k-str.de
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:6b:e2:c9:ab:d0:b1:b2:86:0d:3a:cd:62:42:2f:22:c4:cf was issued on by Let's Encrypt.
With 3 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.
We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=k-str.de
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:6b:e2:c9:ab:d0:b1:b2:86:0d:3a:cd:62:42:2f:22:c4:cfSerial Number (int): 298048523719363606714060424252128718144719
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: f6:f5:1b:01:6d:84:74:91:44:a3:bd:83:f9:4a:91:0d:ed:af:0d:dd
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): b8:8b:89:19:fc:e7:49:da:0d:90:a9:f4:f8:32:dc:18:fe:e8:90:cb
Fingerprint (sha256): 40:fd:c5:cb:24:99:48:5e:5e:32:b3:3d:70:d7:f3:b6:08:15:ad:98:e0:d9:91:eb:45:45:95:97:10:a3:4b:6f
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate k-str.de
3
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for k-str.de
Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
k-str.de
webmail.k-str.de
www.k-str.de
webmail.k-str.de
www.k-str.de
Other certificates including the domain name k-str.de
(limited to 100 certificates)
Certificate
The complete raw certificate details for k-str.de in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGGzCCBQOgAwIBAgISA2viyavQsbKGDTrNYkIvIsTPMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODA4MjkwNzQ1MjFaFw0x ODExMjcwNzQ1MjFaMBMxETAPBgNVBAMTCGstc3RyLmRlMIIBIjANBgkqhkiG9w0B AQEFAAOCAQ8AMIIBCgKCAQEA41AC37VNvR2C9N6GqzbTMYLog61UObYANOiciQA5 Ov8eVdGynn3AH+TfMfS5RwY2YdiS+PTWjGx/rSEys3k/cMDKU/8XmGw8Dss7mhKe 0RtjUQ+FwbjG/rYbUrDyUPJWbSZnwLyg/vcMoUJjMAJK4wV+jRf1p6rReFQHMpVK B59Xc2vg+PjdYxeXX/940JldzladWNZXpp0gWf6k2es2uGTD0rgxv1D/jGxgDCyU gEgKEex0g/KlAN4WGb6WeXddWv1RatGOCC8+xkZ3B8cncHgLWnFPZFSxlbkyJPW0 t4CLmPJU8tRaU7B2CN1w8OHLNyGzws8DqT43wJoA6HqvQQIDAQABo4IDMDCCAyww DgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAM BgNVHRMBAf8EAjAAMB0GA1UdDgQWBBT29RsBbYR0kUSjvYP5SpEN7a8N3TAfBgNV HSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEFBQcBAQRjMGEwLgYI KwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5jcnlwdC5vcmcwLwYI KwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5jcnlwdC5vcmcvMDMG A1UdEQQsMCqCCGstc3RyLmRlghB3ZWJtYWlsLmstc3RyLmRlggx3d3cuay1zdHIu ZGUwgf4GA1UdIASB9jCB8zAIBgZngQwBAgEwgeYGCysGAQQBgt8TAQEBMIHWMCYG CCsGAQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCBqwYIKwYBBQUH AgIwgZ4MgZtUaGlzIENlcnRpZmljYXRlIG1heSBvbmx5IGJlIHJlbGllZCB1cG9u IGJ5IFJlbHlpbmcgUGFydGllcyBhbmQgb25seSBpbiBhY2NvcmRhbmNlIHdpdGgg dGhlIENlcnRpZmljYXRlIFBvbGljeSBmb3VuZCBhdCBodHRwczovL2xldHNlbmNy eXB0Lm9yZy9yZXBvc2l0b3J5LzCCAQQGCisGAQQB1nkCBAIEgfUEgfIA8AB3AMEW SuCnctLUOS3ICsEHcNTwxJvemRpIQMH6B1Fk9jNgAAABZYTbyyYAAAQDAEgwRgIh AIny7FqgCAxYqZJJQ4aS1f3G87a/6aMyIvovi6P5JKR4AiEAvsNwy9niu3bq57h2 ovzqupQtHR18AzsVxkPBtOnhkwUAdQApPFGWVMg5ZbqqUPxYB9S3b79Yeily3KTD DPTlRUf0eAAAAWWE28s+AAAEAwBGMEQCIAhI9GkLPNsVFTlNVLJeJccD0Ze2Sz5c Wiz2Y73T1modAiAdTQS4+qmTz7XjjzBjYkpj86Q8NOBnQtscYDbqZRsrFTANBgkq hkiG9w0BAQsFAAOCAQEAYFj0gseOlpfF2dJmcmFyle4o6iF/gfj2LcWhE6Ocfzf+ 