knowmebest.com

Issued by R3

About this certificate

This digital certificate with serial number 04:67:3a:86:3a:0f:dc:b6:c0:e9:b2:bb:6e:bb:cc:dc:da:28 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): 04:67:3a:86:3a:0f:dc:b6:c0:e9:b2:bb:6e:bb:cc:dc:da:28
Serial Number (int): 383576019689068704197929876991538609576488
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 7b:02:40:d4:84:f1:3b:9d:88:9b:cf:c1:db:dd:16:8c:8f:8d:6c:1e
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 4e:fe:bb:16:96:bf:b9:64:47:8a:4f:eb:ff:a1:21:91:4c:07:91:c4
Fingerprint (sha256): 7b:27:93:1f:51:a4:7f:f9:83:d4:93:87:1e:16:23:26:eb:f1:e1:f5:d2:c5:5b:d0:7e:9e:60:97:e0:c2:a9:d9

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoLHj7sVZihhBD0pLGEiX
Xhw1iQdDguuQ1Sg/ckV6Qxmf56MrJTmnW1VgbpRXB/lYM9wI5vUe5pZ1ST0ivUIz
0x3B8J13n7CBNQPmH2fJNZLEtgu2fJcq0GV+CvJEEMiT5nXClM2mg2evFXirQv5B
TxTjjGE4j8yCTnk2Tb7uJw+ad6j0uTixN/BVFEBiC0PTjTEJHRoyigJiO007f3Ve
ncQs3LikNyuoWbQxYfZQKqWPKR/iiTtcMJZQ4pGBhB4KVuWwUOIbv7Y/bkw+9jUs
3HbE01Uq5sX78r8UeWgZ7H3PbmuyE7W2rFJxTK8DIM3/yHQ0kve/GlhhPfi0MXiK
HwIDAQAB
-----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 383576019689068704197929876991538609576488
 . . . . . . . . [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 17:58:31 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-16 17:58:30 +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 20285849801529939006588113647060069532258907608488836881937130930582747608704969766920596961303436850768946685523271411689484836880779793453940854979514016747562967066528232408261482709331218862984068676597416764057018698301690916376621219936003851644938991388215963416092360732926155632188276826461426390308976558331181005211559679182956304576027859737520722180298005709581546895128529590319500987009905960282709905634856753461413409452529406561589945338602306757943340215895797190396549977150194124391956717463563122045859296581554767315335486146822697175707218351456914043716076513908422667210154175416235235772959
 . . . . . . . . . . . . . . . . . . . . [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)
							7b0240d484f13b9d889bcfc1dbdd168c8f8d6c1e
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b4427597e00000403004630440220447cbc7b92123740e5876ded1ab17a59a193995f71a6dd7e53c769e3f79403cd022051fcfe60f7113bf373e6e02f6b0682f6218216e619af7ecb040d5f9da8e6fdb600760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018b442759b50000040300473045022100ba941b8f504d65ee51dab1160dd11a8bf68a9749653b941ed9b73ab75387a7cb022053e005fc944e619f947a82c65a3fcd940e6b1fe8557e32d3b0c4341a7aedca04
 . . . . [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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