www.kncar.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:64:9a:3c:69:27:dd:4a:8a:de:5a:e8:28:e3:6c:2c:ab:0c 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): 03:64:9a:3c:69:27:dd:4a:8a:de:5a:e8:28:e3:6c:2c:ab:0c
Serial Number (int): 295570109269348368445245232142184245668620
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: fc:63:0b:b3:6b:36:a4:c8:ee:36:03:30:c0:10:06:09:fc:f2:5e:3d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 2e:a2:e5:53:5b:a8:59:0e:7f:a2:0c:46:ca:7c:c1:78:90:a6:38:88
Fingerprint (sha256): 63:e0:cb:dd:ad:b5:4a:95:f1:e3:1b:98:d7:79:61:52:c9:15:54:5b:f0:09:1c:2a:4b:64:a8:2c:25:6e:25:3f

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

8 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)
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz
www.kncar.cz

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 295570109269348368445245232142184245668620
 . . . . . . . . [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 2017-11-29 06:20:27 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-02-27 06:20:27 +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 682609803326403668981137677565961475939541341128602728953240159160806182710821365745070622147007871138409375361137917097676713279083444348507043181549125167601062266158982871393390356467033362210586101315196580381238008536534487126414972352828613740779083121959427046958470075850449197566780617745554063186094917018762675014085319030730392752584346944745182408772330133392518253897761081493717398552575693485118362678301023886481904033811983898367391553425768578454772715501260200522131389529243222443104640805846856243987642995738110845225962854231375352785764780976037753306898156164255776459397127683553917693866605564267733523751222551025084530242770596426508194494223640291697184029298969105991571352898840249155387911673376022677304989017626896955085046970926137382040728198122638376291508109336253309812234133250277915719456094949791106991279564434598666341301312734129342787997060818874800323486647393316826670424541020662303440568365835811086260186862773324244324908232150629064834690401964215817649533334773525833567599121564329080276906845050858168936158592428925263002329530960088762869392396844728037462058903357753810630604376183740231416690976102401334264051279775475882923714663091058589680017284475815426942608599887
 . . . . . . . . . . . . . . . . . . . . [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)
							fc630bb36b36a4c8ee360330c0100609fcf25e3d
 . . . . . . . . . . . . . . . . [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 (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 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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