Websites Powered by Kestrel
36,535 websites tracked using Kestrel (Web servers) · docs.microsoft.com
Kestrel is a web server that delivers the site's pages. Its official site is docs.microsoft.com. PoweredBy tracks the websites that use Kestrel 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
5K
10K
15K
May 2019
Mar 2021
Jan 2023
Nov 2024
Sep 2026
Domains observed using Kestrel in each month's HTTP Archive crawl,
May 2019 to Sep 2026 · peak 13,017 in Sep 2026. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.7 s
INP 75 ms
CLS 0
TTFB 600 ms
Median site among 18,106 Kestrel sites with Chrome UX data, p75 values, Sep 2026.
Top countries
United States
7,567
United Kingdom
3,355
India
2,966
Germany
2,498
Brazil
2,478
Canada
2,287
France
1,989
Netherlands
1,967
Sites using Kestrel by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Automotive | 2.05% | 1,426 |
| Arts and entertainment | 0.53% | 217 |
| Government | 0.36% | 29 |
| Finance and insurance | 0.19% | 31 |
| Education | 0.16% | 79 |
| Software and apps | 0.14% | 158 |
| Non-profit and religious | 0.13% | 10 |
| Games | 0.10% | 5 |
| Travel and hospitality | 0.07% | 51 |
| Sports and fitness | 0.07% | 11 |
| News and media | 0.06% | 27 |
| Professional services | 0.05% | 19 |
Share of each industry's websites with a detected stack that use Kestrel; industries come from what sites declare in their own structured data.
Top sites by authority
9+
5% · 19 of 372 sites
8+
3% · 201 of 7,677 sites
7+
1% · 633 of 45,712 sites
6+
<1% · 1,057 of 110,136 sites
5+
<1% · 1,551 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Kestrel in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Kestrel
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | microsoft.com | 9.54/10 | 11,626,900 | 676,768 | May 2019 |
| 2 | who.int | 9.26/10 | 3,114,700 | 778,407 | Dec 2020 |
| 3 | harvard.edu | 9.24/10 | 472,700 | 11,444 | Jul 2025 |
| 4 | ca.gov | 9.23/10 | 1,455,600 | 26,086 | May 2019 |
| 5 | un.org | 9.21/10 | 2,209,200 | 439,253 | Apr 2023 |
| 6 | admin.ch | 9.18/10 | 4,200 | 753 | Nov 2022 |
| 7 | usda.gov | 9.14/10 | 474,600 | 136,928 | May 2024 |
| 8 | twitch.tv | 9.11/10 | 3,282,800 | 620,799 | Sep 2020 |
| 9 | berkeley.edu | 9.10/10 | 166,700 | 4,721 | Jul 2022 |
| 10 | hhs.gov | 9.10/10 | 1,457,200 | 246,424 | Jul 2021 |
| 11 | canada.ca | 9.08/10 | 2,129,800 | 995,010 | May 2019 |
| 12 | msn.com | 9.04/10 | 7,814,800 | 2,203,631 | Jul 2025 |
| 13 | mayoclinic.org | 9.04/10 | 60,718,700 | 3,415,662 | Oct 2021 |
| 14 | ny.gov | 9.04/10 | 675,900 | 50,004 | Mar 2021 |
