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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 · 129 matched
total records
129
active · on this page
0
expired · on this page
20
unique issuers · on this page
3
issuers on this pageGoogle Trust11Let's Encrypt5ZeroSSL4
domainissuervalidstatus
status.opensea.iocrt.sh
Google Trust
Google TrustFeb 16, 2025→May 17, 2025expired 11mo ago
status.opensea.iocrt.sh
Google Trust
Google TrustFeb 16, 2025→May 17, 2025expired 11mo ago
dev-storage.opensea.iocrt.sh
ZeroSSL
ZeroSSLFeb 13, 2025→May 14, 2025expired 11mo ago
docs.opensea.iocrt.sh
Let's Encrypt
Let's EncryptJan 31, 2025→May 1, 2025expired 1y ago
docs.opensea.iocrt.sh
Google Trust
Google TrustJan 31, 2025→May 1, 2025expired 1y ago
pro.opensea.iocrt.sh
Google Trust
Google TrustJan 28, 2025→Apr 28, 2025expired 1y ago
learn.opensea.iocrt.sh
Google Trust
Google TrustJan 27, 2025→Apr 27, 2025expired 1y ago
learn.opensea.iocrt.sh
Google Trust
Google TrustJan 27, 2025→Apr 27, 2025expired 1y ago
learn.opensea.iocrt.sh
Let's Encrypt
Let's EncryptJan 27, 2025→Apr 27, 2025expired 1y ago
opensea.iocrt.sh
Let's Encrypt
Let's EncryptJan 24, 2025→Apr 24, 2025expired 1y ago
*.opensea.iocrt.sh
Let's Encrypt
Let's EncryptJan 24, 2025→Apr 24, 2025expired 1y ago
*.testnets.opensea.iocrt.sh
Let's Encrypt
Let's EncryptJan 24, 2025→Apr 24, 2025expired 1y ago
opensea.iocrt.sh
Google Trust
Google TrustJan 24, 2025→Apr 24, 2025expired 1y ago
*.opensea.iocrt.sh
Google Trust
Google TrustJan 24, 2025→Apr 24, 2025expired 1y ago
*.testnets.opensea.iocrt.sh
Google Trust
Google TrustJan 24, 2025→Apr 24, 2025expired 1y ago
partners.opensea.iocrt.sh
Google Trust
Google TrustJan 19, 2025→Apr 19, 2025expired 1y ago
partners.opensea.iocrt.sh
ZeroSSL
ZeroSSLJan 19, 2025→Apr 19, 2025expired 1y ago
community-standards.opensea.iocrt.sh
ZeroSSL
ZeroSSLJan 16, 2025→Apr 16, 2025expired 1y ago
community-standards.opensea.iocrt.sh
ZeroSSL
ZeroSSLJan 16, 2025→Apr 16, 2025expired 1y ago
*.pro.opensea.iocrt.sh
Google Trust
Google TrustJan 14, 2025→Apr 14, 2025expired 1y ago
showing 41–60 · 3/7
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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).