www.kncar.cz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:41:d7:a1:50:46:6e:30:87:10:90:05:e9:44:12:33:5f:43 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): 03:41:d7:a1:50:46:6e:30:87:10:90:05:e9:44:12:33:5f:43Serial Number (int): 283741833252202562770390387975596864134979
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 53:1b:f0:47:d0:2c:be:73:dc:d1:25:57:b6:d3:c7:f6:43:9a:bf:1d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): b3:01:8c:6c:0b:0e:27:cc:cf:83:a2:9f:90:9e:b2:ad:c2:34:93:81
Fingerprint (sha256): 84:82:f7:03:24:29:16:74:56:c2:98:37:1e:dd:91:0c:5c:6a:65:1d:f3:e7:66:ca:87:c5:80:2c:c8:82:df:a1
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----- MIIGWTCCBUGgAwIBAgISA0HXoVBGbjCHEJAF6UQSM19DMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA1MzAxMDQ4MzJaFw0x OTA4MjgxMDQ4MzJaMBcxFTATBgNVBAMTDHd3dy5rbmNhci5jejCCAiIwDQYJKoZI hvcNAQEBBQADggIPADCCAgoCggIBAJ0iHavLsQtceK7lGkm8KK9clNsoV/ZpevdK 1n15/cQSbo67ZFPEDfeANc+CYdZMa2GUvAELnpn2HYLOsVnhCw/VJL0bTKn3jiv5 ZSPNnrgw9HY+q9L981jBf6AHnbIzsSpTS5eAFywHI9R8H5XTW1nvoQuLUUHVXvwS 1TW7BrlNN3ZvPZ/3b0flmLhPATqPF791b5VdrC1gBJiwbhzHojlv5gO5/sLgTkCy oOzAb2aDLZiDLpTQAPVXIQc96Y4sv/X72bBnua7Ckyr0fcKaA2eYhO+V/82cARfD ik70kJ9j6SyIfZncqtlCmOhjJavNw6KcI6ptxFyUuc09yBVErrV/gSGtjMQX2rh9 NcnojqfZ2AwRgbjKgH6thegf9EHXAjd/PnX9l4nvpE32o+Tj1nGXyj/cHdWrM+Do ZT9m3o4RMzKDlX0CEP3qrxORNgLbVemN5rjw3x+ua/2df3++Erb678+Wnf3R1f2g afeNh6i64N/RPyrIxy44/meGAECj1e+Z8izhFh44nQErT3MB9JVUL2I6XYTyiyiE IW8Mv46lLGHsIrsARHcUnvNhY5E+9v7NCynWOH1CbNtW1xvL31vWFT7TsfmCg0oL QcgQU2p9aeCGhEq6Qk9op3yNBberKjsEo5EGtl97SW0d5ea3StQglS/9cStrqfqh puArQNRHAgMBAAGjggJqMIICZjAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFFMb8EfQ LL5z3NElV7bTx/ZDmr8dMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyh MG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgz LmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgz LmxldHNlbmNyeXB0Lm9yZy8wIQYDVR0RBBowGIIIa25jYXIuY3qCDHd3dy5rbmNh ci5jejBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkC BAIEgfQEgfEA7wB2AHR+2oMxrTMQkSGcziVPQnDCv/1eQiAIxjc1eeYQe8xWAAAB awiR+i8AAAQDAEcwRQIhAMNVy3hOIAjHB66A6R9Je7u1AQ7NHZuc+4H0DprW1ZMQ AiBRmkDJohsgtbUERbXzkYnMUHa1dRsPmipt/E5mJidoHAB1AGPy283oO8wszwty hCdXazOkjWF3j711pjixx2hUS9iNAAABawiR+kIAAAQDAEYwRAIgNBgSiKxifTNX M23mE/mzXNvXVZxwH3U7StPAy9SbyaYCIDNYwDc/qsmrcU69lmMWG4L17Zbcr1km 6SGFz0bEbGRqMA0GCSqGSIb3DQEBCwUAA4IBAQAbHHqOuOPJKB/ylbFtGku5Kiex bnvjd2W2B3V1kg86QprpdG7zipur3D3qWY17KBPmZeHJVVGdw1I3YvryQlwzzPEL xM/TbweEBHDEUwU3vQYicz/f64nue6LVTozNvtX0hzElqwma4LDXGkwbi3dm9OE5 0LpJAvzdi8R7Nes2Dv1uGYgGjV2X2HQJTfD5Czt94gKRnfQPRbzXASaefHvkDxJf 0q07zMa2L3D1CfFU727U+g5vl5lNRB6pP0l31xnOpAIVRwQv9KxiQs+0+6SgtErr lKenrI1cY9W8YJcJFEVsjK5uaY1aCleEXi1e3SgPh8jtq2xPZx6a23SiVZ1g -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAnSIdq8uxC1x4ruUaSbwo r1yU2yhX9ml690rWfXn9xBJujrtkU8QN94A1z4Jh1kxrYZS8AQuemfYdgs6xWeEL D9UkvRtMqfeOK/llI82euDD0dj6r0v3zWMF/oAedsjOxKlNLl4AXLAcj1HwfldNb