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

netkom.de · 178.63.48.177:443

Verified

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

Subject
C=DE ST=Thüringen L=Erfurt O=TEAG Thüringer Energie AG CN=www.netkom.de
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Valid from
2025-12-22T00:00:00+00:00
Expires
2027-01-22T23:59:59+00:00
Days remaining
103
Serial (hex)
059885D1241661FB3642929A3BF2A184
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.netkom.de, DNS:netkom.de

SHA-256 fingerprint

C7:4B:F4:AD:97:52:DA:31:42:C2:70:64:8D:A0:4D:7F:F0:3A:37:42:15:2C:6D:E2:03:8E:2B:86:83:DB:AF:F6
Certificate extensions & PEM
authorityKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
subjectKeyIdentifier
30:2C:AF:9D:3E:CB:DE:D9:50:86:53:18:08:B9:BB:6B:18:C4:6F:37
subjectAltName
DNS:www.netkom.de, DNS:netkom.de
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://cdp.thawte.com/ThawteTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.thawte.com CA Issuers - URI:http://cacerts.thawte.com/ThawteTLSRSACAG1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Dec 22 14:16:25.946 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:9A:24:4F:19:2C:77:2D:5E:38:D2:6E: 2B:21:14:D8:EE:4A:9B:9F:8E:00:E1:D1:41:11:97:97: 73:A4:FD:81:53:02:20:4D:72:0A:A7:94:81:C4:E2:94: FC:BE:FC:4D:2D:BB:36:C1:BF:01:AE:ED:F6:29:59:4B: B6:12:A9:3D:30:95:A3 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 : Dec 22 14:16:25.970 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:99:B1:8E:98:9F:18:B4:D7:4F:CD:F0: FF:5D:C6:FF:84:48:78:5F:D6:4E:F2:CD:8F:2B:14:C2: 41:F5:9E:39:F1:02:20:57:0B:CC:3B:2C:F9:3C:FF:E5: CF:C7:20:BE:98:8B:E7:97:48:27:34:FC:B2:89:3C:B4: 5E:11:E0:93:9A:C7:14 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 : Dec 22 14:16:26.165 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:68:D6:56:12:F9:EA:D2:1A:1A:EA:D0:26: 45:68:0A:87:9B:70:18:6D:F3:CB:D7:E5:93:C8:D0:07: 16:6A:45:E9:02:21:00:F1:77:13:C1:87:AC:C8:C0:61: BF:26:90:F5:B6:01:42:77:81:71:C5:5F:BD:F2:22:1D: BC:BF:5A:77:43:5C:1E
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-11T16:51:00+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:24:25+00:00
Expires
2027-11-02T12:24:25+00:00
Days remaining
386
Serial (hex)
090EE8C5DE5BFA62D2AE2FF7097C4857
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

4B:CC:5E:23:4F:E8:1E:DE:4E:AF:88:3A:A1:9C:31:33:5B:0B:26:E8:5E:06:6B:99:45:E4:CB:61:53:EB:20:C2
Certificate extensions & PEM
subjectKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.digicert.com/CPS
-----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

Registration / WHOIS →DNS records →