Yes — zeroeffortlab.com has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 zeroeffortlab.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::6815:4dad answers · 443✓ 2606:4700:3031::ac43:d29c answers · 443	yes
www over IPv6 www.zeroeffortlab.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::6815:4dad answers · 443✓ 2606:4700:3031::ac43:d29c answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. route3.mx.cloudflare.net ✓route1.mx.cloudflare.net ✓route2.mx.cloudflare.net ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. earl.ns.cloudflare.com ✓tia.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://zeroeffortlab.com/ via 2606:4700:3037::6815:4dad → 302https://fragrant-mouse-d78a.cloudflareaccess.com/cdn-cgi/access/login/zeroeffortlab.com?kid=793fbc045b4e910d7848acd5c68903d5a4d7e6012aca98ce18447dfd10551450&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImVlYjEwOWM0Y2YwNzFiOGMyZmVmOWY0MzE3ZTc2MWViYTdiYWVjZTU3NDlmOGIwZmIwYWU1ZDBmNDA0NWRhMDEifQ.eyJ0eXBlIjoibWV0YSIsImF1ZCI6Ijc5M2ZiYzA0NWI0ZTkxMGQ3ODQ4YWNkNWM2ODkwM2Q1YTRkN2U2MDEyYWNhOThjZTE4NDQ3ZGZkMTA1NTE0NTAiLCJob3N0bmFtZSI6Inplcm9lZmZvcnRsYWIuY29tIiwicmVkaXJlY3RfdXJsIjoiLyIsInNlcnZpY2VfdG9rZW5fc3RhdHVzIjpmYWxzZSwiaXNfd2FycCI6ZmFsc2UsImlzX2dhdGV3YXkiOmZhbHNlLCJleHAiOjE3OTQzOTM2MDEsIm5iZiI6MTc5NDM5MzMwMSwiaWF0IjoxNzk0MzkzMzAxLCJhdXRoX3N0YXR1cyI6Ik5PTkUiLCJtdGxzX2F1dGgiOnsiY2VydF9pc3N1ZXJfZG4iOiIiLCJjZXJ0X3NlcmlhbCI6IiIsImNlcnRfaXNzdWVyX3NraSI6IiIsImNlcnRfcHJlc2VudGVkIjpmYWxzZSwiY29tbW9uX25hbWUiOiIiLCJhdXRoX3N0YXR1cyI6Ik5PTkUifSwicmVhbF9jb3VudHJ5IjoiVVMiLCJhcHBfc2Vzc2lvbl9oYXNoIjoiYWM4NTUyZDRhNjE1NWVlMTU3ZjE0YzA1MGMyNDdlZjc3M2Y4MDgzMTBlYjE1YWE5MDhjNDA2OGI4ODJkODI5ZCJ9.qWZVuCiB0Gm1ZGUE_MVo1f1C9gNZffxOxp31ezQbEti5YsbiO5OZKnWVz9J7RJCuJngti4cuSuFytbnpPXbcRCEH-1kdXgJdE66a0cKPwuN_P4EK6d03h-LcWVWn2Qw_v64j_qFD7ilq1LT_2XaGxy4NpOhD_-ePfj2mGZLqZHkWpfXy8_0TvFL5Sny7xbe3T9Z0hv-bvDIk9ZYTF90pwgmOgKRnZkIYv2fGFnYJHVT8-_w2o45OFlD94iXWujBQI5Is-OqV0F5kvovH3rUcMRjZVuARU2TUZ-JHkkLAKmU-4iTFc8-vcH6RA-wp__-5U5m8vdddvg3foa03BI901g&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/zeroeffortlab.com.svg)](https://aaaa.bot/zeroeffortlab.com)

Check again

zeroeffortlab.com Has IPv6

A (IPv4)	172.67.210.156 104.21.77.173
AAAA (IPv6)	2606:4700:3037::6815:4dad 2606:4700:3031::ac43:d29c

www.zeroeffortlab.com Has IPv6

A (IPv4)	172.67.210.156 104.21.77.173
AAAA (IPv6)	2606:4700:3037::6815:4dad 2606:4700:3031::ac43:d29c

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: zeroeffortlab.com
Measured 2026-11-11 10:35:01 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.210.156, 104.21.77.173
AAAA (IPv6): 2606:4700:3037::6815:4dad, 2606:4700:3031::ac43:d29c
www AAAA:    2606:4700:3037::6815:4dad, 2606:4700:3031::ac43:d29c

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: zeroeffortlab.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::6815:4dad: answers (TCP 443)
    2606:4700:3031::ac43:d29c: answers (TCP 443)
- www over IPv6: www.zeroeffortlab.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::6815:4dad: answers (TCP 443)
    2606:4700:3031::ac43:d29c: 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 200.
    https://zeroeffortlab.com/ via 2606:4700:3037::6815:4dad -> HTTP 302, certificate: valid
    https://fragrant-mouse-d78a.cloudflareaccess.com/cdn-cgi/access/login/zeroeffortlab.com?kid=793fbc045b4e910d7848acd5c68903d5a4d7e6012aca98ce18447dfd10551450&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImVlYjEwOWM0Y2YwNzFiOGMyZmVmOWY0MzE3ZTc2MWViYTdiYWVjZTU3NDlmOGIwZmIwYWU1ZDBmNDA0NWRhMDEifQ.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.qWZVuCiB0Gm1ZGUE_MVo1f1C9gNZffxOxp31ezQbEti5YsbiO5OZKnWVz9J7RJCuJngti4cuSuFytbnpPXbcRCEH-1kdXgJdE66a0cKPwuN_P4EK6d03h-LcWVWn2Qw_v64j_qFD7ilq1LT_2XaGxy4NpOhD_-ePfj2mGZLqZHkWpfXy8_0TvFL5Sny7xbe3T9Z0hv-bvDIk9ZYTF90pwgmOgKRnZkIYv2fGFnYJHVT8-_w2o45OFlD94iXWujBQI5Is-OqV0F5kvovH3rUcMRjZVuARU2TUZ-JHkkLAKmU-4iTFc8-vcH6RA-wp__-5U5m8vdddvg3foa03BI901g&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/LLaU58l0yC

Permanent link: aaaa.bot/r/LLaU58l0yC · How we measure

Checked 2026-11-11 10:35:01 UTC. Full DNS report: dns.pizza/domain/zeroeffortlab.com · Age, certificate and blocklists: how.is/zeroeffortlab.com · JSON: /api/v1/zeroeffortlab.com