Websites Powered by mod_ssl
32,715 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
May 2022
Jun 2024
Jun 2026
Domains observed using mod_ssl in each month's HTTP Archive crawl,
Apr 2018 to Jun 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 9,686 mod_ssl sites with Chrome UX data, p75 values, Jun 2026.
Top countries
Japan
3,079
United States
2,338
South Korea
2,113
Germany
1,266
India
1,219
France
1,150
United Kingdom
1,049
Indonesia
1,035
Sites using mod_ssl by audience country, Chrome UX Report.
Top sites by authority
9+
<1% · 1 of 372 sites
8+
<1% · 46 of 7,677 sites
7+
<1% · 136 of 45,712 sites
6+
<1% · 212 of 110,136 sites
5+
<1% · 299 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 | mit.edu | 9.18/10 | 161,200 | 27,360 | Apr 2018 |
| 2 | washington.edu | 8.96/10 | 668,000 | 107,419 | May 2018 |
| 3 | gov.ru | 8.91/10 | 2,700 | 216 | Aug 2018 |
| 4 | nielsen.com | 8.75/10 | 89,300 | 35,566 | Aug 2018 |
| 5 | ucl.ac.uk | 8.74/10 | 154,800 | 93,062 | Aug 2018 |
| 6 | utah.edu | 8.74/10 | 474,600 | 10,598 | Aug 2018 |
| 7 | unibo.it | 8.68/10 | 11,100 | 4,872 | Aug 2018 |
| 8 | caltech.edu | 8.65/10 | 148,700 | 22,852 | Aug 2018 |
| 9 | ucm.es | 8.60/10 | 15,000 | 16,497 | Aug 2018 |
| 10 | unam.mx | 8.58/10 | 1,900 | 1,196 | Aug 2018 |
| 11 | cuni.cz | 8.56/10 | 4,400 | 1,637 | Aug 2018 |
| 12 | upm.es | 8.52/10 | 2,100 | 1,692 | Aug 2018 |
| 13 | keio.ac.jp | 8.52/10 | 9,400 | 1,068 | Aug 2018 |
| 14 | ladepeche.fr | 8.46/10 | 11,300 | 26,359 | Jan 2019 |
| 15 | austlii.edu.au | 8.44/10 | 7,600 | 8,156 | Dec 2023 |
| 16 | uni-muenster.de | 8.43/10 | 9,000 | 4,657 | Aug 2018 |
| 17 | education.fr | 8.39/10 | - | - | Oct 2024 |
| 18 | tohoku.ac.jp | 8.38/10 | 2,300 | 1,759 | Aug 2018 |
| 19 | index.hu | 8.37/10 | 9,800 | 5,526 | Jan 2019 |
| 20 | dyndns.org | 8.36/10 | - | - | Aug 2018 |
| 21 | fukuoka.lg.jp | 8.36/10 | - | - | Apr 2019 |
| 22 | ufmg.br | 8.36/10 | 3,300 | 1,765 | Aug 2018 |
| 23 | org.ru | 8.35/10 | - | - | Jan 2019 |
| 24 | com.ru | 8.27/10 | - | - | Jan 2019 |
| 25 | nagoya-u.ac.jp | 8.25/10 | 11 | 36 | Aug 2018 |
| 26 | uibk.ac.at | 8.24/10 | 7,200 | 4,770 | Dec 2024 |
| 27 | uj.edu.pl | 8.24/10 | 360 | 132 | Aug 2018 |
| 28 | usal.es | 8.22/10 | 3,200 | 1,130 | Aug 2018 |
| 29 | uc.pt | 8.21/10 | 3,500 | 1,118 | Aug 2018 |
| 30 | uni-kl.de | 8.17/10 | 5 | 16 | Aug 2018 |
| 31 | shu.edu | 8.16/10 | 63,100 | 35,652 | Dec 2025 |
| 32 | bfi.org.uk | 8.16/10 | 250,200 | 57,643 | Apr 2018 |
| 33 | unina.it | 8.10/10 | 2,800 | 1,842 | Aug 2018 |
| 34 | snu.ac.kr | 8.09/10 | 69 | 64 | Aug 2018 |
| 35 | uaf.edu | 8.05/10 | 149,500 | 49,693 | Aug 2018 |
| 36 | embrapa.br | 8.05/10 | 1,700 | 2,896 | Aug 2018 |
| 37 | bn.org.pl | 8.03/10 | 310 | 109 | Jan 2026 |
| 38 | msu.ru | 8.02/10 | 4,500 | 86 | Aug 2018 |
| 39 | bg.ac.rs | 8.02/10 | 68 | 28 | Aug 2018 |
| 40 | uc.cl | 8.02/10 | 2,800 | 2,417 | Aug 2018 |
| 41 | rajasthan.gov.in | 8.01/10 | 3,100 | 236 | Dec 2021 |
| 42 | uminho.pt | 8.01/10 | 300 | 85 | Aug 2018 |
| 43 | ntua.gr | 8.01/10 | 1,000 | 53 | Aug 2018 |