| 15 | lemonde.fr | 9.03/10 | 267,300 | 164,559 | Oct 2021 |
| 16 | psu.edu | 9.01/10 | 580,400 | 80,390 | Aug 2022 |
| 17 | umich.edu | 9.01/10 | 36,500 | 1,974 | May 2025 |
| 18 | yale.edu | 9.01/10 | 177,900 | 5,845 | Nov 2024 |
| 19 | uk.com | 9.00/10 | 2 | 12 | Jul 2019 |
| 20 | cloud.microsoft | 8.99/10 | - | - | Oct 2025 |
| 21 | service.gov.uk | 8.99/10 | - | - | Jan 2023 |
| 22 | texas.gov | 8.98/10 | 917,200 | 38,560 | May 2019 |
| 23 | washington.edu | 8.96/10 | 663,900 | 86,604 | Feb 2026 |
| 24 | sba.gov | 8.95/10 | 1,485,000 | 246,243 | May 2021 |
| 25 | ethz.ch | 8.95/10 | 12,900 | 11,869 | Nov 2022 |
| 26 | maine.gov | 8.93/10 | 1,108,600 | 366,560 | Mar 2024 |
| 27 | pwc.com | 8.93/10 | 289,200 | 144,910 | Dec 2020 |
| 28 | ucla.edu | 8.93/10 | 410,700 | 13,782 | Apr 2020 |
| 29 | wa.gov | 8.93/10 | 719,700 | 7,869 | Jul 2019 |
| 30 | bayern.de | 8.92/10 | 12,500 | 512 | Apr 2026 |
| 31 | nyu.edu | 8.90/10 | 674,000 | 142,032 | Nov 2023 |
| 32 | nyc.gov | 8.90/10 | 3,946,700 | 716,970 | Aug 2019 |
| 33 | usc.edu | 8.89/10 | 362,800 | 14,354 | Apr 2020 |
| 34 | iheart.com | 8.88/10 | 1,878,100 | 578,548 | Mar 2025 |
| 35 | azurewebsites.net | 8.87/10 | - | - | May 2019 |
| 36 | cam.ac.uk | 8.87/10 | 208,200 | 35,354 | May 2019 |
| 37 | us.com | 8.86/10 | 32 | 8 | Oct 2023 |
| 38 | japanpost.jp | 8.85/10 | 55 | 78 | Sep 2025 |
| 39 | intuit.com | 8.84/10 | 806,400 | 28,834 | Sep 2020 |
| 40 | shutterstock.com | 8.83/10 | 14,545,700 | 6,372,891 | Jun 2024 |
| 41 | illinois.edu | 8.83/10 | 47,000 | 3,612 | May 2019 |
| 42 | ey.com | 8.82/10 | 242,800 | 77,398 | Sep 2022 |
| 43 | virginia.gov | 8.82/10 | 338,000 | 19,778 | Oct 2024 |
| 44 | utoronto.ca | 8.81/10 | 42,800 | 10,094 | Aug 2026 |
| 45 | utah.gov | 8.80/10 | 129,700 | 22,115 | May 2021 |
| 46 | cancer.org | 8.79/10 | 1,602,900 | 252,144 | Mar 2020 |
| 47 | uzh.ch | 8.79/10 | 7,800 | 3,263 | Nov 2023 |
| 48 | mn.gov | 8.78/10 | 964,900 | 239,950 | Jun 2020 |
| 49 | kpmg.com | 8.77/10 | 125,800 | 81,369 | Nov 2025 |
| 50 | gouv.qc.ca | 8.77/10 | - | - | Jun 2020 |
| 51 | tamu.edu | 8.76/10 | 349,600 | 9,431 | Apr 2023 |
| 52 | ohio.gov | 8.76/10 | 366,800 | 33,026 | Dec 2022 |
| 53 | criteo.com | 8.73/10 | 8,800 | 3,494 | Sep 2021 |
| 54 | virginia.edu | 8.73/10 | 265,100 | 10,889 | Sep 2026 |
| 55 | target.com | 8.71/10 | 22,063,400 | 5,697,207 | Nov 2022 |
| 56 | ikea.com | 8.71/10 | 10,029,900 | 1,215,786 | Oct 2019 |
| 57 | dell.com | 8.70/10 | 3,380,200 | 388,592 | Apr 2020 |
| 58 | gov.bc.ca | 8.69/10 | 2,200 | 880 | Apr 2020 |
