www.opportunity.cz

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:f7:bb:1e:84:bb:6f:d4:a5:12:f8:54:cc:57:c7:f6:f2:f7 was issued on by Let's Encrypt.

With 4 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.opportunity.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:f7:bb:1e:84:bb:6f:d4:a5:12:f8:54:cc:57:c7:f6:f2:f7
Serial Number (int): 345635326520998419708479354292165483623159
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 0b:f1:45:1a:00:21:17:28:d7:63:06:04:4a:d3:75:9e:1b:e9:0c:1b
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): bd:53:e5:36:c7:4b:bc:97:a8:27:09:d6:8d:47:d9:b5:68:18:c8:49
Fingerprint (sha256): b5:d8:26:6f:dc:d9:81:4e:60:f8:f5:7e:12:20:e3:33:13:aa:33:83:4d:aa:73:01:f5:95:7c:af:0d:1f:f5:17

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.opportunity.cz

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.opportunity.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

oportunity.cz
opportunity.cz
www.oportunity.cz
www.opportunity.cz

Other certificates including the domain name opportunity.cz

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.opportunity.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 345635326520998419708479354292165483623159
 . . . . . . . . [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 2018-02-02 06:34:52 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-05-03 06:34:52 +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.opportunity.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 825042856252430426492138763902678499522905299065549686461045087729176069342891094050685801868540942502048956926119769224670031226957826246272596954393014772288406482343520375802741644874218850196397609978633932119505997776229794167177441188664242074919368272945321325032321670602262802778345950552937405481559030300619700739553716432036312832545669958012961829396154306914744092371314866394882835121962637789764321618425400776993238206718202987146896661212937018279001219219340200851198560229066970305951381891847922790731642414296441777428053324545131692546762007930645303868251921420546945761752076013052764163360624941861511262901215373350075845206949921110022483433370861454238866234817484885646406018744733512150647817510064274433985797055750242389157098098007571068587895367891133818764041544012172788964770160082016595554154343411604725738773372786681967777208623723462901110923383725308945723702743547671618803425431029927969966748274405191884462178622578304661448281129438047036811638003266887788359423777529947194054987623801918263575023941985612592293930939604253875618391107784279372812977754897038033519240639268683450474947075974531542997246981931754239692083894980121958975000957114631659402044847507727308839110175231
 . . . . . . . . . . . . . . . . . . . . [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)
							0bf1451a00211728d76306044ad3759e1be90c1b
 . . . . . . . . . . . . . . . . [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 (72 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'oportunity.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'opportunity.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.oportunity.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.opportunity.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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