| 2.1% |
| 11% |
| Rank | #4 | #1 |
|---|
| Median DR | 35 | 25 |
|---|
| Average DR | 36 | 29 |
|---|
| Median keywords | 940 | 850 |
|---|
| Median referring domains | 444 | 315 |
|---|
| Median domain age | 21 yrs | 14 yrs |
|---|
| Average domain age | 20 yrs | 15 yrs |
|---|
| Average monthly traffic | 66,914 | 71,671 |
|---|
| Combined monthly traffic | 982,237,478 | 9,557,266,912 |
|---|
Monthly snapshots of each segment, 2026-06 to 2026-07. Website counts move when our catalog grows; the share of tracked sites is normalized, so it only moves when real prevalence changes.
Websites
Share of tracked sites
Combined monthly traffic
14,679 websites · rank #4
Top industries
Top markets
133,349 websites · rank #1
Top industries
Top markets
Nginx is used by more websites in our catalog: 14,679 use IIS and 133,349 use Nginx.
IIS sites have the higher median Ahrefs Domain Rating (IIS: 35, Nginx: 25).
Between 2026-06 and 2026-07, IIS went from 1.8% to 1.7% of all tracked sites, while Nginx went from 16% to 15%. IIS is gaining ground faster in our index.
0 websites in our catalog use both IIS and Nginx.
Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.
Citation
Site Stats Database. "IIS vs Nginx." Site Stats Database, July 1, 2026. https://sitestatsdb.com/technologies/web-servers/compare/iis-vs-nginx
Site Stats Database tracks 14,679 websites using IIS and 133,349 using Nginx, each enriched with full monthly traffic history, authority, keywords, referring domains, and the complete detected tech stack. We detect every web server by crawling each site's HTML, response headers, and DNS; traffic and SEO metrics come from DataForSEO and Ahrefs. Everything refreshes at least monthly.
See plans & pricing| English |
| 83 |
| 894,812 |
| 37,978 |
| 24 yrs |
| 21,600,171 |
| IIS |
| uhaul.com | English | 82 | 286,557 | 21,818 | 31 yrs | 20,054,396 | IIS |
| tjx.com | English | 77 | 196,583 | 13,711 | 29 yrs | 12,790,591 | IIS |
| aapc.com | English | 79 | 282,781 | 11,910 | 29 yrs | 11,747,563 | IIS |
| oregon.gov | English | 90 | 572,609 | 80,421 | 24 yrs | 10,432,431 | IIS |
| subway.com | English | 82 | 117,638 | 34,087 | 30 yrs | 9,959,880 | IIS |
| nm.org | English | 80 | 464,755 | 21,588 | 37 yrs | 9,563,438 | IIS |
| nclottery.com | English | 78 | 50,112 | 6,680 | 27 yrs | 9,175,424 | IIS |
| eia.gov | English | 90 | 176,365 | 90,162 | 16 yrs | 9,082,709 | IIS |
| English |
| 97 |
| 58,180,430 |
| 3,979,372 |
| 29 yrs |
| 383,786,862 |
| Nginx |
| harvard.edu | English | 93 | 3,845,102 | 714,396 | 41 yrs | 104,117,233 | Nginx |
| biblegateway.com | English | 91 | 965,722 | 185,253 | 28 yrs | 82,990,263 | Nginx |
| nasa.gov | English | 92 | 977,872 | 485,459 | 28 yrs | 82,000,277 | Nginx |
| steampowered.com | English | 92 | 1,309,334 | 252,706 | 25 yrs | 80,550,067 | Nginx |
| go.com | English | 92 | 913,868 | 604,602 | 28 yrs | 72,794,971 | Nginx |
| almanac.com | English | 84 | 932,777 | 73,599 | 31 yrs | 63,656,636 | Nginx |
| cuemath.com | English | 73 | 683,540 | 10,181 | 14 yrs | 61,215,857 | Nginx |
| recipetineats.com | English | 79 | 844,549 | 59,630 | 12 yrs | 55,020,972 | Nginx |