Yes — 27b.world has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 27b.world has 2 IPv6 addresses and answers on every one we tested. ✓ 2a06:98c1:3100::ac40:9244 answers · 443✓ 2606:4700:4409::6812:29bc answers · 443	yes
www over IPv6 www.27b.world has 2 IPv6 addresses and answers on every one we tested. ✓ 2a06:98c1:3100::ac40:9244 answers · 443✓ 2606:4700:4409::6812:29bc 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 4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ns2bkr.name.com ✓ns4bht.name.com ✓ns3cna.name.com ✓ns1cnb.name.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
27b.world didn't complete an HTTPS request over IPv6 (ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE).

https://27b.world/ via 2a06:98c1:3100::ac40:9244 · ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE

Nothing keeping you from an A

Nothing to fix
Show it off: add the badge to your README.
[![IPv6](https://aaaa.bot/badge/27b.world.svg)](https://aaaa.bot/27b.world)

Check again

27b.world Has IPv6

Alias of	tiaozhuan-9766803.l-w-q-j.com
A (IPv4)	172.64.146.68 104.18.41.188
AAAA (IPv6)	2a06:98c1:3100::ac40:9244 2606:4700:4409::6812:29bc

www.27b.world Has IPv6

Alias of	tiaozhuan-9766803.l-w-q-j.com
A (IPv4)	104.18.41.188 172.64.146.68
AAAA (IPv6)	2a06:98c1:3100::ac40:9244 2606:4700:4409::6812:29bc

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: 27b.world
Measured 2026-11-13 15:50:16 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.64.146.68, 104.18.41.188
AAAA (IPv6): 2a06:98c1:3100::ac40:9244, 2606:4700:4409::6812:29bc
www AAAA:    2a06:98c1:3100::ac40:9244, 2606:4700:4409::6812:29bc

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: 27b.world has 2 IPv6 addresses and answers on every one we tested.
    2a06:98c1:3100::ac40:9244: answers (TCP 443)
    2606:4700:4409::6812:29bc: answers (TCP 443)
- www over IPv6: www.27b.world has 2 IPv6 addresses and answers on every one we tested.
    2a06:98c1:3100::ac40:9244: answers (TCP 443)
    2606:4700:4409::6812:29bc: 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: 4 of 4 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): 27b.world didn't complete an HTTPS request over IPv6 (ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE).
    https://27b.world/ via 2a06:98c1:3100::ac40:9244 (ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE)
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/ASjiJKiI1z

Permanent link: aaaa.bot/r/ASjiJKiI1z · How we measure

Checked 2026-11-13 15:50:16 UTC. Full DNS report: dns.pizza/domain/27b.world · Age, certificate and blocklists: how.is/27b.world · JSON: /api/v1/27b.world