Websites Powered by Basic
1,128 websites tracked using Basic (Security) · tools.ietf.org
Basic is a security tool that protects the site from attacks. Its official site is tools.ietf.org. PoweredBy tracks the websites that use Basic 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
200
400
600
800
Apr 2021
Aug 2022
Jan 2024
May 2025
Sep 2026
Domains observed using Basic in each month's HTTP Archive crawl,
Apr 2021 to Sep 2026 · peak 653 in Feb 2024. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.5 s
INP 75 ms
CLS 0
TTFB 700 ms
Median site among 635 Basic sites with Chrome UX data, p75 values, Sep 2026.
Top countries
United States
210
Japan
185
France
135
Canada
123
Germany
122
India
118
United Kingdom
101
Spain
93
Sites using Basic by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Games | 0.02% | 1 |
| Non-profit and religious | 0.01% | 1 |
| Arts and entertainment | <0.01% | 2 |
| News and media | <0.01% | 2 |
| Legal | <0.01% | 1 |
| Blogs and publishing | <0.01% | 1 |
| Education | <0.01% | 2 |
| Retail | <0.01% | 9 |
| Software and apps | <0.01% | 1 |
Share of each industry's websites with a detected stack that use Basic; industries come from what sites declare in their own structured data.
Top sites by authority
9+
0% · 0 of 372 sites
8+
<1% · 7 of 7,677 sites
7+
<1% · 35 of 45,712 sites
6+
<1% · 53 of 110,136 sites
5+
<1% · 69 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Basic in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Basic
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | u-tokyo.ac.jp | 8.71/10 | 25,200 | 7,795 | Aug 2022 |
| 2 | education.gouv.fr | 8.64/10 | 7,000 | 6,860 | May 2021 |
| 3 | zh.ch | 8.32/10 | 2,200 | 1,780 | May 2023 |
| 4 | tsukuba.ac.jp | 8.28/10 | 1,800 | 517 | May 2023 |
| 5 | kyushu-u.ac.jp | 8.28/10 | 680 | 731 | Aug 2022 |
| 6 | shoper.pl | 8.25/10 | 79 | 62 | Feb 2026 |
| 7 | kyoto.lg.jp | 8.24/10 | - | - | Jan 2025 |
| 8 | naszemiasto.pl | 7.98/10 | 110 | 509 | May 2023 |
| 9 | mie.lg.jp | 7.98/10 | - | - | Dec 2024 |
| 10 | pref.kagoshima.jp | 7.97/10 | 53 | 42 | Apr 2024 |
| 11 | city.sagamihara.kanagawa.jp | 7.65/10 | 8 | 15 | Oct 2025 |
| 12 | kansai-u.ac.jp | 7.65/10 | 600 | 296 | Aug 2022 |
| 13 | nagasaki-u.ac.jp | 7.61/10 | 4 | 7 | Aug 2022 |
| 14 | ac-paris.fr | 7.47/10 | 99 | 318 | Apr 2021 |
| 15 | kagoshima-u.ac.jp | 7.47/10 | 48 | 23 | Aug 2022 |
| 16 | modernamuseet.se | 7.47/10 | 3,800 | 1,977 | Jun 2026 |
| 17 | yokohama-cu.ac.jp | 7.46/10 | 320 | 53 | Oct 2023 |
| 18 | tufs.ac.jp | 7.43/10 | 1,800 | 547 | Apr 2026 |
| 19 | funabashi.lg.jp | 7.42/10 | - | - | Jan 2026 |
| 20 | mytischtennis.de | 7.38/10 | 70 | 300 | Aug 2025 |
| 21 | screen.co.jp | 7.38/10 | 520 | 320 | Oct 2024 |
| 22 | newsbank.com | 7.38/10 | 960 | 633 | Mar 2022 |
| 23 | kyutech.ac.jp | 7.36/10 | 18 | 30 | Sep 2025 |
| 24 | ac-poitiers.fr | 7.33/10 | 82 | 125 | Apr 2021 |
| 25 | ac-nantes.fr | 7.26/10 | 62 | 265 | May 2021 |
| 26 | gakushuin.ac.jp | 7.20/10 | 13 | 20 | Aug 2022 |
| 27 | tokyo-shoseki.co.jp | 7.18/10 | 4 | 10 | Aug 2025 |
| 28 | ac-amiens.fr | 7.14/10 | 14 | 69 | May 2021 |
| 29 | nationalgridus.com | 7.11/10 | 217,100 | 53,477 | Apr 2021 |
| 30 | ac-strasbourg.fr | 7.11/10 | 9 | 85 | May 2021 |
| 31 | nanzan-u.ac.jp | 7.10/10 | 410 | 78 | Aug 2022 |
| 32 | umss.edu.bo | 7.02/10 | 120 | 62 | May 2021 |
| 33 | unitbv.ro | 7.02/10 | 310 | 151 | Apr 2021 |
| 34 | grips.ac.jp | 7.02/10 | 190 | 256 | Jul 2024 |
| 35 | ac-besancon.fr | 7.00/10 | 7 | 44 | Apr 2021 |
| 36 | dievolkswirtschaft.ch | 6.93/10 | 4 | 61 | Dec 2022 |
