state.gov publishes IPv6 but doesn't answer on it.

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

F
IPv6 readiness
Publishes IPv6 but doesn't answer on it — worse than having none.
Website over IPv6
state.gov has an AAAA record, but nothing answered on ports 443 or 80. IPv6 visitors wait for a timeout before falling back to IPv4.
✗ 2600:1f10:4617:d340:6535:2eb1:e4db:244d no answer✗ 2600:1f18:3a6e:b641:e65a:ee0e:a6dc:89f4 no answer✗ 2600:1f18:7400:4a95:de75:7fa3:6311:a663 no answer
broken
www over IPv6
www.state.gov has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
✓ 2600:9000:286a:1e00:1f:e8cc:9e00:93a1 answers · 443✓ 2600:9000:286a:1400:1f:e8cc:9e00:93a1 answers · 443✓ 2600:9000:286a:7200:1f:e8cc:9e00:93a1 answers · 443✓ 2600:9000:286a:7000:1f:e8cc:9e00:93a1 answers · 443– 2600:9000:286a:de00:1f:e8cc:9e00:93a1 not tested– 2600:9000:286a:9c00:1f:e8cc:9e00:93a1 not tested– 2600:9000:286a:3a00:1f:e8cc:9e00:93a1 not tested– 2600:9000:286a:7c00:1f:e8cc:9e00:93a1 not tested
yes
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
usdos.mail.protection.outlook.com ✓
yes
Nameservers have IPv6
6 of 6 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
a1-63.akam.net ✓a3-66.akam.net ✓a8-67.akam.net ✓a9-64.akam.net ✓a14-64.akam.net ✓a26-65.akam.net ✓
yes
 Load state.gov over IPv6 from up to six other places — a second opinion.

What's keeping state.gov from an A

  1. Fix or remove the AAAA record for state.gov
    Something published an IPv6 address but nothing answers on it, so IPv6 visitors wait for a timeout first. Either make the server listen on IPv6 (and allow ports 443/80 through its firewall), or delete the AAAA record until it does.

Check again

state.gov  Has IPv6

A (IPv4)34.233.146.45
100.28.244.61
107.22.78.153
AAAA (IPv6)2600:1f10:4617:d340:6535:2eb1:e4db:244d
2600:1f18:3a6e:b641:e65a:ee0e:a6dc:89f4
2600:1f18:7400:4a95:de75:7fa3:6311:a663

www.state.gov  Has IPv6

Alias ofd3u14l01bhvgjc.cloudfront.net
A (IPv4)3.170.3.45
3.170.3.116
3.170.3.17
3.170.3.105
AAAA (IPv6)2600:9000:286a:1e00:1f:e8cc:9e00:93a1
2600:9000:286a:1400:1f:e8cc:9e00:93a1
2600:9000:286a:7200:1f:e8cc:9e00:93a1
2600:9000:286a:7000:1f:e8cc:9e00:93a1
2600:9000:286a:de00:1f:e8cc:9e00:93a1
2600:9000:286a:9c00:1f:e8cc:9e00:93a1
2600:9000:286a:3a00:1f:e8cc:9e00:93a1
2600:9000:286a:7c00:1f:e8cc:9e00:93a1

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

 Permanent link: aaaa.bot/r/OVz9TlGtOV · How we measure

Checked 2026-10-31 06:04:33 UTC — one of the top 1,000 sites, re-checked weekly. Re-check now. Full DNS report: dns.pizza/domain/state.gov · JSON: /api/v1/state.gov