www.kncar.cz
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:bb:b5:af:2b:22:57:a0:39:52:57:d7:83:55:81:8e:78:a7 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:bb:b5:af:2b:22:57:a0:39:52:57:d7:83:55:81:8e:78:a7Serial Number (int): 325211160203548035352539595291484828367015
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 32:e3:98:98:63:0e:32:15:d3:c6:50:2d:67:a5:91:04:1f:b3:8e:08
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 07:dc:a8:bb:c3:31:bd:66:10:e3:8a:f2:20:3e:f9:f0:3c:1d:ac:e7
Fingerprint (sha256): bd:ea:5c:e5:ac:0e:1d:8e:49:50:ee:5f:d9:dd:48:b3:1e:2b:f3:37:3f:47:15:e7:6a:e1:4e:ec:83:4a:ea:f3
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----- MIIGWjCCBUKgAwIBAgISA7u1rysiV6A5UlfXg1WBjninMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xODExMTkxOTQzNDNaFw0x OTAyMTcxOTQzNDNaMBcxFTATBgNVBAMTDHd3dy5rbmNhci5jejCCAiIwDQYJKoZI hvcNAQEBBQADggIPADCCAgoCggIBALqwe/dpsCfbzK5wEx4hZTMGdBQ2BBKHHhDH c0cLrRxccjJjCx/TchyRk3lhRq6qFN3jifxJce2+xByxLHV9B0EG/pb7maLXFzmd FCWHR0pq2l9gI/3zBEcpqpX14i11mivnWvNB0IeMFrfapT/nJAlgzutNwRO7/UVB 6b+bCRyyYpGlxL1tgQezrFDtSvNBjeyDQqWfAnqG+Pe/6Sc4RxOnotbTpBTOwNEb BRozGlUJCnziOS322tQL1dr6zEHS69t4SkIgdILh8f2yuUwb3v0ny2unM8UfbYwU 2Tm2Ii9r0zCgi+G+LuAtg3xrcrbW5pi9xDviReapPjRbObBsC1mk6jzBSY4rnYy8 kKzyHX0lW7T+v3UdVsaA9xGqfgKRDEuNQsqiG94c+wVcKd7ZW8kO0548wl6km2cJ F287J+ThUfdrYYWXcUhngfomb9gpabQEA9r/OvpUiaKS+SIDnjPMgtinLytuJwnc CxkRc1uj2AJAR70F1BbFNHJ6lJ4OPFeyYEiNlMa+olZWtR5Lwv5wzRv7lVyinCNP IqyRYFJs6nNeIBuuimcJ1AK6AX6bHaG/1Hp5EIZj2NW6DDQkjChccQ9Z6+WKnRVB pSANyUOOuCkOoC8rNAzCYEi0wmVT2ik48jqvecYtlKyyjp5mtu+nj2wHArbhjNu+ Ub4VN/QfAgMBAAGjggJrMIICZzAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFDLjmJhj DjIV08ZQLWelkQQfs44IMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyh MG8GCCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgz LmxldHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgz LmxldHNlbmNyeXB0Lm9yZy8wIQYDVR0RBBowGIIIa25jYXIuY3qCDHd3dy5rbmNh ci5jejBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsG AQUFBwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQQGCisGAQQB1nkC BAIEgfUEgfIA8AB2AHR+2oMxrTMQkSGcziVPQnDCv/1eQiAIxjc1eeYQe8xWAAAB Zy228xkAAAQDAEcwRQIhANycvd1GELrAJWTEX8ECYhAT2BxFdNY5gnH73NS9uiai AiAmc8+BCepuKLdq01hKtfgv2RBjgTOxbNWydFzFc8OTIQB2AGPy283oO8wszwty hCdXazOkjWF3j711pjixx2hUS9iNAAABZy2283EAAAQDAEcwRQIhAKwth4dOzKzS ELjzDeL7GmIcDsFj4jtsgHj+SEtwLTruAiA6jYIf7k/w8bCYEjj+Kobq2SLCwn52 EdtQG1G5SExZCDANBgkqhkiG9w0BAQsFAAOCAQEAhYaOe3lzoxeAwZY66b7BLKNW t5hqr+R2SUPhe+SbkM2T95chqUHk9CbkqCzpsHhmXofUjIyrpTbJiUsOKxJkwGoa /v2grzBVjrjJmjC3DaLvozbXOrT64vYf4use3oER4ACotudD3h7nZsl1osx5vNwG 9d9e+PUzWm6C2hdPKHGAy/iU2z0BV3X/V2ylZ98Bks2CqjNyd6rudCDvrxT9DhsR 9Ci3GrF/CnD5VlyVRTeBzGDYuhZ5gkUlvadfh9RZv6us6CuOIhqcFHo3t0U0QtAi FKO5qfKOznIdm5mYu+MjVu8k5BdKBRFjvjpEZULl/QQQl3J5TBxuQfRl4jWEUA== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAurB792mwJ9vMrnATHiFl MwZ0FDYEEoceEMdzRwutHFxyMmMLH9NyHJGTeWFGrqoU3eOJ/Elx7b7EHLEsdX0H