Websites Powered by IIS
1,244,330 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
Jul 2022
Aug 2024
Sep 2026
Domains observed using IIS in each month's HTTP Archive crawl,
Apr 2018 to Sep 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 414,605 IIS sites with Chrome UX data, p75 values, Sep 2026.
Top countries
United States
117,730
India
58,829
United Kingdom
42,820
Italy
40,808
Brazil
34,656
Canada
31,601
Türkiye
31,246
Germany
31,200
Sites using IIS by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Government | 5.88% | 473 |
| Sports and fitness | 3.21% | 534 |
| Education | 3.01% | 1,501 |
| Arts and entertainment | 2.74% | 1,131 |
| Finance and insurance | 2.50% | 414 |
| Travel and hospitality | 1.92% | 1,428 |
| Healthcare | 1.69% | 1,801 |
| Non-profit and religious | 1.34% | 105 |
| Automotive | 1.17% | 809 |
| News and media | 1.16% | 490 |
| Real estate | 1.12% | 796 |
| Professional services | 1.01% | 415 |
Share of each industry's websites with a detected stack that use IIS; industries come from what sites declare in their own structured data.
Top sites by authority
9+
14% · 52 of 372 sites
8+
16% · 1,251 of 7,677 sites
7+
11% · 4,898 of 45,712 sites
6+
8% · 9,357 of 110,136 sites
5+
6% · 15,639 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 |
|---|---|---|---|---|---|
| 3401 | libelle.nl | 7.31/10 | 1,200 | 1,238 | Jan 2025 |
| 3402 | pk.edu.pl | 7.31/10 | 66 | 18 | Feb 2024 |
| 3403 | sun-tv.co.jp | 7.31/10 | 11 | 11 | Aug 2022 |
| 3404 | shimane-u.ac.jp | 7.31/10 | 6 | 3 | Jan 2019 |
| 3405 | city.takatsuki.osaka.jp | 7.31/10 | - | 6 | Feb 2026 |
| 3406 | npu.cz | 7.31/10 | 120 | 124 | Apr 2020 |
| 3407 | tennis.de | 7.30/10 | 270 | 756 | Sep 2022 |
| 3408 | caspio.com | 7.30/10 | 1,400 | 748 | Mar 2021 |
| 3409 | landcareresearch.co.nz | 7.30/10 | 12,700 | 5,726 | Aug 2018 |
| 3410 | fronius.com | 7.30/10 | 6,600 | 3,570 | May 2017 |
| 3411 | regione.basilicata.it | 7.30/10 | 460 | 328 | May 2023 |
| 3412 | chrysler.com | 7.30/10 | 397,000 | 32,980 | Aug 2018 |
| 3413 | sepa.org.uk | 7.30/10 | 370 | 655 | Aug 2018 |
| 3414 | aapc.com | 7.30/10 | 1,589,100 | 204,543 | May 2017 |
| 3415 | masters.com | 7.30/10 | 366,300 | 8,264 | Aug 2018 |
| 3416 | statsforvalteren.no | 7.30/10 | 60 | 156 | Mar 2021 |
| 3417 | state.vt.us | 7.30/10 | 580 | 184 | Aug 2018 |
| 3418 | messe-berlin.de | 7.30/10 | 1,000 | 127 | Jun 2022 |
| 3419 | drafthouse.com | 7.30/10 | 951,600 | 85,644 | Sep 2025 |
