Yes — gasteel.surf has IPv6.

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

Measured 2026-11-01 10:59 UTC. We reuse a result for up to a week, so we aren't testing the same site over and over. Check gasteel.surf now

IPv6 readiness

Works over IPv6, with one gap: its mail servers lack IPv6.

Website over IPv6 gasteel.surf has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::ac43:d988 answers · 443✓ 2606:4700:3037::6815:5349 answers · 443	yes
www over IPv6 www.gasteel.surf has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::6815:5349 answers · 443✓ 2606:4700:3034::ac43:d988 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. _dc-mx.a7f5eee79df2.gasteel.surf ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. daniella.ns.cloudflare.com ✓howard.ns.cloudflare.com ✓	yes

First measured 2026-11-01; last confirmed 2026-11-01.

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 403.

https://gasteel.surf/ via 2606:4700:3034::ac43:d988 → 403

works

What's keeping gasteel.surf from an A

Mail servers without IPv6
_dc-mx.a7f5eee79df2.gasteel.surf 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

gasteel.surf Has IPv6

A (IPv4)	172.67.217.136 104.21.83.73
AAAA (IPv6)	2606:4700:3034::ac43:d988 2606:4700:3037::6815:5349

www.gasteel.surf Has IPv6

A (IPv4)	172.67.217.136 104.21.83.73
AAAA (IPv6)	2606:4700:3037::6815:5349 2606:4700:3034::ac43:d988

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: gasteel.surf
Measured 2026-11-01 10:59:03 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.217.136, 104.21.83.73
AAAA (IPv6): 2606:4700:3034::ac43:d988, 2606:4700:3037::6815:5349
www AAAA:    2606:4700:3037::6815:5349, 2606:4700:3034::ac43:d988

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: gasteel.surf has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3034::ac43:d988: answers (TCP 443)
    2606:4700:3037::6815:5349: answers (TCP 443)
- www over IPv6: www.gasteel.surf has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::6815:5349: answers (TCP 443)
    2606:4700:3034::ac43:d988: answers (TCP 443)
- Mail servers (MX) have IPv6: None of the mail servers 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: HTTP 403.
    https://gasteel.surf/ via 2606:4700:3034::ac43:d988 -> HTTP 403, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/5hSPcmdxNG

Permanent link: aaaa.bot/r/5hSPcmdxNG · How we measure

Checked 2026-11-01 10:59:03 UTC. Full DNS report: dns.pizza/domain/gasteel.surf · JSON: /api/v1/gasteel.surf