| 44 | madrid.org | 8.00/10 | 720 | 4,953 | Aug 2022 |
| 45 | uniandes.edu.co | 8.00/10 | 2,300 | 994 | Apr 2021 |
| 46 | umk.pl | 8.00/10 | 240 | 151 | Aug 2018 |
| 47 | no-ip.org | 7.99/10 | - | - | Jan 2019 |
| 48 | chula.ac.th | 7.99/10 | 5,600 | 2,737 | Aug 2018 |
| 49 | ddns.net | 7.98/10 | - | - | Jan 2019 |
| 50 | cirad.fr | 7.96/10 | 7,400 | 1,387 | Aug 2018 |
| 51 | tomsk.ru | 7.95/10 | 23 | 11 | Jan 2019 |
| 52 | jl.gov.cn | 7.92/10 | - | 1 | Jul 2021 |
| 53 | pw.edu.pl | 7.90/10 | 95 | 170 | Aug 2018 |
| 54 | yamaguchi.lg.jp | 7.88/10 | - | - | Mar 2023 |
| 55 | dothome.co.kr | 7.87/10 | - | 1 | Apr 2021 |
| 56 | anglican.org | 7.87/10 | 1,700 | 100 | Apr 2018 |
| 57 | cshlp.org | 7.87/10 | 13 | 65 | Aug 2018 |
| 58 | unal.edu.co | 7.85/10 | 1,200 | 240 | Aug 2018 |
| 59 | bme.hu | 7.81/10 | 1,300 | 299 | Aug 2018 |
| 60 | unipv.it | 7.76/10 | - | - | Aug 2018 |
| 61 | moph.go.th | 7.75/10 | 8 | 9 | Aug 2018 |
| 62 | karelia.ru | 7.74/10 | - | - | Jan 2019 |
| 63 | hinet.net | 7.71/10 | 120 | 43 | Aug 2018 |
| 64 | regione.fvg.it | 7.71/10 | 490 | 1,254 | May 2024 |
| 65 | unipr.it | 7.69/10 | 870 | 954 | Jan 2019 |
| 66 | bas.bg | 7.68/10 | 450 | 52 | Sep 2020 |
| 67 | senac.br | 7.66/10 | 21 | 49 | Aug 2018 |
| 68 | oru.se | 7.66/10 | 890 | 896 | Aug 2022 |
| 69 | kansai-u.ac.jp | 7.65/10 | 600 | 296 | May 2019 |
| 70 | tyc.edu.tw | 7.64/10 | - | 1 | Aug 2018 |
| 71 | cinematheque.fr | 7.58/10 | 1,800 | 1,910 | Feb 2025 |
| 72 | politicheagricole.it | 7.53/10 | - | - | Aug 2018 |
| 73 | uniba.sk | 7.51/10 | 260 | 148 | Aug 2018 |
| 74 | ddo.jp | 7.50/10 | - | - | Aug 2018 |
| 75 | u-ryukyu.ac.jp | 7.49/10 | 29 | 43 | Aug 2018 |
| 76 | hacettepe.edu.tr | 7.47/10 | 390 | 72 | Aug 2018 |
| 77 | skku.edu | 7.46/10 | 1,100 | 1,079 | Nov 2018 |
| 78 | lunion.fr | 7.46/10 | 1,500 | 5,011 | Aug 2018 |
| 79 | stuba.sk | 7.45/10 | 320 | 181 | Aug 2018 |
| 80 | moh.gov.my | 7.45/10 | 4,000 | 8,959 | Aug 2018 |
| 81 | ukrstat.gov.ua | 7.45/10 | 10 | 42 | Jun 2022 |
| 82 | imss.gob.mx | 7.45/10 | 21,200 | 45,204 | Aug 2018 |
| 83 | yamaguchi-u.ac.jp | 7.44/10 | 91 | 66 | Aug 2018 |
| 84 | siue.edu | 7.43/10 | 123,800 | 41,581 | Mar 2021 |
| 85 | kmib.co.kr | 7.42/10 | 43 | 44 | May 2025 |
| 86 | mta.hu | 7.42/10 | 83 | 137 | May 2019 |
| 87 | korea.ac.kr | 7.39/10 | 160 | 108 | Aug 2018 |
| 88 | jamaica-gleaner.com | 7.39/10 | 31,500 | 30,452 | Jan 2020 |
| 89 | datasus.gov.br | 7.39/10 | - | - | Oct 2025 |
| 90 | tu.ac.th | 7.38/10 | 1,500 | 101 | Jan 2019 |
| 91 | city.kyoto.jp | 7.37/10 | - | - | Aug 2022 |
| 92 | utn.edu.ar | 7.34/10 | 500 | 212 | Oct 2022 |
| 93 | tp.edu.tw | 7.34/10 | - | - | Aug 2018 |
| 94 | ac-dijon.fr | 7.33/10 | 82 | 93 | Aug 2018 |
| 95 | udelar.edu.uy | 7.32/10 | 240 | 197 | Aug 2018 |
| 96 | tku.edu.tw | 7.31/10 | - | 1 | Aug 2018 |
| 97 | tecnm.mx | 7.31/10 | 200 | 443 | May 2019 |
| 98 | pk.edu.pl | 7.31/10 | 66 | 18 | Aug 2018 |
| 99 | busan.go.kr | 7.30/10 | 10,900 | 1,130 | Jun 2023 |
| 100 | buffalostate.edu | 7.29/10 | - | - | 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) →