| 3420 | dfs.de | 7.30/10 | 230 | 112 | Aug 2022 |
| 3421 | sicredi.com.br | 7.30/10 | 1,100 | 1,363 | Aug 2018 |
| 3422 | buffalowildwings.com | 7.30/10 | 1,011,600 | 117,634 | Jan 2016 |
| 3423 | rsc.org.uk | 7.30/10 | 169,800 | 33,512 | Jan 2016 |
| 3424 | eugene-or.gov | 7.30/10 | 151,600 | 33,254 | Jan 2016 |
| 3425 | seattleartmuseum.org | 7.30/10 | 91,800 | 17,975 | Jan 2016 |
| 3426 | toto.co.jp | 7.30/10 | - | - | Aug 2022 |
| 3427 | ase.ro | 7.30/10 | 200 | 98 | Jan 2016 |
| 3428 | kemenperin.go.id | 7.30/10 | 12 | 4 | Sep 2020 |
| 3429 | prorail.nl | 7.30/10 | 150 | 145 | Oct 2020 |
| 3430 | clyp.it | 7.30/10 | 350 | 186 | Jan 2019 |
| 3431 | svk.se | 7.30/10 | 2,200 | 431 | Jan 2017 |
| 3432 | shimotsuke.co.jp | 7.30/10 | 25 | 46 | Jan 2016 |
| 3433 | vilniustech.lt | 7.30/10 | 370 | 345 | Nov 2022 |
| 3434 | sysinternals.com | 7.29/10 | - | - | May 2017 |
| 3435 | hubinternational.com | 7.29/10 | 78,500 | 12,823 | Jan 2016 |
| 3436 | tedk12.com | 7.29/10 | 1 | 1 | Jan 2016 |
| 3437 | boca.gov.tw | 7.29/10 | 9,000 | 7,315 | Jun 2018 |
| 3438 | wjgnet.com | 7.29/10 | 25,200 | 36,973 | Jan 2016 |
| 3439 | treasury.gov.za | 7.29/10 | 1,400 | 2,493 | Jan 2016 |
| 3440 | ouhsc.edu | 7.29/10 | 36,100 | 13,877 | Jan 2016 |
| 3441 | visegradfund.org | 7.29/10 | 180 | 126 | Aug 2018 |
| 3442 | buffalostate.edu | 7.29/10 | - | - | Aug 2018 |
| 3443 | museenkoeln.de | 7.29/10 | 220 | 171 | Aug 2018 |
| 3444 | mah.se | 7.29/10 | - | - | Jan 2016 |
| 3445 | easybook.com | 7.28/10 | 870 | 2,324 | Oct 2017 |
| 3446 | agd.org | 7.28/10 | 3,300 | 4,244 | Jan 2016 |
| 3447 | rudn.ru | 7.28/10 | 43 | 26 | Aug 2018 |
| 3448 | cherokee.org | 7.28/10 | 73,000 | 26,685 | Jan 2016 |
| 3449 | petzl.com | 7.28/10 | 30,300 | 5,397 | Dec 2023 |
| 3450 | vestas.com | 7.28/10 | 9,500 | 4,578 | Aug 2016 |
| 3451 | kcg.gov.tw | 7.28/10 | 180 | 75 | Jan 2016 |
| 3452 | hs-esslingen.de | 7.28/10 | 24 | 120 | Feb 2021 |
| 3453 | umiamihealth.org | 7.28/10 | 123,200 | 37,308 | Jan 2019 |
| 3454 | unca.edu | 7.28/10 | 3,600 | 1,483 | Jan 2019 |
| 3455 | cmjornal.pt | 7.28/10 | 2,100 | 4,277 | Sep 2016 |
| 3456 | ucam.edu | 7.28/10 | 690 | 2,445 | Mar 2021 |
| 3457 | outdoornebraska.gov | 7.28/10 | 160,300 | 52,213 | Aug 2018 |
| 3458 | debalie.nl | 7.28/10 | 330 | 206 | Aug 2018 |
| 3459 | pathe.nl | 7.28/10 | 3,000 | 1,932 | Sep 2021 |
| 3460 | accessbankplc.com | 7.27/10 | 4,300 | 4,321 | Aug 2016 |
| 3461 | 7-11.com.tw | 7.27/10 | 630 | 547 | Jan 2016 |
