Found 6 matching certificates in 3 groups.
Certificate result group 1
SAN set www.linknacional.com.br admin.linknacional.com.br autodiscover.linknacional.com.br cpanel.linknacional.com.br cpcalendars.linknacional.com.br cpcontacts.linknacional.com.br doar.linknacional.com.br linknacional.com.br mail.linknacional.com.br marketing.linknacional.com.br servidor.linknacional.com.br stage.linknacional.com.br webdisk.linknacional.com.br webmail.linknacional.com.br +12
Coverage ends (UTC) 2026-09-18 13:54 25d
Certificates in this group
Details
Issuer organization
Serial
Logged at (UTC)
Valid until (UTC)
, sorted ascending
Let's Encrypt
058aad44cd19e6b8171af500e20fcb528636
2026-06-20 14:53
2026-09-18 13:54 25d
DNS SANs admin.linknacional.com.br autodiscover.linknacional.com.br cpanel.linknacional.com.br cpcalendars.linknacional.com.br cpcontacts.linknacional.com.br doar.linknacional.com.br linknacional.com.br mail.linknacional.com.br marketing.linknacional.com.br servidor.linknacional.com.br stage.linknacional.com.br webdisk.linknacional.com.br webmail.linknacional.com.br www.linknacional.com.br
IP SANs None
Subject DN CN=admin.linknacional.com.br
Issuer DN CN=YE1, O=Let's Encrypt, C=US Serial 058aad44cd19e6b8171af500e20fcb528636 (crt.sh )
Validity (UTC) 2026-06-20 13:54 to 2026-09-18 13:54
Key algorithm EC public key (P-256)
Signature algorithm ECDSA with SHA-384
Subject SPKI SHA-256 ac8ee32b85411b957cc7f7b99f12926d4314447f0f2f1aeb34fff807ab5a73c4
Issuer SPKI SHA-256 6ebcefb4210b088654a38b03fea3d7d1c711b4fb1ddc363a45f9b1a4e53da01e
TBS-no-CT SHA-256 4170ab5b2e1436b42c1087c455470dfc479da3726ac01b54cfbae9376596f9ca
1 certificate hidden.
Certificate result group 2
SAN set www.linknacional.com.br autoconfig.linknacional.com.br autodiscover.linknacional.com.br cpanel.linknacional.com.br cpcalendars.linknacional.com.br cpcontacts.linknacional.com.br linknacional.com.br mail.linknacional.com.br webdisk.linknacional.com.br webmail.linknacional.com.br +8
Coverage ends (UTC) 2026-09-30 04:00 37d
Certificates in this group
Details
Issuer organization
Serial
Logged at (UTC)
Valid until (UTC)
, sorted ascending
Let's Encrypt
05b458d503aa1751a15bcbbe18869e654d86
2026-07-02 04:59
2026-09-30 04:00 37d
DNS SANs autoconfig.linknacional.com.br autodiscover.linknacional.com.br cpanel.linknacional.com.br cpcalendars.linknacional.com.br cpcontacts.linknacional.com.br linknacional.com.br mail.linknacional.com.br webdisk.linknacional.com.br webmail.linknacional.com.br www.linknacional.com.br
IP SANs None
Subject DN CN=cpcontacts.linknacional.com.br
Issuer DN CN=YE1, O=Let's Encrypt, C=US Serial 05b458d503aa1751a15bcbbe18869e654d86 (crt.sh )
Validity (UTC) 2026-07-02 04:00 to 2026-09-30 04:00
Key algorithm EC public key (P-256)
Signature algorithm ECDSA with SHA-384
Subject SPKI SHA-256 360b1c39d65e22cc9604d25e0aad14f8c02a2ef88f6e6bdce1336562b305b065
Issuer SPKI SHA-256 6ebcefb4210b088654a38b03fea3d7d1c711b4fb1ddc363a45f9b1a4e53da01e
TBS-no-CT SHA-256 2f5f086414f4240beef265bbe93fa28cb9da2a4120b948a08ccb74bc7f156c29
1 certificate hidden.
