~/dnsniffer/tlds/in-addr.arpa·rank #4,255
▸ How many .in-addr.arpa domains are registered?
4
active .in-addr.arpa domains as of .
# rank #4,255 of all TLDs ▼ 1 in 30d# all records held: 4# snapshots: 19
~/tlds/in-addr.arpa/history·active domains
4
active .in-addr.arpa domains on 2026-09-05 · ▲ +1 (+33.33%) since 2025-07-31
# y-axis starts at 2.88, 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
▲ +0.00%
+0 domains
1 year
▲ +33.33%
+1 domains
# faq
- ? How many .in-addr.arpa domains are registered?
- There are 4 active .in-addr.arpa domains as of September 5, 2026, according to DNSniffer’s daily count of zone-file and certificate-transparency records.
- ? Is .in-addr.arpa growing or shrinking?
- .in-addr.arpa has grown by 33.33% over the last year (+1 domains).
- ? Where does the .in-addr.arpa 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 .in-addr.arpa 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.