Most Popular .io Websites

8,123 .io domains in the NetAPI Top 1M, ranked by popularity

As of September 4, 2026 (UTC)

This page lists the most popular .io websites: every .io domain that made it into the NetAPI Top 1M, the free daily ranking of the one million most popular websites worldwide. The top 100 are shown below; the complete list of all 8,123 .io domains is available as a free CSV.

.io ranks #15 of 79 TLDs by presence in the Top 1M, with 8,123 domains (0.81% of the list).

8,123

sites in the Top 1M

0.81%

of the Top 1M

#115

best global rank (itch.io)

#15

among 79 TLDs

100

shown on this page

8,123

domains in the free CSV

Top 100 .io websites

# = position within .io; NetAPI rank = position in the full Top 1M (1 = most popular website on the Internet).

#	Domain	NetAPI rank
1	itch.io	115
2	ssstik.io	431
3	cardgames.io	484
4	indown.io	548
5	github.io	853
6	sentry.io	926
7	wpguardian.io	1,002
8	ioref.io	1,036
9	readthedocs.io	1,064
10	adobe.io	1,092
11	pushy.io	1,190
12	pendo.io	1,198
13	trustindex.io	1,443
14	1rx.io	1,536
15	bidr.io	1,673
16	webflow.io	1,700
17	netcraze.io	1,703
18	redis.io	1,722
19	h264.io	1,748
20	branch.io	1,781
21	astrumu.io	1,828
22	complianz.io	1,917
23	gitbook.io	2,035
24	gohugo.io	2,048
25	yellowblue.io	2,057
26	codepen.io	2,082
27	presage.io	2,180
28	pantheonsite.io	2,228
29	intercom.io	2,310
30	privacymanager.io	2,524
31	pxf.io	2,596
32	kubernetes.io	2,598
33	mediago.io	2,629
34	ably.io	2,631
35	segment.io	2,633
36	4dex.io	2,635
37	meduza.io	2,724
38	termly.io	2,839
39	elevenlabs.io	2,853
40	greenhouse.io	2,891
41	gitlab.io	2,923
42	sjv.io	2,927
43	gitea.io	3,010
44	jumpjump.io	3,028
45	classlink.io	3,128
46	grammarly.io	3,131
47	opensea.io	3,214
48	envoyer.io	3,244
49	pangle.io	3,254
50	osf.io	3,272
51	veed.io	3,317
52	advolve.io	3,340
53	onetrust.io	3,383
54	akstat.io	3,436
55	sourceforge.io	3,453
56	geo.io	3,748
57	statuspage.io	3,901
58	liftoff.io	4,042
59	liftoff-creatives.io	4,045
60	etherscan.io	4,101
61	gupy.io	4,106
62	keybase.io	4,273
63	ipinfo.io	4,337
64	hotjar.io	4,521
65	spring.io	4,996
66	bidmachine.io	5,041
67	devowl.io	5,147
68	modelcontextprotocol.io	5,158
69	split.io	5,170
70	sanity.io	5,179
71	skribbl.io	5,343
72	hackmd.io	5,373
73	nexx360.io	5,669
74	mapgenie.io	5,687
75	clarium.io	5,766
76	omegleweb.io	5,810
77	zeta-ai.io	6,003
78	trezor.io	6,107
79	qt.io	6,317
80	filelist.io	6,506
81	aifaceswap.io	6,590
82	streamrecorder.io	6,791
83	connectad.io	6,944
84	solitar.io	6,949
85	mangak.io	7,295
86	collectivegames.io	7,378
87	pindown.io	7,454
88	trackcourier.io	7,549
89	timewall.io	7,596
90	animefire.io	7,653
91	n8n.io	7,721
92	bizmation.io	7,833
93	easysyncr.io	7,934
94	hitmaal.io	8,064
95	jiuse.io	8,108
96	sm3ha.io	8,474
97	tikvid.io	8,531
98	home-assistant.io	8,794
99	metamask.io	8,808
100	synthesia.io	8,832

Download the full list

Free CSV with all 8,123 .io domains from the Top 1M, most popular first (two columns: Rank, Domain). Regenerated daily together with the Top 1M.

Download CSV (all 8,123 .io domains)

Published under CC BY 4.0: reuse freely, including commercially, with attribution to NetAPI and a link to https://netapi.com/.

Need every .io domain?

The Top 1M covers only the most popular sites. All 1,373,615 registered .io domains, with DNS, server IP and WHOIS data, are available as daily updated domain lists and datasets.

Domain lists and datasets for .io →

Methodology

Rank = position of the domain in the NetAPI Top 1M, which combines several public SEO / link-graph and traffic signals with reciprocal rank fusion so that no single source dominates. Domains are registrable domains (eTLD+1); a .io domain is any domain whose top-level domain is .io, regardless of where the site is hosted or who runs it.

The list is rebuilt every day; counts and ranks on this page refer to the current snapshot. The page exists for TLDs with at least 1,000 domains in the Top 1M.

See also the full NetAPI Top 1M list and the report Anatomy of the Top 1M.

Other countries and TLDs

.br 18,369 .it 17,181 .in 13,998 .fr 13,678 .cn 12,325 .pl 10,669 .co 7,739 .au 7,540 .ca 7,341 .xyz 6,412 .es 6,067 .cz 5,992

All countries and TLDs →