Websites Powered by mod_ssl
32,596 websites tracked using mod_ssl (Web server extensions) · modssl.org
mod_ssl is a web-server extension or module. Its official site is modssl.org. PoweredBy tracks the websites that use mod_ssl across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the web server extensions ecosystem.
Usage trend
10K
20K
30K
Apr 2018
May 2020
Jul 2022
Aug 2024
Sep 2026
Domains observed using mod_ssl in each month's HTTP Archive crawl,
Apr 2018 to Sep 2026 · peak 24,831 in May 2019. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.5 s
INP 50 ms
CLS 0
TTFB 600 ms
Median site among 9,221 mod_ssl sites with Chrome UX data, p75 values, Sep 2026.
Top countries
Japan
2,538
United States
2,061
South Korea
1,782
Germany
1,065
India
1,063
France
986
United Kingdom
912
Spain
899
Sites using mod_ssl by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Education | 0.04% | 20 |
| Government | 0.04% | 3 |
| Travel and hospitality | 0.04% | 27 |
| Arts and entertainment | 0.02% | 7 |
| Non-profit and religious | 0.01% | 1 |
| News and media | <0.01% | 4 |
| Automotive | <0.01% | 5 |
| Real estate | <0.01% | 5 |
| Sports and fitness | <0.01% | 1 |
| Retail | <0.01% | 18 |
| Professional services | <0.01% | 2 |
| Blogs and publishing | <0.01% | 1 |
Share of each industry's websites with a detected stack that use mod_ssl; industries come from what sites declare in their own structured data.
Top sites by authority
9+
<1% · 1 of 372 sites
8+
<1% · 37 of 7,677 sites
7+
<1% · 115 of 45,712 sites
6+
<1% · 182 of 110,136 sites
5+
<1% · 254 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running mod_ssl in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using mod_ssl
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | bbc.co.uk | 9.18/10 | 6,004,800 | 2,144,161 | Jun 2024 |
| 2 | gov.ru | 8.91/10 | 2,700 | 216 | Aug 2018 |
| 3 | nielsen.com | 8.75/10 | 89,300 | 35,566 | Aug 2018 |
| 4 | ucl.ac.uk | 8.74/10 | 154,800 | 93,062 | Aug 2018 |
| 5 | caltech.edu | 8.65/10 | 148,200 | 20,173 | Aug 2018 |
| 6 | unam.mx | 8.58/10 | 1,900 | 1,196 | Jan 2016 |
| 7 | upm.es | 8.52/10 | 2,100 | 1,692 | Aug 2018 |
| 8 | ladepeche.fr | 8.46/10 | 11,300 | 26,359 | Jan 2019 |
| 9 | uwo.ca | 8.44/10 | 24,700 | 12,317 | Apr 2019 |
| 10 | tohoku.ac.jp | 8.38/10 | 2,300 | 1,759 | Aug 2018 |
| 11 | dyndns.org | 8.36/10 | - | - | Aug 2018 |
| 12 | fukuoka.lg.jp | 8.36/10 | - | - | Apr 2019 |
