Websites Powered by IIS
1,238,639 websites tracked using IIS (Web servers) · www.iis.net
IIS is a web server that delivers the site's pages. Its official site is iis.net. PoweredBy tracks the websites that use IIS across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the web servers ecosystem.
Usage trend
200K
400K
600K
Apr 2018
May 2020
May 2022
Jun 2024
Jun 2026
Domains observed using IIS in each month's HTTP Archive crawl,
Apr 2018 to Jun 2026 · peak 504,960 in Nov 2022. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.7 s
INP 75 ms
CLS 0
TTFB 700 ms
Median site among 424,305 IIS sites with Chrome UX data, p75 values, Jun 2026.
Top countries
United States
136,825
India
68,343
United Kingdom
49,161
Italy
46,831
Brazil
38,951
Türkiye
36,724
Canada
36,284
Germany
36,200
Sites using IIS by audience country, Chrome UX Report.
Top sites by authority
9+
16% · 61 of 372 sites
8+
17% · 1,315 of 7,677 sites
7+
11% · 5,213 of 45,712 sites
6+
9% · 9,906 of 110,136 sites
5+
7% · 16,556 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running IIS in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using IIS
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 801 | stonybrook.edu | 8.27/10 | 351,000 | 92,449 | Aug 2018 |
| 802 | uni-bielefeld.de | 8.27/10 | 4,100 | 1,037 | Jan 2019 |
| 803 | upc.edu | 8.27/10 | 1,400 | 1,502 | Apr 2019 |
| 804 | nrcan.gc.ca | 8.27/10 | - | 1 | Aug 2018 |
| 805 | pdx.edu | 8.27/10 | 152,000 | 32,376 | Aug 2018 |
| 806 | ou.edu | 8.27/10 | 382,900 | 71,501 | Aug 2018 |
| 807 | cea.fr | 8.27/10 | 2,000 | 1,809 | Apr 2018 |
| 808 | ritsumei.ac.jp | 8.27/10 | 960 | 1,069 | Aug 2018 |
| 809 | phila.gov | 8.27/10 | 643,900 | 199,195 | Jun 2018 |
| 810 | fiocruz.br | 8.27/10 | 500 | 722 | Aug 2018 |
| 811 | parool.nl | 8.27/10 | 1,400 | 4,068 | Aug 2019 |
| 812 | waseda.jp | 8.27/10 | 13,200 | 3,964 | Aug 2018 |
| 813 | ua.es | 8.27/10 | 130 | 216 | Aug 2018 |
| 814 | slu.se | 8.27/10 | 2,400 | 1,343 | May 2018 |
| 815 | jll.com | 8.26/10 | 64,700 | 27,072 | Jun 2018 |
| 816 | cas.cn | 8.26/10 | 450 | 64 | May 2020 |
| 817 | digital.nhs.uk | 8.26/10 | 10,800 | 12,470 | Jan 2019 |
| 818 | kb.nl | 8.26/10 | 740 | 266 | Apr 2018 |
| 819 | bt.com | 8.26/10 | 153,100 | 19,613 | Aug 2018 |
| 820 | overdrive.com | 8.26/10 | 130,100 | 98,935 | Aug 2018 |
| 821 | orlandosentinel.com | 8.26/10 | 124,800 | 145,354 | Aug 2018 |
| 822 | fau.de | 8.26/10 | 1,600 | 2,394 | Aug 2018 |
| 823 | charite.de | 8.26/10 | 600 | 676 | May 2020 |
| 824 | uni-wuerzburg.de | 8.26/10 | 1,900 | 1,383 | Aug 2022 |
| 825 | barcelona.cat | 8.26/10 | 18,300 | 7,599 | Jun 2024 |
| 826 | uark.edu | 8.26/10 | 90,000 | 9,143 | Aug 2018 |
| 827 | unlv.edu | 8.26/10 | 319,800 | 86,297 | Aug 2018 |
| 828 | chop.edu | 8.26/10 | 1,318,800 | 212,894 | Aug 2018 |
| 829 | hokkaido.lg.jp | 8.26/10 | - | - | Aug 2018 |
| 830 | art.pl | 8.26/10 | - | - | Jul 2020 |
| 831 | unifr.ch | 8.26/10 | 2,900 | 1,156 | Aug 2018 |
| 832 | hostgator.com | 8.25/10 | 57,800 | 17,594 | May 2020 |
| 833 | nielseniq.com | 8.25/10 | 13,900 | 12,225 | Sep 2021 |
| 834 | vse.cz | 8.25/10 | 320 | 216 | Aug 2018 |
| 835 | utep.edu | 8.25/10 | 188,700 | 63,230 | Aug 2018 |
| 836 | granicus.com | 8.25/10 | 11,400 | 3,839 | Jun 2023 |
| 837 | state.md.us | 8.25/10 | - | - | Aug 2018 |
| 838 | kompas.com | 8.25/10 | 3,500 | 11,149 | Feb 2020 |
| 839 | mercedes-benz.com | 8.25/10 | 186,400 | 15,625 | Aug 2018 |
| 840 | chosun.com | 8.25/10 | 268,400 | 143,766 | Apr 2018 |
| 841 | nahb.org | 8.25/10 | 97,900 | 32,327 | Apr 2018 |
| 842 | rhs.org.uk | 8.25/10 | 439,000 | 246,520 | Jun 2018 |
