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THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.3

mail.cybernetpe.com.br · 45.172.39.10:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
CN=mail.cybernetpe.com.br
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-09-14T09:14:52+00:00
Expires
2026-12-13T09:14:51+00:00
Days remaining
43
Serial (hex)
05B030EB43356FE92164366172ECC9F7F934
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:mail.cybernetpe.com.br

SHA-256 fingerprint

C8:60:98:0A:A5:F6:AC:FE:3D:21:6E:DE:D4:91:21:61:A2:71:12:96:15:01:31:3E:99:9C:F5:FF:B7:10:E4:89
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
AA:38:A6:6A:20:CC:CC:BA:3D:4B:E9:4E:52:1C:5F:AB:9B:80:17:E5
authorityKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityInfoAccess
CA Issuers - URI:http://yr2.i.lencr.org/
subjectAltName
DNS:mail.cybernetpe.com.br
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/53.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Sep 14 10:13:22.277 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:84:93:CF:43:E0:76:68:9B:0D:E1:4E: 85:8F:82:7C:4B:C1:73:B5:9C:66:FA:CC:93:EB:43:0E: 49:CF:BD:47:F6:02:21:00:89:70:F0:D7:5D:FC:C7:08: 4A:4B:D0:42:13:ED:6E:80:17:3D:C3:46:07:2F:38:EB: FC:1F:0C:82:ED:14:23:D2 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:AF:86:3D:3B:3E:E5:9F:A5:77:DE:A8:24:5D:36:B0: D9:ED:22:A2:23:F4:61:77:41:22:94:52:EE:95:50:5F Timestamp : Sep 14 10:13:22.352 2026 GMT Extensions: 00:00:05:00:2D:EB:5F:61 Signature : ecdsa-with-SHA256 30:44:02:20:32:02:3D:72:94:4F:38:7E:FC:C5:26:51: 30:72:25:00:2B:01:B1:53:02:8E:B6:11:D5:D8:4F:37: E9:4D:A4:9A:02:20:67:FA:83:AE:C3:A6:E4:E9:4C:F8: F6:F1:55:C9:8B:87:E5:00:35:D8:38:6F:F9:30:7E:D9: 58:BE:D0:D8:34:8B
-----BEGIN CERTIFICATE-----
MIIGBjCCBO6gAwIBAgISBbAw60M1b+khZDZhcuzJ9/k0MA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNZUjIwHhcNMjYwOTE0MDkxNDUyWhcNMjYxMjEzMDkxNDUxWjAhMR8wHQYDVQQD
ExZtYWlsLmN5YmVybmV0cGUuY29tLmJyMIICIjANBgkqhkiG9w0BAQEFAAOCAg8A
MIICCgKCAgEA5RWrgGyQmvlzhRfZJrC5OhKDGMKShKWBwpfZFruwmmHpJIYydhZy
saXjwQt5VSjC7x3TQyOTchaslu6BloLhLyApzC0aLwjFPX8o/i6ecFyN7tmyicDM
/BO7Dw4ru+ZyKO+TwLCYPy+G+tplgULn1pU7vytpYJzVqdM1ZOPCP2qM6S8XvkLD
MtxZHFf/r50W2TwMKNPhUxtzMy8zht+agXf3kDwAodN9OfN4u5nJjCj4gsYlMjMl
hFDt/7ZPyI4qaoTfvLmpLTPifDrR7XNE5WmIQs7nVoQRgQBlhDOvIbmztOpktGAS
FSV3XYsRSh8zFHJhKF2yIpuLNSXE5Igstgxiyk7zSMCalIo4oW0ToGtYYGeMYk7W
9X0tQ7ej2Au8LTUCYxUhedDnkE9EiyUsf2+nslZpuDePSSW3n9/qd3kUYskTE67+
I3l9/eevDB1NPUTYlZX7S5DoGOJgzVf+Wv1OBfIEDn+PG8ZvydW9b+0pudWcoUm7
VxuiFEJwyOfCS6TPx24vYqp8e4Eva4tIAtfdyOfhNulGkzpKadOIYHf1De+ejfsJ
+HY3uPOfQ/E7mIGRjUi7qUvCg+nhhn7Plh7WSmk3kcFlmPwFquSIl+cz+MvCV6Ac
ztmcFs+KOnPZnBkzb1WmD7lZMgJCBCzVRH5lfM2INC24aEB2S8iS8A0CAwEAAaOC
AiQwggIgMA4GA1UdDwEB/wQEAwIFoDATBgNVHSUEDDAKBggrBgEFBQcDATAMBgNV
HRMBAf8EAjAAMB0GA1UdDgQWBBSqOKZqIMzMuj1L6U5SHF+rm4AX5TAfBgNVHSME
GDAWgBRAFS0mee0yIJ7fmnId1jIfgQyBDDAzBggrBgEFBQcBAQQnMCUwIwYIKwYB
BQUHMAKGF2h0dHA6Ly95cjIuaS5sZW5jci5vcmcvMCEGA1UdEQQaMBiCFm1haWwu
Y3liZXJuZXRwZS5jb20uYnIwEwYDVR0gBAwwCjAIBgZngQwBAgEwLgYDVR0fBCcw
JTAjoCGgH4YdaHR0cDovL3lyMi5jLmxlbmNyLm9yZy81My5jcmwwggEMBgorBgEE
AdZ5AgQCBIH9BIH6APgAdwDCMX5XRRmjRe5/ON6ykEHrx8IhWiK/f9W1rXaa2Q5S
zQAAAaCfaDblAAAEAwBIMEYCIQCEk89D4HZomw3hToWPgnxLwXO1nGb6zJPrQw5J
z71H9gIhAIlw8Ndd/McISkvQQhPtboAXPcNGBy846/wfDILtFCPSAH0ARq+GPTs+
5Z+ld96oJF02sNntIqIj9GF3QSKUUu6VUF8AAAGgn2g3MAAIAAAFAC3rX2EEAwBG
MEQCIDICPXKUTzh+/MUmUTByJQArAbFTAo62EdXYTzfpTaSaAiBn+oOuw6bk6Uz4
9vFVyYuH5QA12Dhv+TB+2Vi+0Ng0izANBgkqhkiG9w0BAQsFAAOCAQEAPXUmFiK6
mfbJ2DN7ZWhnLPUHUsjLS4SbAwyrKBBPX54GHPRlxpSPX3ecDjNZtWBrjq9k6Tup
pfeiE/TZ9BqrXUvXgLN3gQPr3tTY/X7Sf2aXG4oYTzzYHApqdQZwqXyBgMb2uxLw
Z98EMQvGy2BcrJFvNHXpRH691IlaIsLaRs/SHlCDTyc0Dxg2KP92gohpPqgzsRK7
NXRqKittrXosfD192oUtGiCWyLWQeSChwhywdYIdzp4ludT3J94TOvXJMBQlNJmA
+YgEdNJrANU1SXw15ZDTQRj1/Nb32GcdHPJ9zSt5mQw1hVdvizOQb+cOvTVdb7ct
JDBS49kfc94/Gg==
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-31T07:20:15+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR2
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
672
Serial (hex)
4EBD24947E24D394802D84A52FD5B319
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

23:8B:85:A0:09:9C:65:B9:70:47:7D:57:24:F1:A1:D4:75:CE:50:58:CF:FE:4E:FA:87:33:89:9B:DB:86:3C:47
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2133
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

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