www.justjavascript.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:2f:a2:87:8c:fd:bb:3c:c0:29:d6:a3:a2:b3:be:ef:d1:61 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): 03:2f:a2:87:8c:fd:bb:3c:c0:29:d6:a3:a2:b3:be:ef:d1:61
Serial Number (int): 277546167795597923062985226189476948070753
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 8c:43:1d:ef:90:4b:dc:5a:16:ab:85:38:e2:dc:0d:5b:99:f7:83:86
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): e6:fd:78:53:f6:4b:f2:2a:52:d6:99:06:41:95:d9:36:63:f7:46:77
Fingerprint (sha256): 77:d1:26:5d:95:01:1f:09:ed:38:8f:a1:0a:2f:a0:4c:09:38:09:b4:1e:7d:db:c8:cc:c3:25:f8:35:d6:6f:0b

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAw3dNwIPjssnbzx8FBoyp
pmgnAc+nxMnhuw8J9WqgEo6KYgfvPorpfj76m6AUPePRH6ZYqGE4lVDnEYW5GfxE
gPI+C4trRutXmVJbV2e0padi0X1JIJ0lBLXSCuKSeVMfFq+aoffKejZBCPHL9FgE
09/1JRVIh4lAu9K+jhAEGJ1Og2Q16Gmao01HlrE3y6ihD5TE300exSi7rdDAmVgH
XT42C7ITJ7TbXBPr3arndfFRldmCOzWzkDu8/28SzGk7E/oraANwamcBDz6U44yU
GAj+YKpMxp1tUFv19oK71MQocbrWUjYCx5+DvyxNzG2KUnv6VoJiDgOq2lgNhQkg
EwIDAQAB
-----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 277546167795597923062985226189476948070753
 . . . . . . . . [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 2018-12-30 19:37:06 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-03-30 19:37:06 +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 24675300324777127336442169029355452677425887742421096996387289837716837837080481237959984484430833547444594461802697855733607118816279247970660348356369779768632613586372612847923242885622883383883753403952328102482169215965289014799995139005617715381244506680510217063084947622445681650144372489215879887103294163397611538548483955146302042615463787511085812107723947230155971923784412596205760430252214193261636214521961112377165878531357033704034133173979494863557344083388780007664604209707650625596771914145062468253808287955023661346771903325834214940873436657046886236958931465770575738365921391928428030664723
 . . . . . . . . . . . . . . . . . . . . [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)
							8c431def904bdc5a16ab8538e2dc0d5b99f78386
 . . . . . . . . . . . . . . . . [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 (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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016800d59eb7000004030047304502207bf9bb3dfd61e7c454b95c36a173e6083f21f9921eadb9f6ddf8a4601fafdbbf022100b63a203d8020370687992bf34549b53b724c41b6bd01a329c621103cc8bc705300770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016800d5a1000000040300483046022100904b25f7d0fae4d8356d2600874e3b0fc8b3c62a2c992ba59694ccc040807da1022100cd6bec465156d56351b45c5eb1057b7ccbd13b08d5dba886f007fd69bd67f88e
 . . . . [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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