elektro-placzek.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:9a:36:f3:7c:51:ad:64:02:14:15:78:e5:15:d5:97:2f:06 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=elektro-placzek.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:9a:36:f3:7c:51:ad:64:02:14:15:78:e5:15:d5:97:2f:06
Serial Number (int): 313813384862504206559040739703863930990342
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: e5:f9:49:77:88:25:49:ae:ff:4b:2c:c8:3e:21:62:14:63:55:a2:9c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 49:47:51:6f:77:e3:77:0e:b5:0d:54:49:71:67:b7:cc:21:30:6a:53
Fingerprint (sha256): 62:d3:a0:7a:9f:46:84:9e:f5:2c:f4:13:bd:bc:04:91:2f:2f:91:1a:c9:83:f4:f1:b7:b3:1a:58:62:5b:b3:a9

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 elektro-placzek.cz

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for elektro-placzek.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

elektro-placzek.cz
www.elektro-placzek.cz

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elektro-placzek.cz

Certificate

The complete raw certificate details for elektro-placzek.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzPJheQLmDmqF0d0lEjl3
yozBd8wlxDjNVWqi0BBhCGr5toLwpINXTubkCRj5V1KjU6ivAKVz8b6NhIio1K7z
EQCURPKFecffeaQdatNino3QzZuyeTPU/QI+ocdqQDaBFP7ULpFBHiylHOPN7Fuz
0kaHpmSYuObB18yPx+U4gmUPCNB4QzGTdxKI0oG6UwDbIntQbSZ+cPA3TGjWYPGl
1Fscd/qboNEV+6yyTaGITd6Hvm16Zx3DmQJrhmMW6jXzZyWFw5ekxzVPVKkDF+ZK
Jxqpv/UAzE1BlVnnxzUTnraW+wYXV0bN0AqI1R4uTib0QaV8vY3AByHIQU+0v/yK
nwIDAQAB
-----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 313813384862504206559040739703863930990342
 . . . . . . . . [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 2018-11-23 18:19:12 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-02-21 18:19:12 +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 'elektro-placzek.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 25872136616911199477209034047984568862524773166074347313779762585736793041804966909386443266885894039548826168008929433080161083435493276688356993804470441867018143674661443393337732632845163937869317507344646430141187739337551912491349875814894288576342214043186192915247951166167444695742979020467529653651046635425616005942140902515023505885281955296529959983856295593759008113582583999822680838615096754586778379280510043467174024523298345236611541916097161100019285697828352873204677178298734735114825601077948300386777091141753402301906285271860481679928951416637537492684536726636097883626507643704154521373343
 . . . . . . . . . . . . . . . . . . . . [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)
							e5f94977882549aeff4b2cc83e2162146355a29c
 . . . . . . . . . . . . . . . . [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 (46 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'elektro-placzek.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.elektro-placzek.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc56000001674202ffd700000403004730450221008885b0b9f0b9f0f22fb9ba6ff2d5f3a2dcbfe2e6cb8665910d1fbaa12e25da75022034d80a4d0c7835197fe517e8e2071972a36aa3f27c6d389850ea7e06b81516c2007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000167420301e100000403004630440220636ae8c8fcd27322e1179e33855b51ca079fbc73b7cbc091c16a81091fb10cf902206d0ac32eda297d181d1c19fe61d88446c9ae7c6e2313122643b89a995924056d
 . . . . [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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