| 59 | cpsc.gov | 8.69/10 | 376,900 | 130,993 | Sep 2026 |
| 60 | ticketmaster.com | 8.68/10 | 16,346,800 | 796,676 | Aug 2022 |
| 61 | mastercard.com | 8.66/10 | 866,600 | 105,364 | Nov 2021 |
| 62 | nba.com | 8.66/10 | 22,786,600 | 584,800 | Jul 2023 |
| 63 | spglobal.com | 8.66/10 | 643,400 | 138,313 | Jun 2020 |
| 64 | uw.edu | 8.66/10 | - | 3 | Jul 2019 |
| 65 | state.mn.us | 8.65/10 | 1,200 | 64 | Aug 2022 |
| 66 | paris.fr | 8.65/10 | 24,100 | 12,376 | Sep 2022 |
| 67 | uq.edu.au | 8.65/10 | 9,700 | 1,554 | Sep 2025 |
| 68 | vt.edu | 8.64/10 | 215,100 | 20,548 | May 2023 |
| 69 | experian.com | 8.63/10 | 3,487,900 | 259,117 | May 2025 |
| 70 | orf.at | 8.63/10 | 4,100 | 1,734 | May 2019 |
| 71 | wi.gov | 8.63/10 | - | - | Jun 2020 |
| 72 | nintendo.com | 8.62/10 | 7,348,900 | 497,989 | Feb 2026 |
| 73 | alaska.gov | 8.62/10 | 61,700 | 7,776 | Aug 2022 |
| 74 | kuronekoyamato.co.jp | 8.61/10 | 11,400 | 7,297 | Dec 2024 |
| 75 | iu.edu | 8.61/10 | 79,300 | 4,571 | Feb 2024 |
| 76 | tum.de | 8.61/10 | 7,800 | 7,642 | Sep 2025 |
| 77 | datatilsynet.dk | 8.60/10 | 25 | 148 | Jul 2026 |
| 78 | dartmouth.edu | 8.60/10 | 37,800 | 10,895 | Apr 2020 |
| 79 | nfpa.org | 8.59/10 | 570,700 | 59,562 | Mar 2021 |
| 80 | ri.gov | 8.59/10 | 305,500 | 10,044 | Jul 2021 |
| 81 | nd.edu | 8.59/10 | 56,800 | 8,385 | Apr 2026 |
| 82 | nd.gov | 8.58/10 | 111,100 | 14,772 | Oct 2025 |
| 83 | imperial.ac.uk | 8.57/10 | 65,500 | 49,885 | Dec 2025 |
| 84 | lacounty.gov | 8.57/10 | 301,200 | 21,179 | Jul 2019 |
| 85 | dhl.com | 8.56/10 | 1,187,200 | 132,595 | Sep 2025 |
| 86 | emory.edu | 8.56/10 | 202,500 | 15,781 | Nov 2025 |
| 87 | jreast.co.jp | 8.56/10 | 45,600 | 12,579 | Jul 2026 |
| 88 | similarweb.com | 8.55/10 | 167,400 | 44,955 | Jul 2026 |
| 89 | accor.com | 8.55/10 | - | - | May 2024 |
| 90 | uky.edu | 8.55/10 | 269,500 | 28,234 | Aug 2022 |
| 91 | uoregon.edu | 8.55/10 | 156,500 | 8,436 | Nov 2024 |
| 92 | ubisoft.com | 8.53/10 | 978,000 | 118,412 | Jun 2020 |
| 93 | bl.uk | 8.53/10 | 28,200 | 14,429 | Nov 2025 |
| 94 | alabama.gov | 8.53/10 | 53,800 | 10,184 | May 2019 |
| 95 | ga.gov | 8.53/10 | - | - | Nov 2022 |
| 96 | fsu.edu | 8.53/10 | 245,500 | 9,405 | Nov 2021 |
| 97 | radio-canada.ca | 8.53/10 | 44 | 183 | May 2019 |
| 98 | morningstar.com | 8.52/10 | 3,059,300 | 538,025 | Sep 2026 |
| 99 | manchester.ac.uk | 8.52/10 | 64,000 | 18,257 | Mar 2026 |
| 100 | iucn.org | 8.52/10 | 56,700 | 20,244 | Jul 2024 |
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).
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