SSL Checker
Submit the Hostname and Port in the fields below. This checker supports SNI and STARTTLS.
Report
It's all good. We have not detected any issues.
Hostname: | done Matches Common Name or/and SAN |
Expired: | done No (68 days till expiration) |
Public Key: | done We were unable to find any issues in the public key of end-entity certificate |
Trusted: | done Yes, we were able to verify the certificate |
Self-Signed: | done No, the end-entity certificate is not self-signed |
Chain Issues: | done No, we were unable to detect any issues in the certificate chain sent by the server |
Weak signatures: | done No, certificates sent by the server were not signed utilizing a weak hash function |
OCSP Status: | done OCSP Responder returned "good" status for the end-entity certificate |
DNS Information
Resolves To: | 86.124.145.184 |
Reverse IP lookup: | smtp.costan.ro. |
Nameserver: | ns.costan.ro. |
General Information
Common Name: | *.costan.ro |
SANs: | DNS:*.costan.ro Total number of SANs: 1 |
Signature Algorithm: | ecdsa-with-SHA384 |
Key Type: | ECDSA (secp256r1) |
Key size: | 256 bits |
Serial Number: | 4b6ad0728c341b3e6ccf7c55a2e84a8070b |
Not Before: | Oct 08, 2024 17:02:38 GMT |
Not After: | Jan 06, 2025 17:02:37 GMT |
Number of certs: | 2 |
Revocation Status: | good |
OCSP Stapling: | Not Supported |
Chain Information
Certificate # 1 - Common Name: *.costan.ro
Decode this certificate for verbose information → launchSubject Common Name | *.costan.ro |
Issuer Common Name | E6 |
Issuer Organization | Let's Encrypt |
Not Before: | Oct 08, 2024 17:02:38 GMT |
Not After: | Jan 06, 2025 17:02:37 GMT |
Signature Algorithm: | ecdsa-with-SHA384 |
Serial Number: | 4b6ad0728c341b3e6ccf7c55a2e84a8070b |
SHA1 Fingerprint: | B7:A5:5E:D4:3E:03:99:59:14:B0:8B:9A:F7:8E:D6:03:70:B0:C0:97 |
MD5 Fingerprint: | 10:4D:83:A4:48:D8:C4:FC:52:D2:DF:50:86:73:65:BD |
Certificate # 2 - Common Name: E6
Decode this certificate for verbose information → launchIn place? | Yes, this certificate directly certifies the preceding one |
Subject Common Name | E6 |
Subject Organization | Let's Encrypt |
Issuer Common Name | ISRG Root X1 |
Issuer Organization | Internet Security Research Group |
Not Before: | Mar 13, 2024 00:00:00 GMT |
Not After: | Mar 12, 2027 23:59:59 GMT |
Signature Algorithm: | sha256WithRSAEncryption |
Serial Number: | b0573e9173972770dbb487cb3a452b38 |
SHA1 Fingerprint: | C9:4D:C4:83:1A:90:1A:9F:EC:0F:B4:9B:71:BD:49:B5:AA:D4:FA:D0 |
MD5 Fingerprint: | 26:86:4C:28:A4:DE:37:F5:69:C1:EC:87:A0:EC:CB:27 |
OpenSSL Handshake
depth=2 C = US, O = Internet Security Research Group, CN = ISRG Root X1 verify return:1 depth=1 C = US, O = Let's Encrypt, CN = E6 verify return:1 depth=0 CN = *.costan.ro verify return:1 CONNECTED(00000003) OCSP response: no response sent --- Certificate chain 0 s:CN = *.costan.ro i:C = US, O = Let's Encrypt, CN = E6 -----BEGIN CERTIFICATE----- MIIDdTCCAvygAwIBAgISBLatByjDQbPmzPfFWi6EqAcLMAoGCCqGSM49BAMDMDIx CzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQDEwJF NjAeFw0yNDEwMDgxNzAyMzhaFw0yNTAxMDYxNzAyMzdaMBYxFDASBgNVBAMMCyou Y29zdGFuLnJvMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEPiflG0+qpbPEbJn3 4CVJ2cfvC/gIV/DBGwxOEdwDPltqvSSP8CVBfKHOApGhwUgrRpnC+SuWLPEyuLSS jZpxvKOCAgwwggIIMA4GA1UdDwEB/wQEAwIHgDAdBgNVHSUEFjAUBggrBgEFBQcD AQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUmxTcm2wx7qR9oBs4 0YkDEtgqSiIwHwYDVR0jBBgwFoAUkydGmAOpUWiOmNbEQkjbI79YlNIwVQYIKwYB BQUHAQEESTBHMCEGCCsGAQUFBzABhhVodHRwOi8vZTYuby5sZW5jci5vcmcwIgYI KwYBBQUHMAKGFmh0dHA6Ly9lNi5pLmxlbmNyLm9yZy8wFgYDVR0RBA8wDYILKi5j b3N0YW4ucm8wEwYDVR0gBAwwCjAIBgZngQwBAgEwggEDBgorBgEEAdZ5AgQCBIH0 BIHxAO8AdQDgkrP8DB3I52g2H95huZZNClJ4GYpy1nLEsE2lbW9UBAAAAZJtSsDV AAAEAwBGMEQCIG0uSQuEmiLNKkogoco/1f6grnpIl+OE5cRlDMrkRqPSAiB4Ngod NZExM1KgX8lMYkE1qqTgZlTKAKw6lgygshU8qQB2AObSMWNAd4zBEEEG13G5zsHS QPaWhIb7uocyHf0eN45QAAABkm1KxSIAAAQDAEcwRQIhANnN1my2Q8NjKk0uvtpl W2RLmuZD39+VR6C6Pu8CaEseAiA9jivltOgBDP9rFcijYhIFI9t6hrTEZz2f03VZ ColcBzAKBggqhkjOPQQDAwNnADBkAjA9mg3a1MFlJ6Us/zSuALbgfAz/DpxDSb4p kKxA4joW8CkgthreW79/3KX9jpsoGmQCMHnf1tmwqsU7FI+G0tPWC/Le1/NiKho5 BEtQlQ8XFWvrTu1aN6Q99+tvRvmh2MvdNA== -----END CERTIFICATE----- 1 s:C = US, O = Let's Encrypt, CN = E6 i:C = US, O = Internet Security Research Group, CN = ISRG Root X1 -----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----- --- Server certificate subject=CN = *.costan.ro issuer=C = US, O = Let's Encrypt, CN = E6 --- No client certificate CA names sent Peer signing digest: SHA256 Peer signature type: ECDSA Server Temp Key: X25519, 253 bits --- SSL handshake has read 2608 bytes and written 438 bytes Verification: OK --- New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384 Server public key is 256 bit Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE No ALPN negotiated Early data was not sent Verify return code: 0 (ok) --- 250 CHUNKING DONE