7RWx0Yz4HEgebXs6cOzrvJRLpfZ64sLahF+rclGGAoaPlqyvcTXVNZ8yQV7N6Pvu 2JaqiNKRQ1TkwzaqTDAW28T2lfHD9emoRUgfrhh05ut61nR1AO8sXN6VAI5skmIZ vWliNQXr2KYIzEJx0KQ+RbYZPQe52QNxeOYUecopjjWttiks3QGWvoqVNpuuA/QM hPOsk494xeD9PKt8tp+Aax6SRqKXEYc0dSoSWZNj6Dl2hSHT0vCWKsALc6hWYwSL BC9ep/WTsiYIe7ftNkT8Fw5eW/BrJCb0tBvARNBReQ== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA41AC37VNvR2C9N6GqzbT MYLog61UObYANOiciQA5Ov8eVdGynn3AH+TfMfS5RwY2YdiS+PTWjGx/rSEys3k/ cMDKU/8XmGw8Dss7mhKe0RtjUQ+FwbjG/rYbUrDyUPJWbSZnwLyg/vcMoUJjMAJK 4wV+jRf1p6rReFQHMpVKB59Xc2vg+PjdYxeXX/940JldzladWNZXpp0gWf6k2es2 uGTD0rgxv1D/jGxgDCyUgEgKEex0g/KlAN4WGb6WeXddWv1RatGOCC8+xkZ3B8cn cHgLWnFPZFSxlbkyJPW0t4CLmPJU8tRaU7B2CN1w8OHLNyGzws8DqT43wJoA6Hqv QQIDAQAB -----END PUBLIC KEY-----
ASN.1 decoded
[c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2 . . . . . . . . [c:0|t:2|false] INTEGER 298048523719363606714060424252128718144719 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-08-29 07:45:21 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-11-27 07:45:21 +0000 UTC . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'k-str.de' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption) . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 28695550233352257930179586066018119965377497839148800146481644192573025365284781767804619204285652407189789196768444289905174187807929325973687653719227220528683125403863221100371145655128585977016588477938615077302214304352881586484746615277009447971022292252228543083032770318048326047285511097047469173638216143431199426587190952683916731519825875975236671459679733563646617506613547618335164320953785166836794232170281175156689557610689273666239744261661089941594228087943993626728304865577276583664447054739194337444568634591673494003943142876230776047735025907085323980401128889237349944552508957504716689551169 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537 . . . . . . . . [c:2|t:3|true] ORAddress . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits) 05a0 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) f6f51b016d84749144a3bd83f94a910dedaf0ddd . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (99 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (44 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'k-str.de' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmail.k-str.de' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.k-str.de' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007700c1164ae0a772d2d4392dc80ac10770d4f0c49bde991a4840c1fa075164f633600000016584dbcb26000004030048304602210089f2ec5aa0080c58a99249438692d5fdc6f3b6bfe9a33222fa2f8ba3f924a478022100bec370cbd9e2bb76eae7b876a2fceaba942d1d1d7c033b15c643c1b4e9e19305007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016584dbcb3e000004030046304402200848f4690b3cdb1515394d54b25e25c703d197b64b3e5c5a2cf663bdd3d66a1d02201d4d04b8faa993cfb5e38f3063624a63f3a43c34e06742db1c6036ea651b2b15 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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