knowingcompany.com

Issued by R3

About this certificate

This digital certificate with serial number 03:8d:77:eb:2c:6e:1e:d3:10:11:41:3f:fa:dd:d3:58:e6:e4 was issued on by Let's Encrypt.

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:
  • 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=knowingcompany.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:8d:77:eb:2c:6e:1e:d3:10:11:41:3f:fa:dd:d3:58:e6:e4
Serial Number (int): 309476070753543884108337090817608553916132
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 72:a5:32:f9:29:91:9b:4b:72:5a:31:24:4d:4d:88:4a:6c:57:12:f6
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 13:5c:20:8d:48:b7:f5:82:fd:ad:20:69:fb:06:22:82:0a:34:6d:f0
Fingerprint (sha256): 57:99:aa:3f:40:e2:5a:73:b6:b8:cb:1a:84:a0:84:c3:22:f5:2c:18:cc:9b:66:de:82:a4:a3:6e:b7:df:c5:c4

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

Revocation information

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

Check the revocation status for certificate knowingcompany.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for knowingcompany.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

knowingcompany.com
www.knowingcompany.com

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvKOIBcmFhem45ONqAnZt
coXzA6slEfOqRp4SW5y8X2DK7GceUk9txHYa1BzrRwMukfI9SVftytf8iLr5NXSF
IPprBBxW9gqJpNiJsynFZ0GwODLgQKc76/UsU5LU2yCPXnoxZn9GMIzHJHP4tFYW
m2Solx2VMYIfoP/N0n4OWuj3BwEdaBTSROEzjqpqmT3cS3k3M+zHwXZRNWDsXxji
eFL28uh+u/fZNEDe2QtPg4MXMdyr7ZkS7dQIqvwlVek+VzGWrH0zRvZPch3BpTCu
B+YzVf+wRIWcpUcDi/on6VvOl7t1jE/SOB+CMB4Etle8cR8UIwNz2XjftkHEO7n0
TwIDAQAB
-----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 309476070753543884108337090817608553916132
 . . . . . . . . [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 2023-10-18 06:13:33 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-16 06:13:32 +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 'knowingcompany.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 23813441642042950260219102213265154516097931026416264932830333375543524558150332219946888385415126381867767189313764305146640960534145053726363289211535369775592355414064646155019710992773612278293806739994586138407505227031072971068495364642161941058433553707979077215698746925460831454822132315682538290965019285559671177239819034967149087164126863726312278865880695617578182501876611245755588696551635543756812862046195758669548765826030952144038635195588622160405322037785927761350753166488438564068863401852940603013135031180571533219021959504567344694796343616468424692014539263983991939713105548936841556259919
 . . . . . . . . . . . . . . . . . . . . [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)
							72a532f929919b4b725a31244d4d884a6c5712f6
 . . . . . . . . . . . . . . . . [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 (46 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'knowingcompany.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.knowingcompany.com'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b41a1eeba00000403004730450221008c75964344bbd5d26c49d2c2496b97e66f7fb17c480519a00d2545e3373048f60220397831fca4947afe760149d6ae38b753df9749aa9ad9ae7554255af2c65c1ac6007600dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b41a1f0b30000040300473045022100f8dba3101c0aaa4dcaa327bb39044574d4548653caedf056af1b04e20af5d3640220419fe57cc49a92fc1c6ed4758992c6578d0c5e7bb604bf81a78aa8a2040ff68c
 . . . . [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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