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:a7
Serial 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.org

Check 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

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-----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==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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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