DNS
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

tisolucoes.com · 170.80.157.10:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed
The certificate has expired.

Certificate verification failed

Subject
CN=zaznatal.com.br
Issuer
C=US O=Let's Encrypt CN=E6
Valid from
2025-06-12T10:06:16+00:00
Expires
2025-09-10T10:06:15+00:00
Days remaining
-411
Serial (hex)
0685C731B92C9E0BA6CE9FBA048AB3E7F937
Signature
ecdsa-with-SHA384
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:zaznatal.com.br

SHA-256 fingerprint

7C:B5:33:65:5F:4A:42:36:23:FA:50:3B:CE:C5:B3:EB:7E:CD:DB:CE:62:2E:5D:27:29:2F:5C:AA:8D:80:35:B0
Certificate extensions & PEM
keyUsage
Digital Signature
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
F4:65:0C:2C:7E:56:DB:3B:AC:85:56:EA:33:34:A9:40:DD:B3:C9:5F
authorityKeyIdentifier
93:27:46:98:03:A9:51:68:8E:98:D6:C4:42:48:DB:23:BF:58:94:D2
authorityInfoAccess
CA Issuers - URI:http://e6.i.lencr.org/
subjectAltName
DNS:zaznatal.com.br
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://e6.c.lencr.org/56.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : CC:FB:0F:6A:85:71:09:65:FE:95:9B:53:CE:E9:B2:7C: 22:E9:85:5C:0D:97:8D:B6:A9:7E:54:C0:FE:4C:0D:B0 Timestamp : Jun 12 11:04:46.749 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:0A:5E:1F:1A:EC:EF:44:CC:DD:9F:B8:22: 56:8C:55:FD:0F:07:F0:EA:68:80:68:FF:60:ED:D7:34: 74:20:BD:09:02:21:00:B1:8B:DF:6F:AA:A0:DC:2F:8D: BC:19:8B:86:55:F3:2B:A3:0B:F4:41:05:86:74:4D:5A: 97:E5:E2:37:6F:51:01 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A4:42:C5:06:49:60:61:54:8F:0F:D4:EA:9C:FB:7A:2D: 26:45:4D:87:A9:7F:2F:DF:45:59:F6:27:4F:3A:84:54 Timestamp : Jun 12 11:04:46.736 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:00:98:7C:B8:EC:FD:4F:BD:92:39:FF:07: 79:45:EB:53:23:D9:12:66:5E:13:CD:0A:58:44:D6:0D: D0:18:5B:43:02:20:39:11:92:3F:95:43:D4:8D:C8:E6: 69:9C:84:F8:3D:AD:96:BE:46:57:FE:BF:1F:62:A7:9F: 3A:5B:CF:F4:80:A2
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-25T21:18:08+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=E6
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2024-03-13T00:00:00+00:00
Expires
2027-03-12T23:59:59+00:00
Days remaining
138
Serial (hex)
B0573E9173972770DBB487CB3A452B38
Signature
RSA-SHA256
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

76:E9:E2:88:AA:FC:0E:37:F4:39:0C:BF:94:6A:AD:99:7D:5C:1C:90:1B:3C:E5:13:D3:D8:FA:DB:AB:E2:AB:85
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
93:27:46:98:03:A9:51:68:8E:98:D6:C4:42:48:DB:23:BF:58:94:D2
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-----
MIIEVzCCAj+gAwIBAgIRALBXPpFzlydw27SHyzpFKzgwDQYJKoZIhvcNAQELBQAw
TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh
cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMjQwMzEzMDAwMDAw
WhcNMjcwMzEyMjM1OTU5WjAyMQswCQYDVQQGEwJVUzEWMBQGA1UEChMNTGV0J3Mg
RW5jcnlwdDELMAkGA1UEAxMCRTYwdjAQBgcqhkjOPQIBBgUrgQQAIgNiAATZ8Z5G
h/ghcWCoJuuj+rnq2h25EqfUJtlRFLFhfHWWvyILOR/VvtEKRqotPEoJhC6+QJVV
6RlAN2Z17TJOdwRJ+HB7wxjnzvdxEP6sdNgA1O1tHHMWMxCcOrLqbGL0vbijgfgw
gfUwDgYDVR0PAQH/BAQDAgGGMB0GA1UdJQQWMBQGCCsGAQUFBwMCBggrBgEFBQcD
ATASBgNVHRMBAf8ECDAGAQH/AgEAMB0GA1UdDgQWBBSTJ0aYA6lRaI6Y1sRCSNsj
v1iU0jAfBgNVHSMEGDAWgBR5tFnme7bl5AFzgAiIyBpY9umbbjAyBggrBgEFBQcB
AQQmMCQwIgYIKwYBBQUHMAKGFmh0dHA6Ly94MS5pLmxlbmNyLm9yZy8wEwYDVR0g
BAwwCjAIBgZngQwBAgEwJwYDVR0fBCAwHjAcoBqgGIYWaHR0cDovL3gxLmMubGVu
Y3Iub3JnLzANBgkqhkiG9w0BAQsFAAOCAgEAfYt7SiA1sgWGCIpunk46r4AExIRc
MxkKgUhNlrrv1B21hOaXN/5miE+LOTbrcmU/M9yvC6MVY730GNFoL8IhJ8j8vrOL
pMY22OP6baS1k9YMrtDTlwJHoGby04ThTUeBDksS9RiuHvicZqBedQdIF65pZuhp
eDcGBcLiYasQr/EO5gxxtLyTmgsHSOVSBcFOn9lgv7LECPq9i7mfH3mpxgrRKSxH
pOoZ0KXMcB+hHuvlklHntvcI0mMMQ0mhYj6qtMFStkF1RpCG3IPdIwpVCQqu8GV7
s8ubknRzs+3C/Bm19RFOoiPpDkwvyNfvmQ14XkyqqKK5oZ8zhD32kFRQkxa8uZSu
h4aTImFxknu39waBxIRXE4jKxlAmQc4QjFZoq1KmQqQg0J/1JF8RlFvJas1VcjLv
YlvUB2t6npO6oQjB3l+PNf0DpQH7iUx3Wz5AjQCi6L25FjyE06q6BZ/QlmtYdl/8
ZYao4SRqPEs/6cAiF+Qf5zg2UkaWtDphl1LKMuTNLotvsX99HP69V2faNyegodQ0
LyTApr/vT01YPE46vNsDLgK+4cL6TrzC/a4WcmF5SRJ938zrv/duJHLXQIku5v0+
EwOy59Hdm0PT/Er/84dDV0CSjdR/2XuZM3kpysSKLgD1cKiDA+IRguODCxfO9cyY
Ig46v9mFmBvyH04=
-----END CERTIFICATE-----

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

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