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

TLSv1.2

mysysadmin.de · 54.247.90.14:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. Peer certificate CN=`216c6f5208304a60a408133b2132e068.com' did not match expected CN=`mysysadmin.de'

Certificate verification failed

Subject
CN=216c6f5208304a60a408133b2132e068.com
Issuer
C=US O=Amazon CN=Amazon RSA 2048 M04
Valid from
2026-01-12T00:00:00+00:00
Expires
2027-02-10T23:59:59+00:00
Days remaining
133
Serial (hex)
03B4069F541A8CC754CD2532E8253FE9
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:216c6f5208304a60a408133b2132e068.com

SHA-256 fingerprint

71:B6:85:DF:DE:8C:96:AC:03:B8:3E:2B:49:AF:13:E5:F9:61:BC:99:76:FA:F1:90:CE:21:11:E4:49:64:54:51
Certificate extensions & PEM
authorityKeyIdentifier
1F:52:92:61:56:82:54:7F:81:66:D8:1D:3D:0A:AA:32:5C:87:DD:08
subjectKeyIdentifier
A0:7C:40:05:AE:BC:6B:3C:37:18:29:5F:61:54:24:6B:AF:56:B8:68
subjectAltName
DNS:216c6f5208304a60a408133b2132e068.com
certificatePolicies
Policy: 2.23.140.1.2.1
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl.r2m04.amazontrust.com/r2m04.crl
authorityInfoAccess
OCSP - URI:http://ocsp.r2m04.amazontrust.com CA Issuers - URI:http://crt.r2m04.amazontrust.com/r2m04.cer
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 : Jan 12 00:39:23.796 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:60:66:15:C6:46:F3:B0:5D:5C:6E:D5:5B: 83:96:BC:47:C4:5F:FD:9B:AC:87:F5:7D:43:11:B9:74: C4:EA:A2:B6:02:20:6A:78:2B:21:71:19:D3:92:50:AB: 34:A5:33:29:4B:8E:4E:2A:EB:74:BB:1E:8A:EE:A0:7A: 32:A3:C9:CC:8B:2F 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 : Jan 12 00:39:23.805 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:4E:E0:13:AE:75:B5:92:91:3C:F0:E3:30: 25:D9:81:9F:33:CA:C2:B9:78:70:C4:90:4F:B0:F6:5A: 11:43:F4:2E:02:20:1A:11:A8:2E:EF:09:5E:E6:55:FF: 5A:01:FC:82:D4:9F:FE:88:86:09:E5:F5:F1:53:4B:1B: 20:4C:88:8B:01:C0 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 : Jan 12 00:39:23.997 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:08:6F:DB:77:AB:90:0D:07:67:17:3C:E6: F3:14:84:9D:D3:F5:0B:A3:F2:63:0D:32:54:9C:2A:82: 7F:B0:28:4F:02:21:00:86:57:D8:6D:BF:C2:01:12:FC: 87:F6:DE:DD:96:58:D7:2C:30:23:86:5D:AF:DC:15:5E: 1B:A7:72:13:84:40:48
-----BEGIN CERTIFICATE-----
MIIF6DCCBNCgAwIBAgIQA7QGn1QajMdUzSUy6CU/6TANBgkqhkiG9w0BAQsFADA8
MQswCQYDVQQGEwJVUzEPMA0GA1UEChMGQW1hem9uMRwwGgYDVQQDExNBbWF6b24g
UlNBIDIwNDggTTA0MB4XDTI2MDExMjAwMDAwMFoXDTI3MDIxMDIzNTk1OVowLzEt
MCsGA1UEAxMkMjE2YzZmNTIwODMwNGE2MGE0MDgxMzNiMjEzMmUwNjguY29tMIIB
IjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtD+XvimIPH0WHU7MguB8U9C9
8yQap49VG1CLEN7TVikAUefY3Hc6S1/YqECP5/87jQN3HOUDvtWkLMHGryHyvdOc
