Websites Powered by IIS
1,243,174 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
Jun 2022
Jul 2024
Aug 2026
Domains observed using IIS in each month's HTTP Archive crawl,
Apr 2018 to Aug 2026 · peak 504,960 in Nov 2022. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.6 s
INP 75 ms
CLS 0
TTFB 700 ms
Median site among 417,993 IIS sites with Chrome UX data, p75 values, Aug 2026.
Top countries
United States
121,069
India
60,068
United Kingdom
43,214
Italy
39,691
Brazil
35,276
Germany
31,791
Canada
31,780
Türkiye
31,323
Sites using IIS by audience country, Chrome UX Report.
Top sites by authority
9+
14% · 53 of 372 sites
8+
17% · 1,275 of 7,677 sites
7+
11% · 5,011 of 45,712 sites
6+
9% · 9,561 of 110,136 sites
5+
6% · 15,981 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 |
|---|---|---|---|---|---|
| 901 | ashrae.org | 8.22/10 | 27,400 | 18,238 | May 2018 |
| 902 | gov.hr | 8.22/10 | 1,600 | 883 | Jun 2018 |
| 903 | afnor.org | 8.22/10 | 180 | 251 | Aug 2018 |
| 904 | unocha.org | 8.22/10 | 34,500 | 14,292 | Aug 2018 |
| 905 | soton.ac.uk | 8.22/10 | - | - | Aug 2018 |
| 906 | ocregister.com | 8.22/10 | 231,800 | 267,342 | Aug 2018 |
| 907 | ohio-state.edu | 8.22/10 | - | - | Aug 2018 |
| 908 | camh.ca | 8.22/10 | 111,300 | 28,720 | Jan 2019 |
| 909 | usccb.org | 8.22/10 | 1,179,800 | 155,764 | Apr 2018 |
| 910 | health.wa.gov.au | 8.22/10 | 18,600 | 18,741 | Apr 2018 |
| 911 | utdallas.edu | 8.22/10 | 151,000 | 22,671 | Aug 2018 |
| 912 | uab.cat | 8.22/10 | 5,700 | 4,817 | Aug 2018 |
| 913 | alaska.edu | 8.22/10 | 50,600 | 9,009 | Aug 2018 |
| 914 | upf.edu | 8.22/10 | 4,700 | 3,555 | Jan 2019 |
| 915 | svenskakyrkan.se | 8.22/10 | 2,200 | 1,386 | Aug 2018 |
| 916 | chiba.lg.jp | 8.22/10 | - | - | Aug 2018 |
| 917 | leidenuniv.nl | 8.22/10 | - | - | Aug 2018 |
| 918 | fhnw.ch | 8.22/10 | 400 | 746 | Aug 2018 |
| 919 | unisg.ch | 8.22/10 | 6,200 | 3,093 | Jun 2018 |
| 920 | usal.es | 8.22/10 | 3,200 | 1,130 | Aug 2018 |
| 921 | ufsc.br | 8.22/10 | 120 | 86 | Aug 2018 |
| 922 | kddi.com | 8.21/10 | 800 | 263 | May 2023 |
| 923 | hse.ie | 8.21/10 | 54,600 | 47,731 | Apr 2018 |
| 924 | nidirect.gov.uk | 8.21/10 | 140,100 | 128,149 | Sep 2021 |
| 925 | usbank.com | 8.21/10 | 3,144,500 | 373,789 | Jun 2018 |
| 926 | aa.com | 8.21/10 | 13,035,500 | 799,338 | Aug 2018 |
| 927 | mineco.gob.es | 8.21/10 | - | 1 | Nov 2020 |
| 928 | massgeneral.org | 8.21/10 | 499,200 | 151,425 | Apr 2018 |
| 929 | nmsu.edu | 8.21/10 | 30,700 | 9,989 | Aug 2018 |
| 930 | ucd.ie | 8.21/10 | 42,700 | 19,975 | Jan 2019 |
| 931 | polito.it | 8.21/10 | 13,800 | 2,655 | Aug 2018 |
| 932 | ttu.edu | 8.21/10 | 118,300 | 21,348 | Apr 2018 |
| 933 | sorbonne-universite.fr | 8.21/10 | 10,200 | 3,852 | May 2021 |
| 934 | uba.ar | 8.21/10 | 670 | 586 | Aug 2018 |
| 935 | uc.pt | 8.21/10 | 3,500 | 1,118 | Aug 2018 |
| 936 | onlyfans.com | 8.20/10 | 66,700 | 5,719 | Aug 2022 |
| 937 | pg.com | 8.20/10 | 8 | 5 | Aug 2018 |
| 938 | schwab.com | 8.20/10 | 3,559,200 | 365,660 | Aug 2018 |
| 939 | mef.gov.it | 8.20/10 | 670 | 768 | Sep 2018 |
| 940 | reading.ac.uk | 8.20/10 | 15,100 | 12,029 | Apr 2018 |
| 941 | city.sapporo.jp | 8.20/10 | 1,800 | 179 | Jan 2019 |
| 942 | be.ch | 8.20/10 | 12 | 42 | Aug 2018 |
| 943 | ens-lyon.fr | 8.20/10 | 2,800 | 1,148 | Apr 2019 |
