Yes — barcodestudio.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 barcodestudio.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::6815:1acd answers · 443✓ 2606:4700:3036::ac43:a889 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. ajay.ns.cloudflare.com ✓maya.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://barcodestudio.app/ via 2606:4700:3037::6815:1acd → 302https://rough-sea-146a.cloudflareaccess.com/cdn-cgi/access/login/barcodestudio.app?kid=44a7a59417c1c512fb6a536924d3831157a55320de765e87fee02d13173035b2&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.pjubw7mTVwUisyrF5H3y0LMpu6cHzlNITq_JeUwZNfNeuzA8OVcTEOvIlfHlbaF_a_9WhpLdMwB5ezkUT3rbxfbJ6VG5ElB4D2-dW4M9kwMd0-W-TjwTNa9fGzs43MuOAGaCl2gZY9RIzzZuFfQOsN1ATZltqfj3oSq6OGdxsW0k4Ru9z0QRrURC1K5zjbcO1r_2N623whAMRsVdeAF8_GWdvelaVade4oZoMjHcbarR_NJV2slcQzzwlB04gMpPzSVXqaDl7HtHsjmv4iMpdBYKZ_TV1ZLV-Br5sfdUu--vEyU_bhiYNKZI7VZ-7dYBEvv9fYgMdg4wlDqrnZov9A&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/barcodestudio.app.svg)](https://aaaa.bot/barcodestudio.app)

Check again

barcodestudio.app Has IPv6

A (IPv4)	172.67.168.137 104.21.26.205
AAAA (IPv6)	2606:4700:3037::6815:1acd 2606:4700:3036::ac43:a889

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: barcodestudio.app
Measured 2026-11-10 08:50:04 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.168.137, 104.21.26.205
AAAA (IPv6): 2606:4700:3037::6815:1acd, 2606:4700:3036::ac43:a889

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: barcodestudio.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::6815:1acd: answers (TCP 443)
    2606:4700:3036::ac43:a889: 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://barcodestudio.app/ via 2606:4700:3037::6815:1acd -> HTTP 302, certificate: valid
    https://rough-sea-146a.cloudflareaccess.com/cdn-cgi/access/login/barcodestudio.app?kid=44a7a59417c1c512fb6a536924d3831157a55320de765e87fee02d13173035b2&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.eyJ3b3JrZXJfaWQiOiI2YzRjMWE2MDE2ZDI0NTdjOTI0NGZkNzIzZDE3ODEyNSIsInR5cGUiOiJtZXRhIiwiYXVkIjoiNDRhN2E1OTQxN2MxYzUxMmZiNmE1MzY5MjRkMzgzMTE1N2E1NTMyMGRlNzY1ZTg3ZmVlMDJkMTMxNzMwMzViMiIsImhvc3RuYW1lIjoiYmFyY29kZXN0dWRpby5hcHAiLCJyZWRpcmVjdF91cmwiOiIvIiwic2VydmljZV90b2tlbl9zdGF0dXMiOmZhbHNlLCJpc193YXJwIjpmYWxzZSwiaXNfZ2F0ZXdheSI6ZmFsc2UsImV4cCI6MTc5NDMwMDkwNCwibmJmIjoxNzk0MzAwNjA0LCJpYXQiOjE3OTQzMDA2MDQsImF1dGhfc3RhdHVzIjoiTk9ORSIsIm10bHNfYXV0aCI6eyJjZXJ0X2lzc3Vlcl9kbiI6IiIsImNlcnRfc2VyaWFsIjoiIiwiY2VydF9pc3N1ZXJfc2tpIjoiIiwiY2VydF9wcmVzZW50ZWQiOmZhbHNlLCJjb21tb25fbmFtZSI6IiIsImF1dGhfc3RhdHVzIjoiTk9ORSJ9LCJyZWFsX2NvdW50cnkiOiJVUyIsImFwcF9zZXNzaW9uX2hhc2giOiI2YzExYzY3NjVkN2NhYTNhMjQ4OTA1YWM3OTVhOWJjYTA5Yjk5M2NiYjZhYmVmZGI2ODY2ZDRlZjQyMjhlNGYzIn0.pjubw7mTVwUisyrF5H3y0LMpu6cHzlNITq_JeUwZNfNeuzA8OVcTEOvIlfHlbaF_a_9WhpLdMwB5ezkUT3rbxfbJ6VG5ElB4D2-dW4M9kwMd0-W-TjwTNa9fGzs43MuOAGaCl2gZY9RIzzZuFfQOsN1ATZltqfj3oSq6OGdxsW0k4Ru9z0QRrURC1K5zjbcO1r_2N623whAMRsVdeAF8_GWdvelaVade4oZoMjHcbarR_NJV2slcQzzwlB04gMpPzSVXqaDl7HtHsjmv4iMpdBYKZ_TV1ZLV-Br5sfdUu--vEyU_bhiYNKZI7VZ-7dYBEvv9fYgMdg4wlDqrnZov9A&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/6rIlp6lcV6

Permanent link: aaaa.bot/r/6rIlp6lcV6 · How we measure

Checked 2026-11-10 08:50:04 UTC. Full DNS report: dns.pizza/domain/barcodestudio.app · Age, certificate and blocklists: how.is/barcodestudio.app · JSON: /api/v1/barcodestudio.app