| 3462 | oscr.org.uk | 7.27/10 | 310 | 419 | Aug 2018 |
| 3463 | skillsoft.com | 7.27/10 | 28,500 | 17,609 | Oct 2021 |
| 3464 | castrol.com | 7.27/10 | 95,700 | 20,503 | Aug 2018 |
| 3465 | nevo.co.il | 7.27/10 | 2 | 41 | Jan 2016 |
| 3466 | magna.com | 7.27/10 | 24,600 | 14,526 | Jan 2016 |
| 3467 | smcgov.org | 7.27/10 | 228,100 | 32,322 | Aug 2018 |
| 3468 | apaservices.org | 7.27/10 | 41,100 | 11,401 | Feb 2019 |
| 3469 | kyivstar.ua | 7.27/10 | 110 | 104 | Apr 2019 |
| 3470 | stellarinfo.com | 7.27/10 | 36,000 | 36,040 | Mar 2024 |
| 3471 | fh-ooe.at | 7.27/10 | 310 | 298 | Aug 2018 |
| 3472 | rollins.edu | 7.27/10 | 34,000 | 8,316 | Aug 2018 |
| 3473 | ui.se | 7.27/10 | 1,300 | 1,071 | May 2017 |
| 3474 | tw1.ru | 7.26/10 | - | - | Jul 2025 |
| 3475 | ase.com | 7.26/10 | 74,700 | 4,649 | May 2017 |
| 3476 | ac.ru | 7.26/10 | - | - | Aug 2018 |
| 3477 | environdec.com | 7.26/10 | 8,200 | 1,702 | Jan 2019 |
| 3478 | pharmacyregulation.org | 7.26/10 | 1,400 | 1,573 | Feb 2020 |
| 3479 | mobot.org | 7.26/10 | 26,500 | 5,772 | May 2017 |
| 3480 | doh.gov.ph | 7.26/10 | 630 | 138 | Apr 2020 |
| 3481 | ascb.org | 7.26/10 | 9,300 | 2,484 | Nov 2021 |
| 3482 | tukes.fi | 7.26/10 | 190 | 292 | Jun 2016 |
| 3483 | uhi.ac.uk | 7.26/10 | 1,800 | 1,173 | Aug 2018 |
| 3484 | winthrop.edu | 7.26/10 | 52,400 | 11,145 | Jan 2016 |
| 3485 | soundtransit.org | 7.26/10 | 355,800 | 68,392 | Aug 2018 |
| 3486 | lsbu.ac.uk | 7.26/10 | 1,400 | 2,040 | Aug 2018 |
| 3487 | halifax.ca | 7.26/10 | 18,600 | 10,414 | Jan 2016 |
| 3488 | bam.org | 7.26/10 | 110,400 | 16,788 | Aug 2018 |
| 3489 | city.nagaoka.niigata.jp | 7.26/10 | 74 | 23 | Jan 2024 |
| 3490 | engage.it | 7.25/10 | 12 | 231 | Aug 2020 |
| 3491 | wtm.com | 7.25/10 | 8,300 | 1,407 | Jun 2018 |
| 3492 | finanstilsynet.dk | 7.25/10 | 10 | 63 | Jan 2019 |
| 3493 | landrover.com | 7.25/10 | 52,800 | 6,066 | Jan 2019 |
| 3494 | mialojamiento.es | 7.25/10 | - | - | Dec 2021 |
| 3495 | imbc.com | 7.25/10 | 350 | 143 | Jan 2016 |
| 3496 | cityofmadison.com | 7.25/10 | 278,700 | 50,481 | Jan 2016 |
| 3497 | alixpartners.com | 7.25/10 | 7,300 | 2,827 | May 2017 |
| 3498 | mdec.my | 7.25/10 | 730 | 496 | Sep 2022 |
| 3499 | longmontcolorado.gov | 7.25/10 | 81,100 | 15,409 | Aug 2018 |
| 3500 | opcfoundation.org | 7.25/10 | 2,400 | 331 | Oct 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) →
Columns: domain, Open Page Rank, first seen, last seen, industry (from the site's own structured data, blank when none).