Websites Powered by PerimeterX
30,875 websites tracked using PerimeterX (Security) · www.perimeterx.com
PerimeterX is a security tool that protects the site from attacks. Its official site is perimeterx.com. PoweredBy tracks the websites that use PerimeterX across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the security ecosystem.
Usage trend
5K
10K
15K
Jul 2021
Nov 2022
Feb 2024
Jun 2025
Sep 2026
Domains observed using PerimeterX in each month's HTTP Archive crawl,
Jul 2021 to Sep 2026 · peak 10,930 in Nov 2023. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 2.1 s
INP 75 ms
CLS 0
TTFB 900 ms
Median site among 7,126 PerimeterX sites with Chrome UX data, p75 values, Sep 2026.
Top countries
United States
4,735
India
2,115
Canada
1,865
United Kingdom
1,760
France
1,230
Germany
1,200
Australia
1,162
Spain
1,091
Sites using PerimeterX by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| News and media | 0.36% | 151 |
| Arts and entertainment | 0.13% | 54 |
| Non-profit and religious | 0.13% | 10 |
| Education | 0.09% | 45 |
| Professional services | 0.06% | 23 |
| Finance and insurance | 0.05% | 9 |
| Blogs and publishing | 0.05% | 13 |
| Retail | 0.05% | 149 |
| Software and apps | 0.04% | 52 |
| Sports and fitness | 0.04% | 6 |
| Beauty and wellness | 0.03% | 9 |
| Legal | 0.02% | 4 |
Share of each industry's websites with a detected stack that use PerimeterX; industries come from what sites declare in their own structured data.
Top sites by authority
9+
6% · 21 of 372 sites
8+
2% · 131 of 7,677 sites
7+
<1% · 363 of 45,712 sites
6+
<1% · 610 of 110,136 sites
5+
<1% · 865 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running PerimeterX in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using PerimeterX
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | linkedin.com | 9.82/10 | 70,067,900 | 12,159,830 | Nov 2024 |
| 2 | cloudfront.net | 9.47/10 | - | - | Nov 2022 |
| 3 | github.io | 9.43/10 | 1,800 | 1 | Nov 2025 |
| 4 | blogspot.com | 9.39/10 | - | - | Aug 2021 |
| 5 | washingtonpost.com | 9.26/10 | 2,034,200 | 1,255,983 | Apr 2026 |
| 6 | harvard.edu | 9.24/10 | 472,700 | 11,444 | Nov 2025 |
| 7 | ca.gov | 9.23/10 | 1,455,600 | 26,086 | Nov 2025 |
| 8 | live.com | 9.20/10 | 1 | 1 | Jun 2024 |
| 9 | npr.org | 9.16/10 | 10,414,500 | 1,914,771 | Jun 2026 |
| 10 | pages.dev | 9.14/10 | - | - | Feb 2026 |
| 11 | myshopify.com | 9.12/10 | - | - | Sep 2021 |
| 12 | bloomberg.com | 9.12/10 | 5,922,000 | 1,245,801 | Jul 2021 |
| 13 | businessinsider.com | 9.11/10 | 6,219,300 | 2,952,834 | Mar 2026 |
| 14 | techcrunch.com | 9.09/10 | 538,200 | 242,123 | Aug 2025 |
