~/dnsniffer/tlds/rio.br·rank #1,003
▸ How many .rio.br domains are registered?
989
active .rio.br domains as of .
# rank #1,003 of all TLDs ▼ 3 in 30d# all records held: 1,138# snapshots: 19
~/tlds/rio.br/history·active domains
989
active .rio.br domains on 2026-09-04 · ▲ +987 (+49,350.00%) 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
▼ -1.79%
-18 domains
90 days
▲ +3.56%
+34 domains
1 year
▲ +31.52%
+237 domains
# faq
- ? How many .rio.br domains are registered?
- There are 989 active .rio.br domains as of September 4, 2026, according to DNSniffer’s daily count of zone-file and certificate-transparency records.
- ? Is .rio.br growing or shrinking?
- .rio.br has grown by 31.52% over the last year (+237 domains).
- ? Where does the .rio.br 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 .rio.br 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.