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~/dnsniffer/tlds/io·rank #41

▸ How many .io domains are registered?

1,114,624

active .io domains as of .

# rank #41 of all TLDs ▲ 1 in 30d# all records held: 1,295,270# snapshots: 60
search .io domains download the .io dataset
~/tlds/io/history·active domains
1,114,624
active .io domains on 2026-10-15 · ▲ +1,036,247 (+1,322.13%) since 2025-06-30
0309.7K619.5K929.2K1.24M2025-06-30: 78,377 active2025-07-31: 729,341 active2025-08-31: 734,287 active2025-09-30: 734,736 active2025-10-31: 734,736 active2025-11-30: 734,736 active2025-12-31: 836,978 active2026-01-31: 888,398 active2026-02-28: 888,399 active2026-03-31: 888,399 active2026-04-30: 986,300 active2026-05-31: 1,031,024 active2026-06-30: 1,054,300 active2026-07-31: 1,074,382 active2026-08-31: 1,074,322 active2026-09-01: 1,069,464 active2026-09-02: 1,064,219 active2026-09-03: 1,041,792 active2026-09-04: 1,033,076 active2026-09-05: 1,031,815 active2026-09-06: 1,031,785 active2026-09-07: 1,027,795 active2026-09-08: 1,028,507 active2026-09-09: 1,029,279 active2026-09-10: 1,030,019 active2026-09-11: 1,030,734 active2026-09-12: 1,031,507 active2026-09-13: 1,032,065 active2026-09-14: 1,032,594 active2026-09-15: 1,033,312 active2026-09-16: 1,034,036 active2026-09-17: 1,034,799 active2026-09-18: 1,035,643 active2026-09-19: 1,036,368 active2026-09-20: 1,036,956 active2026-09-21: 1,037,581 active2026-09-22: 1,038,384 active2026-09-23: 1,039,142 active2026-09-24: 1,098,608 active2026-09-25: 1,098,908 active2026-09-26: 1,099,625 active2026-09-27: 1,100,189 active2026-09-28: 1,100,717 active2026-09-29: 1,101,435 active2026-09-30: 1,102,224 active2026-10-01: 1,102,953 active2026-10-02: 1,103,785 active2026-10-03: 1,104,660 active2026-10-04: 1,105,399 active2026-10-05: 1,106,189 active2026-10-06: 1,107,077 active2026-10-07: 1,107,944 active2026-10-08: 1,108,892 active2026-10-09: 1,109,804 active2026-10-10: 1,110,644 active2026-10-11: 1,111,324 active2026-10-12: 1,112,030 active2026-10-13: 1,112,893 active2026-10-14: 1,113,679 active2026-10-15: 1,114,624 active2025-06-302026-10-15

# 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
▲ +7.87%
+81,312 domains
90 days
▲ +5.72%
+60,324 domains
1 year
▲ +51.70%
+379,888 domains
# faq
? How many .io domains are registered?
There are 1,114,624 active .io domains as of October 15, 2026, according to DNSniffer’s daily count of zone-file and certificate-transparency records.
? Is .io growing or shrinking?
.io has grown by 51.70% over the last year (+379,888 domains).
? Where does the .io 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 .io 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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