OyNrDiVdVdenUzVu2rght3i7lPHf++8oYaMZmQafqQJgmzqy22h2ATLmozFLTzoo
YhYDKoOIp7BO5pz0WVScNQ4CrNrBt1ngEnyHZKWEX4QKok9/fXSIIr4WzKqEkqV5
prTf32jfu+dmu0P6BUcPQSgSlcINO1fMCpEi9k0xSMIN3Mnk8rg4cpsCKeAuezX3
Ok1umCELQrGu5ej3ji7Wd3hxUyPT4qIEDggbkgMOgdJ/TgaE6xC/LBC2fT9M7QID
AQABo4IC8TCCAu0wHwYDVR0jBBgwFoAUH1KSYVaCVH+BZtgdPQqqMlyH3QgwHQYD
VR0OBBYEFKB8QAWuvGs8NxgpX2FUJGuvVrhoMC8GA1UdEQQoMCaCJDIxNmM2ZjUy
MDgzMDRhNjBhNDA4MTMzYjIxMzJlMDY4LmNvbTATBgNVHSAEDDAKMAgGBmeBDAEC
ATAOBgNVHQ8BAf8EBAMCBaAwEwYDVR0lBAwwCgYIKwYBBQUHAwEwOwYDVR0fBDQw
MjAwoC6gLIYqaHR0cDovL2NybC5yMm0wNC5hbWF6b250cnVzdC5jb20vcjJtMDQu
Y3JsMHUGCCsGAQUFBwEBBGkwZzAtBggrBgEFBQcwAYYhaHR0cDovL29jc3AucjJt
MDQuYW1hem9udHJ1c3QuY29tMDYGCCsGAQUFBzAChipodHRwOi8vY3J0LnIybTA0
LmFtYXpvbnRydXN0LmNvbS9yMm0wNC5jZXIwDAYDVR0TAQH/BAIwADCCAXwGCisG
AQQB1nkCBAIEggFsBIIBaAFmAHUATGPcmOWcHauI9h6KPd6uj6tEozd7X5uUw/uh
nPzBviYAAAGbr6StlAAABAMARjBEAiBgZhXGRvOwXVxu1VuDlrxHxF/9m6yH9X1D
Ebl0xOqitgIgangrIXEZ05JQqzSlMylLjk4q63S7HoruoHoyo8nMiy8AdQAcn2gs
6frwRWlQ+BuWiofd2zIQ2EzmyLLjglJKxM9ZnwAAAZuvpK2dAAAEAwBGMEQCIE7g
E651tZKRPPDjMCXZgZ8zysK5eHDEkE+w9loRQ/QuAiAaEagu7wle5lX/WgH8gtSf
/oiGCeX18VNLGyBMiIsBwAB2AGBMmq96f3dfAdQG/JINyJnrCxx9+MlSG/r6F3c7
l4vJAAABm6+krl0AAAQDAEcwRQIgCG/bd6uQDQdnFzzm8xSEndP1C6PyYw0yVJwq
gn+wKE8CIQCGV9htv8IBEvyH9t7dlljXLDAjhl2v3BVeG6dyE4RASDANBgkqhkiG
9w0BAQsFAAOCAQEAd/2R/F2K8P0o4eJfEW8vocNFBmhpaAW4vRAPJ0cXWEpMsNLg
25o/glAbMpXGUupWhxf7+Gu5YGyNuSbjElMjCd00PQGlGcWvLtAvVX1LPQh+Rl0B
LDZ1p7HBg6IY9YEn4M/AgbRhbD0lT5VyM6nxkCyvyq2/GcpdWMNd3AeU/xUO7dPA
XwRqh5tHOTvI/ht2jEwfrgPp+Cbvnah7cgXzHI3tddSQMb0SE1F0pY1/DljlPUP0
KfR0OhJE0UGkWG4I5C9S6I7LLlcnddatqpJP+GNGW27H3M257bK/w4dM+2PhYPNj
cA20bMfrK1+hmktLdLBw23obmaLRhFLSz/znVA==
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-09-30T16:46:01+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Amazon CN=Amazon RSA 2048 M04
Issuer
C=US O=Amazon CN=Amazon Root CA 1
Valid from
2022-08-23T22:26:35+00:00
Expires
2030-08-23T22:26:35+00:00
Days remaining
1423
Serial (hex)
0773124F2A952E3ED18A58BDB85D1BC0CE5F27
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:8B:DF:6E:23:AC:97:1E:B4:E6:26:B2:79:DD:6A:26:F0:57:51:0F:1D:E3:94:29:3A:5E:EA:28:60:DE:01:9B
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
subjectKeyIdentifier
1F:52:92:61:56:82:54:7F:81:66:D8:1D:3D:0A:AA:32:5C:87:DD:08
authorityKeyIdentifier
84:18:CC:85:34:EC:BC:0C:94:94:2E:08:59:9C:C7:B2:10:4E:0A:08
authorityInfoAccess
OCSP - URI:http://ocsp.rootca1.amazontrust.com CA Issuers - URI:http://crt.rootca1.amazontrust.com/rootca1.cer
crlDistributionPoints
Full Name: URI:http://crl.rootca1.amazontrust.com/rootca1.crl
certificatePolicies
Policy: 2.23.140.1.2.1