| 13 | ufmg.br | 8.36/10 | 3,300 | 1,765 | Aug 2018 |
| 14 | org.ru | 8.35/10 | - | - | Jan 2019 |
| 15 | com.ru | 8.27/10 | - | - | Jan 2019 |
| 16 | vector.co.jp | 8.25/10 | 110 | 403 | Aug 2018 |
| 17 | nagoya-u.ac.jp | 8.25/10 | 11 | 36 | Aug 2018 |
| 18 | ntu.edu.tw | 8.24/10 | 1,500 | 817 | Jan 2016 |
| 19 | uibk.ac.at | 8.24/10 | 7,200 | 4,770 | Dec 2024 |
| 20 | uj.edu.pl | 8.24/10 | 360 | 132 | Aug 2018 |
| 21 | usal.es | 8.22/10 | 3,200 | 1,130 | Aug 2018 |
| 22 | uc.pt | 8.21/10 | 3,500 | 1,118 | Aug 2018 |
| 23 | shu.edu | 8.16/10 | 62,900 | 25,915 | Dec 2025 |
| 24 | bfi.org.uk | 8.16/10 | 250,200 | 57,643 | Jan 2016 |
| 25 | unina.it | 8.10/10 | 2,800 | 1,842 | Aug 2018 |
| 26 | snu.ac.kr | 8.09/10 | 69 | 64 | Aug 2018 |
| 27 | uaf.edu | 8.05/10 | 149,200 | 40,239 | Aug 2018 |
| 28 | embrapa.br | 8.05/10 | 1,700 | 2,896 | Aug 2018 |
| 29 | bn.org.pl | 8.03/10 | 310 | 109 | Jan 2026 |
| 30 | msu.ru | 8.02/10 | 4,500 | 86 | Aug 2018 |
| 31 | bg.ac.rs | 8.02/10 | 68 | 28 | Aug 2018 |
| 32 | uc.cl | 8.02/10 | 2,800 | 2,417 | Aug 2018 |
| 33 | uminho.pt | 8.01/10 | 300 | 85 | Aug 2018 |
| 34 | ntua.gr | 8.01/10 | 1,000 | 53 | Aug 2018 |
| 35 | madrid.org | 8.00/10 | 720 | 4,953 | Aug 2022 |
| 36 | justice.fr | 8.00/10 | 410 | 977 | Jan 2021 |
| 37 | umk.pl | 8.00/10 | 240 | 151 | Aug 2018 |
| 38 | chula.ac.th | 7.99/10 | 5,600 | 2,737 | Aug 2018 |
| 39 | ddns.net | 7.98/10 | - | - | Jan 2019 |
| 40 | tomsk.ru | 7.95/10 | 23 | 11 | Jan 2017 |
| 41 | pw.edu.pl | 7.90/10 | 95 | 170 | Aug 2018 |
| 42 | yamaguchi.lg.jp | 7.88/10 | - | - | Mar 2023 |
| 43 | dothome.co.kr | 7.87/10 | - | 1 | Apr 2021 |
| 44 | anglican.org | 7.87/10 | 1,700 | 100 | Jan 2016 |
| 45 | duckdns.org | 7.86/10 | 150 | 511 | Aug 2026 |
| 46 | unal.edu.co | 7.85/10 | 1,200 | 240 | Aug 2018 |
| 47 | karelia.ru | 7.74/10 | - | - | Jul 2016 |
| 48 | u-szeged.hu | 7.74/10 | 880 | 213 | Aug 2018 |
| 49 | cjb.net | 7.73/10 | - | - | Sep 2022 |
| 50 | hinet.net | 7.71/10 | 120 | 43 | Aug 2018 |
| 51 | regione.fvg.it | 7.71/10 | 490 | 1,254 | May 2024 |
| 52 | unipr.it | 7.69/10 | 870 | 954 | Jan 2019 |
| 53 | bas.bg | 7.68/10 | 450 | 52 | Sep 2020 |
| 54 | senac.br | 7.66/10 | 21 | 49 | Aug 2018 |
| 55 | tyc.edu.tw | 7.64/10 | - | 1 | Aug 2018 |
| 56 | politicheagricole.it | 7.53/10 | - | - | Aug 2018 |
| 57 | uniba.sk | 7.51/10 | 260 | 148 | Aug 2018 |
| 58 | ddo.jp | 7.50/10 | - | - | Aug 2018 |
