Yes — sendecholab.info has IPv6.

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

This is a saved measurement from 2026-11-13 21:51 UTC. Check sendecholab.info live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 sendecholab.info has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::6815:27de answers · 443✓ 2606:4700:3033::ac43:9536 answers · 443	yes
www over IPv6 www.sendecholab.info has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::6815:27de answers · 443✓ 2606:4700:3033::ac43:9536 answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. sendecholab-info.mail.protection.outlook.com ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. albert.ns.cloudflare.com ✓elinore.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 403.

https://sendecholab.info/ via 2606:4700:3036::6815:27de → 301https://discover-echo.com/ via 2606:4700:10::6814:2701 → 403

works

Nothing keeping you from an A

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

Check again

sendecholab.info Has IPv6

A (IPv4)	104.21.39.222 172.67.149.54
AAAA (IPv6)	2606:4700:3036::6815:27de 2606:4700:3033::ac43:9536

www.sendecholab.info Has IPv6

A (IPv4)	104.21.39.222 172.67.149.54
AAAA (IPv6)	2606:4700:3036::6815:27de 2606:4700:3033::ac43:9536

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: sendecholab.info
Measured 2026-11-13 21:51:18 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.39.222, 172.67.149.54
AAAA (IPv6): 2606:4700:3036::6815:27de, 2606:4700:3033::ac43:9536
www AAAA:    2606:4700:3036::6815:27de, 2606:4700:3033::ac43:9536

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: sendecholab.info has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3036::6815:27de: answers (TCP 443)
    2606:4700:3033::ac43:9536: answers (TCP 443)
- www over IPv6: www.sendecholab.info has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3036::6815:27de: answers (TCP 443)
    2606:4700:3033::ac43:9536: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server 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 403.
    https://sendecholab.info/ via 2606:4700:3036::6815:27de -> HTTP 301, certificate: valid
    https://discover-echo.com/ via 2606:4700:10::6814:2701 -> HTTP 403, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/jnkOME5GDL

Permanent link: aaaa.bot/r/jnkOME5GDL · How we measure

Checked 2026-11-13 21:51:18 UTC. Full DNS report: dns.pizza/domain/sendecholab.info · Age, certificate and blocklists: how.is/sendecholab.info · JSON: /api/v1/sendecholab.info