www.davidzwirnerbooks.com

Issued by GeoTrust DV SSL CA - G3

About this certificate

This digital certificate with serial number 1f:58:3c:d5:42:50:64:b3:a4:a2:99:9e:96:60:84:83 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): 1f:58:3c:d5:42:50:64:b3:a4:a2:99:9e:96:60:84:83
Serial Number (int): 41664223833581491794114681108797883523
Serial Number lenght: 125 bits, 16 octets

SubjectKeyId:
AuthorityKeyId: ad:65:22:85:90:d0:3b:e3:a1:49:8b:37:f9:f1:0b:1d:5f:17:a0:77

Fingerprint (sha1): 58:31:7c:31:e6:6c:eb:f6:f3:3a:cc:fd:90:60:82:99:8a:40:66:a7
Fingerprint (sha256): 58:86:1e:ec:32:a7:08:dc:d0:72:ff:87:dd:49:9d:65:fe:e8:4d:8c:8e:16:95:86:aa:3c:2c:65:91:10:a6:91

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

Revocation information

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

9 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)

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9YsZe3FBVPNvFghI/SG1
g4qYmgJRyK5kQ0QehzjT+hHcpY4ym04RFDyIBFGG+kkUqAyBTniE3EUbPu+DVrY1
VH9/9wNwr/izDYyCG4jHRLGuswOVY/TAqUsfxCWxvXCVII/MZyryX8cfhnt3DiYb
7qGbxnSZPimXYlLoejudwDXAEkARY63O27DD2fbvT4nLhtNqW3R6Y1aXNYK39gYi
2gnRfNxOhB4EIHIQ7UMcleqx6Jiqfp3fT/JKnj3Mojg97QeWY+5pesdoqClOamWT
ctcX6SnDpIYiZPzIG2YnXY8xWVk+qwY73QtWZq9EarR0TVXystkrGO4394fnWid4
GQIDAQAB
-----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 41664223833581491794114681108797883523
 . . . . . . . . [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 - G3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-11-28 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-12-28 23:59:59 +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:12|false] UTF8String '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 30996977256254279558082200420810047255567134716052575194864951960929139590625880211939527469280776868466239541878717179679951181397477099306567307027915051193638717535012994334169248156693394868380818358341084890761831039965084626170916523453544895590124848583577761027841190687056942722970856481941060869062968600016960556714520779794224908067675270284974178393988640938994175677266529515378530768426809406558345973484248572579230420741712872487798071028083256702217973251121907253390351388863759337240716251902714946815830193667142969403134160089077086529930241440094179661661681194103946970012559626930523453487129
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.17 (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 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.31 (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://gt.symcb.com/gt.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 (149 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'https://www.geotrust.com/resources/repository/legal'
 . . . . . . . . . . . . . . . . [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 ad65228590d03be3a1498b37f9f10b1d5f17a077
 . . . . . . . . . . . . . . . . [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 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://gt.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://gt.symcb.com/gt.crt'
 . . . . . . . . . . . . . . . . [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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700ddeb1d2b7a0d4fa6208b81ad8168707e2e8e9d01d55c888d3d11c4cdb6ecbecc00000158ad25d1270000040300483046022100f832d37dbf09df23b626d6221722620ab0d494f7b9a4cd65f9cd0892b9abd161022100a9175294f87da80a19d39fccd70b471636cf8c0091f0c71ddffaa61a29f64ebc007700ee4bbdb775ce60bae142691fabe19e66a30f7e5fb072d88300c47b897aa8fdcb00000158ad25d1720000040300483046022100e6bb744df24b596b0425959f277b327b21117492fded5334b81dc7e4f1a79b01022100bfa20f42ed4495155cdb17ed34abbb272cf6503c40763b916606106fb50ee0e7
 . . . . [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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