| 59 | u-ryukyu.ac.jp | 7.49/10 | 29 | 43 | Aug 2018 |
| 60 | hacettepe.edu.tr | 7.47/10 | 390 | 72 | Aug 2018 |
| 61 | lunion.fr | 7.46/10 | 1,500 | 5,011 | Aug 2018 |
| 62 | stuba.sk | 7.45/10 | 320 | 181 | Aug 2018 |
| 63 | moh.gov.my | 7.45/10 | 4,000 | 8,959 | Aug 2018 |
| 64 | ukrstat.gov.ua | 7.45/10 | 10 | 42 | Jun 2022 |
| 65 | imss.gob.mx | 7.45/10 | 21,200 | 45,204 | Aug 2018 |
| 66 | yamaguchi-u.ac.jp | 7.44/10 | 91 | 66 | Jan 2016 |
| 67 | siue.edu | 7.43/10 | 123,400 | 25,353 | Mar 2021 |
| 68 | kmib.co.kr | 7.42/10 | 43 | 44 | May 2025 |
| 69 | mta.hu | 7.42/10 | 83 | 137 | May 2019 |
| 70 | webster.edu | 7.41/10 | 30,800 | 20,962 | Jan 2016 |
| 71 | korea.ac.kr | 7.39/10 | 160 | 108 | Aug 2018 |
| 72 | jamaica-gleaner.com | 7.39/10 | 31,500 | 30,452 | Jan 2020 |
| 73 | tu.ac.th | 7.38/10 | 1,500 | 101 | Jan 2019 |
| 74 | unicen.edu.ar | 7.35/10 | 23 | 184 | Aug 2018 |
| 75 | utn.edu.ar | 7.34/10 | 500 | 212 | Oct 2022 |
| 76 | tp.edu.tw | 7.34/10 | - | - | Jan 2016 |
| 77 | ac-dijon.fr | 7.33/10 | 82 | 93 | Aug 2018 |
| 78 | udelar.edu.uy | 7.32/10 | 240 | 197 | Aug 2018 |
| 79 | tku.edu.tw | 7.31/10 | - | 1 | Aug 2018 |
| 80 | tecnm.mx | 7.31/10 | 200 | 443 | May 2019 |
| 81 | busan.go.kr | 7.30/10 | 10,900 | 1,130 | Jun 2023 |
| 82 | ac.ru | 7.26/10 | - | - | Oct 2016 |
| 83 | bib-bvb.de | 7.25/10 | 2 | 9 | Aug 2018 |
| 84 | kanagawa-u.ac.jp | 7.25/10 | 75 | 52 | Aug 2022 |
| 85 | airnav.com | 7.24/10 | 965,100 | 55,937 | Jan 2016 |
| 86 | condusef.gob.mx | 7.23/10 | 3,100 | 6,804 | Sep 2026 |
| 87 | p-world.co.jp | 7.21/10 | 20 | 43 | Mar 2023 |
| 88 | nsc.ru | 7.19/10 | 3 | 35 | Jan 2016 |
| 89 | ait.ac.th | 7.18/10 | 730 | 481 | Aug 2018 |
| 90 | sevilla.org | 7.17/10 | 1,300 | 2,701 | Feb 2018 |
| 91 | univ.kiev.ua | 7.10/10 | - | - | Aug 2018 |
| 92 | whitman.edu | 7.10/10 | 97,000 | 20,934 | Aug 2018 |
| 93 | chubu.ac.jp | 7.10/10 | 15 | 50 | Jul 2019 |
| 94 | go.ro | 7.09/10 | - | - | May 2026 |
| 95 | previdencia.gov.br | 7.08/10 | 100 | 94 | Aug 2018 |
| 96 | secretariasenado.gov.co | 7.07/10 | 1,700 | 3,821 | Jun 2025 |
| 97 | zapto.org | 7.06/10 | 21 | 1 | Jul 2026 |
| 98 | iium.edu.my | 7.05/10 | 4,000 | 5,034 | Aug 2018 |
| 99 | jus.gob.ar | 7.03/10 | - | - | Aug 2018 |
| 100 | irk.ru | 7.02/10 | 19 | 15 | 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) →
Columns: domain, Open Page Rank, first seen, last seen, industry (from the site's own structured data, blank when none).