teachersnow.com.br

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:40:51:7f:f3:a4:20:c4:e3:03:c5:dc:7e:1e:4d:88:3d:bd 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=teachersnow.com.br

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:40:51:7f:f3:a4:20:c4:e3:03:c5:dc:7e:1e:4d:88:3d:bd
Serial Number (int): 283223261109209507591858686275007931760061
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 06:a9:dc:d9:14:3d:50:f5:1b:98:ed:b6:dd:11:e7:bd:16:b7:0c:fc
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 0c:37:6d:23:20:6e:f8:dc:36:51:05:22:dc:01:b6:d4:50:f7:72:55
Fingerprint (sha256): 58:48:49:1b:91:87:46:0c:1f:ec:2d:eb:c9:b8:1b:ae:22:fe:af:8c:5f:bf:50:4b:ea:2d:ed:02:b8:81:c3:b9

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate teachersnow.com.br

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for teachersnow.com.br

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

teachersnow.com.br

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0iA4+dUKWgMscjCweisw
eg4/A08uxrfHKNwGnA6/z+ON7ZytWaAgvx+q+ESqggfVOY68YgsEiTnHoDhpggrW
rb62Cf/HBei6zD4wuJACFRM4KtSKWHIFsj9jLYaqaWiIm/Cz4ofs51wSAixI89ll
hMA9p+/Uiat7X3Y3nYhrfxfBQ4JRT6jn5O98c8qv2MsCW3ZNTob5WR6WJxBS2QWk
//tVMMjOThi69wah13bIFcgl3pBlD/yuRC0J991TqWV9CYgV1yU1tsh49CEXZD82
jXqtE4UCUJ2VR4GwrRhcpoaxzcOrhTyEPnYlHL2LnEbQ2JJKRdGMOegOsVdlc3e+
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 283223261109209507591858686275007931760061
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-17 00:40:48 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-15 00:40:48 +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 'teachersnow.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 (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 26525933580473082111902249977497198299994490395761839978378162005556210476922102498228393338084215176214197038894889124325278730686380955455712746447605380648917731815551589204020578061323224350018416055347721947400544776263522574153747128000271249321641389996925660781157998197386549805823258347667957672573970034102118826753107869834487674216475479004984314527749613089221470795786318433709790651477915732855492285840438387760600312452607599772433687779429213040087417300203697244164894481552935821991050859377758894995681469085389619826728311635349456383635012773065020430746666490592639036774769513815608292523649
 . . . . . . . . . . . . . . . . . . . . [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)
							06a9dcd9143d50f51b98edb6dd11e7bd16b70cfc
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'teachersnow.com.br'
 . . . . . . . . . . . . . . . . [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 (69 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [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)
							00f0007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016ac372e7d9000004030046304402206318fa672658202d69c6b1afbc5c1710e495e95cd139a5bbc5a9683c35890f1302200f88f476f666857985512e3428487f5302eb1baeb7de9603990332dd6cb9ffd8007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016ac372e7cd0000040300483046022100bdf0286a897b8ca1cecb1084dec14f48c4ee254571faf6950f1f65bc28b418c1022100ab13c35a9b4f27ef0e31db58f436caf7c5023a3657dce40a80c1f925092f1c43
 . . . . [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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