Yes — swtemplate.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 swtemplate.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3032::6815:1393 answers · 443✓ 2606:4700:3032::ac43:ba83 answers · 443	yes
Mail servers (MX) have IPv6 No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record.	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. lennon.ns.cloudflare.com ✓nataly.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://swtemplate.app/ via 2606:4700:3032::6815:1393 → 302https://ancient-haze-2566.cloudflareaccess.com/cdn-cgi/access/login/swtemplate.app?kid=fb708f476dd40caabb90f1e024ae6f867e3b1d5d8df7fc53dfe6a90716f78759&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.Lmj0iTOCvwQLP2jCr1s3Lq-ZnOlATNWn_dd2RL9kmTFK8MDcKiWtnTFaaO-MjC5Fn6PSAUTwfazgCq8pVWiruzRJCVidEoqOCCmp4m8gzSQvuoCk4HAtNYRMH6xurqTn7uTO-CHOk1Z8vh2nSoAyhJX0st_0BxTFhX0zDeHMnNTT_k5HJG6W9bfIEZRXh0qjA9OKAtb3if77Lxe-b5h1fDIzwM_0ollp7ZAc_yrZlFTjeAq1XIhdXtLCGEzAOSMKZ6hGxG705r1e5u1Ty_fTFZj7iMOLdR1KgrgqbAomxFhEuAbCiYA8iSiqcS3kt_ib9962qs3Ps4TUrHnbds8aJA&redirect_url=%2F via 2606:4700:300a::6813:c31d → 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/swtemplate.app.svg)](https://aaaa.bot/swtemplate.app)

Check again

swtemplate.app Has IPv6

A (IPv4)	104.21.19.147 172.67.186.131
AAAA (IPv6)	2606:4700:3032::6815:1393 2606:4700:3032::ac43:ba83

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: swtemplate.app
Measured 2026-11-04 09:37:26 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.19.147, 172.67.186.131
AAAA (IPv6): 2606:4700:3032::6815:1393, 2606:4700:3032::ac43:ba83

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: swtemplate.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3032::6815:1393: answers (TCP 443)
    2606:4700:3032::ac43:ba83: answers (TCP 443)
- Mail servers (MX) have IPv6: No MX records, so mail goes to the domain's own address (implicit MX). It 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://swtemplate.app/ via 2606:4700:3032::6815:1393 -> HTTP 302, certificate: valid
    https://ancient-haze-2566.cloudflareaccess.com/cdn-cgi/access/login/swtemplate.app?kid=fb708f476dd40caabb90f1e024ae6f867e3b1d5d8df7fc53dfe6a90716f78759&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.Lmj0iTOCvwQLP2jCr1s3Lq-ZnOlATNWn_dd2RL9kmTFK8MDcKiWtnTFaaO-MjC5Fn6PSAUTwfazgCq8pVWiruzRJCVidEoqOCCmp4m8gzSQvuoCk4HAtNYRMH6xurqTn7uTO-CHOk1Z8vh2nSoAyhJX0st_0BxTFhX0zDeHMnNTT_k5HJG6W9bfIEZRXh0qjA9OKAtb3if77Lxe-b5h1fDIzwM_0ollp7ZAc_yrZlFTjeAq1XIhdXtLCGEzAOSMKZ6hGxG705r1e5u1Ty_fTFZj7iMOLdR1KgrgqbAomxFhEuAbCiYA8iSiqcS3kt_ib9962qs3Ps4TUrHnbds8aJA&redirect_url=%2F via 2606:4700:300a::6813:c31d -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/7iMWF4RKU6

Permanent link: aaaa.bot/r/7iMWF4RKU6 · How we measure

Checked 2026-11-04 09:37:26 UTC. Full DNS report: dns.pizza/domain/swtemplate.app · Age, certificate and blocklists: how.is/swtemplate.app · JSON: /api/v1/swtemplate.app