| 37 | oit.ac.jp | 6.89/10 | 120 | 62 | May 2024 |
| 38 | future-processing.com | 6.86/10 | 4,200 | 1,921 | May 2021 |
| 39 | ous.ac.jp | 6.79/10 | 32 | 20 | May 2023 |
| 40 | knb.ne.jp | 6.70/10 | - | 6 | Sep 2026 |
| 41 | ozyegin.edu.tr | 6.66/10 | 750 | 159 | Feb 2026 |
| 42 | bicyclecards.com | 6.52/10 | 438,700 | 19,905 | Nov 2022 |
| 43 | musashi.ac.jp | 6.52/10 | 190 | 32 | Mar 2025 |
| 44 | ibecbarcelona.eu | 6.50/10 | 180 | 287 | Nov 2021 |
| 45 | ac-martinique.fr | 6.45/10 | 160 | 178 | Jun 2021 |
| 46 | sei.co.jp | 6.45/10 | 2 | 17 | May 2023 |
| 47 | pasco.co.jp | 6.37/10 | 5 | 12 | Aug 2024 |
| 48 | asahi-u.ac.jp | 6.32/10 | - | 4 | Jun 2026 |
| 49 | trentofestival.it | 6.22/10 | 73 | 146 | May 2023 |
| 50 | yabloko.ru | 6.20/10 | - | - | Mar 2024 |
| 51 | lifezette.com | 6.09/10 | 47 | 258 | May 2021 |
| 52 | link-j.org | 6.05/10 | 38 | 93 | Sep 2026 |
| 53 | genealogybank.com | 6.04/10 | 128,500 | 30,233 | Aug 2022 |
| 54 | toyoeiwa.ac.jp | 5.99/10 | - | 6 | Feb 2023 |
| 55 | tohoku-mpu.ac.jp | 5.86/10 | 5 | 4 | Sep 2025 |
| 56 | kpu.ac.jp | 5.80/10 | 92 | 20 | Aug 2022 |
| 57 | arccorp.com | 5.77/10 | 41 | 46 | May 2021 |
| 58 | fpu.ac.jp | 5.68/10 | 45 | 17 | Oct 2022 |
| 59 | krunker.io | 5.63/10 | 31,300 | 3,078 | May 2021 |
| 60 | camp.com | 5.56/10 | 46,800 | 7,662 | Sep 2023 |
| 61 | normandie-univ.fr | 5.50/10 | - | 14 | Feb 2024 |
| 62 | kuins.ac.jp | 5.48/10 | 210 | 152 | Aug 2023 |
| 63 | vai.be | 5.47/10 | 21 | 121 | May 2025 |
| 64 | holcimfoundation.org | 5.45/10 | 960 | 699 | Jul 2025 |
| 65 | nidek.co.jp | 5.37/10 | - | 13 | Aug 2022 |
| 66 | wevox.io | 5.29/10 | 1 | 1 | Mar 2025 |
| 67 | preisvergleich.de | 5.28/10 | 15 | 19 | Aug 2022 |
| 68 | guaiba.com.br | 5.27/10 | 39 | 146 | Sep 2026 |
| 69 | alpha.co.jp | 5.16/10 | 1 | 10 | Apr 2024 |
| 70 | axxess.co.za | 4.75/10 | 860 | 365 | May 2021 |
| 71 | lebenshilfe-bremen.de | 4.75/10 | - | - | Apr 2026 |
| 72 | pieps.com | 4.74/10 | - | - | Oct 2023 |
| 73 | legalinfo.org | 4.73/10 | - | - | Apr 2021 |
| 74 | volleyball.bayern | 4.71/10 | - | - | May 2026 |
| 75 | seiko-denki.co.jp | 4.70/10 | - | - | Aug 2026 |
| 76 | laratranslate.com | 4.69/10 | - | - | Jan 2025 |
| 77 | belgraviacentre.com | 4.69/10 | 14,500 | 13,017 | Sep 2023 |
| 78 | qualisys.com | 4.69/10 | - | - | Apr 2021 |
| 79 | future-processing.pl | 4.69/10 | - | - | May 2021 |
| 80 | lalouviere.be | 4.69/10 | - | - | Aug 2022 |
| 81 | api.md | 4.69/10 | - | - | Oct 2025 |
| 82 | mackillop.org.au | 4.69/10 | - | - | May 2021 |
| 83 | cruzdelsur.com.pe | 4.69/10 | - | - | Sep 2026 |
| 84 | celsys.com | 4.54/10 | - | - | May 2025 |
| 85 | pronama.jp | 4.52/10 | - | - | Mar 2025 |
| 86 | eagnews.org | 4.49/10 | - | - | May 2021 |
| 87 | centerparcs.eu | 4.31/10 | - | - | Jun 2026 |
| 88 | q-cells.com | 4.19/10 | - | - | Nov 2024 |
| 89 | ihhhealthcare.com | 4.16/10 | - | - | Jun 2025 |
| 90 | uniserve.com | 4.11/10 | - | - | May 2021 |
| 91 | hansvoortman.nl | 4.10/10 | - | - | Jul 2023 |
| 92 | crocker.com | 4.07/10 | - | - | Aug 2022 |
| 93 | eminova.se | 4.03/10 | - | - | Oct 2025 |
| 94 | drirenaeris.com | 3.98/10 | - | - | Dec 2025 |
| 95 | heim-ag.ch | 3.90/10 | - | - | Aug 2024 |
| 96 | q-cells.eu | 3.80/10 | - | - | Nov 2024 |
| 97 | diakonie-traunstein.de | 3.79/10 | - | - | Oct 2025 |
| 98 | w12app.com.br | 3.77/10 | - | - | Aug 2024 |
| 99 | tsurumi.eu | 3.73/10 | - | - | May 2021 |
| 100 | neverfail.com.au | 3.71/10 | - | - | Jun 2022 |
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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