mail.landau.com.ar

Issued by R3

About this certificate

This digital certificate with serial number 04:cd:47:e3:02:51:55:ca:b9:73:d7:4b:6a:db:60:83:a2:1d was issued on by Let's Encrypt.

With 5 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=mail.landau.com.ar

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:cd:47:e3:02:51:55:ca:b9:73:d7:4b:6a:db:60:83:a2:1d
Serial Number (int): 418302582831929839704919056446689049289245
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 4b:06:8a:eb:62:90:94:bf:7e:d6:49:e7:00:97:ec:f0:67:62:a0:de
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 4b:0d:7b:ff:5f:23:62:64:ff:ca:79:92:1a:7b:73:88:08:bc:67:52
Fingerprint (sha256): 8d:63:9a:af:6f:e2:ec:4c:64:53:3d:4a:51:1f:b9:46:41:97:1d:1d:ae:6d:23:4e:8c:19:f5:42:12:e3:d1:2d

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate mail.landau.com.ar

5

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.landau.com.ar

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

cpanel.landau.com.ar
landau.com.ar
mail.landau.com.ar
webmail.landau.com.ar
www.landau.com.ar

Other certificates including the domain name landau.com.ar

(limited to 100 certificates)
mail.landau.com.ar
mail.landau.com.ar
landau.com.ar
www.landau.com.ar
landau.com.ar
mail.landau.com.ar
mail.landau.com.ar
landau.com.ar
landau.com.ar
landau.com.ar

Certificate

The complete raw certificate details for mail.landau.com.ar in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4skeYFX9d7OqGyt23Lca
QIH7kbU/6owpFKQibi6yjSG30/diuZHM/x6+kbYAyB9kcIyUNJWjbps+RvUxFyA+
Gf5jeXn4XbwYteHgHXUAp3x/EGwUxawwyeeK+WCoIbGZCG0zRDz5MYmShhD45+Mc
WCSGQikt0Z19RC4SfqOMBdCVs2tYJ9ukPNFJbhoLueDNd+vpxqqt2j+KaY4TmZXo
sh6teKORYmFdHhQfcIBhSgH8U4RrQpxg1NfUumB+zx4w2zOV82xRjbCIhV0W/xzp
bZKNaxKBzcHPBDK9jpFaaHf6SvSHpBgxHYLjd97b9trymJWvDjHCzVCsu9oRzkTG
BQIDAQAB
-----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 418302582831929839704919056446689049289245
 . . . . . . . . [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 2023-07-30 15:40:10 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-28 15:40:09 +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 'mail.landau.com.ar'
 . . . . . . . . [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 28629032228641577077983705451277816934043691236862164240450397900349874227641684420343085466082279942670776436621495988389917788979981396771860825530287654802636775927544538610023419537502987091719599234935178441106252397890221842545469663527904907161190778479478145376202340777832875987159736611254673186795733388399806456481012029696160977238813396154379729130598409728554600304276538677967332613192680109225736331960641790129323195586831322292634570564743875392301955446084032893250005405522018556197825391471781565180414927789961109902423412951996895949427454628751908997966634400442425065878151465662222552057349
 . . . . . . . . . . . . . . . . . . . . [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)
							4b068aeb629094bf7ed649e70097ecf06762a0de
 . . . . . . . . . . . . . . . . [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 (101 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cpanel.landau.com.ar'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'landau.com.ar'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.landau.com.ar'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmail.landau.com.ar'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.landau.com.ar'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000189a7abf0ff0000040300473045022100d5c4e2a1b32c1a0cea72a853aa07eece72daa28db4b022a6fd115d87cf3b5a2902207362b05eb3f9e2c29fecb353892964a03bcb15fd2262ba0aaec912edc771ba9a007600e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e00000189a7abf0f300000403004730450221008fc7822288370db6c331d1b47f7d2b5e24ec5db8966a3c8d26f3ed6c8af7b12002204b4ec2f68ea46fd20f21c8921f56c25612e0d243b6b9bd5794284e301eaa7b92
 . . . . [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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