Koizumi Fumiya

Koizumi Fumiya

Solo Founder
#99878228 followers1 following
#14,728Last month
0 KP
>10,000All time
0 KP

About

Indie developer building Certly — SSL, domain & DNS monitoring for teams that don’t want surprises. Based in Japan.

Badges

Tastemaker
Tastemaker
Gone streaking
Gone streaking
Gone streaking 5
Gone streaking 5

Maker History

  • Certly
    CertlyKnow before your SSL, domain, or DNS breaks
    Jul 2026
    • 🎉
    Joined Product HuntJuly 4th, 2026

Forums

•

2mo ago

Certly - Know before your SSL, domain, or DNS breaks

Monitor SSL certificates, domain expiry, and DNS/DNSSEC across all your sites. Track every DNS record change and get alerted on Slack, email, or webhook before anything lapses — so you never find out from your customers.
View more