IPv6
Measured 2026-11-02 20:12 UTC · aaaa.botWorks over IPv6, with one gap: its mail servers lack IPv6.
mo.gov has 2 IPv6 addresses and answers on every one we tested.
- ✓ mo.gov answers (2 of 2 addresses)
- ✓ www.mo.gov answers (1 of 1)
- ✗ Mail: 0 of 2 servers have IPv6
- ✓ Nameservers: 4 of 4 have IPv6
Details: published addresses and what answered
Loads over IPv6 with a valid certificate: HTTP 200.
| Name | Published address (AAAA) | Answers when we connect |
|---|---|---|
| mo.gov | Published2a02:e980:d1::152a02:e980:d3::15 | Answers when we connect✓ answers on 443✓ answers on 443 |
| www.mo.gov | Published2a02:e980:d1::15 | Answers when we connect✓ answers on 443 |
Publishedmxa-0001d001.gslb.pphosted.commxb-0001d001.gslb.pphosted.com | Answers when we connect✗ no IPv6✗ no IPv6 | |
| Nameservers | Publishededns3.ultradns.bizedns3.ultradns.comedns3.ultradns.netedns3.ultradns.org | Answers when we connect✓ has IPv6✓ has IPv6✓ has IPv6✓ has IPv6 |
Lineage
Our records: Dec 13, 2023 → Nov 2, 2026Oldest registry snapshot we hold: 2023 · 2 renewals on record. These dates are when our records begin, not when the domain was registered.
Registrar
- Cybersecurity and Infrastructure Security AgencyDec 2023 – Feb 2024
- get.govlast seen Aug 2025Jul – Aug 2025
DNS provider
- UltraDNS (Neustar/Vercara)Dec 2023 – Jun 2026
IPv6
- IPv6published, and answeringFirst measured Nov 2026
What changed
- IPv6 first measured: published, and answering on Nov 2, 2026mo.gov has 2 IPv6 addresses. Grade B. Measured by aaaa.bot, 2026-11-02 00:07 UTC. No earlier IPv6 record is held, so this is not a "gained" date.
- Renewed +1 year between Jul 3, 2025 and Aug 8, 2025Expiry moved from 2025-09-14 to 2026-08-05, at get.gov.
- Renewed +1 year between Dec 27, 2023 and Feb 11, 2024Expiry moved from 2024-09-14 to 2025-09-14, at Cybersecurity and Infrastructure Security Agency.
Solid bar: the stretch we observed that name. Dot: a single sighting. Dotted line: no record between sightings of the same name. Nothing is drawn between different names.
Registrar and renewals: 48 WHOIS/RDAP snapshots, 2023-12-13 to 2026-05-16 (ledger built 2026-09-27). Every renewal
DNS provider, WHOIS snapshots: 39 WHOIS/RDAP snapshots that listed nameservers, 2023-12-13 to 2026-06-22 (who.is archive). Both sources feed one row per provider (hover a bar to see which); a change is placed between the nearest observations on either side, and where the two sources disagree, both are listed under What changed.
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