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 (72 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: | sha256WithRSAEncryption |
| Key Type: | ECDSA (secp256r1) |
| Key size: | 256 bits |
| Serial Number: | 4aca27457634abebc80de78fc9ae617390c |
| Not Before: | Apr 10, 2024 10:23:48 GMT |
| Not After: | Jul 09, 2024 10:23:47 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 → launch| Subject Common Name | *.costan.ro |
| Issuer Common Name | R3 |
| Issuer Organization | Let's Encrypt |
| Not Before: | Apr 10, 2024 10:23:48 GMT |
| Not After: | Jul 09, 2024 10:23:47 GMT |
| Signature Algorithm: | sha256WithRSAEncryption |
| Serial Number: | 4aca27457634abebc80de78fc9ae617390c |
| SHA1 Fingerprint: | 13:2E:7A:2D:95:FC:6E:DE:EE:20:D8:00:E0:95:03:3D:57:E9:1B:73 |
| MD5 Fingerprint: | 15:28:D1:CD:DD:74:42:45:83:4B:3A:AE:76:58:BB:04 |
Certificate # 2 - Common Name: R3
Decode this certificate for verbose information → launch| In place? | Yes, this certificate directly certifies the preceding one |
| Subject Common Name | R3 |
| Subject Organization | Let's Encrypt |
| Issuer Common Name | ISRG Root X1 |
| Issuer Organization | Internet Security Research Group |
| Not Before: | Sep 04, 2020 00:00:00 GMT |
| Not After: | Sep 15, 2025 16:00:00 GMT |
| Signature Algorithm: | sha256WithRSAEncryption |
| Serial Number: | 912b084acf0c18a753f6d62e25a75f5a |
| SHA1 Fingerprint: | A0:53:37:5B:FE:84:E8:B7:48:78:2C:7C:EE:15:82:7A:6A:F5:A4:05 |
| MD5 Fingerprint: | E8:29:E6:5D:7C:43:07:D6:FB:C1:3C:17:9E:03:7A:36 |
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 = R3 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 = R3 -----BEGIN CERTIFICATE----- MIIEGDCCAwCgAwIBAgISBKyidFdjSr68gN54/JrmFzkMMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yNDA0MTAxMDIzNDhaFw0yNDA3MDkxMDIzNDdaMBYxFDASBgNVBAMM CyouY29zdGFuLnJvMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAESOjqcK9SwTMk 5/z018uRimCg1gifpPOnrbLsCoZ4dzzGYHvHci5fjQ76K4HUYG51M7h7gX1erK6j G3ETpcbOwaOCAg0wggIJMA4GA1UdDwEB/wQEAwIHgDAdBgNVHSUEFjAUBggrBgEF BQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQUjVzRCSyUpIIm TXaREknX2xveLEAwHwYDVR0jBBgwFoAUFC6zF7dYVsuuUAlA5h+vnYsUwsYwVQYI KwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVodHRwOi8vcjMuby5sZW5jci5vcmcw IgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5pLmxlbmNyLm9yZy8wFgYDVR0RBA8wDYIL Ki5jb3N0YW4ucm8wEwYDVR0gBAwwCjAIBgZngQwBAgEwggEEBgorBgEEAdZ5AgQC BIH1BIHyAPAAdgBIsONr2qZHNA/lagL6nTDrHFIBy1bdLIHZu7+rOdiEcwAAAY7H v+81AAAEAwBHMEUCIBq+GvLCrcBn5YTfdYec6uFEXDNocLC2pSLJOkZ1xBEFAiEA zfhBZ8HDoK4Z7jpvrFz2xWH/sK6W1uOubtzsMU+1p90AdgA7U3d1Pi25gE6LMFsG /kA7Z9hPw/THvQANLXJv4frUFwAAAY7Hv+8wAAAEAwBHMEUCIQCafghTvmsflIBk