library.duchesneacademy.org

Issued by Go Daddy Secure Certificate Authority - G2

About this certificate

This digital certificate with serial number 49:52:b4:d8:12:1c:df:54 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=library.duchesneacademy.org,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): 49:52:b4:d8:12:1c:df:54
Serial Number (int): 5283484152968830804
Serial Number lenght: 63 bits, 8 octets

SubjectKeyId: e6:83:4d:38:d6:c8:48:72:45:b5:59:86:25:51:48:27:8f:b2:b1:53
AuthorityKeyId: 40:c2:bd:27:8e:cc:34:83:30:a2:33:d7:fb:6c:b3:f0:b4:2c:80:ce

Fingerprint (sha1): c5:80:0b:d1:f4:02:14:3d:d5:46:e9:53:60:67:01:63:5a:22:01:4b
Fingerprint (sha256): a9:80:be:33:2d:f4:2e:46:ab:89:3b:9f:1e:6f:e3:8b:13:33:ea:94:fe:61:2b:ad:ba:1f:8c:68:6a:c5:06:63

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/gdig2s1-709.crl

Check the revocation status for certificate library.duchesneacademy.org

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for library.duchesneacademy.org

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

library.duchesneacademy.org
www.library.duchesneacademy.org

Other certificates including the domain name duchesneacademy.org

(limited to 100 certificates)

Certificate

The complete raw certificate details for library.duchesneacademy.org in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAhSkr2JCBPv/MsgYCnEvz
fUc+fr6M7kkpRbpjW5vLAMVs7HOc8OMvzGF43sX/iHYExHV2dlbGFPpvAMY7INT4
4+//pwfZZ49ilAIlxNwvRHlF8Afi3Yeq9dWeb1cj16rwQHPFT25LmCFsTQN9aAeb
g+dO61YKAhhUhVu72o9hAS9qCHwM1ddH19lY72f/GsFr3iMI50GbC2pTNPx8r5XW
IyoSJVPAQUXF/TDeiNE0V0540mRYAMOyNfFuqOVF7kM36vQ81bsVSE9WIW4ff/6j
wOhrURHxUcgFKrlzf8hf6y35FXi+USWkO8iaaPKpkij6FFO6K3mQUVAB8h7uZ5HH
pwIDAQAB
-----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 5283484152968830804
 . . . . . . . . [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 2017-09-22 16:15:01 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-18 21:13:38 +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 'library.duchesneacademy.org'
 . . . . . . . . [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 16809996872008603965332330260247001616721350583399624343439576803254343645698297606504580558975497792055805190895591500056775281471951434772497939610406923913108302567326629475898052707467852113666090724003330035805283044949395446692708383781497434156484966751115179842634171626674752505869868147274461476046989891956905607317081050122005964637591471330933190771021012029357236348482870656920977445778664569177729473113055977309338310917958920732859124632879463093473353343946256454815582867462174081544862450397506949816739981205640364017921276578802585478603528408858235937189607598922084677789234132742951624886183
 . . . . . . . . . . . . . . . . . . . . [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/gdig2s1-709.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 'library.duchesneacademy.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.library.duchesneacademy.org'
 . . . . . . . . . . . . . . . . [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)
							e6834d38d6c8487245b55986255148278fb2b153
 . . . . [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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