QQb+lvuZotcXOZ0UJYdHSmraX2Aj/fMERymqlfXiLXWaK+da80HQh4wWt9qlP+ck CWDO603BE7v9RUHpv5sJHLJikaXEvW2BB7OsUO1K80GN7INCpZ8Ceob497/pJzhH E6ei1tOkFM7A0RsFGjMaVQkKfOI5Lfba1AvV2vrMQdLr23hKQiB0guHx/bK5TBve /SfLa6czxR9tjBTZObYiL2vTMKCL4b4u4C2DfGtyttbmmL3EO+JF5qk+NFs5sGwL WaTqPMFJjiudjLyQrPIdfSVbtP6/dR1WxoD3Eap+ApEMS41CyqIb3hz7BVwp3tlb yQ7TnjzCXqSbZwkXbzsn5OFR92thhZdxSGeB+iZv2ClptAQD2v86+lSJopL5IgOe M8yC2KcvK24nCdwLGRFzW6PYAkBHvQXUFsU0cnqUng48V7JgSI2Uxr6iVla1HkvC /nDNG/uVXKKcI08irJFgUmzqc14gG66KZwnUAroBfpsdob/UenkQhmPY1boMNCSM KFxxD1nr5YqdFUGlIA3JQ464KQ6gLys0DMJgSLTCZVPaKTjyOq95xi2UrLKOnma2 76ePbAcCtuGM275RvhU39B8CAwEAAQ== -----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 325211160203548035352539595291484828367015 . . . . . . . . [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 2018-11-19 19:43:43 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-02-17 19:43:43 +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 761626268913512608777124303467366927467082026925846888216461335431257007738181691636019382488188487572043630460523997258820973660610327194238191187202555738185437795167905780742100803548110887805350316649421360362014453435388921726302147181759864308615430176534024277406913434052395743579545863633741402484874878267606999489493218722649409313471724089954309519892541686475230413911706802219254040663928985322254904870494489302111945890530070677006772430968225492079904900586938708461886584360178922199216789676444737293667845300347093694610906809928552106379990660675897986905366464500722246202558515599643230834680741737314874375669585828698013831225000180244282546111106286702641720976710013640023091855857732222057078011533985818707661742792991881334204382448373801730050541811262437288476419162397141239585964342744902515314719008594490330296846508520654848169322765461115118373944150558253400182574566497690059179098290431981463879527234323576283700230759252982613412249441359300118158869604620325674291048518662727961933059835301543086788196459394203444951844111891495199875604493020868803191141854327018266466437941295180318015751925589377160685083286942655330347693694133820112133601664952414286359513307186943899894642373663 . . . . . . . . . . . . . . . . . . . . [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) 32e39898630e3215d3c6502d67a591041fb38e08 . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc56000001672db6f3190000040300473045022100dc9cbddd4610bac02564c45fc102621013d81c4574d6398271fbdcd4bdba26a202202673cf8109ea6e28b76ad3584ab5f82fd910638133b16cd5b2745cc573c3932100760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d000001672db6f3710000040300473045022100ac2d87874eccacd210b8f30de2fb1a621c0ec163e23b6c8078fe484b702d3aee02203a8d821fee4ff0f1b0981238fe2a86ead922c2c27e7611db501b51b9484c5908 . . . . [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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