Yes — smmstack.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 smmstack.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:bbfb:fb8c:fb24:dcaa:abc8 answers · 443✓ 2a02:4780:84:c584:4878:4bf2:3a52:88a5 answers · 443	yes
www over IPv6 www.smmstack.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:2f67:3c91:5626:e144:72ef answers · 443✓ 2a02:4780:84:3f23:c6e0:4f77:d895:b2f answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. mx1.hostinger.com ✓mx2.hostinger.com ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. athena.dns-parking.com ✓apollo.dns-parking.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.

https://smmstack.app/ via 2a02:4780:84:bbfb:fb8c:fb24:dcaa:abc8 → 200

works

Nothing keeping you from an A

Nothing to fix
Show it off: add the badge to your README.
[![IPv6](https://aaaa.bot/badge/smmstack.app.svg)](https://aaaa.bot/smmstack.app)

Check again

smmstack.app Has IPv6

A (IPv4)	2.57.91.220 84.32.84.68
AAAA (IPv6)	2a02:4780:84:bbfb:fb8c:fb24:dcaa:abc8 2a02:4780:84:c584:4878:4bf2:3a52:88a5

www.smmstack.app Has IPv6

Alias of	www.smmstack.app.cdn.hstgr.net
A (IPv4)	212.1.212.217 191.101.104.175
AAAA (IPv6)	2a02:4780:84:2f67:3c91:5626:e144:72ef 2a02:4780:84:3f23:c6e0:4f77:d895:b2f

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: smmstack.app
Measured 2026-11-05 22:53:43 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    2.57.91.220, 84.32.84.68
AAAA (IPv6): 2a02:4780:84:bbfb:fb8c:fb24:dcaa:abc8, 2a02:4780:84:c584:4878:4bf2:3a52:88a5
www AAAA:    2a02:4780:84:2f67:3c91:5626:e144:72ef, 2a02:4780:84:3f23:c6e0:4f77:d895:b2f

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: smmstack.app has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:bbfb:fb8c:fb24:dcaa:abc8: answers (TCP 443)
    2a02:4780:84:c584:4878:4bf2:3a52:88a5: answers (TCP 443)
- www over IPv6: www.smmstack.app has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:2f67:3c91:5626:e144:72ef: answers (TCP 443)
    2a02:4780:84:3f23:c6e0:4f77:d895:b2f: 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): Loads over IPv6 with a valid certificate: HTTP 200.
    https://smmstack.app/ via 2a02:4780:84:bbfb:fb8c:fb24:dcaa:abc8 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/_KGQDaoDQo

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

Checked 2026-11-05 22:53:43 UTC. Full DNS report: dns.pizza/domain/smmstack.app · Age, certificate and blocklists: how.is/smmstack.app · JSON: /api/v1/smmstack.app