| 15 | vercel.app | 9.05/10 | - | - | Jun 2023 |
| 16 | ieee.org | 9.02/10 | 37,200 | 20,161 | Aug 2026 |
| 17 | senate.gov | 9.02/10 | 1,909,300 | 143,781 | Nov 2025 |
| 18 | netlify.app | 9.01/10 | 2 | 2 | Apr 2023 |
| 19 | psu.edu | 9.01/10 | 580,400 | 80,390 | Oct 2024 |
| 20 | uk.com | 9.00/10 | 2 | 12 | Aug 2021 |
| 21 | upenn.edu | 9.00/10 | 178,900 | 4,794 | Jun 2026 |
| 22 | jstor.org | 8.98/10 | 751,000 | 664,445 | Nov 2021 |
| 23 | change.org | 8.96/10 | 209,800 | 138,005 | Jul 2021 |
| 24 | webflow.io | 8.95/10 | 79 | 1 | Oct 2024 |
| 25 | walmart.com | 8.91/10 | 77,455,200 | 10,944,972 | Jul 2021 |
| 26 | vice.com | 8.89/10 | 1,240,100 | 474,045 | Sep 2024 |
| 27 | us.com | 8.86/10 | 32 | 8 | Mar 2026 |
| 28 | purdue.edu | 8.86/10 | 746,900 | 132,133 | Sep 2022 |
| 29 | northwestern.edu | 8.86/10 | 193,400 | 45,922 | Nov 2025 |
| 30 | sap.com | 8.83/10 | 526,000 | 58,757 | Jan 2022 |
| 31 | thehill.com | 8.83/10 | 1,102,400 | 438,790 | Apr 2023 |
| 32 | illinois.edu | 8.83/10 | 47,000 | 3,612 | Jan 2026 |
| 33 | ucdavis.edu | 8.83/10 | 381,100 | 81,485 | Aug 2026 |
| 34 | aarp.org | 8.82/10 | 1,965,700 | 572,392 | Sep 2026 |
| 35 | it.com | 8.81/10 | - | - | Mar 2026 |
| 36 | owasp.org | 8.81/10 | 69,200 | 29,196 | Mar 2025 |
| 37 | fraunhofer.de | 8.79/10 | 2,900 | 3,059 | Nov 2025 |
| 38 | georgetown.edu | 8.78/10 | 136,900 | 25,266 | May 2026 |
| 39 | odoo.com | 8.77/10 | 63,000 | 27,307 | Aug 2026 |
| 40 | thesun.co.uk | 8.76/10 | 549,800 | 570,089 | Sep 2023 |
| 41 | herokuapp.com | 8.74/10 | - | - | Apr 2026 |
| 42 | producthunt.com | 8.74/10 | 47,000 | 26,193 | Aug 2024 |
| 43 | lovable.app | 8.73/10 | - | - | Nov 2025 |
| 44 | target.com | 8.71/10 | 22,063,400 | 5,697,207 | Aug 2025 |
| 45 | chicagotribune.com | 8.70/10 | 426,300 | 398,787 | Sep 2026 |
| 46 | carrd.co | 8.68/10 | 57,600 | 5,248 | Jul 2021 |
| 47 | unwomen.org | 8.68/10 | 109,300 | 44,461 | Nov 2025 |
| 48 | gatech.edu | 8.68/10 | 128,100 | 22,038 | Nov 2025 |
| 49 | navy.mil | 8.68/10 | 320,800 | 44,371 | Dec 2025 |
| 50 | fiverr.com | 8.66/10 | 168,600 | 84,643 | Jul 2021 |
| 51 | culture.gouv.fr | 8.65/10 | 1,800 | 2,659 | Aug 2026 |
| 52 | usp.br | 8.65/10 | 1 | 19 | Oct 2024 |
| 53 | redis.io | 8.64/10 | 53,300 | 36,680 | Oct 2024 |
| 54 | chron.com | 8.62/10 | 335,800 | 278,648 | Mar 2023 |
| 55 | snopes.com | 8.61/10 | 271,800 | 129,020 | Sep 2024 |
| 56 | dartmouth.edu | 8.60/10 | 37,800 | 10,895 | Oct 2025 |
| 57 | ucm.es | 8.60/10 | 15,000 | 16,497 | Dec 2025 |
| 58 | nd.edu | 8.59/10 | 56,800 | 8,385 | Oct 2025 |
| 59 | nydailynews.com | 8.57/10 | 159,300 | 233,108 | Jul 2023 |
