DV SSL/TLS Certificate for andr.mu

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the andr.mu DV SSL/TLS Certificate

This certificate with serial number 05:e1:5b:4c:13:f3:62:62:26:8a:3c:01:68:a7:75:ea:d2:e8 for andr.mu was issued on by Let's Encrypt.

With 2 subject alternative names, this certificate can be used to secure multiple FQDNs. 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 andr.mu 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): 05:e1:5b:4c:13:f3:62:62:26:8a:3c:01:68:a7:75:ea:d2:e8
Serial Number (int): 512246316982838737651753485969044930220776
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 58:c9:b2:aa:68:e6:a5:48:cc:d8:2b:e8:42:b2:bf:7f:be:45:66:68
Authority Key Identifier: bb:bc:c3:47:a5:e4:bc:a9:c6:c3:a4:72:0c:10:8d:a2:35:e1:c8:e8

Fingerprint (SHA-1): 7d:4a:69:e4:37:d2:c1:c0:ad:93:f2:7c:e9:20:cf:55:29:13:e5:19
Fingerprint (SHA-256): 71:ee:40:22:29:23:7d:9f:d9:cc:8b:96:c9:5a:01:db:bc:01:3b:7e:ec:93:58:54:34:18:4d:1e:e4:a3:3a:f5

Issuing Certificate URL: http://r10.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/105.crl

Check the revocation status for certificate andr.mu
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for andr.mu

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
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for andr.mu in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmJhY6+zLtneB6HAOhyIx
79JjY2cBnJBOEBaUnPUZtgUwVraCQWLUMQt5wNThwTYTH1xwFiHQHFMTjDwMjF0V
R/jHlClBj8Ljsim2G3eNqHPq2GORN9ImUGGhBL36diIGpaA93AdLj7cGJLYXki7J
rtwWLCzDbJQjLZ+d1EDamCY9Z4c3tkyko+5SMeOHLO047nCltZh9w4eW+y5FbKJs
JP9jQrbkfNRfa5ZzJHoMpYlohvFxA3lTDogcblql8IAMZg2koiC1uQkcADWPPImn
ioxOV/0eKBk6Y9BWA+n1Mg03QD+akHEz19e0fkFItAWqjvdlNoeHZsr/bYND70is
jQIDAQAB
-----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 512246316982838737651753485969044930220776
 . . . . . . . . [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 'R10'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-05-18 22:52:40 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-16 22:52:39 +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 'andr.mu'
 . . . . . . . . [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 19263347633048637904692409058500491957070341204876476874983828893421060284081528266002883381108131736172778098833779461216977020764112095699108764643897576175258787597583012761752311375605925721305183168406526961070832150690960029045816785206624063972810366922014338772688300000899628727731593792290148494731204999571886928243242555312269941438653443904869106920591101460150914693266258075324063200561571344232505460652570727187152655534343387663918531899742417430524850684012711339995500442655256218389876579261753188956877546899194731245476235443203379388615826237123766274333248477776287536702101206849220837420173
 . . . . . . . . . . . . . . . . . . . . [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)
							58c9b2aa68e6a548ccd82be842b2bf7fbe456668
 . . . . . . . . . . . . . . . . [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 bbbcc347a5e4bca9c6c3a4720c108da235e1c8e8
 . . . . . . . . . . . . . . . . [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://r10.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 (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'andr.mu'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.andr.mu'
 . . . . . . . . . . . . . . . . [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 (40 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://r10.c.lencr.org/105.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600dddcca3495d7e11605e79532fac79ff83d1c50dfdb003a1412760a2cacbbc82a00000196e5cf01bf0000040300473045022100bf41a1ce2bf189d5875c97f7d4bd639ce7c36c15a741f3995a893e17e004304f0220232618615b58efcc47445805125064ab0abff351072820ca148109eb0695a3d8007500a442c506496061548f0fd4ea9cfb7a2d26454d87a97f2fdf4559f6274f3a845400000196e5cf09510000040300463044022056d3c8e70d6d8397631fdf40f5f16583e23a58e8b324c0ecec0a08322435199502202a81f9206388dd2f25c7fb66cae47babac6a5814d82ca5b1ea86ee7db3ccb2c2
 . . . . [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)
		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