Yes — selectintelligence.org has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 selectintelligence.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::ac43:da59 answers · 443✓ 2606:4700:3032::6815:186f answers · 443	yes
www over IPv6 www.selectintelligence.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3032::6815:186f answers · 443✓ 2606:4700:3036::ac43:da59 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. natasha.ns.cloudflare.com ✓ram.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://selectintelligence.org/ via 2606:4700:3036::ac43:da59 → 302https://selectintelligence.cloudflareaccess.com/cdn-cgi/access/login/selectintelligence.org?kid=c231acd123645cb47f61735cc578a0ae8c9e17407faffcda5387d4759f033466&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.sBYpYhWcAl0RI8HIEHyR07ObPlexrkgII4PL9ctTIW3_gGzGeOceqg48EDGaqZO-YzRMLn9-Ks-BQn6WGN2WXWTP0VgU_ZnRlqouawpAbF64hvRJBF6aCZ1EoS8MJjqUl4RJc2JeBN09hngA2bVYW3ederr-3_4_fuo13KbnLrHOtR0ZXvZ8eTQe5_76k6k7Xyo9Tp32wkYnA7RlZ2n6anpiUENBsF5gN1WZvfwY_ulp3wf5o5Fk4z-0x5yCKdAwMEwW1i7KTVpqW5TQoax_Gss71lCLmGlXysyN7dho7GqEtkO45VWxyZT7XdLhXnKbPx2ZSEjHgBuyQ63TS2CPrw&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/selectintelligence.org.svg)](https://aaaa.bot/selectintelligence.org)

Check again

selectintelligence.org Has IPv6

A (IPv4)	104.21.24.111 172.67.218.89
AAAA (IPv6)	2606:4700:3036::ac43:da59 2606:4700:3032::6815:186f

www.selectintelligence.org Has IPv6

A (IPv4)	104.21.24.111 172.67.218.89
AAAA (IPv6)	2606:4700:3032::6815:186f 2606:4700:3036::ac43:da59

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: selectintelligence.org
Measured 2026-11-01 02:53:30 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.24.111, 172.67.218.89
AAAA (IPv6): 2606:4700:3036::ac43:da59, 2606:4700:3032::6815:186f
www AAAA:    2606:4700:3032::6815:186f, 2606:4700:3036::ac43:da59

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: selectintelligence.org has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3036::ac43:da59: answers (TCP 443)
    2606:4700:3032::6815:186f: answers (TCP 443)
- www over IPv6: www.selectintelligence.org has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3032::6815:186f: answers (TCP 443)
    2606:4700:3036::ac43:da59: 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://selectintelligence.org/ via 2606:4700:3036::ac43:da59 -> HTTP 302, certificate: valid
    https://selectintelligence.cloudflareaccess.com/cdn-cgi/access/login/selectintelligence.org?kid=c231acd123645cb47f61735cc578a0ae8c9e17407faffcda5387d4759f033466&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.sBYpYhWcAl0RI8HIEHyR07ObPlexrkgII4PL9ctTIW3_gGzGeOceqg48EDGaqZO-YzRMLn9-Ks-BQn6WGN2WXWTP0VgU_ZnRlqouawpAbF64hvRJBF6aCZ1EoS8MJjqUl4RJc2JeBN09hngA2bVYW3ederr-3_4_fuo13KbnLrHOtR0ZXvZ8eTQe5_76k6k7Xyo9Tp32wkYnA7RlZ2n6anpiUENBsF5gN1WZvfwY_ulp3wf5o5Fk4z-0x5yCKdAwMEwW1i7KTVpqW5TQoax_Gss71lCLmGlXysyN7dho7GqEtkO45VWxyZT7XdLhXnKbPx2ZSEjHgBuyQ63TS2CPrw&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/Zyr6azHrEt

Permanent link: aaaa.bot/r/Zyr6azHrEt · How we measure

Checked 2026-11-01 02:53:30 UTC. Full DNS report: dns.pizza/domain/selectintelligence.org · JSON: /api/v1/selectintelligence.org