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

seeburger.de · 89.107.188.115:443

Verified

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

Subject
CN=seeburger.com
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-09-17T18:58:51+00:00
Expires
2026-12-16T18:58:50+00:00
Days remaining
38
Serial (hex)
05BCD9ECF5057CAD86C90FFF4A52A863233D
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:cz.seeburger.com, DNS:prototype.seeburger.com, DNS:seeburger.asia, DNS:seeburger.be, DNS:seeburger.ch, DNS:seeburger.com, DNS:seeburger.de, DNS:seeburger.dk, DNS:seeburger.es, DNS:seeburger.eu, DNS:seeburger.fr, DNS:seeburger.in, DNS:seeburger.it, DNS:seeburger.jp, DNS:seeburger.nl, DNS:seeburger.ru, DNS:seeburger.se, DNS:seeburger.tw, DNS:www.cz.seeburger.com, DNS:www.seeburger.asia, DNS:www.seeburger.be, DNS:www.seeburger.ch, DNS:www.seeburger.com, DNS:www.seeburger.de, DNS:www.seeburger.dk, DNS:www.seeburger.es, DNS:www.seeburger.eu, DNS:www.seeburger.fr, DNS:www.seeburger.in, DNS:www.seeburger.it, DNS:www.seeburger.jp, DNS:www.seeburger.nl, DNS:www.seeburger.ru, DNS:www.seeburger.se, DNS:www.seeburger.tw

SHA-256 fingerprint

D9:77:4C:25:43:33:FD:6B:F1:37:E9:C1:5C:01:62:E6:FA:0E:9D:11:C9:5D:98:41:7C:33:63:CF:2F:85:81:69
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
8E:22:7E:EF:B4:DA:66:F6:9E:EA:4C:11:C7:BF:28:7B:65:AE:30:BE
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:cz.seeburger.com, DNS:prototype.seeburger.com, DNS:seeburger.asia, DNS:seeburger.be, DNS:seeburger.ch, DNS:seeburger.com, DNS:seeburger.de, DNS:seeburger.dk, DNS:seeburger.es, DNS:seeburger.eu, DNS:seeburger.fr, DNS:seeburger.in, DNS:seeburger.it, DNS:seeburger.jp, DNS:seeburger.nl, DNS:seeburger.ru, DNS:seeburger.se, DNS:seeburger.tw, DNS:www.cz.seeburger.com, DNS:www.seeburger.asia, DNS:www.seeburger.be, DNS:www.seeburger.ch, DNS:www.seeburger.com, DNS:www.seeburger.de, DNS:www.seeburger.dk, DNS:www.seeburger.es, DNS:www.seeburger.eu, DNS:www.seeburger.fr, DNS:www.seeburger.in, DNS:www.seeburger.it, DNS:www.seeburger.jp, DNS:www.seeburger.nl, DNS:www.seeburger.ru, DNS:www.seeburger.se, DNS:www.seeburger.tw
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/62.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Sep 17 19:57:22.049 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:A3:1C:27:06:C3:73:79:F6:90:DC:DC: D7:9B:EC:25:D9:5E:F2:F3:B3:C9:42:69:1F:BE:53:B2: C7:5D:51:7E:52:02:20:42:F9:FA:BB:20:D7:37:C3:6B: 79:51:FA:69:4F:B6:25:AE:90:DD:CE:32:D5:8E:14:9D: 3F:3B:8F:34:C6:DF:20 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:AF:86:3D:3B:3E:E5:9F:A5:77:DE:A8:24:5D:36:B0: D9:ED:22:A2:23:F4:61:77:41:22:94:52:EE:95:50:5F Timestamp : Sep 17 19:57:22.335 2026 GMT Extensions: 00:00:05:00:30:F0:BB:98 Signature : ecdsa-with-SHA256 30:46:02:21:00:B7:09:71:18:66:CE:DF:1B:38:0F:4B: F5:7C:32:87:B7:45:D2:D2:2F:6F:7F:CA:C4:CB:C7:A3: BE:95:82:42:AB:02:21:00:A6:DC:9A:AE:DE:70:E4:04: C1:01:78:98:77:C2:E9:08:BE:FF:1D:C0:EA:31:E6:80: C1:3B:25:16:87:E6:53:30
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-11-07T21:13:23+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
665
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
2126
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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