Yes — hifiswap-telegramwebapp.icu has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 hifiswap-telegramwebapp.icu has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::6815:37ce answers · 443✓ 2606:4700:3031::ac43:acc9 answers · 443	yes
www over IPv6 www.hifiswap-telegramwebapp.icu has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::6815:37ce answers · 443✓ 2606:4700:3031::ac43:acc9 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. cullen.ns.cloudflare.com ✓kristin.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 404.

https://hifiswap-telegramwebapp.icu/ via 2606:4700:3033::6815:37ce → 404

works

Nothing keeping you from an A

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

Check again

hifiswap-telegramwebapp.icu Has IPv6

A (IPv4)	104.21.55.206 172.67.172.201
AAAA (IPv6)	2606:4700:3033::6815:37ce 2606:4700:3031::ac43:acc9

www.hifiswap-telegramwebapp.icu Has IPv6

A (IPv4)	172.67.172.201 104.21.55.206
AAAA (IPv6)	2606:4700:3033::6815:37ce 2606:4700:3031::ac43:acc9

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: hifiswap-telegramwebapp.icu
Measured 2026-11-03 16:13:47 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.55.206, 172.67.172.201
AAAA (IPv6): 2606:4700:3033::6815:37ce, 2606:4700:3031::ac43:acc9
www AAAA:    2606:4700:3033::6815:37ce, 2606:4700:3031::ac43:acc9

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: hifiswap-telegramwebapp.icu has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3033::6815:37ce: answers (TCP 443)
    2606:4700:3031::ac43:acc9: answers (TCP 443)
- www over IPv6: www.hifiswap-telegramwebapp.icu has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3033::6815:37ce: answers (TCP 443)
    2606:4700:3031::ac43:acc9: 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: HTTP 404.
    https://hifiswap-telegramwebapp.icu/ via 2606:4700:3033::6815:37ce -> HTTP 404, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/26var1Rk7x

Permanent link: aaaa.bot/r/26var1Rk7x · How we measure

Checked 2026-11-03 16:13:47 UTC. Full DNS report: dns.pizza/domain/hifiswap-telegramwebapp.icu · Age, certificate and blocklists: how.is/hifiswap-telegramwebapp.icu · JSON: /api/v1/hifiswap-telegramwebapp.icu