| 944 | bunshun.jp | 8.20/10 | 61 | 48 | Feb 2020 |
| 945 | ultipro.com | 8.19/10 | - | - | Apr 2018 |
| 946 | tu-dortmund.de | 8.19/10 | 870 | 647 | Jan 2019 |
| 947 | cic.gc.ca | 8.19/10 | 290 | 111 | Apr 2018 |
| 948 | montana.edu | 8.19/10 | 405,100 | 105,688 | Aug 2018 |
| 949 | sdu.dk | 8.19/10 | 6,000 | 5,051 | Apr 2018 |
| 950 | artic.edu | 8.19/10 | 428,800 | 103,071 | Aug 2018 |
| 951 | msb.se | 8.19/10 | 850 | 792 | Jun 2018 |
| 952 | unl.pt | 8.19/10 | 480 | 245 | Aug 2018 |
| 953 | sandiego.gov | 8.19/10 | 922,400 | 195,366 | Aug 2018 |
| 954 | kobe.lg.jp | 8.19/10 | - | - | Nov 2023 |
| 955 | uni-ulm.de | 8.19/10 | 2,700 | 1,858 | May 2023 |
| 956 | uam.es | 8.19/10 | 910 | 1,945 | Apr 2019 |
| 957 | serpro.gov.br | 8.18/10 | 380 | 767 | Aug 2018 |
| 958 | marca.com | 8.18/10 | 973,900 | 573,878 | Nov 2021 |
| 959 | unige.it | 8.18/10 | 4,100 | 1,729 | Jan 2019 |
| 960 | sun-sentinel.com | 8.18/10 | 97,900 | 108,084 | Aug 2018 |
| 961 | ncua.gov | 8.18/10 | 86,400 | 32,882 | Jun 2018 |
| 962 | uni-konstanz.de | 8.18/10 | 2,100 | 1,030 | Aug 2018 |
| 963 | transportstyrelsen.se | 8.18/10 | 1,300 | 1,035 | Jun 2018 |
| 964 | miamidade.gov | 8.18/10 | 912,900 | 265,598 | Apr 2018 |
| 965 | jtb.co.jp | 8.18/10 | 640 | 1,303 | Apr 2018 |
| 966 | hslu.ch | 8.18/10 | 290 | 438 | Apr 2018 |
| 967 | cnki.net | 8.17/10 | 1 | 12 | Apr 2018 |
| 968 | msf.org | 8.17/10 | 24,900 | 11,580 | Aug 2018 |
| 969 | nola.com | 8.17/10 | 596,400 | 310,919 | Aug 2018 |
| 970 | mtu.edu | 8.17/10 | 369,900 | 68,922 | Aug 2018 |
| 971 | uni-halle.de | 8.17/10 | 650 | 112 | Mar 2021 |
| 972 | uni-kl.de | 8.17/10 | 5 | 16 | Aug 2018 |
| 973 | navarra.es | 8.17/10 | 2,600 | 4,406 | Apr 2018 |
| 974 | hitachi.co.jp | 8.17/10 | 90 | 289 | Aug 2018 |
| 975 | pref.shizuoka.jp | 8.17/10 | 240 | 103 | Jan 2019 |
| 976 | lublin.pl | 8.17/10 | 4 | 3 | Jan 2019 |
| 977 | titech.ac.jp | 8.17/10 | 2,400 | 817 | Sep 2023 |
| 978 | state.nm.us | 8.16/10 | 250 | 117 | Jun 2018 |
| 979 | bfi.org.uk | 8.16/10 | 250,200 | 57,643 | Aug 2018 |
| 980 | mdanderson.org | 8.16/10 | 1,569,400 | 320,819 | Aug 2018 |
| 981 | univ-lorraine.fr | 8.16/10 | 510 | 500 | Mar 2021 |
| 982 | daihatsu.co.jp | 8.15/10 | 41 | 78 | Aug 2018 |
| 983 | rackspace.com | 8.15/10 | 35,900 | 5,344 | Aug 2018 |
| 984 | sbn.it | 8.15/10 | - | - | Feb 2019 |
| 985 | eaton.com | 8.15/10 | 433,500 | 130,964 | Aug 2018 |
| 986 | state.ma.us | 8.15/10 | - | - | Aug 2018 |
| 987 | dynamics.com | 8.15/10 | - | - | Apr 2018 |
| 988 | education.gov.uk | 8.15/10 | - | - | Aug 2018 |
| 989 | government.bg | 8.15/10 | - | 3 | Aug 2018 |
| 990 | christies.com | 8.15/10 | 183,100 | 82,225 | Jun 2018 |
| 991 | restaurant.org | 8.15/10 | 312,600 | 7,014 | May 2018 |
| 992 | qub.ac.uk | 8.15/10 | 21,300 | 13,550 | Aug 2018 |
| 993 | albany.edu | 8.15/10 | 166,200 | 60,210 | Aug 2018 |
| 994 | health.qld.gov.au | 8.15/10 | 144,600 | 54,940 | Jan 2019 |
| 995 | pref.kyoto.jp | 8.15/10 | 1,700 | 314 | Jan 2019 |
| 996 | nkp.cz | 8.14/10 | 250 | 72 | Nov 2023 |
| 997 | travel.gc.ca | 8.14/10 | 630,300 | 140,212 | Apr 2018 |
| 998 | acc.org | 8.14/10 | 100,900 | 50,435 | Apr 2018 |
| 999 | ntnu.no | 8.14/10 | 4,600 | 1,879 | Aug 2018 |
| 1000 | kidney.org | 8.14/10 | 867,200 | 184,224 | Apr 2020 |
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) →