Yes — synthworx.org has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 synthworx.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::6815:4110 answers · 443✓ 2606:4700:3030::ac43:8b45 answers · 443	yes
www over IPv6 www.synthworx.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::6815:4110 answers · 443✓ 2606:4700:3030::ac43:8b45 answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. alt1.synthworx.org ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. joyce.ns.cloudflare.com ✓margo.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Redirects to synthworx.com, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all.

https://synthworx.org/ via 2606:4700:3031::6815:4110 → 301https://synthworx.com/ · redirects to synthworx.com, which has no IPv6 address

problem

Nothing keeping you from an A

A redirect leads off IPv6
Redirects to synthworx.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

synthworx.org Has IPv6

A (IPv4)	104.21.65.16 172.67.139.69
AAAA (IPv6)	2606:4700:3031::6815:4110 2606:4700:3030::ac43:8b45

www.synthworx.org Has IPv6

A (IPv4)	104.21.65.16 172.67.139.69
AAAA (IPv6)	2606:4700:3031::6815:4110 2606:4700:3030::ac43:8b45

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: synthworx.org
Measured 2026-11-12 03:49:50 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.65.16, 172.67.139.69
AAAA (IPv6): 2606:4700:3031::6815:4110, 2606:4700:3030::ac43:8b45
www AAAA:    2606:4700:3031::6815:4110, 2606:4700:3030::ac43:8b45

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: synthworx.org has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::6815:4110: answers (TCP 443)
    2606:4700:3030::ac43:8b45: answers (TCP 443)
- www over IPv6: www.synthworx.org has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::6815:4110: answers (TCP 443)
    2606:4700:3030::ac43:8b45: 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): Redirects to synthworx.com, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all.
    https://synthworx.org/ via 2606:4700:3031::6815:4110 -> HTTP 301, certificate: valid
    https://synthworx.com/ (redirects to synthworx.com, which has no IPv6 address)
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/qyWovsvbQl

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

Checked 2026-11-12 03:49:50 UTC. Full DNS report: dns.pizza/domain/synthworx.org · Age, certificate and blocklists: how.is/synthworx.org · JSON: /api/v1/synthworx.org