Yes — xn--s3co0dzb.com 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 xn--s3co0dzb.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::6815:2b84 answers · 443✓ 2606:4700:3030::ac43:b38c answers · 443	yes
www over IPv6 www.xn--s3co0dzb.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3030::ac43:b38c answers · 443✓ 2606:4700:3033::6815:2b84 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. mx1.spacemail.com ✗mx2.spacemail.com ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. maeve.ns.cloudflare.com ✓newt.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
xn--s3co0dzb.com didn't complete an HTTPS request over IPv6 (timed out).

https://xn--s3co0dzb.com/ via 2606:4700:3033::6815:2b84 · timed out

What's keeping xn--s3co0dzb.com from an A

Mail servers without IPv6
mx1.spacemail.com, mx2.spacemail.com 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

xn--s3co0dzb.com Has IPv6

A (IPv4)	172.67.179.140 104.21.43.132
AAAA (IPv6)	2606:4700:3033::6815:2b84 2606:4700:3030::ac43:b38c

www.xn--s3co0dzb.com Has IPv6

A (IPv4)	104.21.43.132 172.67.179.140
AAAA (IPv6)	2606:4700:3030::ac43:b38c 2606:4700:3033::6815:2b84

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: xn--s3co0dzb.com
Measured 2026-11-03 17:10:16 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.179.140, 104.21.43.132
AAAA (IPv6): 2606:4700:3033::6815:2b84, 2606:4700:3030::ac43:b38c
www AAAA:    2606:4700:3030::ac43:b38c, 2606:4700:3033::6815:2b84

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: xn--s3co0dzb.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3033::6815:2b84: answers (TCP 443)
    2606:4700:3030::ac43:b38c: answers (TCP 443)
- www over IPv6: www.xn--s3co0dzb.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3030::ac43:b38c: answers (TCP 443)
    2606:4700:3033::6815:2b84: 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): xn--s3co0dzb.com didn't complete an HTTPS request over IPv6 (timed out).
    https://xn--s3co0dzb.com/ via 2606:4700:3033::6815:2b84, certificate: valid (timed out)
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/nYUcIEnabG

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

Checked 2026-11-03 17:10:16 UTC. Full DNS report: dns.pizza/domain/xn--s3co0dzb.com · Age, certificate and blocklists: how.is/xn--s3co0dzb.com · JSON: /api/v1/xn--s3co0dzb.com