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

showeikh.de · 81.209.248.206:443

Verified

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

Subject
CN=showeikh.de
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-10-04T19:28:24+00:00
Expires
2027-01-02T19:28:23+00:00
Days remaining
65
Serial (hex)
05ABD363C3C6A9A24FA198F8B86EACF78199
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:showeikh.de, DNS:webmail.showeikh.de, DNS:www.showeikh.de

SHA-256 fingerprint

0A:BD:78:EE:09:D0:D8:3C:6B:53:E5:29:4F:AF:B8:4F:C1:AD:69:50:F7:D8:B6:74:A9:44:2D:A2:1F:CD:29:7F
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
81:9A:A5:79:AF:2D:EE:FF:B7:27:63:A9:76:83:0F:1C:25:72:60:16
authorityKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityInfoAccess
CA Issuers - URI:http://yr2.i.lencr.org/
subjectAltName
DNS:showeikh.de, DNS:webmail.showeikh.de, DNS:www.showeikh.de
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/26.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Oct 4 20:26:54.180 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:54:BB:38:91:8C:FF:BB:6F:AB:B3:88:42: EC:2A:A1:99:EE:0C:79:38:7F:78:6E:48:59:C0:E9:8C: F3:53:5E:DB:02:20:35:AC:74:25:99:B6:DB:5B:14:F4: E0:1A:0B:C9:4C:56:6E:A8:F6:7C:B7:90:24:ED:0D:B2: 48:D9:FC:BF:EF:58 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Oct 4 20:26:54.861 2026 GMT Extensions: 00:00:05:00:1C:2A:2A:D9 Signature : ecdsa-with-SHA256 30:45:02:21:00:B9:22:A8:88:F7:EC:90:B0:11:3D:26: 5D:26:7A:E3:98:8E:C6:89:D7:97:B0:CC:72:BF:70:E2: 0D:C3:38:11:6E:02:20:47:EE:CA:6E:ED:82:38:63:59: 71:07:3D:69:FE:8B:02:9B:0C:AF:98:72:C2:D6:DF:03: 13:6C:05:96:B1:09:E6
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-29T10:46:27+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR2
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
674
Serial (hex)
4EBD24947E24D394802D84A52FD5B319
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

23:8B:85:A0:09:9C:65:B9:70:47:7D:57:24:F1:A1:D4:75:CE:50:58:CF:FE:4E:FA:87:33:89:9B:DB:86:3C:47
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
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
2135
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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