zentek.com.br

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:19:c8:41:05:e8:de:15:8d:c9:dc:70:d4:d3:33:20:e1:5a was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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=zentek.com.br

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:19:c8:41:05:e8:de:15:8d:c9:dc:70:d4:d3:33:20:e1:5a
Serial Number (int): 357222386118378949562224162117475236897114
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 4b:7b:e1:e2:7d:df:b3:76:f3:3f:61:62:5a:c5:18:9b:dd:df:88:67
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): e6:b7:87:fc:13:75:a2:54:16:5e:c9:89:94:36:6a:a3:35:e9:d2:a8
Fingerprint (sha256): 82:23:6e:2a:b6:82:03:5e:f5:46:67:b1:cf:b0:eb:68:05:23:6b:c7:5d:ba:cc:60:82:20:0c:8b:e1:fa:32:ff

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 zentek.com.br

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for zentek.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

www.zentek.com.br
zentek.com.br

Other certificates including the domain name zentek.com.br

(limited to 100 certificates)
sales.zentek.com.br
test.zentek.com.br
www.zentek.com.br
www.hugoguilherme.com
www.zentek.com.br
zentek.com.br
zentek.com.br
zentek.com.br
tekpro.zentek.com.br
www.junkdrawer.io
zentek.com.br
www.zentek.com.br
crm.wemade.dev
*.zentek.com.br
zentek.com.br
test.zentek.com.br
www.developer.bcregistry.daxiom.ca
tekpro.zentek.com.br
*.zentek.com.br
tekpro.zentek.com.br
matthewiannucci.com
www.ppsapplications.com
*.zentek.com.br
zentek.com.br
tekpro.zentek.com.br
www.zentek.com.br
zentek.com.br
zentek.com.br
rydpay.thinxcloud-staging.de
www.zentek.com.br
www.zentek.com.br
tekpro.zentek.com.br
bia-staging.noltech.co.za
zentek.com.br
www.benbellmann.com
test.zentek.com.br
www.zentek.com.br
www.zentek.com.br
www.uhladiku.cz
*.zentek.com.br
www.zentek.com.br
www.uhladiku.cz
zentek.com.br
*.zentek.com.br
test.zentek.com.br
www.zentek.com.br
metoda.app
*.zentek.com.br
mobile.energypager.com
www.zentek.com.br
aunclic.com
2022.bsjobedu.kr
www.bytecraft.in
bia-staging.noltech.co.za
zentek.com.br
www.teresaklaman.art

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyylFzdzBUHlaf+XtSCIb
wtWw8fuEXev4T7wUYUnZRWGuStA1kd5IDF5+zvEMjHyFHJflkp9hgR2vQvBXHm7x
lDo0idGZyn59Gp6wsa0/ZZQl2+Sq1/m+1BtyBohLu6X0QCzLfHfjIrKaKmnJmSc6
o0DmJl9jt1trTeoi1pBhqiC2QIpEKig/Bowvou8Zn4pbzSOsdrrVWcPXC7SuF4jP
JfRMhfvY7aBBr2Zonx7VnNyuwcIHx0/822kWyGCNFI/olL5NdlUkx8U3I8c7Kfse
HFxHkpoaW5+af6fZm042awwMh3jKcePBmnWlMZS1smFBTPD9s2VwRDRQKvh02Q4C
pQIDAQAB
-----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 357222386118378949562224162117475236897114
 . . . . . . . . [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 2019-06-22 20:06:16 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-20 20:06:16 +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 'zentek.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 25646728221440928109013957123072918193335859750838641244172417082365725292393381168382687655970702611210365601368405527592251347235260312595343048791295805590211992711017884937971997782681339984872374627519754288518992065713352140059144452377956831397255337212843424637008733409477018614910833317322534755490690680794887083728004157255414473152328448507185169630139970695224410108220792325129869873993872445415560311497276371804900848962708393519561560612232031597188053117239334510044848120183160416244609004300593797624028861443930388468983191007529595220225181707750054299856800567990602775980299396417383859880613
 . . . . . . . . . . . . . . . . . . . . [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)
							4b7be1e27ddfb376f33f61625ac5189bdddf8867
 . . . . . . . . . . . . . . . . [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 (36 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.zentek.com.br'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'zentek.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016b8102dcfd0000040300473045022072ff0046370cdefe98c01b42e9148dc645b72e96b7cc8091e0d7cf2553a51e48022100fde5b5c38f9b1027ccf9127b1289bfdd725cf29125e062c6d1b4d032e8adc01000770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016b8102dce000000403004830460221008c486c443c1cacb1d7df182774f0452f317cedfa7981bc625d3e2fb0a7da9df0022100c4d6601010d94c3a4a3805fa1dfc813419b05f1ccbf72ed2eb7894aad1647e2a
 . . . . [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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