Yes — 20150526.xyz has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 20150526.xyz has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3035::ac43:aca2 answers · 443✓ 2606:4700:3036::6815:37c6 answers · 443	yes
www over IPv6 www.20150526.xyz has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::6815:37c6 answers · 443✓ 2606:4700:3035::ac43:aca2 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. etta.ns.cloudflare.com ✓vicky.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 2 redirects: HTTP 200.

https://20150526.xyz/ via 2606:4700:3035::ac43:aca2 → 302https://170247.xyz/ via 2606:4700:3033::6815:576a → 302https://svt17.cloudflareaccess.com/cdn-cgi/access/login/170247.xyz?kid=d1499b85dc469881201e99affabd9697a9732b0f4985360b11cd6290c4bb9e43&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijk3YjVhMjBiMjYxOWZlNWYxZWI1YzdjZDlhMzg4YTgwMWNiYjNhYzljNTk1NzlhZjBlMTcxN2RlNmM5YTc4M2MifQ.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.3p69DOzdE1OHW7UZZSYPq8GaLXm1joi2OckFTk3S-hhjnrjYnKw6s0-chH5TJZHn4vZgX9o1ZUE2gLFtn2rBlGS9mX3nyJ7dCXLUeZ9SU4ptAq4sow1S6t40u8ZgYzTNGuKzCoWIU-o_eDHo1cUvetRzgqsGxR2VhoqBzec3EM5FX2Hfl6EEnIx8mUfE8FcBWMA7RdIT9VeIEzGZ-NP4fqS4B-prvKNj5eBuD2puo8incJb8AsZZPBIbgQVSK1ZMA8D4cf3wiSZVZSv4Y_htEGm5T4LiKDvyQqa8r_TNvBpIo61Qlt3G9xX7aZzCHF_uV2RPKlQo9VoNnWKYcbY70g&redirect_url=%2F via 2606:4700:300a::6813:c21d → 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/20150526.xyz.svg)](https://aaaa.bot/20150526.xyz)

Check again

20150526.xyz Has IPv6

A (IPv4)	104.21.55.198 172.67.172.162
AAAA (IPv6)	2606:4700:3035::ac43:aca2 2606:4700:3036::6815:37c6

www.20150526.xyz Has IPv6

A (IPv4)	172.67.172.162 104.21.55.198
AAAA (IPv6)	2606:4700:3036::6815:37c6 2606:4700:3035::ac43:aca2

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: 20150526.xyz
Measured 2026-11-04 13:58:39 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.55.198, 172.67.172.162
AAAA (IPv6): 2606:4700:3035::ac43:aca2, 2606:4700:3036::6815:37c6
www AAAA:    2606:4700:3036::6815:37c6, 2606:4700:3035::ac43:aca2

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: 20150526.xyz has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3035::ac43:aca2: answers (TCP 443)
    2606:4700:3036::6815:37c6: answers (TCP 443)
- www over IPv6: www.20150526.xyz has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3036::6815:37c6: answers (TCP 443)
    2606:4700:3035::ac43:aca2: 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 2 redirects: HTTP 200.
    https://20150526.xyz/ via 2606:4700:3035::ac43:aca2 -> HTTP 302, certificate: valid
    https://170247.xyz/ via 2606:4700:3033::6815:576a -> HTTP 302, certificate: valid
    https://svt17.cloudflareaccess.com/cdn-cgi/access/login/170247.xyz?kid=d1499b85dc469881201e99affabd9697a9732b0f4985360b11cd6290c4bb9e43&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijk3YjVhMjBiMjYxOWZlNWYxZWI1YzdjZDlhMzg4YTgwMWNiYjNhYzljNTk1NzlhZjBlMTcxN2RlNmM5YTc4M2MifQ.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.3p69DOzdE1OHW7UZZSYPq8GaLXm1joi2OckFTk3S-hhjnrjYnKw6s0-chH5TJZHn4vZgX9o1ZUE2gLFtn2rBlGS9mX3nyJ7dCXLUeZ9SU4ptAq4sow1S6t40u8ZgYzTNGuKzCoWIU-o_eDHo1cUvetRzgqsGxR2VhoqBzec3EM5FX2Hfl6EEnIx8mUfE8FcBWMA7RdIT9VeIEzGZ-NP4fqS4B-prvKNj5eBuD2puo8incJb8AsZZPBIbgQVSK1ZMA8D4cf3wiSZVZSv4Y_htEGm5T4LiKDvyQqa8r_TNvBpIo61Qlt3G9xX7aZzCHF_uV2RPKlQo9VoNnWKYcbY70g&redirect_url=%2F via 2606:4700:300a::6813:c21d -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/s-_Tx4WiuU

Permanent link: aaaa.bot/r/s-_Tx4WiuU · How we measure

Checked 2026-11-04 13:58:39 UTC. Full DNS report: dns.pizza/domain/20150526.xyz · Age, certificate and blocklists: how.is/20150526.xyz · JSON: /api/v1/20150526.xyz