www.opportunity.cz

Issued by R3

About this certificate

This digital certificate with serial number 03:49:bf:b6:3d:6c:a3:89:04:8c:bc:6c:c1:16:71:64:ef:e6 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): 03:49:bf:b6:3d:6c:a3:89:04:8c:bc:6c:c1:16:71:64:ef:e6
Serial Number (int): 286432299371566659118267262861323348013030
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f7:50:86:87:9a:9c:a1:30:1d:31:05:f3:f7:6c:fb:9c:67:76:88:aa
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ea:62:de:48:41:44:42:ce:eb:0e:9f:9e:f4:8b:45:e3:e8:0b:77:58
Fingerprint (sha256): 3d:ab:60:07:c4:61:a8:4d:ed:95:1b:ea:4a:5f:94:1e:57:3c:f5:32:2b:d2:91:d3:2f:2c:6c:ae:2b:0f:b4:d0

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.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

ECDSA

Key Size

384

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature

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

opportunity.cz
opportunity.dacia.cz
opportunity.renault.cz
www.opportunity.cz

Other certificates including the domain name opportunity.cz

(limited to 100 certificates)
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
cxc.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz
www.opportunity.cz

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-----
MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAEQcY6r7xYNfl5586AHjMbWUpgB65hrzT/
OCV6ccul+soYsPgl5FXan+080ZEunYpEFeYkDqOvdTHJIQ9YeAk3gJxBa1fMJjaF
ZlsERqjQuD/e912kggOBU1CrzRMnkX/v
-----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 286432299371566659118267262861323348013030
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-09-08 08:26:55 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-07 08:26:54 +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 1.2.840.10045.2.1 (ecPublicKey)
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.132.0.34 (secp384r1)
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (776 bits)
				000441c63aafbc5835f979e7ce801e331b594a6007ae61af34ff38257a71cba5faca18b0f825e455da9fed3cd1912e9d8a4415e6240ea3af7531c9210f58780937809c416b57cc263685665b0446a8d0b83fdef75da48203815350abcd1327917fef
 . . . . . . . . [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 (1 bits)
							0780
 . . . . . . . . . . . . . . . . [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)
							f75086879a9ca1301d3105f3f76cfb9c677688aa
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (84 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'opportunity.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'opportunity.dacia.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'opportunity.renault.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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018a741da8a600000403004630440220020aec4e079ed7fbff56cdfaf25835d1bb46496ea8a4ef633ed39ae8371453dd0220717dc222a9f17e7ffe19a43e0c772f7b9c8dc69bc7ea4b92d898b7ee2a51c72d007600e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e0000018a741da8ab0000040300473045022100d900643e898020e5a16cccfa7ee693bbf105423f76120a6e4ceb3c8c9a49934202202c3e9d5b300bc85fac8bb4e07834bc55d858b13aba1ff6f03d5733d4f37a8c60
 . . . . [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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