*.blackbooks.co.za

Issued by R3

About this certificate

This digital certificate with serial number 04:0d:8a:6b:01:34:c3:b6:89:9b:3b:47:e6:c4:06:f6:82:62 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=*.blackbooks.co.za

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 04:0d:8a:6b:01:34:c3:b6:89:9b:3b:47:e6:c4:06:f6:82:62
Serial Number (int): 353056803560658212534171919294959778693730
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 5a:ba:4d:44:63:99:4a:25:2e:7c:55:30:dd:20:74:e3:52:9e:7c:8b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 2a:5e:4e:70:ac:7b:ac:e3:d9:e9:b5:83:36:1c:ae:f5:bd:f0:51:cf
Fingerprint (sha256): 0a:4c:b7:cc:43:a1:62:0a:58:26:11:c4:85:42:93:82:79:bf:90:dd:d0:7b:46:e2:8e:80:bd:88:ff:20:fe:06

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate *.blackbooks.co.za

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for *.blackbooks.co.za

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

*.blackbooks.co.za
blackbooks.co.za

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Certificate

The complete raw certificate details for *.blackbooks.co.za in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5sw4BzAp+KzO2196FyA5
52Ce08fD47gEhBdOebS2nKIdF0I4py/uRdy+Hg/rAmob2u9A5STG23ENX2ZxQ4bq
8W3Ty06lH2cc6v2VqMU2h2MML4tWzeSjdwA6psOajfxcInJRpBmjXD3EVKJwcRil
S4R2v949kD/ipFFzGOOqK40cN7t0X882Og6WIpSPQNo7ICJk4eThjDFMoVmcLtwl
3M9p5cYZ6w6Hn2OhzS7zXvYLe0GqRDeYmXswVotIHgnWSbcxdhWOI2makl8xwS24
pOdQq6wRBNAVQccsU4sgc560TArs0+da/e1cNbFLZL0t33N4as6uayXzJO0jpw3Q
6QIDAQAB
-----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 353056803560658212534171919294959778693730
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-01 21:04:50 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-30 21:04:49 +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 '*.blackbooks.co.za'
 . . . . . . . . [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 29135514215195034959855626349429530596160269479532658596244946714149131550140970403824090262752516464619150429964822805759246816121712081314458880858252299744485395327420672770928511873831018574206737728527232278333593491103957023513626350665712244244146400942743135214185271066643997350378102085735373969074838851229543533428245049702861473038994310885700395439382198804400583569347802334374792596436793131948911991605165528237827105806322710575645353935773928317832455164763599451521522020272338187464822117113063960516850966076036319344623065280908028108686126467439697392360906803963109566277351304515490969145577
 . . . . . . . . . . . . . . . . . . . . [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)
							5aba4d4463994a252e7c5530dd2074e3529e7c8b
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.blackbooks.co.za'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'blackbooks.co.za'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076003f174b4fd7224758941d651c84be0d12ed90377f1f856aebc1bf2885ecf8646e0000018f36305d3f000004030047304502206b4ef9da19715b9a74656793fa06bbe27c745b10c16c923315f47ec740693ae2022100be5bc5d0a87dbd76c49a410e604332603a8c72f5345c5d9a406edef94fcb9fa4007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018f36305d2f0000040300463044022031080cb34da787dca4d25278c612fa7b34946905f313af50e42cd7ce299bf38d02206cde6a74ac3e65c1b12f69920ef72d24d18e0936ccf96499576b8559a7fe492f
 . . . . [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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