DV SSL/TLS Certificate for www.cursosandravidal.com.br

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the www.cursosandravidal.com.br DV SSL/TLS Certificate

This certificate with serial number 06:f9:59:74:81:78:53:73:82:2f:2f:64:d8:13:70:da:2b:12 for www.cursosandravidal.com.br was issued on by Let's Encrypt.

This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for www.cursosandravidal.com.br provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 06:f9:59:74:81:78:53:73:82:2f:2f:64:d8:13:70:da:2b:12
Serial Number (int): 607522931177899650104656709991639025330962
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 58:3e:e8:87:1a:0e:75:0f:e9:16:83:3d:b0:45:fd:25:f0:84:4e:e9
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): f9:9c:f6:e9:83:ae:22:a2:94:11:23:5f:11:5b:02:2c:7a:83:3a:59
Fingerprint (SHA-256): be:fa:29:2d:ff:62:06:df:52:94:ca:39:f9:91:f3:14:16:7d:a9:90:d8:81:ad:f5:02:23:f3:c2:00:91:ef:47

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/19.crl

Check the revocation status for certificate www.cursosandravidal.com.br
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for www.cursosandravidal.com.br

Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Key Encipherment
Digital Signature
Extended Key Usages
Server Authentication
Client Authentication
Extensions
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

www.cursosandravidal.com.br

X.509 Certificate

The complete raw X.509 certificate details for www.cursosandravidal.com.br in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwVDesKfhlu7jSzBcSuAl
0v2UJ4ETi2dsvji4E00o+BES3z/OTNOJwPvG8l0MnBszTmuwFEcO8ie0CyxQkzPx
RC7L0eVysOiqKclk9I0MRy3LoVoTfPU6g9bQ2YjI0mKjsX30/rD6NrUP9PSEbzlA
PzvZKU1EGiYgHihGHhVm3JI2+kfxYED607Kh43odSSrU/rzA9sYVro+Z0m7+25Wf
pnrKAMFLNEN8GvGAuWfeTMQY2MVZrN37Z5xPv4Anmj25JY4X03220ozic66/lfro
D1FR3gMqeU1CgthOrJ39UcjBli9zc5GC7RV739V46ecBv8UJwybZbJrH55p/d8di
mwIDAQAB
-----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 607522931177899650104656709991639025330962
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-06-11 06:26:43 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-09 06:26:42 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'www.cursosandravidal.com.br'
 . . . . . . . . [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
 . . . . . . . . . . . . . . . . [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 24403871284072210307734693118691789973851428857135382276955738164534118053300873015496982701847449951223403567837666036323950051178543134257569004816459765803865306882749424901338985015363626132963816452042603826315307063978675037946913819476323121357673077395324015164874206071022295260907673811650622858133142940855586596201076623836209587783372024185935369626064552589809550002701967543327960292470473132904909447778565503444091585794059082347094375346982294947316354758779892488202939285854753592475119719776399964632886448535676859250282543231251847707021090819779652955505354978515774813481506414444135513023131
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							583ee8871a0e750fe916833db045fd25f0844ee9
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (31 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.cursosandravidal.com.br'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.c.lencr.org/19.crl'
 . . . . . . . . . . . . . . . . [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)
							00f00076000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa34000001975de0f44d0000040300473045022100eaccec35ada028e82a2fec065e4a72a496250b208aa4275f671474c3522f168f02201a29baada3085a0ab9c2cf275d3c9388fc38a7aa22db3460e5744ed5fb10543800760012f14e34bd53724c840619c38f3f7a13f8e7b56287889c6d300584ebe586263a000001975de0f466000004030047304502201590f5ae7c8c79e4b94949f4a0731a4d969007f1efb329f952234f09f0b0114802210082a2018dc80191d73ad46e8f09e1da03fb0ef5fbdab1e70f73ff124fa813783e
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		0089f427ae0e3d6ea40c0fd081bd5f37e09cee26be4bef4e877327bcae6e0039b6246331b735684d32067a163f6b318780c37be83f2ce349006f42c8bf2674eb09252fbe3e13464970635b0f980f395adf165f6ea7f8641f5b398ed851897610c23c66caa4dd2410d0d376fa9dc5badcbddd0dee834ade0c453ef698c20136401e81d776b00c9db835698bf45065ba8b2f319a57b785acc62e08472af667805b1e759656e3099f505751b004a001da174842a37d6169cd5af8291bcf5ac1449aeb2816d23bd400611ecd9f6779dcbc4f31e003ef83db4a4f178957713b175bff8677a61a506ba8db71605251cb5051e00a125ab6bbd2375d61c516623629296b4d