www.davidzwirnerbooks.com

Issued by GeoTrust DV SSL CA - G4

About this certificate

This digital certificate with serial number 02:8d:64 was issued on by GeoTrust 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)
  • Sub certificates SHOULD include Subject Key Identifier in end entity certs (RFC 5280: 4.2 & 4.2.1.2)

Certificate Subject

CN=www.davidzwirnerbooks.com

GeoTrust Inc.

Organization: GeoTrust Inc.
Organization unit: Domain Validated SSL
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 02:8d:64
Serial Number (int): 167268
Serial Number lenght: 18 bits, 3 octets

SubjectKeyId:
AuthorityKeyId: 0b:50:ec:77:ef:2a:9b:ff:ec:03:a1:0a:ff:ad:c6:e4:2a:18:c7:3e

Fingerprint (sha1): c8:c2:b5:3f:46:b8:55:7a:09:b8:be:1c:80:37:61:f6:61:6d:a9:e8
Fingerprint (sha256): 31:b0:73:c5:d9:fe:22:30:a1:0c:05:ea:97:e1:1f:e9:23:e1:34:a8:47:2e:eb:85:c8:1a:74:09:5e:c2:ea:2e

Issuing Certificate URL: http://gu.symcb.com/gu.crt

Revocation information

OCSP Server: http://gu.symcd.com
CRL Distribution Point: http://gu.symcb.com/gu.crl

Check the revocation status for certificate www.davidzwirnerbooks.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.davidzwirnerbooks.com

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

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

www.davidzwirnerbooks.com
davidzwirnerbooks.com

Other certificates including the domain name davidzwirnerbooks.com

(limited to 100 certificates)
images.davidzwirnerbooks.com
www.davidzwirnerbooks.com
www.davidzwirnerbooks.com
davidzwirner.com
www.davidzwirnerbooks.com
www.davidzwirnerbooks.com
www.davidzwirnerbooks.com
assets.davidzwirnerbooks.com
www.davidzwirnerbooks.com
www.davidzwirnerbooks.com
assets.davidzwirnerbooks.com
*.davidzwirnerbooks.com
images.davidzwirnerbooks.com
images.davidzwirnerbooks.com
images.davidzwirnerbooks.com
*.davidzwirnerbooks.com

Certificate

The complete raw certificate details for www.davidzwirnerbooks.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA671g2p/WelI3GLYX2mv3
470h0dtxKh3c0nhWz3yaxqnCCl5H9WyxQ4y7F+fXHNEUEFBulVyBpXjrbNF4J1bO
EAKK+erw0Z5N39PWQ3seyri4u/d53qLw5vY+rKgRxNAH488e2Pfs+MVxGgrJYCtu
h/5UgaM8SrHxwJE70bDXAIvWeRTOV0Ct/cEUXAF1x4jSFGwYn7AaVqxrHD6SpITx
17CAZIn0XLeprXaQAiKhpGPCSSig3TO+KamL351D8ofe6oQUxhQOI/tfIZIh1zKS
4SvHmnmjTCM1Yiui0l8wjDzL2LhUVq9Zd34s/wknbGBRF7JUEsFuxZpP3Af9S3fO
/QIDAQAB
-----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 167268
 . . . . . . . . [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 'GeoTrust 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 'Domain Validated SSL'
 . . . . . . . . . . . . [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 'GeoTrust DV SSL CA - G4'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2015-11-08 00:12:44 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-12-10 14:24:14 +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.davidzwirnerbooks.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 29759387605018888115554126225920539032600768606015946486044241028178471780585108679638116231888784233881096996593751728503440567742190053825479804095930837307227133164152908963455484167489610303662449271040094975973597752983323802376494151886958088778236088693416177505267840887909813056976213229750652861472732621451569559539252683917655714384081547813943067699929189404765057685037131300422689940020924588227032542092068689955851488762250417799265058869725250219372080722164560406068229390186370963474877904712148481146028508724122169227438832147432711108511489313578788943282701042594903798346500193939681000804093
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 0b50ec77ef2a9bffec03a10affadc6e42a18c73e
 . . . . . . . . . . . . . . . . [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 (75 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://gu.symcd.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://gu.symcb.com/gu.crt'
 . . . . . . . . . . . . . . . . [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 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (52 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.davidzwirnerbooks.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'davidzwirnerbooks.com'
 . . . . . . . . . . . . . . . . [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 (36 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://gu.symcb.com/gu.crl'
 . . . . . . . . . . . . . . . . [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 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (79 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: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 'https://www.geotrust.com/resources/repository/legal'
 . . . . [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)
		00a816ee83bdaed9f265d42c79e01392a9821f3e5feeb05c2f29f9e7aed95a0b52b9391ad11014c3e0d4007c2dbb49585531eeb79c1871ce41028a2ad3c0e76cfdae06e14f6b2595352090ba17549552381f0ee12e8927fe27e9aaff517d6a7521fabfe996239d78be80016045f1d9f9a396f779c2ccd7b9fcd012e6461624cc136df69eae7ed69b94311e551733ed8d266db50ea749698dab2988a94493c4ae35abf256e700d9a448de449f260992449d1515af6c6fe823fccce4df81df8c49de18a5f5f7f6c5ddd0bbd9202554e2d74d87ab7e0bad302c81d2273cb0971d558a90ab2e4b852e2e76f8e38489a5958285fc3064807a4d0dce7ae273512ff45e1c