knowmebest.com

Issued by R3

About this certificate

This digital certificate with serial number 03:6d:83:b9:cc:a8:27:66:61:b5:38:b5:ea:99:8e:d6:52:01 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:
  • 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=knowmebest.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:6d:83:b9:cc:a8:27:66:61:b5:38:b5:ea:99:8e:d6:52:01
Serial Number (int): 298602729382963769514407511881068255269377
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: e1:b4:23:f9:09:93:1b:73:86:05:b2:9d:44:cd:cb:f5:b9:80:ee:09
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): f6:b7:a5:18:89:93:ed:a4:04:42:f6:6a:b6:2d:7c:cd:cc:a3:26:f3
Fingerprint (sha256): 3c:95:3f:a3:9a:2c:c4:92:33:13:95:46:b5:89:23:6a:df:e9:e7:5d:f7:07:45:a0:59:1c:33:3b:a0:cb:95:1f

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAp2DKa5wtGgSxK173/Ct9
BIuDZno3ldNWqnjvb7pNmgZbnRwBFnwCOwAenvfzP4GZrAtk3kMJLHOc9qH4M0Xx
Fo6mJphPHG+I4rhRMAn+kHtriJ4WqEroaUYuNxBH+Jse2IsCNpTYkadD0yY5azt+
I/SVM/dThTj6uu+FnXjYHlflhg0tr+X27qNmj1IVNKX2x7FzYmHR7yQ3dENZnQRA
lEuvigB3kSwgHx5EitWxsLbYqSnMVzvCMvT6p5wNy3x4x5DtHd/UIp6j3Y/MaPYy
hrup6QFXBccAQzps+LjSu0tq6eKlTEjBiFd6ehbmNOVlDanGinHqXNywsN7yyi9U
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 298602729382963769514407511881068255269377
 . . . . . . . . [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 2024-02-23 11:43:31 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-23 11:43:30 +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 21129526204614823726873066431932915205914490829498404826014604026335061756277324669506802606753334109586672096753940277471667285056498895698430581169233118991886043822474344494762554928660776166514307686963837637320192601802881649791094033294159208513511455875836089540276630225388578656235495219228949370463404328735595239524523476041265179679679555813496679346033474152721192040180185685288127602046576568782126999187761636359910512391935540999731558803147527820768047273041513152213892194514862685659101741959774940333860776779454681408955174766977351688559709881419508864730348622072602150118044796219563694838913
 . . . . . . . . . . . . . . . . . . . . [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)
							e1b423f909931b738605b29d44cdcbf5b980ee09
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018dd5fe06770000040300483046022100e8b266b332f7bfca2ac8165bb7293d51524831a59a5cac6e17d4c8da3bc64ddf022100b596d7a46666f5e57daef5bdda7193576daf93785aaebc65394efdc6258b6ac5007600a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018dd5fe068500000403004730450220691b82bb6c4f9595ae8400327d016a8cf825523e9d7d3bd2893b63f0d0d4df4e022100ffcff2d70d3784a82aecc33acc797e2be3537921c4952c99e92063e246dc2665
 . . . . [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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