| 60 | rice.edu | 8.56/10 | 255,400 | 12,718 | Nov 2025 |
| 61 | beehiiv.com | 8.55/10 | 37,600 | 2,304 | Aug 2024 |
| 62 | accor.com | 8.55/10 | - | - | Jan 2024 |
| 63 | thoughtco.com | 8.55/10 | 4,103,900 | 839,697 | Aug 2026 |
| 64 | homedepot.com | 8.55/10 | 47,957,500 | 4,438,616 | Jul 2021 |
| 65 | rwth-aachen.de | 8.55/10 | 640 | 1,476 | May 2026 |
| 66 | uoregon.edu | 8.55/10 | 156,500 | 8,436 | Nov 2025 |
| 67 | 9to5mac.com | 8.54/10 | 196,100 | 197,403 | May 2026 |
| 68 | nrdc.org | 8.53/10 | 237,300 | 82,287 | Jun 2026 |
| 69 | wbur.org | 8.52/10 | 289,600 | 199,684 | Jul 2026 |
| 70 | pandora.com | 8.50/10 | 384,200 | 52,179 | Dec 2024 |
| 71 | asus.com | 8.50/10 | 1,078,400 | 375,127 | Dec 2025 |
| 72 | denverpost.com | 8.48/10 | 279,700 | 217,911 | Sep 2026 |
| 73 | mercurynews.com | 8.48/10 | 209,200 | 219,660 | Sep 2026 |
| 74 | zoominfo.com | 8.47/10 | 1,906,900 | 1,462,577 | Jul 2021 |
| 75 | de.com | 8.46/10 | - | 2 | Aug 2026 |
| 76 | texastribune.org | 8.45/10 | 376,400 | 113,630 | May 2026 |
| 77 | seekingalpha.com | 8.42/10 | 2,576,600 | 513,329 | Jul 2021 |
| 78 | theintercept.com | 8.41/10 | 38,400 | 19,052 | Nov 2025 |
| 79 | adb.org | 8.40/10 | 27,000 | 13,792 | Feb 2026 |
| 80 | nj.com | 8.39/10 | 848,000 | 517,468 | Jun 2026 |
| 81 | consumeraffairs.com | 8.36/10 | 1,023,800 | 263,604 | Jul 2023 |
| 82 | brennancenter.org | 8.36/10 | 405,900 | 78,726 | Aug 2026 |
| 83 | baltimoresun.com | 8.36/10 | 81,700 | 109,152 | Sep 2026 |
| 84 | audubon.org | 8.36/10 | 1,156,900 | 118,514 | Nov 2025 |
| 85 | rescue.org | 8.35/10 | 111,400 | 37,583 | May 2026 |
| 86 | sandiegouniontribune.com | 8.35/10 | 298,700 | 214,744 | Sep 2026 |
| 87 | oregonlive.com | 8.35/10 | 997,700 | 385,683 | Jun 2026 |
| 88 | cigna.com | 8.34/10 | 1,239,200 | 206,084 | Jun 2026 |
| 89 | bhphotovideo.com | 8.33/10 | 1,397,700 | 425,380 | Jul 2021 |
| 90 | mlive.com | 8.32/10 | 982,200 | 456,032 | Jun 2026 |
| 91 | tampabay.com | 8.32/10 | 265,500 | 180,919 | Sep 2026 |
| 92 | sciencealert.com | 8.32/10 | 365,600 | 128,333 | Aug 2025 |
| 93 | networkforgood.com | 8.31/10 | - | - | Nov 2025 |
| 94 | cleveland.com | 8.31/10 | 838,700 | 471,250 | Jun 2026 |
| 95 | wm.edu | 8.31/10 | 209,500 | 38,938 | Sep 2025 |
| 96 | electrek.co | 8.31/10 | 196,800 | 117,651 | May 2026 |
| 97 | ti.com | 8.30/10 | 249,900 | 69,001 | Jul 2022 |
| 98 | rei.com | 8.29/10 | 3,090,800 | 610,507 | Jun 2026 |
| 99 | metricool.com | 8.27/10 | 46,500 | 35,364 | Sep 2026 |
| 100 | iit.edu | 8.27/10 | 80,200 | 26,444 | Sep 2026 |
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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