-----BEGIN CERTIFICATE-----
MIIEXjCCA0agAwIBAgITB3MSTyqVLj7Rili9uF0bwM5fJzANBgkqhkiG9w0BAQsF
ADA5MQswCQYDVQQGEwJVUzEPMA0GA1UEChMGQW1hem9uMRkwFwYDVQQDExBBbWF6
b24gUm9vdCBDQSAxMB4XDTIyMDgyMzIyMjYzNVoXDTMwMDgyMzIyMjYzNVowPDEL
MAkGA1UEBhMCVVMxDzANBgNVBAoTBkFtYXpvbjEcMBoGA1UEAxMTQW1hem9uIFJT
QSAyMDQ4IE0wNDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAM3pVR6A
lQOp4xe776FdePXyejgA38mYx1ou9/jrpV6Sfn+/oqBKgwhY6ePsQHHQayWBJdBn
v4Wz363qRI4XUh9swBFJ11TnZ3LqOMvHmWq2+loA0QPtOfXdJ2fHBLrBrngtJ/GB
0p5olAVYrSZgvQGP16Rf8ddtNyxEEhYm3HuhmNi+vSeAq1tLYJPAvRCXonTpWdSD
xY6hvdmxlqTYi82AtBXSfpGQ58HHM0hw0C6aQakghrwWi5fGslLOqzpimNMIsT7c
qa0GJx6JfKqJqmQQNplO2h8n9ZsFJgBowof01ppdoLAWg6caMOM0om/VILKaa30F
9W/r8Qjah7ltGVkCAwEAAaOCAVowggFWMBIGA1UdEwEB/wQIMAYBAf8CAQAwDgYD
VR0PAQH/BAQDAgGGMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAdBgNV
HQ4EFgQUH1KSYVaCVH+BZtgdPQqqMlyH3QgwHwYDVR0jBBgwFoAUhBjMhTTsvAyU
lC4IWZzHshBOCggwewYIKwYBBQUHAQEEbzBtMC8GCCsGAQUFBzABhiNodHRwOi8v
b2NzcC5yb290Y2ExLmFtYXpvbnRydXN0LmNvbTA6BggrBgEFBQcwAoYuaHR0cDov
L2NydC5yb290Y2ExLmFtYXpvbnRydXN0LmNvbS9yb290Y2ExLmNlcjA/BgNVHR8E
ODA2MDSgMqAwhi5odHRwOi8vY3JsLnJvb3RjYTEuYW1hem9udHJ1c3QuY29tL3Jv
b3RjYTEuY3JsMBMGA1UdIAQMMAowCAYGZ4EMAQIBMA0GCSqGSIb3DQEBCwUAA4IB
AQA+1O5UsAaNuW3lHzJtpNGwBnZd9QEYFtxpiAnIaV4qApnGS9OCw5ZPwie7YSlD
ZF5yyFPsFhUC2Q9uJHY/CRV1b5hIiGH0+6+w5PgKiY1MWuWT8VAaJjFxvuhM7a/e
fN2TIw1Wd6WCl6YRisunjQOrSP+unqC8A540JNyZ1JOE3jVqat3OZBGgMvihdj2w
Y23EpwesrKiQzkHzmvSH67PVW4ycbPy08HVZnBxZ5NrlGG9bwXR3fNTaz+c+Ej6c
5AnwI3qkOFgSkg3Y75cdFz6pO/olK+e3AqygAcv0WjzmkDPuBjssuZjCHMC56oH3
GJkV29Di2j5prHJbwZjG1inU
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=Amazon CN=Amazon Root CA 1
Issuer
C=US ST=Arizona L=Scottsdale O=Starfield Technologies, Inc. CN=Starfield Services Root Certificate Authority - G2
Valid from
2015-05-25T12:00:00+00:00
Expires
2037-12-31T01:00:00+00:00
Days remaining
4109
Serial (hex)
067F944A2A27CDF3FAC2AE2B01F908EEB9C4C6
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

87:DC:D4:DC:74:64:0A:32:2C:D2:05:55:25:06:D1:BE:64:F1:25:96:25:80:96:54:49:86:B4:85:0B:C7:27:06
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
84:18:CC:85:34:EC:BC:0C:94:94:2E:08:59:9C:C7:B2:10:4E:0A:08
authorityKeyIdentifier
9C:5F:00:DF:AA:01:D7:30:2B:38:88:A2:B8:6D:4A:9C:F2:11:91:83
authorityInfoAccess
OCSP - URI:http://ocsp.rootg2.amazontrust.com CA Issuers - URI:http://crt.rootg2.amazontrust.com/rootg2.cer
crlDistributionPoints
Full Name: URI:http://crl.rootg2.amazontrust.com/rootg2.crl
certificatePolicies
Policy: X509v3 Any Policy
-----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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