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opensea.io

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

csv export pro
Filters
20 on page · 141 matched
total records
141
active · on this page
19
expired · on this page
1
unique issuers · on this page
2
issuers on this pageGoogle Trust15Let's Encrypt5
domainissuervalidstatus
learn.opensea.iocrt.sh
Google Trust
Google TrustApr 12, 2026→Jul 11, 2026expires in 2mo
learn.opensea.iocrt.sh
Google Trust
Google TrustApr 12, 2026→Jul 11, 2026expires in 2mo
learn.opensea.iocrt.sh
Google Trust
Google TrustApr 12, 2026→Jul 11, 2026expires in 2mo
learn.opensea.iocrt.sh
Google Trust
Google TrustApr 12, 2026→Jul 11, 2026expires in 2mo
privy.wallets.opensea.iocrt.sh
Google Trust
Google TrustApr 11, 2026→Jul 10, 2026expires in 2mo
status.opensea.iocrt.sh
Let's Encrypt
Let's EncryptApr 11, 2026→Jul 10, 2026expires in 2mo
status.opensea.iocrt.sh
Let's Encrypt
Let's EncryptApr 11, 2026→Jul 10, 2026expires in 2mo
mobile-beta.opensea.iocrt.sh
Let's Encrypt
Let's EncryptApr 10, 2026→Jul 9, 2026expires in 2mo
opensea.iocrt.sh
Let's Encrypt
Let's EncryptApr 8, 2026→Jul 7, 2026expires in 2mo
opensea.iocrt.sh
Google Trust
Google TrustApr 6, 2026→Jul 5, 2026expires in 1mo
mcp.opensea.iocrt.sh
Google Trust
Google TrustApr 6, 2026→Jul 5, 2026expires in 1mo
opensea.iocrt.sh
Google Trust
Google TrustApr 6, 2026→Jul 5, 2026expires in 1mo
mcp-beta.opensea.iocrt.sh
Google Trust
Google TrustApr 6, 2026→Jul 5, 2026expires in 1mo
opensea.iocrt.sh
Google Trust
Google TrustApr 6, 2026→Jul 5, 2026expires in 1mo
mcp.opensea.iocrt.sh
Google Trust
Google TrustApr 6, 2026→Jul 5, 2026expires in 1mo
opensea.iocrt.sh
Google Trust
Google TrustApr 6, 2026→Jul 5, 2026expires in 1mo
mcp.opensea.iocrt.sh
Google Trust
Google TrustApr 6, 2026→Jul 5, 2026expires in 1mo
opensea.iocrt.sh
Google Trust
Google TrustApr 5, 2026→Jul 4, 2026expires in 1mo
mcp.opensea.iocrt.sh
Google Trust
Google TrustApr 5, 2026→Jul 4, 2026expires in 1mo
docs.opensea.iocrt.sh
Let's Encrypt
Let's EncryptMar 31, 2025→Jun 29, 2025expired 10mo ago
showing 1–20 · 1/8
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Pipe results into your recon pipeline
# Python
$ pip install ct-radar
$ ct-radar opensea.io | httpx -silent
# Go
$ go install github.com/imfht/ct-radar-cli/cli@latest
$ ct-radar opensea.io | nuclei
Free tier: 100 searches/day · Pro $29/mo for 10,000/day

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About certificate history for opensea.io

This page lists every X.509 (SSL/TLS) certificate ever issued for opensea.io 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 opensea.io for newly-issued certificates in real-time (useful for detecting unauthorized issuance, phishing variants, or shadow IT) add it to your watchlist (Pro plan).