IPv6
Measured 2026-11-01 15:56 UTC · aaaa.botWebsite, mail and DNS all work over IPv6.
The published IPv6 address accepted a connection when we tried it.
- ✓ census.gov answers (1 of 1 addresses)
- ✓ www.census.gov answers (4 of 4)
- ✓ Mail: 2 of 2 servers have IPv6
- ✓ Nameservers: 2 of 2 have IPv6
Details: published addresses and what answered
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.
| Name | Published address (AAAA) | Answers when we connect |
|---|---|---|
| census.gov | Published2610:20:2010:a05:1000:0:9481:4ba6 | Answers when we connect✓ answers on 443 |
| www.census.gov | Published2606:4700:78::90:0:1812606:4700:78::90:0:1822606:4700:78::90:0:1832606:4700:78::90:0:180 | Answers when we connect✓ answers on 443✓ answers on 443✓ answers on 443✓ answers on 443 |
Publishedmail1.census.govmail2.census.gov | Answers when we connect✓ has IPv6✓ has IPv6 | |
| Nameservers | Publishedns1e.census.govns2e.census.gov | Answers when we connect✓ has IPv6✓ has IPv6 |
Lineage
Our records: Nov 27, 2023 → Nov 1, 2026Oldest registry snapshot we hold: 2023 · 2 renewals on record. These dates are when our records begin, not when the domain was registered.
What changed
- IPv6 first measured: published, and answering on Nov 1, 2026census.gov has 1 IPv6 address. Grade A. Measured by aaaa.bot, 2026-11-01 15:56 UTC. No earlier IPv6 record is held, so this is not a "gained" date.
- Renewed +1 year between Aug 25, 2025 and Sep 17, 2025Expiry moved from 2025-09-30 to 2026-09-02, at get.gov.
- DNS moved to census.gov between Mar 29, 2025 and Apr 7, 2025a1-22.akam.net, a10-65.akam.net, a11-66.akam.net, a16-67.akam.net, a28-64.akam.net, a3-65.akam.net, ns1e.census.gov, ns2e.census.gov → ns1e.census.gov, ns2e.census.gov. Old set last seen in WHOIS on 2025-03-29; new set first seen in WHOIS on 2025-04-07.
- Renewed +1 year between Dec 27, 2023 and Jan 30, 2024Expiry moved from 2024-09-30 to 2025-09-30, at Cybersecurity and Infrastructure Security Agency.
Registrar and renewals: 81 WHOIS/RDAP snapshots, 2023-11-27 to 2026-05-17 (ledger built 2026-09-27). Every renewal
Nameservers, WHOIS snapshots: 65 WHOIS/RDAP snapshots that listed nameservers, 2023-11-27 to 2026-06-14 (who.is archive). A change is placed between the nearest observations on either side, from whichever source made them; where the two sources disagree, both are shown.
Hatched = the span we hold records for. A coloured bar runs only between observations that named the same registrar or operator; nothing is assumed in between.
Each mark sits at the first observation of the new state; its bracket runs back to the last observation of the old one.
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Explore related
Registered in 1997 — the same year as google.com, facebook.com and mail.ru.