yzjv.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:d6:7f:ad:2a:43:83:67:bb:c4:2a:92:e7:3d:c5:79:60:d8 was issued on by Let's Encrypt.

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=yzjv.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:d6:7f:ad:2a:43:83:67:bb:c4:2a:92:e7:3d:c5:79:60:d8
Serial Number (int): 334326995396392940146245430609496294121688
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 60:0d:9e:9d:41:ed:8f:e8:90:8d:98:7f:d0:bf:9d:33:cd:7a:53:3e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): b2:8e:e5:98:ef:d4:a4:b2:e8:2f:25:6a:a8:12:a0:ed:55:df:4e:71
Fingerprint (sha256): c8:d1:65:15:89:ac:f2:cd:4d:68:d1:79:b8:98:e0:99:05:53:91:9b:52:44:b0:5d:67:b6:f3:62:9d:15:a9:e4

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 yzjv.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for yzjv.com

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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

yzjv.com

Other certificates including the domain name yzjv.com

(limited to 100 certificates)
yzjv.com
yzjv.com
www.yzjv.com
www.pdqmovers.com
yzjv.com
yzjv.com
yzjv.com
yzjv.com
www.hope-solutionist.com
yzjv.com
www.cryptomillionaireacademy.com

Certificate

The complete raw certificate details for yzjv.com 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 334326995396392940146245430609496294121688
 . . . . . . . . [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 2019-03-11 07:02:40 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-09 07:02:40 +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 'yzjv.com'
 . . . . . . . . [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 685619484384518181858698346071020323822384297976856819699090892370865407867722446168609292715106166141399286392418009243559332192786984727360163511848467852585940678911767075666345481688366460372874400444374955489206511055279200609344591644862413567729979184152381518016280763593245205580750328770751137711143851375562261396242698887309598885506831583688217380970322508357687961757059560770037634980712697738866005084838533108913515676500089494541109328092632796064885263935305189271795939101296303305566102537549243280820738332198350815967880055108925940629047286507523163089165293943027212254208529180195217508070542933330687213199271514491676000284964141874226743441427636134170959209644608454909567357118071350464033933642081402389240737866151627503291451192682515694686902522120600257793341753155625713173748399872696589225383128518156709101903347943252355852583363208496816917732993465410746039642000306290721933568321356416812850241895846154240416100555471386658681489843769353201970804835361926522133695052815367462859624336086373851968003246565887322711581273053850070748678876373421927970700458295836182877993366216545543342511106291236385131232689974470030778980122350769519436329923931206767484114883443063504081907720337
 . . . . . . . . . . . . . . . . . . . . [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)
							600d9e9d41ed8fe8908d987fd0bf9d33cd7a533e
 . . . . . . . . . . . . . . . . [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 (12 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'yzjv.com'
 . . . . . . . . . . . . . . . . [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)
							00ef007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe000001696bc66f2f0000040300473045022006d934019b58cae462b2ee30601040da0b5072a9d2a85cd36b5a6bd960b8093c0221009d17e21414c83e2cf94f6bc8fdf74d8fa08e7217fb611225b9bb426ce41145fc00750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d000001696bc66d900000040300463044022007af3a68b035dbeb1c3da0c70c651b448288dd54ec1c3dbea81d131a8ccd245b02207de48e85792668b850748d946589a00204d378b33476cef2e4e7168abbff08fa
 . . . . [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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