · JSON: /api/v1/openstreetmap.org