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Cert Spotter on new websites

Certificate transparency log monitoring service and API from SSLMate.

Sites using Cert Spotter
10
since Jul 2026
Last 30 days
0.0%
of new sites, to Oct 19
no change on the 30 days before
Last 7 days
0.0%
of new sites, 7-day average
no change on the week before
Rank in Security
#99
of 400 tools, all time
First seen Jul 27, 2026
Last seen Sep 18, 2026
Website sslmate.com

What we found

  1. Cert Spotter did not appear on any new site in the last 30 days.[1]

Share of new sites using Cert Spotter

0.0000% 0.0001% 0.0002% 0.0003% 0.0004% 11 Sep Oct

The line is the 7-day average share of new sites that use Cert Spotter, since 11 September. It starts at our first detection.

Who uses Cert Spotter

Domain ending 10 sites
EndingSitesShareBar
.studio 6 60.0%
.io 2 20.0%
.app 1 10.0%
.com 1 10.0%

Security on new sites

# Movement Tool Share of all sites Share of category Bar
1 – HSTS 47.4% 87.4%
2 – Cloudflare Bot Management 13.7% 25.2%
3 – Google reCAPTCHA 1.9% 3.5%
4 ▲1 Anubis 0.1% 0.2%
5 ▼2 DDoS-Guard 0.1% 0.2%
…
99 ▲27 Cert Spotter <0.1% <0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Security tool. Among September launches it ranked #71 in Security, up from #98 in August. All 400 in Security

Recently launched products built on Cert Spotter

9 of the 10 sites using Cert Spotter are product launches we list individually. The other 1 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.

Site Found Also detected
Belgio | Ücretsiz Belge Dönüştürücü, Link-in-Bio & QR Menü Stüdyosu belgio.app Sep 18 cdnjs crt.sh Fastly Firebase
HSTS and preload checker hsts.studio · Developer Tools Sep 2 Astro Cloudflare Google Search Console
Global DNS propagation checker propagation.studio · Developer Tools Sep 2 Astro Cloudflare
MTA-STS and TLS-RPT checker mtasts.studio · Developer Tools Sep 1 Astro Cloudflare Google Search Console
SMTP STARTTLS tester starttls.studio · Developer Tools Sep 1 Astro Cloudflare Google Search Console
CNAME chain resolver cname.studio Sep 1 Astro Cloudflare Google Search Console
Toukir's Email Toolbox toukirahmed.com · Marketing · Bangladesh Sep 1 Cloudflare Google Calendar Google Fonts Google Workspace
Browser-based OSINT tools, verifiable case log | stratdata stratdata.io · Developer Tools Aug 4 Algolia DuckDuckGo GLEIF Google Search Console
HTTP redirect checker redirects.studio · Developer Tools Jul 27 Astro Cloudflare Google Search Console

Watches, exports and the API give you all 10 sites using Cert Spotter, from £15 a month.

Notes

  1. These figures cover websites that went live since April 2026, not the web as a whole.

How this page is made

FirstSited looks at each new website near the day it goes live and records what it was built with. We do not go back later, so these figures describe what sites launch with, not what they run today. A site counts towards Cert Spotter when we detect Cert Spotter on it at that look.

Every share on this page is a proportion of the new sites we were tracking at the time. Sites we found across the wider web count towards the figures, but only product launches are listed by name. How we detect technologies · How we find new sites

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.