Yes — tarmac.codes has IPv6.

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

IPv6 readiness

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

Website over IPv6 tarmac.codes has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::ac43:81b0 answers · 443✓ 2606:4700:3031::6815:1b4 answers · 443	yes
www over IPv6 www.tarmac.codes has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::ac43:81b0 answers · 443✓ 2606:4700:3031::6815:1b4 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. mx1.mail.ovh.net ✗mx3.mail.ovh.net ✗mx2.mail.ovh.net ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. autumn.ns.cloudflare.com ✓bjorn.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://tarmac.codes/ via 2606:4700:3037::ac43:81b0 → 301https://runtarmac.com/ via 2600:1f18:16e:df01::258 → 200

works

What's keeping tarmac.codes from an A

Mail servers without IPv6
mx1.mail.ovh.net, mx3.mail.ovh.net, mx2.mail.ovh.net have no AAAA record, so mail from IPv6-only servers can't reach them directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

tarmac.codes Has IPv6

A (IPv4)	172.67.129.176 104.21.1.180
AAAA (IPv6)	2606:4700:3037::ac43:81b0 2606:4700:3031::6815:1b4

www.tarmac.codes Has IPv6

A (IPv4)	104.21.1.180 172.67.129.176
AAAA (IPv6)	2606:4700:3037::ac43:81b0 2606:4700:3031::6815:1b4

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: tarmac.codes
Measured 2026-11-10 18:53:06 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.129.176, 104.21.1.180
AAAA (IPv6): 2606:4700:3037::ac43:81b0, 2606:4700:3031::6815:1b4
www AAAA:    2606:4700:3037::ac43:81b0, 2606:4700:3031::6815:1b4

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: tarmac.codes has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::ac43:81b0: answers (TCP 443)
    2606:4700:3031::6815:1b4: answers (TCP 443)
- www over IPv6: www.tarmac.codes has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::ac43:81b0: answers (TCP 443)
    2606:4700:3031::6815:1b4: 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 after 1 redirect: HTTP 200.
    https://tarmac.codes/ via 2606:4700:3037::ac43:81b0 -> HTTP 301, certificate: valid
    https://runtarmac.com/ via 2600:1f18:16e:df01::258 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/55vQBB7HJ8

Permanent link: aaaa.bot/r/55vQBB7HJ8 · How we measure

Checked 2026-11-10 18:53:06 UTC. Full DNS report: dns.pizza/domain/tarmac.codes · Age, certificate and blocklists: how.is/tarmac.codes · JSON: /api/v1/tarmac.codes