~/dnsniffer/tlds/ac.th·rank #678
▸ How many .ac.th domains are registered?
4,116
active .ac.th domains as of .
# rank #678 of all TLDs ▲ 2 in 30d# all records held: 4,454# snapshots: 19
~/tlds/ac.th/history·active domains
4,116
active .ac.th domains on 2026-09-04 · ▲ +4,075 (+9,939.02%) since 2025-06-30
# y-axis starts at 0, not zero - domain counts move by fractions of a percent a day. Dashed segments are estimated: reconstructed from certificate first-seen dates before daily snapshots began, not measured on the day.
# change over time
30 days
▼ -1.32%
-55 domains
90 days
▲ +2.93%
+117 domains
1 year
▲ +22.76%
+763 domains
# faq
- ? How many .ac.th domains are registered?
- There are 4,116 active .ac.th domains as of September 4, 2026, according to DNSniffer’s daily count of zone-file and certificate-transparency records.
- ? Is .ac.th growing or shrinking?
- .ac.th has grown by 22.76% over the last year (+763 domains).
- ? Where does the .ac.th domain count come from?
- We ingest ICANN CZDS zone files and Certificate Transparency logs continuously and snapshot the per-TLD count once a day. A .ac.th domain is counted as active if it appeared in a zone file in the last 2 days, or - where no zone file is published - if a certificate was issued for it in the last 12 months.