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

akdb.de · 193.28.249.36:443

Verified

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

Subject
C=DE ST=Bayern L=München O=Anstalt für Kommunale Datenverarbeitung in Bayern (AKDB) CN=www.akdb.de
Issuer
C=DE O=Deutsche Telekom Security GmbH CN=TeleSec Business TLS-CA 2022
Valid from
2026-02-02T06:08:37+00:00
Expires
2027-02-02T23:59:59+00:00
Days remaining
132
Serial (hex)
347E386D0465D09EB127B22937343111
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:www.akdb.de, DNS:kundenportal.akdb.de, DNS:akdb.de

SHA-256 fingerprint

06:9C:8C:09:7A:09:7B:1F:1A:F7:6D:F1:7F:D1:EE:C9:95:7A:FD:B4:F9:E0:9A:F9:7C:E2:B2:F2:62:34:A5:E5
Certificate extensions & PEM
authorityKeyIdentifier
37:5E:AA:A8:14:DB:B9:58:70:8C:9D:B9:38:41:73:0D:87:18:AD:0F
subjectKeyIdentifier
31:86:4C:BD:76:6B:F1:4F:B4:BA:07:F7:59:7D:4D:65:B7:44:B1:63
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://docs.businessid.telesec.de/cps/businessid.htm
basicConstraints
CA:FALSE
crlDistributionPoints
Full Name: URI:http://crl.sbca.telesec.de/rl/TeleSec_Business_TLS-CA_2022.crl
authorityInfoAccess
OCSP - URI:http://ocsp.businessid.telesec.de/ocspr CA Issuers - URI:http://crt.sbca.telesec.de/crt/TeleSec_Business_TLS-CA_2022.crt
subjectAltName
DNS:www.akdb.de, DNS:kundenportal.akdb.de, DNS:akdb.de
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A2:81:00:18:73:4E:17:6E:1D:47:E0:95:40:F3:81:BA: 54:66:97:CD:63:A8:43:50:71:6E:B8:09:4E:DA:F1:0D Timestamp : Feb 2 06:08:40.551 2026 GMT Extensions: 00:00:05:00:02:05:A7:08 Signature : ecdsa-with-SHA256 30:44:02:20:26:EB:48:73:A9:06:7E:B3:0C:C7:2B:68: C4:81:73:98:A6:27:B1:BD:74:1C:46:E9:B7:CE:45:75: BC:F2:18:6D:02:20:7E:1F:01:A9:B6:67:D8:C5:0C:56: 6D:24:B2:FB:30:C3:4D:C8:2C:45:2F:EC:4F:ED:6C:60: B6:65:5F:58:1F:1B 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 : Feb 2 06:08:39.493 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:5F:39:C6:8F:62:78:76:8B:D2:FC:84:91: BC:96:22:C7:FF:A9:00:C2:40:CD:7E:30:CF:34:02:06: 5B:2B:37:68:02:20:05:81:61:40:FA:DF:00:42:BC:AE: 82:DD:0B:4E:30:85:88:FC:52:72:13:33:9F:0D:2D:4D: 0E:6F:D5:DB:AB:27 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 : Feb 2 06:08:40.185 2026 GMT Extensions: 00:00:05:00:02:34:23:47 Signature : ecdsa-with-SHA256 30:44:02:20:75:54:C6:94:CC:7B:35:B1:68:C1:8B:39: A3:E2:D2:49:20:79:20:D8:71:07:75:08:6C:0C:88:88: 58:00:92:13:02:20:6F:C4:7A:37:0B:F8:E9:A5:F7:E1: 25:8B:CC:71:21:FF:5D:E4:DB:CC:46:DD:02:2C:E3:B5: B4:D4:8F:B0:92:7B Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 59:6E:6C:33:86:94:B2:59:72:A2:56:C8:A0:E8:DD:90: 4A:76:E8:08:3D:DA:87:3B:01:08:38:28:14:3C:EE:59 Timestamp : Feb 2 06:08:39.434 2026 GMT Extensions: 00:00:05:00:00:1F:E2:35 Signature : ecdsa-with-SHA256 30:44:02:20:1A:35:93:A2:D0:CE:F4:C2:F6:E5:43:26: 15:31:08:A4:07:F1:53:62:C5:88:8F:89:18:D2:BD:F3: 91:F5:BF:45:02:20:04:B6:48:60:82:F1:01:FB:21:6C: 6C:4A:2F:1F:19:09:BA:04:3F:77:2D:D5:84:B0:FD:3B: 14:61:1D:55:02:5F Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Feb 2 06:08:39.411 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:9C:48:05:04:18:C2:78:4F:13:E6:8C: 78:B1:A6:DA:FD:7C:57:C0:AC:AD:BB:46:86:1F:2D:28: F4:6C:0B:65:74:02:20:23:26:6F:F9:EE:5E:51:ED:3C: BD:36:B1:80:9E:EA:39:25:34:82:63:C0:00:A9:DE:C2: F3:42:6A:87:7C:3C:48
-----BEGIN CERTIFICATE-----
MIIJ8jCCB9qgAwIBAgIQNH44bQRl0J6xJ7IpNzQxETANBgkqhkiG9w0BAQsFADBd
MQswCQYDVQQGEwJERTEnMCUGA1UECgweRGV1dHNjaGUgVGVsZWtvbSBTZWN1cml0
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LB+RTLdhdei1tVdu89pwRpU6Znpe+WvsFjkyr5Dd3hSh+F7H4/1iv8S6avxQb8J7
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DgQWBBQxhky9dmvxT7S6B/dZfU1lt0SxYzAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0l
BBYwFAYIKwYBBQUHAwIGCCsGAQUFBwMBMFcGA1UdIARQME4wTAYGZ4EMAQICMEIw
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PEgwDQYJKoZIhvcNAQELBQADggIBAIq2gCJusRz02yWQcu9HaauNhBQy8CtlLtgp
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7TUAXj3wRVAL5Zv3ErkfeiulZnqR/Dwlh3ti+U3Rt83hviXRni5xnkWAAVlyH4Fq
PexGsm6m
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-23T15:37:07+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=DE O=Deutsche Telekom Security GmbH CN=TeleSec Business TLS-CA 2022
Issuer
C=DE O=T-Systems Enterprise Services GmbH OU=T-Systems Trust Center CN=T-TeleSec GlobalRoot Class 2
Valid from
2022-06-21T11:14:51+00:00
Expires
2032-06-21T23:59:59+00:00
Days remaining
2098
Serial (hex)
184D6BB87845A9671E78F69D1CE8AB8B
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

A3:F2:A1:0A:36:6A:FF:77:4C:BB:4E:6E:C4:C8:A8:EF:70:7C:03:E9:32:B4:C4:6E:50:78:76:7A:AC:F1:ED:60
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
subjectKeyIdentifier
37:5E:AA:A8:14:DB:B9:58:70:8C:9D:B9:38:41:73:0D:87:18:AD:0F
authorityKeyIdentifier
BF:59:20:36:00:79:A0:A0:22:6B:8C:D5:F2:61:D2:B8:2C:CB:82:4A
basicConstraints
CA:TRUE, pathlen:0
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://grcl2.crl.telesec.de/rl/T-TeleSec_GlobalRoot_Class_2.crl
authorityInfoAccess
OCSP - URI:http://grcl2.ocsp.telesec.de/ocspr CA Issuers - URI:http://grcl2.crt.telesec.de/crt/T-TeleSec_GlobalRoot_Class_2.crt
certificatePolicies
Policy: 2.23.140.1.2.2
-----BEGIN CERTIFICATE-----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Jou6L/Uz9iOkXjyAzFOODMbOhJOZ4PW9/joKx+gTJ8E283OcRUasZ+e/tvkr5Ts2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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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