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

mail.prohosting24.de · 45.142.115.116:443

Verified

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

Subject
CN=mail.prohosting24.de
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-10-06T13:02:30+00:00
Expires
2027-01-04T13:02:29+00:00
Days remaining
61
Serial (hex)
06FE73BD9EB9208875B269AF495375F643F0
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:autoconfig.csnj.de, DNS:autoconfig.nicolas-janzen.de, DNS:autoconfig.prohosting24.de, DNS:autodiscover.csnj.de, DNS:autodiscover.nicolas-janzen.de, DNS:autodiscover.prohosting24.de, DNS:mail.prohosting24.de

SHA-256 fingerprint

98:3B:F7:F5:58:C8:8A:5A:9F:72:1A:4C:78:04:B9:CB:3C:5B:DD:77:8F:A4:45:0F:2B:66:D4:DA:10:AD:1B:0E
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
B2:B0:3C:8E:9B:8D:BF:6F:0E:F9:D4:6B:FF:36:EF:43:30:0B:1D:2A
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:autoconfig.csnj.de, DNS:autoconfig.nicolas-janzen.de, DNS:autoconfig.prohosting24.de, DNS:autodiscover.csnj.de, DNS:autodiscover.nicolas-janzen.de, DNS:autodiscover.prohosting24.de, DNS:mail.prohosting24.de
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/113.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 00:1A:5D:1A:1C:2D:93:75:B6:48:55:78:F8:2F:71:A1: AE:6E:EF:39:7D:29:7C:8A:E3:15:7B:CA:DE:E1:A0:1E Timestamp : Oct 6 14:01:00.630 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:4F:65:91:AD:4D:C9:F8:2F:05:AE:47:65: 04:2D:51:43:BF:6B:62:44:4B:A4:10:E2:B2:67:24:99: 49:2A:1B:58:02:21:00:AC:E8:94:9D:7A:F8:A4:49:17: C1:63:48:B4:38:32:01:FC:CF:7C:F6:8B:49:B7:7F:AA: 75:A1:52:40:46:E9:EF Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 44:E8:22:FC:2B:AB:0E:92:EE:D0:E9:FA:D6:96:64:60: 27:76:D0:17:60:E0:89:05:09:C9:23:A1:B0:3F:C3:7F Timestamp : Oct 6 14:00:57.863 2026 GMT Extensions: 00:00:05:00:07:55:47:38 Signature : ecdsa-with-SHA256 30:45:02:20:7E:98:3F:E6:AC:57:A1:CD:F3:34:6F:E8: 98:08:EC:D3:44:CA:F5:BB:C5:72:1F:F0:0B:09:C8:41: C0:56:12:1F:02:21:00:8C:D2:CA:DD:81:42:45:61:44: AE:4F:8F:3E:A2:9C:32:BB:C9:CF:37:5C:5E:E7:BE:EB: 50:E2:46:19:56:72:8E
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-11-04T01:48:32+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR1
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
668
Serial (hex)
A20253F15F2691C05DC1CE13B9BCCA4E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
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
2129
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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