RXJnfhZXFSwUosEf9KmvyB604dAFZwIgTM8FHpjp/kRchfh++mmzdrWZXjQr/0CP E/KP3ZYJ7U0wDQYJKoZIhvcNAQELBQADggEBACE1bHJIg4y4l6pc6sat945cgr3n 2E/f1PlXHDQDlY4m6UlhAZqvwuRyn5Dnv6cWftM5NFPSpk6yt8Jpiqv4pvB93oew 4bB6ds+Wcpz8AZi3LaRHW3SOjMCMWDtjjuXnwmlAM7F+smJ4Vi9p2PIFBUm6Nmfp LEnzLysW+FBwllzUFgbRUlrrsSrxcA2ygXVDX1nIEcnUoCibhzSDCrgLOfJ5Iaz9 EicByX2n1AAKOtDUSvh88doGgrH4BxjY09UqaB/NS3b+tASm8RHJuVmiFr2JyR7x Ni4wPLf1MjUKVRjViYIuBMDRG0IjYKcfCYn92LKMTZaLDwi0haVNbIVx3ao= -----END CERTIFICATE----- 1 s:C = US, O = Let's Encrypt, CN = R3 i:C = US, O = Internet Security Research Group, CN = ISRG Root X1 -----BEGIN CERTIFICATE----- MIIFFjCCAv6gAwIBAgIRAJErCErPDBinU/bWLiWnX1owDQYJKoZIhvcNAQELBQAw TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMjAwOTA0MDAwMDAw WhcNMjUwOTE1MTYwMDAwWjAyMQswCQYDVQQGEwJVUzEWMBQGA1UEChMNTGV0J3Mg RW5jcnlwdDELMAkGA1UEAxMCUjMwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK AoIBAQC7AhUozPaglNMPEuyNVZLD+ILxmaZ6QoinXSaqtSu5xUyxr45r+XXIo9cP R5QUVTVXjJ6oojkZ9YI8QqlObvU7wy7bjcCwXPNZOOftz2nwWgsbvsCUJCWH+jdx sxPnHKzhm+/b5DtFUkWWqcFTzjTIUu61ru2P3mBw4qVUq7ZtDpelQDRrK9O8Zutm NHz6a4uPVymZ+DAXXbpyb/uBxa3Shlg9F8fnCbvxK/eG3MHacV3URuPMrSXBiLxg Z3Vms/EY96Jc5lP/Ooi2R6X/ExjqmAl3P51T+c8B5fWmcBcUr2Ok/5mzk53cU6cG /kiFHaFpriV1uxPMUgP17VGhi9sVAgMBAAGjggEIMIIBBDAOBgNVHQ8BAf8EBAMC AYYwHQYDVR0lBBYwFAYIKwYBBQUHAwIGCCsGAQUFBwMBMBIGA1UdEwEB/wQIMAYB Af8CAQAwHQYDVR0OBBYEFBQusxe3WFbLrlAJQOYfr52LFMLGMB8GA1UdIwQYMBaA FHm0WeZ7tuXkAXOACIjIGlj26ZtuMDIGCCsGAQUFBwEBBCYwJDAiBggrBgEFBQcw AoYWaHR0cDovL3gxLmkubGVuY3Iub3JnLzAnBgNVHR8EIDAeMBygGqAYhhZodHRw Oi8veDEuYy5sZW5jci5vcmcvMCIGA1UdIAQbMBkwCAYGZ4EMAQIBMA0GCysGAQQB gt8TAQEBMA0GCSqGSIb3DQEBCwUAA4ICAQCFyk5HPqP3hUSFvNVneLKYY611TR6W PTNlclQtgaDqw+34IL9fzLdwALduO/ZelN7kIJ+m74uyA+eitRY8kc607TkC53wl ikfmZW4/RvTZ8M6UK+5UzhK8jCdLuMGYL6KvzXGRSgi3yLgjewQtCPkIVz6D2QQz CkcheAmCJ8MqyJu5zlzyZMjAvnnAT45tRAxekrsu94sQ4egdRCnbWSDtY7kh+BIm lJNXoB1lBMEKIq4QDUOXoRgffuDghje1WrG9ML+Hbisq/yFOGwXD9RiX8F6sw6W4 avAuvDszue5L3sz85K+EC4Y/wFVDNvZo4TYXao6Z0f+lQKc0t8DQYzk1OXVu8rp2 yJMC6alLbBfODALZvYH7n7do1AZls4I9d1P4jnkDrQoxB3UqQ9hVl3LEKQ73xF1O yK5GhDDX8oVfGKF5u+decIsH4YaTw7mP3GFxJSqv3+0lUFJoi5Lc5da149p90Ids hCExroL1+7mryIkXPeFM5TgO9r0rvZaBFOvV2z0gp35Z0+L4WPlbuEjN/lxPFin+ HlUjr8gRsI3qfJOQFy/9rKIJR0Y/8Omwt/8oTWgy1mdeHmmjk7j1nYsvC9JSQ6Zv MldlTTKB3zhThV1+XWYp6rjd5JW1zbVWEkLNxE7GJThEUG3szgBVGP7pSWTUTsqX nLRbwHOoq7hHwg== -----END CERTIFICATE----- --- Server certificate subject=CN = *.costan.ro issuer=C = US, O = Let's Encrypt, CN = R3 --- No client certificate CA names sent Peer signing digest: SHA256 Peer signature type: ECDSA Server Temp Key: X25519, 253 bits --- SSL handshake has read 2963 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