www.justjavascript.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:e9:09:6f:06:68:3f:f0:bf:c4:8f:b4:a2:b8:c8:f1:58:64 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.justjavascript.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:e9:09:6f:06:68:3f:f0:bf:c4:8f:b4:a2:b8:c8:f1:58:64
Serial Number (int): 340635188814726738662367764238485783926884
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 30:c2:db:98:a0:14:3d:f8:5b:e8:04:14:c2:e3:c2:2e:0b:4c:8d:c5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): c8:1a:64:a1:20:f6:34:d4:69:dd:53:41:f0:7e:20:b7:12:49:38:4b
Fingerprint (sha256): bd:ef:7d:e8:de:d9:9f:cf:6b:1c:01:85:e0:7c:2f:ab:ca:3a:45:78:30:f9:a7:ae:eb:97:7e:04:e6:ec:18:4f

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.justjavascript.cz

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.justjavascript.cz

Public Key Algorithm

RSA

Key Size

2048

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

justjavascript.cz
www.justjavascript.cz

Other certificates including the domain name justjavascript.cz

(limited to 100 certificates)
justjavascript.cz
justjavascript.cz
www.justjavascript.cz
justjavascript.cz
justjavascript.cz
justjavascript.cz
justjavascript.cz
www.justjavascript.cz
justjavascript.cz
www.justjavascript.cz
www.justjavascript.cz
justjavascript.cz
justjavascript.cz
justjavascript.cz
www.justjavascript.cz
justjavascript.cz
justjavascript.cz
justjavascript.cz

Certificate

The complete raw certificate details for www.justjavascript.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAujj0/hALKC0j6WJFbnfP
UPaXe5nVPZ+YpmZsGw2AnbSJwM7Tu1wTQwtMcKoD4NHtBrmNr0dxvhOwgkrM6a6I
a3M3ZJxwdgvqr7QoWfxz+OGJByZ4a6fyOTVDN2X09fO2ICtij7Vh+NzdISvQmD+K
SFSQn05aocSpmErjIceFR3IGoYFXNckPHjwD0HAWqg5mw06qinsrGQEyI2A0LC5H
4gCz7EUlE8WM6wdm1h86+jKG2Dj6ykDCpycND3awHxBWZHH6tchFRmaWNooH331j
xfEHgqMHxSmi1Wq4GbrTMILoqQLQJLVsyP6qFiqWUa53lb+JZOi7sc/PyxTEIAHs
iQIDAQAB
-----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 340635188814726738662367764238485783926884
 . . . . . . . . [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 2018-08-20 18:33:06 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-11-18 18:33:06 +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.justjavascript.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 23508411268019441447132150758803225267745213723767430076364874871156445388965588254339957896480824768550509587953058053835844002129332176746265672176195228540172273411485298043620495987506815548322065377439977738526374022139801129587446187044772863958493459626392507313745675867186823436376238164216434112127967874051035541457382383380110287159241317151685228485179355207684285175549201737532645881235825332228343465245754202989012367568763349087894521919035784129679681325320302238423962763241986880273040869499553367445631645348671766417670270736768348005521987972298349692657807067418827125928846367578790362737801
 . . . . . . . . . . . . . . . . . . . . [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)
							30c2db98a0143df85be80414c2e3c22e0b4c8dc5
 . . . . . . . . . . . . . . . . [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 (44 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'justjavascript.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.justjavascript.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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700db74afeecb29ecb1feca3e716d2ce5b9aabb36f7847183c75d9d4f37b61fbf640000016558d396760000040300483046022100fea09558f0e6047aa93df1213ffc0ce3434fa9610282d464fa44b200400a97d4022100c96dff7d0102c9d68e8be0dba9c08aacf0aeea0f64180434c30dccec29038f94007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016558d396880000040300483046022100b05b1f3db4b1db820ffdb29e47c76ae5d34e5b496cbd53a33e08b92e4891e124022100a40f4123e695726975203c6123c6397b9af839edb2c10f067e320cd6f96928ab
 . . . . [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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