Certificate result group 3
SAN set *.linknacional.com.br linknacional.com.br
Coverage ends (UTC) 2026-11-22 00:22 89d
Certificates in this group
Details
Issuer organization
Serial
Logged at (UTC)
Valid until (UTC)
, sorted ascending
Google Trust Services
00b8e15cdbdf7a74010ecf36027d80035e
2026-06-25 23:28
2026-09-23 23:26 30d
DNS SANs linknacional.com.br *.linknacional.com.br
IP SANs None
Subject DN CN=linknacional.com.br
Issuer DN CN=WE1, O=Google Trust Services, C=US Serial 00b8e15cdbdf7a74010ecf36027d80035e (crt.sh )
Validity (UTC) 2026-06-25 22:28 to 2026-09-23 23:26
Key algorithm EC public key (P-256)
Signature algorithm ECDSA with SHA-256
Subject SPKI SHA-256 37a42158b55b856ca973c61f12ff407b15759ad1eb2d8225963b6a9b1b101128
Issuer SPKI SHA-256 908769e8d34477cc2cba0632c88605b22d7294c0840f78596d247c645b1afc0e
TBS-no-CT SHA-256 fb288079bb8be42c4bf70eb6a5996b3a80c360fad69b794701c574947ecd8388
SSL Corporation
19298bec2100e611ca210451439f69e7
2026-06-25 23:29
2026-09-23 23:26 30d
DNS SANs linknacional.com.br *.linknacional.com.br
IP SANs None
Subject DN CN=linknacional.com.br
Issuer DN CN=Cloudflare TLS Issuing ECC CA 4, O=SSL Corporation, C=US Serial 19298bec2100e611ca210451439f69e7 (crt.sh )
Validity (UTC) 2026-06-25 23:19 to 2026-09-23 23:26
Key algorithm EC public key (P-256)
Signature algorithm ECDSA with SHA-256
Subject SPKI SHA-256 7615e11ef00e183cc476843731b35ef293784cb55dcf6d9d91cdd4d2fec10934
Issuer SPKI SHA-256 1959e38fb7d3fc16bee5e20e834e2c6667bf0e9e6b9806b86bd40a6d66c716d0
TBS-no-CT SHA-256 8192bda20fd78fa69e0f7fd03456e147b3fba0f3a7fe2665c0b24ee41eb70ac5
Google Trust Services
11b34b791a90984313dc0b9751edcb7c
2026-08-24 00:00
2026-11-21 23:59 89d
DNS SANs linknacional.com.br *.linknacional.com.br
IP SANs None
Subject DN CN=linknacional.com.br
Issuer DN CN=WE1, O=Google Trust Services, C=US Serial 11b34b791a90984313dc0b9751edcb7c (crt.sh )
Validity (UTC) 2026-08-23 23:00 to 2026-11-21 23:59
Key algorithm EC public key (P-256)
Signature algorithm ECDSA with SHA-256
Subject SPKI SHA-256 f271bb80035ecd6ce15285547f8e828c377c4b904805e5a7abbbbb78291fa2b0
Issuer SPKI SHA-256 908769e8d34477cc2cba0632c88605b22d7294c0840f78596d247c645b1afc0e
TBS-no-CT SHA-256 ddb6727fb78a53b256c0e6f74d7d3d408f874f6bec4a7e94ecf97b89374568a1
Google Trust Services
450f409e3113362213fcfa95f96a6888
2026-08-24 00:22
2026-11-22 00:22 89d
DNS SANs linknacional.com.br *.linknacional.com.br
IP SANs None
Subject DN CN=linknacional.com.br
Issuer DN CN=WE1, O=Google Trust Services, C=US Serial 450f409e3113362213fcfa95f96a6888 (crt.sh )
Validity (UTC) 2026-08-23 23:22 to 2026-11-22 00:22
Key algorithm EC public key (P-256)
Signature algorithm ECDSA with SHA-256
Subject SPKI SHA-256 25a012561e9019e6b8fabab11fcadbcf70036f6e453eb045042036bcac30e4fd
Issuer SPKI SHA-256 908769e8d34477cc2cba0632c88605b22d7294c0840f78596d247c645b1afc0e
TBS-no-CT SHA-256 3e4aa97e8a872e2179ca886c6b4d0da99df8d562f81e965823adfd2fc4dc4aac
4 certificates hidden.
Search scope options
DNS SAN (exact)
Matches only an identical DNS SAN value, including literal wildcards.
Search *.example.com
Matches *.example.com
Does not match www.example.com*.example.com.au
DNS host coverage
Matches certificates that directly cover the host, including a wildcard for the parent
domain.
Search www.example.com
Matches www.example.com*.example.com
Does not match sub.www.example.combadwww.example.comwww.example.com.au
DNS host and subdomains
Matches direct host coverage plus certificates issued for names below the host.
Search www.example.com
Matches www.example.com*.example.comsub.www.example.comdeeper.sub.www.example.com
Does not match badwww.example.comwww.example.com.au
What is Certificate Transparency?
Certificate Transparency is a public logging system for publicly trusted TLS certificates.
It makes certificate issuance visible, so domain owners, security researchers,
and others can monitor which certificates have been issued by publicly trusted certificate authorities.
Related: we used Certificate Transparency data to
analyze when TLS certificates are renewed and how often renewal happens after expiration .
When do new certificates appear?
Publicly trusted TLS server certificates are normally available in search within 10 minutes of being issued.
Are both pre-certificates and final certificates shown?
Certificate Transparency logs may contain a pre-certificate, the final certificate, or both for the same issued certificate.
Search results show one result per real certificate.
When both a pre-certificate and its corresponding final certificate are found, they are deduplicated into a single result.
Deduplication uses the combination of TBS-no-CT SHA-256 and
Issuer SPKI SHA-256.
TBS-no-CT SHA-256 identifies the certificate’s to-be-signed data after Certificate Transparency-specific fields have been
removed, allowing the pre-certificate and final certificate to match for deduplication.
What is CertObserver?
CertObserver is a certificate monitoring platform that helps teams track TLS certificates, Certificate Transparency activity,
and renewal risk across the domains they operate.
