www.kncar.cz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:d3:c0:9d:c4:30:39:a3:14:d6:7f:c4:e7:e5:fb:c2:f1:19 was issued on by Let's Encrypt.
With 2 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=www.kncar.cz
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:d3:c0:9d:c4:30:39:a3:14:d6:7f:c4:e7:e5:fb:c2:f1:19Serial Number (int): 333392468160569321461463595698502701871385
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 5f:5c:36:15:66:94:61:54:88:c7:fd:9e:8c:3a:f0:1b:49:d6:f6:c0
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 64:5f:16:8d:35:dd:bb:0f:b4:eb:60:3c:dd:18:01:5a:57:85:20:4e
Fingerprint (sha256): 72:74:09:30:82:1b:c8:3d:87:b5:57:4a:33:76:fd:84:8a:00:f4:03:51:a7:83:f0:ff:c0:b1:4b:12:d7:65:73
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.kncar.cz
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.kncar.cz
Public Key Algorithm
RSA
Key Size
4096
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
kncar.cz
www.kncar.cz
www.kncar.cz
Other certificates including the domain name kncar.cz
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.kncar.cz in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGXDCCBUSgAwIBAgISA9PAncQwOaMU1n/E5+X7wvEZMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTAxMjMxNTExNTNaFw0x OTA0MjMxNTExNTNaMBcxFTATBgNVBAMTDHd3dy5rbmNhci5jejCCAiIwDQYJKoZI hvcNAQEBBQADggIPADCCAgoCggIBAMFLsK8utJ7eCy1f5pIl+Rf28FBTeyEGUt5V /s6XRjp0EZoSs3bOqiMqEwlM1ER+61wiIx8EtIOge67eavuqGJOlYsigBlCrgK1c cdBHSFkxdsJdZgQ8JsZwZ1M2UNSfEPxXXxCzAduk8dvNfo9JLf4MEP8bAV+qwI5v HJj8k8kN1g/UjZjqDReDj6M5M11darlf6DS7YW3sVYwcYdvuGQIoCjCsKHNH8WCG th1xWmwiGc7xPAiZ54IeJOMfIusTM86unJMao69UIJWE6criPADvFcsN/GszDKkd KrYsCuVKLZqy2pdRMx9AWuJ0aiWH+KtDTnGjT3LN+BPG8/yWLTQCvdD0anDwgfcb yTeKsZQ0XNrXp5BX7I0KFiI0VtG79ZyQJH/WH/ctuhYQ/nxoAVVlBUZfGlk/sZI1 y7W5i4JiGSgahafrsENhSUBysT4JQbrJf/CZNLgQa819cRhL4iNlilJlw73eaD7d j5rHdF1CwatkW9nySk4lniNzAyiKDu+2OswBKdnjbIqy77Q/izffjtIdqE2eYtl7 GMZuUI818oY168gwzbQzbs6s7bKQKZz1reQBY0FVXbaruV3TbinwkU5RIPfgfiiO RJvkjQzVWxkGGw5NZz1yd4mzhmS9frDIGH41KA41f7UPiBb9fMI7zj39XPUTkOGo yoDd5SePAgMBAAGjggJtMIICaTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFF9cNhVm lGFUiMf9now68BtJ1vbAMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyh MG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgz LmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgz LmxldHNlbmNyeXB0Lm9yZy8wIQYDVR0RBBowGIIIa25jYXIuY3qCDHd3dy5rbmNh ci5jejBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQYGCisGAQQB1nkC BAIEgfcEgfQA8gB3AHR+2oMxrTMQkSGcziVPQnDCv/1eQiAIxjc1eeYQe8xWAAAB aHt7br4AAAQDAEgwRgIhAMliJxB5bJmzFnRbtYtqc61MamcLTNQ+Z/sqXGFxjoA4 AiEAx8YNXVPkDdQNwXFUrVFQ7haGY/u+Na9B6atX7LbynHwAdwApPFGWVMg5Zbqq UPxYB9S3b79Yeily3KTDDPTlRUf0eAAAAWh7e28OAAAEAwBIMEYCIQCU1WsRON+k D56JU/oXSDdRt7gTDPk53AXEpKJw01AQyAIhANxn4TXjyww0u63oRE1I7CjzwLYo ZsKtP0UpckEc2CrlMA0GCSqGSIb3DQEBCwUAA4IBAQCOdFnN14KnXcRbUHaIi5NH iGn/R2oMW5jrOZMWFcXH2VVcTRKL6249LAUcV03ZxNmBegc7YynA/Qft0zIuj/jv 15Nj/IrpeUSbse4RT3KnnsV0K4QlE+xy+ZY3jLDMoLbWKFk5ozZxixk63MiB87+r h2tJ0567lWEdiRqwe97igvctiSDSUPEjmDJ8Kd2GcJFfGwsT+IKJIRvmw5w6u0Fa HMFkJLIgLLisSqSRT5tgNA70LXUew9egrCe37BBLL9qA09ALJ+dNRijSHcoSk/aD JP1EeXe+8+IU7+LTyWLFrChMDOTyRl7uAoZ5ihH8OGa464wVtK7OZPlRhitEyYQH -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAwUuwry60nt4LLV/mkiX5 F/bwUFN7IQZS3lX+zpdGOnQRmhKzds6qIyoTCUzURH7rXCIjHwS0g6B7rt5q+6oY k6ViyKAGUKuArVxx0EdIWTF2wl1mBDwmxnBnUzZQ1J8Q/FdfELMB26Tx281+j0kt /gwQ/xsBX6rAjm8cmPyTyQ3WD9SNmOoNF4OPozkzXV1quV/oNLthbexVjBxh2+4Z AigKMKwoc0fxYIa2HXFabCIZzvE8CJnngh4k4x8i6xMzzq6ckxqjr1QglYTpyuI8 AO8Vyw38azMMqR0qtiwK5UotmrLal1EzH0Ba4nRqJYf4q0NOcaNPcs34E8bz/JYt NAK90PRqcPCB9xvJN4qxlDRc2tenkFfsjQoWIjRW0bv1nJAkf9Yf9y26FhD+fGgB VWUFRl8aWT+xkjXLtbmLgmIZKBqFp+uwQ2FJQHKxPglBusl/8Jk0uBBrzX1xGEvi I2WKUmXDvd5oPt2Pmsd0XULBq2Rb2fJKTiWeI3MDKIoO77Y6zAEp2eNsirLvtD+L N9+O0h2oTZ5i2XsYxm5QjzXyhjXryDDNtDNuzqztspApnPWt5AFjQVVdtqu5XdNu KfCRTlEg9+B+KI5Em+SNDNVbGQYbDk1nPXJ3ibOGZL1+sMgYfjUoDjV/tQ+IFv18 wjvOPf1c9ROQ4ajKgN3lJ48CAwEAAQ== -----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 333392468160569321461463595698502701871385 . . . . . . . . [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 2019-01-23 15:11:53 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-04-23 15:11:53 +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 'www.kncar.cz' . . . . . . . . [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 (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 788577512024682992405511036228651857277777648082065564070475207916468252471489928826636059843950359913111644374765891625672516635727441475102918355519522601605635390803276679632732299827190374279469010958315522233946588863183947772944280394871832377353386397830507120046950477740792998305501011052861692834569749983589845772931014727681953832141498792109706092176324125015005749413500744037455451698954917115462008924779502857257220936641513655736741155218793826344444450407208121252581886030774927098576842829784031375849125595485843087290450002513525123635853794770349866844123630287650221040699627238851450112312868019924584266122397859208217408667583242035664421929948532963682384436893457070741838517040874136318012455049515263225969274677698281211724682374335771120065752923983397907490580603698005829981519019190565220535821653629917763976991528915999707522961259301779852889151750844254224862043740638087914205776991957100704425221276233511992267159477967256416934926012849536273316494082472355856048542103629746587731194421875931570369580478030143344910088635999688637986182759639000031944791497035369128359297232793215915880735862034090958488625852728097424496888980671019889325374021153922255460021447457101536542274693007 . . . . . . . . . . . . . . . . . . . . [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) 5f5c36156694615488c7fd9e8c3af01b49d6f6c0 . . . . . . . . . . . . . . . . [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 (26 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kncar.cz' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kncar.cz' . . . . . . . . . . . . . . . . [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 (69 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 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (247 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) 00f2007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc56000001687b7b6ebe0000040300483046022100c9622710796c99b316745bb58b6a73ad4c6a670b4cd43e67fb2a5c61718e8038022100c7c60d5d53e40dd40dc17154ad5150ee168663fbbe35af41e9ab57ecb6f29c7c007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f478000001687b7b6f0e000004030048304602210094d56b1138dfa40f9e8953fa17483751b7b8130cf939dc05c4a4a270d35010c8022100dc67e135e3cb0c34bbade8444d48ec28f3c0b62866c2ad3f452972411cd82ae5 . . . . [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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