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 (58 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: | 198.252.206.16 |
Reverse IP lookup: | stackoverflow.com. |
Nameserver: | damian.ns.cloudflare.com. |
Nameserver: | sureena.ns.cloudflare.com. |
General Information
Common Name: | *.stackexchange.com |
SANs: | DNS:*.askubuntu.comDNS:*.blogoverflow.comDNS:*.mathoverflow.netDNS:*.meta.stackexchange.comDNS:*.meta.stackoverflow.comDNS:*.serverfault.comDNS:*.sstatic.netDNS:*.stackexchange.comDNS:*.stackoverflow.comDNS:*.stackoverflow.emailDNS:*.superuser.comDNS:askubuntu.comDNS:blogoverflow.comDNS:mathoverflow.netDNS:meta.ru.stackoverflow.comDNS:serverfault.comDNS:sstatic.netDNS:stackapps.comDNS:stackauth.comDNS:stackexchange.comDNS:stackoverflow.comDNS:stackoverflow.emailDNS:stacksnippets.netDNS:superuser.com Total number of SANs: 24 |
Signature Algorithm: | sha256WithRSAEncryption |
Key Type: | RSA |
Key size: | 2048 bits |
Serial Number: | 4192335bf27ca55d6fa97b2742833d8ccae |
Not Before: | Feb 26, 2024 02:37:50 GMT |
Not After: | May 26, 2024 02:37:49 GMT |
Number of certs: | 2 |
Revocation Status: | good |
OCSP Stapling: | Supported |
Server: | Not Provided |
HSTS: | Not Supported |
HPKP: | Not Supported |
Chain Information
Certificate # 1 - Common Name: *.stackexchange.com
Decode this certificate for verbose information → launchSubject Common Name | *.stackexchange.com |
Issuer Common Name | R3 |
Issuer Organization | Let's Encrypt |
Not Before: | Feb 26, 2024 02:37:50 GMT |
Not After: | May 26, 2024 02:37:49 GMT |
Signature Algorithm: | sha256WithRSAEncryption |
Serial Number: | 4192335bf27ca55d6fa97b2742833d8ccae |
SHA1 Fingerprint: | DC:C1:97:FB:78:9A:73:12:8D:7B:11:D0:80:2C:FA:CF:38:1E:B3:0A |
MD5 Fingerprint: | C0:3D:FD:88:29:45:49:DF:AA:86:BD:01:DE:EA:D8:D8 |
Certificate # 2 - Common Name: R3
Decode this certificate for verbose information → launchIn 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 = *.stackexchange.com verify return:1 CONNECTED(00000003) OCSP response: ====================================== OCSP Response Data: OCSP Response Status: successful (0x0) Response Type: Basic OCSP Response Version: 1 (0x0) Responder Id: C = US, O = Let's Encrypt, CN = R3 Produced At: Mar 27 05:55:00 2024 GMT Responses: Certificate ID: Hash Algorithm: sha1 Issuer Name Hash: 48DAC9A0FB2BD32D4FF0DE68D2F567B735F9B3C4 Issuer Key Hash: 142EB317B75856CBAE500940E61FAF9D8B14C2C6 Serial Number: 04192335BF27CA55D6FA97B2742833D8CCAE Cert Status: good This Update: Mar 27 05:55:00 2024 GMT Next Update: Apr 3 05:54:58 2024 GMT Signature Algorithm: sha256WithRSAEncryption 02:0f:dc:0d:6d:ce:40:b1:19:ee:81:d1:50:db:4a:a4:63:bb: 03:c4:c1:46:58:be:00:b8:e2:80:7b:e0:f4:79:d8:51:50:cd: 48:84:f5:06:72:29:10:68:38:b3:ac:3b:6d:9d:88:71:7a:a8: 7c:63:ad:69:99:34:3e:28:c9:17:cd:95:9a:d5:ae:15:71:7d: 45:7b:52:b0:dc:c0:03:2c:0e:7a:9d:c0:d3:87:06:45:7a:27: 1a:da:d1:d1:5e:ba:67:8c:d8:c5:28:ce:80:df:e7:cc:01:88: d9:b5:4f:4a:be:db:81:35:f1:3a:ff:9a:47:62:75:2b:44:48: d6:21:4a:09:7d:30:9a:91:96:6d:13:d3:33:9e:f6:c6:1f:60: 0d:d9:73:a2:9a:a9:15:69:43:a0:21:31:ec:e0:76:91:61:87: b0:85:dc:9e:26:83:f3:04:13:3b:df:60:36:6b:02:dd:36:83: 2f:a0:db:65:e9:6e:c2:2d:34:0c:a6:da:34:c7:30:63:3a:78: 37:35:98:02:18:3e:d1:89:78:93:8b:81:33:89:6e:e5:bd:9b: 09:f7:93:c8:ce:fa:b2:c4:5f:da:22:a3:3c:b8:8e:74:62:4b: e9:57:32:30:b5:80:ac:38:86:5d:5c:6a:67:82:cd:c8:5c:7d: 00:32:04:93 ====================================== --- Certificate chain 0 s:CN = *.stackexchange.com i:C = US, O = Let's Encrypt, CN = R3 -----BEGIN CERTIFICATE----- MIIGrDCCBZSgAwIBAgISBBkjNb8nylXW+peydCgz2MyuMA0GCSqGSIb3DQEBCwUA MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD EwJSMzAeFw0yNDAyMjYwMjM3NTBaFw0yNDA1MjYwMjM3NDlaMB4xHDAaBgNVBAMM Eyouc3RhY2tleGNoYW5nZS5jb20wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK AoIBAQDHmm/OFu3ho9Al6v7jDKInJbmeNORQofK2IsGwRU2tetVTHQSMW1K04Z4Y ESR0dJQs9kjgJZ8k5DVbolrgMU0QUAaGLpxoMHEproY8NFTjrGerko6dL0niGfTa oyLOKt/l0XjWb/LmKTlOVx7gTN8UpxP03pVLN5/1jbrS9/VeNo/7R0ePv8f/wzRN YpnfRX9ubm00vCIfvQUQXIn08Ozr3u4Bu9g3Srxb3zaK16Fw1hSlRFyiSGf9yl0X 67AnCyPHsFzn1zgiQ9v9qO+pckBLqeh2fr05yOxy+6KVS+RY6lMw8nntkwhJiysg leL7MlqEqzgXyoax5Ulr6xzLAyy7AgMBAAGjggPOMIIDyjAOBgNVHQ8BAf8EBAMC BaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAw HQYDVR0OBBYEFAttHlWcJgulSBIjeMRciDaYKXWYMB8GA1UdIwQYMBaAFBQusxe3 WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0 cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMuaS5sZW5j ci5vcmcvMIIB1QYDVR0RBIIBzDCCAciCDyouYXNrdWJ1bnR1LmNvbYISKi5ibG9n b3ZlcmZsb3cuY29tghIqLm1hdGhvdmVyZmxvdy5uZXSCGCoubWV0YS5zdGFja2V4 Y2hhbmdlLmNvbYIYKi5tZXRhLnN0YWNrb3ZlcmZsb3cuY29tghEqLnNlcnZlcmZh dWx0LmNvbYINKi5zc3RhdGljLm5ldIITKi5zdGFja2V4Y2hhbmdlLmNvbYITKi5z dGFja292ZXJmbG93LmNvbYIVKi5zdGFja292ZXJmbG93LmVtYWlsgg8qLnN1cGVy dXNlci5jb22CDWFza3VidW50dS5jb22CEGJsb2dvdmVyZmxvdy5jb22CEG1hdGhv dmVyZmxvdy5uZXSCGW1ldGEucnUuc3RhY2tvdmVyZmxvdy5jb22CD3NlcnZlcmZh dWx0LmNvbYILc3N0YXRpYy5uZXSCDXN0YWNrYXBwcy5jb22CDXN0YWNrYXV0aC5j b22CEXN0YWNrZXhjaGFuZ2UuY29tghFzdGFja292ZXJmbG93LmNvbYITc3RhY2tv dmVyZmxvdy5lbWFpbIIRc3RhY2tzbmlwcGV0cy5uZXSCDXN1cGVydXNlci5jb20w EwYDVR0gBAwwCjAIBgZngQwBAgEwggEEBgorBgEEAdZ5AgQCBIH1BIHyAPAAdwB2 /4g/Crb7lVHCYcz1h7o0tKTNuyncaEIKn+ZnTFo6dAAAAY3jfYgOAAAEAwBIMEYC IQDp1TocZNMOrdTKbJ2TrBaDWvLydceVUV/fQ23gWhujhQIhAJBCHGwrHDEMLmG+ 7C/86FSh8CuofQ3IVmBtQ1nGL2LGAHUAO1N3dT4tuYBOizBbBv5AO2fYT8P0x70A DS1yb+H61BcAAAGN432JSQAABAMARjBEAiBd+dFhVDGsd9SJhGHJ0L6IePX0vZmG JeSYTwf+XaomYAIgO0nc5gpCOCbjQZ09Utsk+cuD9wsjtAqs+7d52xbhPiUwDQYJ KoZIhvcNAQELBQADggEBAEfzqrEu0NKtI98EGs6Ckim4SyF7VBEslObSYwU9dOGD D6D3VRlFDSOvc3e0aoulzbb48VQduDs9zMcuHmQ+cZ/IkmHeGdVrO0YrBiq00clq M5zS13H/cghgXdjYV4lPO4+4JKd1gFjW7F0uWoObrDTbcZVHRv81QJayCbP3XR3l mYsLqoGOP5yLjrO+13XNsbvHz41mlnpFkRR9fGx6qHrqEADBcY4iKpP2iKBx+zGn R7IawV314gffFzR9KXN4E4h6NadC3g8VLM2LFA5U/2PLusnLu1ebqBCdd9voWFhI AgDpDT7DGBpjcvGxqrCdPHJAApKoTu0w77LIuuJjiF4= -----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 = *.stackexchange.com issuer=C = US, O = Let's Encrypt, CN = R3 --- No client certificate CA names sent Peer signing digest: SHA512 Peer signature type: RSA Server Temp Key: ECDH, P-256, 256 bits --- SSL handshake has read 4052 bytes and written 448 bytes Verification: OK --- New, TLSv1.2, Cipher is ECDHE-RSA-AES128-GCM-SHA256 Server public key is 2048 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE No ALPN negotiated SSL-Session: Protocol : TLSv1.2 Cipher : ECDHE-RSA-AES128-GCM-SHA256 Session-ID: 893DC1C9B43D05337A7773EFDF7682721F716732D266DF73008AEF0410EC1F4D Session-ID-ctx: Master-Key: A398FC7892BCC24AD9641EF11E0FB30407DBFDF298E8AFF8BE6432FCE9C777FD53A245F5D74DC0FBE7D8ED75882E88BF PSK identity: None PSK identity hint: None SRP username: None Start Time: 1711664318 Timeout : 7200 (sec) Verify return code: 0 (ok) Extended master secret: no --- DONE