Yes — railway.app has IPv6.

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

This is a saved measurement from 2026-11-02 13:24 UTC. Check railway.app live now

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
railway.app has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700::6812:bf6 answers · 443✓ 2606:4700::6812:af6 answers · 443
yes
www over IPv6
www.railway.app has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700::6812:bf6 answers · 443✓ 2606:4700::6812:af6 answers · 443
yes
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
aspmx.l.google.com ✓alt3.aspmx.l.google.com ✓alt4.aspmx.l.google.com ✓alt1.aspmx.l.google.com ✓alt2.aspmx.l.google.com ✓
yes
Nameservers have IPv6
3 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
blue.foundationdns.com ✓blue.foundationdns.net ✓blue.foundationdns.org ✓
yes
HTTPS over IPv6 · not part of the grade yet
Redirects to railway.com, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all.
https://railway.app/ via 2606:4700::6812:bf6 → 301https://railway.com/ · redirects to railway.com, which has no IPv6 address
problem

Nothing keeping you from an A

  1. A redirect leads off IPv6
    Redirects to railway.com, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all. Give the redirect target IPv6 too, or redirect somewhere that has it.

Check again

railway.app  Has IPv6

A (IPv4)104.18.10.246
104.18.11.246
AAAA (IPv6)2606:4700::6812:bf6
2606:4700::6812:af6

www.railway.app  Has IPv6

A (IPv4)104.18.10.246
104.18.11.246
AAAA (IPv6)2606:4700::6812:bf6
2606:4700::6812:af6

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/MtgCTkkLk2 · How we measure

Checked 2026-11-02 13:24:21 UTC. Full DNS report: dns.pizza/domain/railway.app · JSON: /api/v1/railway.app