elektro-placzek.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:4a:16:cc:79:22:bd:e2:08:47:6d:49:b4:08:6f:81:ac:bd 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): 03:4a:16:cc:79:22:bd:e2:08:47:6d:49:b4:08:6f:81:ac:bd
Serial Number (int): 286548057648820680980726625049668827065533
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 37:5d:58:6e:50:a7:56:0a:68:6d:cb:09:b2:f1:4c:01:bd:2c:f3:43
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 5d:22:16:d7:bd:31:b3:1e:db:fd:d1:d5:5e:fb:48:3e:ad:4a:4c:05
Fingerprint (sha256): 74:a5:e8:61:38:62:42:72:e5:37:9e:ee:40:77:52:c8:28:18:64:5e:25:2d:0c:fd:5e:91:ee:93:87:ef:15:c2

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqdqT7qbO4Pxlu8kTW1e4
H7ROr3oPrcYCiUsygAiCqUw3SKnnrRDSkglAgZdnNgQ8QsVqwOzvzH7bUTYbTaU9
pdOYxWzXhmfdqaVD4BN46YXDCJN7/TVgtCW//6bCSRo1Noi+H5RbKvPH/uRAHKLA
Chi2KcwGp4CN0eLjZ5U6IrqKYfikriZ6rchUdp2vFvHcKTNPkrQFBNsWap7L50rg
BJ1MeGdNM8xFgWh0hFiDafOOC/VQ39HHpRz715yHloXRs9Io4CUzUbYJ4eu7G8k6
JYZQ5c8rdS8UgBDiBfJ4Eg4ua2QEY4zsbHaQ4uPFE5T6iAhQRT1OmOd4JxeqkXxE
VQIDAQAB
-----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 286548057648820680980726625049668827065533
 . . . . . . . . [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 2019-09-23 14:52:05 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-12-22 14:52:05 +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 21442058299363135741514106411535181130669439911534289392058868769880766212618655921743995441403284726406907462849614212821613194922407898254536731082481850382858524808621972306699084429745924734850733415361876093072252028083255087824782962651609183719707138425986224346840683296782069782631152664319803353881713520662369245843748385345841090887574410500977927265100514532779134687989371871263480941447583235906868969471999877404239858708965948621063393837604429019345271576541851687258297111613443669448493525934500942174358831172258016027745849045094404198786991017701753780204411235369732931231639787619571233211477
 . . . . . . . . . . . . . . . . . . . . [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)
							375d586e50a7560a686dcb09b2f14c01bd2cf343
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016d5ed2a47900000403004630440220171bee1cce10227ea4bd2f26f64fee8b902afac391e5a5a18046f6a76a38cbb002200754688e32e1c774298e4a63e64d873c3064dcb331fd279ca5e7bda4802a887000750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016d5ed2a286000004030046304402202fbb9194328b3b0f742eab928f9887973e46db1d4269c9e9efbed5be61b7d8e4022032d22e0395e9fdcd89f597d11abd9041a400e791a499f67dd265df5608fbee17
 . . . . [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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