~/dnsniffer/tlds/uol·rank #2149
$ dnsniffer count --tld uol --active
▸ How many .uol domains are registered?
61
active .uol domains as of .
# rank #2149 of all TLDs# all records held: 67# snapshots: 15
~/tlds/uol/history·active domains
61
active uol domains on 2026-08-31 · ▲ +3 (+5.17%) since 2025-06-30
# y-axis starts at 57.64, 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
▲ +0.00%
+0 domains
90 days
▲ +5.17%
+3 domains
1 year
▲ +5.17%
+3 domains
# faq
- ? How many .uol domains are registered?
- There are 61 active .uol domains as of August 31, 2026, according to DNSniffer's daily count of zone-file and certificate-transparency records.
- ? Is .uol growing or shrinking?
- .uol has grown by 5.17% over the last year (+3 domains).
- ? Where does the .uol 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 .uol 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.