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dev.to

Every SSL/TLS certificate ever issued for this name, indexed from public CT logs.

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20 on page · 69 matched
total records
69
active · on this page
1
expired · on this page
19
unique issuers · on this page
3
issuers on this pageGoogle Trust9Let's Encrypt6Microsoft5
domainissuervalidstatus
link.dev.tocrt.sh
Google Trust
Google TrustApr 4, 2026→Jul 3, 2026expires in 1mo
media.dev.tocrt.sh
Let's Encrypt
Let's EncryptMar 31, 2025→Jun 29, 2025expired 10mo ago
shop.dev.tocrt.sh
Microsoft
MicrosoftMar 28, 2025→Jun 26, 2025expired 10mo ago
shop.dev.tocrt.sh
Microsoft
MicrosoftMar 28, 2025→Jun 26, 2025expired 10mo ago
media3.dev.tocrt.sh
Google Trust
Google TrustMar 27, 2025→Jun 25, 2025expired 10mo ago
assets.dev.tocrt.sh
Google Trust
Google TrustMar 3, 2025→Jun 1, 2025expired 11mo ago
media2.dev.tocrt.sh
Let's Encrypt
Let's EncryptMar 2, 2025→May 31, 2025expired 11mo ago
dev.tocrt.sh
Microsoft
MicrosoftFeb 25, 2025→May 26, 2025expired 11mo ago
*.dev.tocrt.sh
Microsoft
MicrosoftFeb 25, 2025→May 26, 2025expired 11mo ago
dev.tocrt.sh
Let's Encrypt
Let's EncryptFeb 25, 2025→May 26, 2025expired 11mo ago
*.dev.tocrt.sh
Let's Encrypt
Let's EncryptFeb 25, 2025→May 26, 2025expired 11mo ago
link.dev.tocrt.sh
Google Trust
Google TrustFeb 24, 2025→May 25, 2025expired 11mo ago
storybook.dev.tocrt.sh
Google Trust
Google TrustFeb 19, 2025→May 20, 2025expired 11mo ago
2020.dev.tocrt.sh
Google Trust
Google TrustFeb 18, 2025→May 19, 2025expired 11mo ago
docs.dev.tocrt.sh
Google Trust
Google TrustFeb 17, 2025→May 18, 2025expired 11mo ago
docs.dev.tocrt.sh
Google Trust
Google TrustFeb 17, 2025→May 18, 2025expired 11mo ago
*.dev.tocrt.sh
Let's Encrypt
Let's EncryptFeb 16, 2025→May 17, 2025expired 11mo ago
*.dev.tocrt.sh
Let's Encrypt
Let's EncryptFeb 16, 2025→May 17, 2025expired 11mo ago
status.dev.tocrt.sh
Google Trust
Google TrustFeb 13, 2025→May 14, 2025expired 11mo ago
shop.dev.tocrt.sh
Microsoft
MicrosoftJan 28, 2025→Apr 28, 2025expired 1y ago
showing 1–20 · 1/4
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Pipe results into your recon pipeline
# Python
$ pip install ct-radar
$ ct-radar dev.to | httpx -silent
# Go
$ go install github.com/imfht/ct-radar-cli/cli@latest
$ ct-radar dev.to | nuclei
Free tier: 100 searches/day · Pro $29/mo for 10,000/day

About certificate history for dev.to

This page lists every X.509 (SSL/TLS) certificate ever issued for dev.to and its subdomains, as recorded in public Certificate Transparency (CT) logs. CT logs are an immutable, append-only record of every certificate issued by participating Certificate Authorities (CAs), as required by the major browsers since 2018.

Subdomain enumeration via CT logs is one of the highest-signal techniques in reconnaissance — every time a TLS certificate is issued, all Subject Alternative Names (SANs) on that certificate become public. Internal and forgotten subdomains regularly show up here days after they're set up.

To monitor dev.to for newly-issued certificates in real-time (useful for detecting unauthorized issuance, phishing variants, or shadow IT) add it to your watchlist (Pro plan).