We+hC4tRQdVe/BLVNbsGuU03dm89n/dvR+WYuE8BOo8Xv3VvlV2sLWAEmLBuHMei OW/mA7n+wuBOQLKg7MBvZoMtmIMulNAA9VchBz3pjiy/9fvZsGe5rsKTKvR9wpoD Z5iE75X/zZwBF8OKTvSQn2PpLIh9mdyq2UKY6GMlq83Dopwjqm3EXJS5zT3IFUSu tX+BIa2MxBfauH01yeiOp9nYDBGBuMqAfq2F6B/0QdcCN38+df2Xie+kTfaj5OPW cZfKP9wd1asz4OhlP2bejhEzMoOVfQIQ/eqvE5E2AttV6Y3muPDfH65r/Z1/f74S tvrvz5ad/dHV/aBp942HqLrg39E/KsjHLjj+Z4YAQKPV75nyLOEWHjidAStPcwH0 lVQvYjpdhPKLKIQhbwy/jqUsYewiuwBEdxSe82FjkT72/s0LKdY4fUJs21bXG8vf W9YVPtOx+YKDSgtByBBTan1p4IaESrpCT2infI0Ft6sqOwSjkQa2X3tJbR3l5rdK 1CCVL/1xK2up+qGm4CtA1EcCAwEAAQ== -----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 283741833252202562770390387975596864134979 . . . . . . . . [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 2019-05-30 10:48:32 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-28 10:48:32 +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 641047793444184600016044216883716300608453190605925362567534193001100857494502150574876184474375306310049331352092134555513026550171584417706476741381600956211164774075808230377661268442073394317471660134996869102892275808344427534697993857826313407196360875312009026512719102176229963853907409662626740871044924127795101454963986878488094964467143455131676377744775804711109511036147732347880690669340929636422175976357151889933743497206483654251431988269476140275724100350837031073368063627587248079590983293275340048001769927992064821938996607029502904043768747006770568277659043113717807207747431450074784302922920423710541318021374826826683605006496233053858021788991078356841117713355180788960336283364116171793334578177290323418221249230028357491444493980044311548891053138350839378447480265708792934945089539522840579824218440527969699295928084888962863146822474034141346824275050147008184069567476386685851431808650579848793593044091855900042125938227478653827601938974386050093731058814968666369470688333966233954439421204249372730377509284521404832353671047580038476886026142780024250135256103817502529145143487181633028082438487301310893938363037119074699561410598126928133118569000983912954528037117566953625418794587207 . . . . . . . . . . . . . . . . . . . . [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) 531bf047d02cbe73dcd12557b6d3c7f6439abf1d . . . . . . . . . . . . . . . . [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 (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016b0891fa2f0000040300473045022100c355cb784e2008c707ae80e91f497bbbb5010ecd1d9b9cfb81f40e9ad6d593100220519a40c9a21b20b5b50445b5f39189cc5076b5751b0f9a2a6dfc4e662627681c00750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016b0891fa420000040300463044022034181288ac627d3357336de613f9b35cdbd7559c701f753b4ad3c0cbd49bc9a602203358c0373faac9ab714ebd9663161b82f5ed96dcaf5926e92185cf46c46c646a . . . . [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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