knowmebest.com

Issued by R3

About this certificate

This digital certificate with serial number 03:ab:2f:64:84:23:63:e3:bf:0e:eb:45:c4:ba:45:fc:5a:87 was issued on by Let's Encrypt.

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=knowmebest.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:ab:2f:64:84:23:63:e3:bf:0e:eb:45:c4:ba:45:fc:5a:87
Serial Number (int): 319588138164330929435298407637144861170311
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 28:3f:a1:c0:98:9b:e5:80:e0:70:fa:51:8a:27:3e:48:66:20:15:fa
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 9c:fd:3d:af:64:95:b2:c7:e5:09:94:92:44:f5:de:af:71:6a:1b:81
Fingerprint (sha256): 9d:df:67:09:b6:09:87:30:ab:06:ef:58:0a:eb:fd:2e:c7:41:4f:84:d1:f3:3e:e3:62:3c:a6:63:6c:83:ad:75

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

Revocation information

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

Check the revocation status for certificate knowmebest.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for knowmebest.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

knowmebest.com

Other certificates including the domain name knowmebest.com

(limited to 100 certificates)
api.knowmebest.com
novaxavantina.gerenciazap.smartmidiasdigitais.com.br
api.knowmebest.com
knowmebest.com
staging.knowmebest.com
api.knowmebest.com
knowmebest.com
www.knowmebest.com
*.knowmebest.com
knowmebest.com
knowmebest.com
*.knowmebest.com
knowmebest.com
video.knowmebest.com
knowmebest.com
www.knowmebest.com
api.knowmebest.com
staging.knowmebest.com
knowmebest.com
knowmebest.com
www.knowmebest.com
legends.turnosweb.app
www.unitz.app
link.knowmebest.com

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2bXmJlDYw6DjR8tLNt6T
G8G/dKgJNVmgAM/NIzlF/dyROnHXjOshRAXUHrhjjCn+QgULsU876uqInCw4UY+F
qp/2DKg31X/BQVE7O+g45D+u/+AYcJ5p/+dPRWOV9mAQoF8/T5hRB3vMJylKiq9t
s4areCx+fJOlQQlLY9hcpN8Q2CrUF8/L0oSI23M57SasT0xR+bxyNOFrhxo0KeoS
FogoLSPTwaHZK2hdQVmR5FQq5Y2i3cjh8hsylGvSswsHiml800LPt/BVHHwtem58
7CrgIcdzfghYXFAscAAAhgSCffTE8I8mINnyx9nu6a0YovbwaGTpNPKwXGpeAxYM
WwIDAQAB
-----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 319588138164330929435298407637144861170311
 . . . . . . . . [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 2023-08-04 03:51:48 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-11-02 03:51:47 +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 'knowmebest.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 27483409928539237490455913587270357655475413676129033414737815425107782054811337664929227945551733209647937220678715131178172837640576369844895827565976534826805060193252804381126998626748318630388332716861825155954938200318901314909076723469515700097000138880035853266831126872550068993795845598361337530823837886163395457661888182621468867691632889772918222321454873324562927482623082119961775156174253823824614807841211793706472313458107191347860102621048039371557068265475009154692492028882199198025263470283321675942768458447445259899412691176789099773938126281483165910162529503029867432944666342934184675642459
 . . . . . . . . . . . . . . . . . . . . [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)
							283fa1c0989be580e070fa518a273e48662015fa
 . . . . . . . . . . . . . . . . [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 (18 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'knowmebest.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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000189bee334cd000004030046304402200bfd03f6dfc51724c37a27af136da02c41c4caf3abba339b0c1098df37dd8aed02205f0f711c73b2585bbf36b6786b020a368d8791e1bc02ac98bd21d1ebea8082ed007500e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e00000189bee334c900000403004630440220204f2f2eb2d30be338ab3dce23d00ab4f36c790ca12c48bedef9b096a1fec58e02205967cd06189b501b8b908b40e24eb0624401018ef8d090811e3bd1d2dc2de2eb
 . . . . [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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