| 843 | theiet.org | 8.25/10 | 19,600 | 4,631 | Aug 2018 |
| 844 | oregonlegislature.gov | 8.25/10 | 61,400 | 24,086 | Jun 2018 |
| 845 | novascotia.ca | 8.25/10 | 22,700 | 24,976 | Aug 2018 |
| 846 | dfg.de | 8.25/10 | 1,700 | 1,356 | Apr 2019 |
| 847 | al.com | 8.25/10 | 1,050,600 | 537,746 | Aug 2018 |
| 848 | koreatimes.co.kr | 8.25/10 | 141,500 | 70,650 | Apr 2018 |
| 849 | iihs.org | 8.25/10 | 313,700 | 106,749 | Apr 2018 |
| 850 | uni-kiel.de | 8.25/10 | 1,300 | 766 | Apr 2019 |
| 851 | floridahealth.gov | 8.25/10 | 345,400 | 156,641 | Apr 2018 |
| 852 | ulisboa.pt | 8.25/10 | 6,100 | 1,009 | Aug 2018 |
| 853 | nwf.org | 8.25/10 | 917,800 | 72,616 | Jan 2019 |
| 854 | usask.ca | 8.25/10 | 13,500 | 3,000 | Aug 2018 |
| 855 | project-syndicate.org | 8.25/10 | 33,200 | 22,217 | Apr 2018 |
| 856 | lansstyrelsen.se | 8.25/10 | 1,800 | 885 | Apr 2018 |
| 857 | furunavi.jp | 8.25/10 | 16 | 46 | Apr 2018 |
| 858 | ufrgs.br | 8.25/10 | 1,600 | 3,108 | Aug 2018 |
| 859 | riken.jp | 8.25/10 | 3,800 | 2,348 | Apr 2018 |
| 860 | ufrj.br | 8.25/10 | 320 | 114 | Aug 2018 |
| 861 | nagoya-u.ac.jp | 8.25/10 | 11 | 36 | Aug 2018 |
| 862 | web.com | 8.24/10 | 4,900 | 906 | Aug 2018 |
| 863 | mattel.com | 8.24/10 | - | 1 | Aug 2018 |
| 864 | bayer.com | 8.24/10 | 81,900 | 35,978 | Jun 2018 |
| 865 | ifrc.org | 8.24/10 | 38,500 | 12,266 | Apr 2018 |
| 866 | pku.edu.cn | 8.24/10 | 37 | 21 | Aug 2018 |
| 867 | costco.com | 8.24/10 | 24,792,400 | 3,063,436 | Aug 2018 |
| 868 | cadenaser.com | 8.24/10 | 11,700 | 37,319 | Aug 2022 |
| 869 | beck.de | 8.24/10 | 17 | 2 | Jun 2018 |
| 870 | ntu.edu.tw | 8.24/10 | 1,500 | 817 | Aug 2018 |
| 871 | umaryland.edu | 8.24/10 | 115,200 | 30,285 | Apr 2018 |
| 872 | heureka.cz | 8.24/10 | 200 | 1,844 | Jan 2019 |
| 873 | umbc.edu | 8.24/10 | 70,000 | 13,948 | Aug 2018 |
| 874 | universal-music.co.jp | 8.24/10 | 2,000 | 3,115 | Jul 2021 |
| 875 | msstate.edu | 8.24/10 | 95,500 | 19,873 | Aug 2018 |
| 876 | du.edu | 8.24/10 | 99,500 | 41,585 | Aug 2018 |
| 877 | uibk.ac.at | 8.24/10 | 7,200 | 4,770 | Feb 2020 |
| 878 | unr.edu | 8.24/10 | 324,200 | 99,987 | Jun 2018 |
| 879 | labiennale.org | 8.24/10 | 27,900 | 9,998 | Aug 2018 |
| 880 | iss.it | 8.24/10 | 430 | 270 | Apr 2018 |
| 881 | tga.gov.au | 8.24/10 | 83,300 | 60,806 | Aug 2018 |
| 882 | kingcounty.gov | 8.24/10 | 771,400 | 314,871 | Jun 2018 |
| 883 | boell.de | 8.24/10 | 3,800 | 3,251 | Apr 2019 |
| 884 | curtin.edu.au | 8.24/10 | 8,500 | 7,713 | Aug 2018 |
| 885 | polisen.se | 8.24/10 | 1,500 | 1,581 | Aug 2018 |
| 886 | gda.pl | 8.24/10 | - | - | Jan 2019 |
| 887 | hiroshima.lg.jp | 8.24/10 | - | - | Aug 2018 |
| 888 | ntsb.gov | 8.24/10 | 197,200 | 26,843 | Apr 2018 |
| 889 | kyoto.lg.jp | 8.24/10 | - | - | Aug 2018 |
| 890 | uned.es | 8.24/10 | 2,000 | 3,725 | Aug 2018 |
| 891 | unesp.br | 8.24/10 | - | 2 | Aug 2018 |
| 892 | uj.edu.pl | 8.24/10 | 360 | 132 | Aug 2018 |
| 893 | indiamart.com | 8.23/10 | 51,500 | 240,930 | Mar 2020 |
| 894 | smu.edu.sg | 8.23/10 | 3,700 | 1,696 | Aug 2018 |
| 895 | turner.com | 8.23/10 | - | - | Aug 2018 |
| 896 | rospotrebnadzor.ru | 8.23/10 | 4 | 5 | Aug 2018 |
| 897 | caesars.com | 8.23/10 | 2,160,000 | 216,876 | Apr 2018 |
| 898 | fujifilm.com | 8.23/10 | 35,600 | 13,498 | Mar 2021 |
| 899 | unitedway.org | 8.23/10 | 70,800 | 33,154 | Aug 2018 |
| 900 | shell.com | 8.23/10 | 1,471,200 | 26,199 | Aug 2018 |
Open Page Rank is the domain's authority score (0 to 10, from the open web link graph); the list is ordered by it and covers sites seen in recent crawls. Visits and keywords are estimated US organic search figures.
Download top 10,000 as CSV (zip) →