assessors.mysterydining.net

Issued by Go Daddy Secure Certificate Authority - G2

About this certificate

This digital certificate with serial number 2a:e5:b4:70:d7:1e:3d:eb was issued on by GoDaddy.com, Inc..

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=assessors.mysterydining.net,OU=Domain Control Validated

GoDaddy.com, Inc.

Organization: GoDaddy.com, Inc.
Organization unit: http://certs.godaddy.com/repository/
State / Province: Arizona
Locality: Scottsdale
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 2a:e5:b4:70:d7:1e:3d:eb
Serial Number (int): 3091075115998133739
Serial Number lenght: 62 bits, 8 octets

SubjectKeyId: 67:ec:9a:cb:20:af:e5:96:5c:aa:1b:fb:8c:9a:51:97:b4:5c:7e:40
AuthorityKeyId: 40:c2:bd:27:8e:cc:34:83:30:a2:33:d7:fb:6c:b3:f0:b4:2c:80:ce

Fingerprint (sha1): 89:36:62:7b:50:a2:d2:7a:1f:53:06:d3:0c:98:bd:4f:52:f2:84:23
Fingerprint (sha256): 25:54:fb:02:15:df:23:e0:8d:e6:18:8e:56:08:59:ce:65:0f:a6:3c:75:a1:26:b2:4d:0c:23:64:45:a7:ae:7b

Issuing Certificate URL: http://certificates.godaddy.com/repository/gdig2.crt

Revocation information

OCSP Server: http://ocsp.godaddy.com/
CRL Distribution Point: http://crl.godaddy.com/gdig2s1-791.crl

Check the revocation status for certificate assessors.mysterydining.net

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for assessors.mysterydining.net

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

assessors.mysterydining.net
www.assessors.mysterydining.net

Other certificates including the domain name mysterydining.net

(limited to 100 certificates)

Certificate

The complete raw certificate details for assessors.mysterydining.net in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtISzStC+GC+9MUhv/GNJ
4eQItLF92nZBhNIeCYRNqIoTbqLCwUK+9DMeAzt4fZoWczdi6DLXHpIuZLczPLnN
pbZmWWsMalgA5KknXdeJZrnJQn/rfPGjrv5IRPCI5p32/kNcSCPd6yU5tDgoVJsA
DPISLAWC+FtekHjNnwIXnmFVM0QHOTf144NhbKGmo7E8jOZVNGjsXi/Wxx23oWdF
8y7qAdDbt9ydvO0LCNijPIgESpZu2P2K/0KVBHnXA8W/NV+WaoI822Let7RO4Yqr
cKmLgc7+ajVl2BdkPIWOT3Ti8ieuYHP61OlnOupaiQNSTyohQZ/ORZvY2UwiYJoV
YwIDAQAB
-----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 3091075115998133739
 . . . . . . . . [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 2.5.4.8 (stateOrProvinceName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Arizona'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.7 (localityName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Scottsdale'
 . . . . . . . . . . . . [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 'GoDaddy.com, Inc.'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'http://certs.godaddy.com/repository/'
 . . . . . . . . . . . . [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 'Go Daddy Secure Certificate Authority - G2'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-11-27 16:34:01 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-01-25 10:18:54 +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 2.5.4.11 (organizationalUnitName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Domain Control Validated'
 . . . . . . . . . . . . [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 'assessors.mysterydining.net'
 . . . . . . . . [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 22788331880445285808459090436387974908569178334355583294047318777138103368998513864179407295091852290104153298932182862852172091088742420920051364930129092218333386547827458624076355372778814789763954046602158519271553529677858236135225326970056308813008528436409841817361650043254518513454660503301629509965396966829064151715679467871425723825042769097716396931629382291819253763114806800215599069961952788160546766749014997330718928833699651808387421579003578938822481483070651503989815418587453706573550645017894227642553560833374197782949318374506508733147123263792656622609735611523054412258639216877716786255203
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.19 (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 2.5.29.37 (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 2.5.29.15 (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 2.5.29.31 (cRLDistributionPoints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (48 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crl.godaddy.com/gdig2s1-791.crl'
 . . . . . . . . . . . . . . . . [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 (86 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.16.840.1.114413.1.7.23.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://certificates.godaddy.com/repository/'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (106 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.godaddy.com/'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://certificates.godaddy.com/repository/gdig2.crt'
 . . . . . . . . . . . . . . . . [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 40c2bd278ecc348330a233d7fb6cb3f0b42c80ce
 . . . . . . . . . . . . . . . . [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 (64 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'assessors.mysterydining.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.assessors.mysterydining.net'
 . . . . . . . . . . . . . . . . [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)
							67ec9acb20afe5965caa1bfb8c9a5197b45c7e40
 . . . . [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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