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▸ How many .book domains are registered?

10

active .book domains as of .

# rank #3,393 of all TLDs# all records held: 13# snapshots: 58
search .book domains download the .book dataset
~/tlds/book/history·active domains
10
active .book domains on 2026-10-13
02.85.68.411.22025-06-30: 0 active2025-07-31: 0 active2025-08-31: 0 active2025-09-30: 0 active2025-10-31: 0 active2025-11-30: 0 active2025-12-31: 0 active2026-01-31: 0 active2026-02-28: 0 active2026-03-31: 0 active2026-04-30: 0 active2026-05-31: 0 active2026-06-30: 0 active2026-07-31: 0 active2026-08-31: 0 active2026-09-01: 0 active2026-09-02: 0 active2026-09-03: 0 active2026-09-04: 0 active2026-09-05: 0 active2026-09-06: 0 active2026-09-07: 0 active2026-09-08: 0 active2026-09-09: 0 active2026-09-10: 0 active2026-09-11: 0 active2026-09-12: 0 active2026-09-13: 0 active2026-09-14: 0 active2026-09-15: 0 active2026-09-16: 0 active2026-09-17: 0 active2026-09-18: 0 active2026-09-19: 0 active2026-09-20: 0 active2026-09-21: 0 active2026-09-22: 0 active2026-09-23: 0 active2026-09-24: 10 active2026-09-25: 10 active2026-09-26: 10 active2026-09-27: 10 active2026-09-28: 10 active2026-09-29: 10 active2026-09-30: 10 active2026-10-01: 10 active2026-10-02: 10 active2026-10-03: 10 active2026-10-04: 10 active2026-10-05: 10 active2026-10-06: 10 active2026-10-07: 10 active2026-10-08: 10 active2026-10-09: 10 active2026-10-10: 10 active2026-10-11: 10 active2026-10-12: 10 active2026-10-13: 10 active2025-06-302026-10-13

# 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
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90 days
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# faq
? How many .book domains are registered?
There are 10 active .book domains as of October 13, 2026, according to DNSniffer’s daily count of zone-file and certificate-transparency records.
? Is .book growing or shrinking?
We do not yet hold a full year of history for .book. The chart above shows everything we have recorded so far.
? Where does the .book 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 .book 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.
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