Yes — sereynne.com has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 sereynne.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::ac43:9157 answers · 443✓ 2606:4700:3032::6815:4780 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. emma.ns.cloudflare.com ✓remy.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://sereynne.com/ via 2606:4700:3037::ac43:9157 → 302https://sweet-term-870f.cloudflareaccess.com/cdn-cgi/access/login/sereynne.com?kid=04e8ed0f8546203c4858940ce52407145acdf48d3b5cd8f11214097b004278ee&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImJkZTY5ZjExZGNlMjU3NWRmMTg2ZGE3MDIxY2I4NzA1YjJkMDFkZjQ0NDJlYzRiZWMyNDYzYjBjMzExZTY0NWEifQ.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.LlqaWssiVXXNChTyrEMjURLVFQmzgzt28Gsw0uHgyGAmYJxWebl38MOIqsYOg1o6TDt0l6rw00367ss-b-gmTjtwTJq3tWoTWabPafG7iUg7Tnn8E8GFQ2EoDxtnTXcpaZhTDbRsJCR2XyCC6uauCA5YjMTdZ1wJCzwOmZKkn8UUvkqgEjMOy_A285uXWDyxd00VewzDXJXnfebWAkGTICn5P3n_fk5CNhDUjNfWxFdeLeVbVTSAvzj1ZIGjaHbXvaHGLo2fMjeiD30fpFBC3N7H1H_HYNnybW_JMf4nche0L28P0QtZ02rnOfXKBkwRVuDuKJrDk19KyYVYKCioNQ&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/sereynne.com.svg)](https://aaaa.bot/sereynne.com)

Check again

sereynne.com Has IPv6

A (IPv4)	104.21.71.128 172.67.145.87
AAAA (IPv6)	2606:4700:3037::ac43:9157 2606:4700:3032::6815:4780

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: sereynne.com
Measured 2026-11-08 15:40:45 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.71.128, 172.67.145.87
AAAA (IPv6): 2606:4700:3037::ac43:9157, 2606:4700:3032::6815:4780

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: sereynne.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::ac43:9157: answers (TCP 443)
    2606:4700:3032::6815:4780: 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://sereynne.com/ via 2606:4700:3037::ac43:9157 -> HTTP 302, certificate: valid
    https://sweet-term-870f.cloudflareaccess.com/cdn-cgi/access/login/sereynne.com?kid=04e8ed0f8546203c4858940ce52407145acdf48d3b5cd8f11214097b004278ee&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImJkZTY5ZjExZGNlMjU3NWRmMTg2ZGE3MDIxY2I4NzA1YjJkMDFkZjQ0NDJlYzRiZWMyNDYzYjBjMzExZTY0NWEifQ.eyJ0eXBlIjoibWV0YSIsImF1ZCI6IjA0ZThlZDBmODU0NjIwM2M0ODU4OTQwY2U1MjQwNzE0NWFjZGY0OGQzYjVjZDhmMTEyMTQwOTdiMDA0Mjc4ZWUiLCJob3N0bmFtZSI6InNlcmV5bm5lLmNvbSIsInJlZGlyZWN0X3VybCI6Ii8iLCJzZXJ2aWNlX3Rva2VuX3N0YXR1cyI6ZmFsc2UsImlzX3dhcnAiOmZhbHNlLCJpc19nYXRld2F5IjpmYWxzZSwiZXhwIjoxNzk0MTUyNzQ1LCJuYmYiOjE3OTQxNTI0NDUsImlhdCI6MTc5NDE1MjQ0NSwiYXV0aF9zdGF0dXMiOiJOT05FIiwibXRsc19hdXRoIjp7ImNlcnRfaXNzdWVyX2RuIjoiIiwiY2VydF9zZXJpYWwiOiIiLCJjZXJ0X2lzc3Vlcl9za2kiOiIiLCJjZXJ0X3ByZXNlbnRlZCI6ZmFsc2UsImNvbW1vbl9uYW1lIjoiIiwiYXV0aF9zdGF0dXMiOiJOT05FIn0sInJlYWxfY291bnRyeSI6IlVTIiwiYXBwX3Nlc3Npb25faGFzaCI6ImViZjgwNjY0OTJiZTM5MWI1YTNlOTE0YjY0Mjk5ODliMmVhNDg0NDgxYzcyYWMwM2EyYWM5ZGQyODZlMDk0ZmEifQ.LlqaWssiVXXNChTyrEMjURLVFQmzgzt28Gsw0uHgyGAmYJxWebl38MOIqsYOg1o6TDt0l6rw00367ss-b-gmTjtwTJq3tWoTWabPafG7iUg7Tnn8E8GFQ2EoDxtnTXcpaZhTDbRsJCR2XyCC6uauCA5YjMTdZ1wJCzwOmZKkn8UUvkqgEjMOy_A285uXWDyxd00VewzDXJXnfebWAkGTICn5P3n_fk5CNhDUjNfWxFdeLeVbVTSAvzj1ZIGjaHbXvaHGLo2fMjeiD30fpFBC3N7H1H_HYNnybW_JMf4nche0L28P0QtZ02rnOfXKBkwRVuDuKJrDk19KyYVYKCioNQ&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/sc9uloQ03U

Permanent link: aaaa.bot/r/sc9uloQ03U · How we measure

Checked 2026-11-08 15:40:45 UTC. Full DNS report: dns.pizza/domain/sereynne.com · Age, certificate and blocklists: how.is/sereynne.com · JSON: /api/v1/sereynne.com