DV SSL/TLS Certificate for mads.preformator.com

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the mads.preformator.com DV SSL/TLS Certificate

This certificate with serial number 05:0e:d4:af:fb:fc:90:58:1b:b9:52:48:04:c6:54:68:d3:e4 for mads.preformator.com 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 mads.preformator.com 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): 05:0e:d4:af:fb:fc:90:58:1b:b9:52:48:04:c6:54:68:d3:e4
Serial Number (int): 440608092893645997309470102897217990349796
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 63:c3:6e:96:dc:bf:bb:0d:84:4f:ff:a1:d7:05:45:dc:3c:51:84:4c
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): 82:f7:75:60:3d:02:e3:63:3c:d3:d8:19:d6:d4:8a:35:31:2b:59:bb
Fingerprint (SHA-256): 4e:80:0a:50:d3:c2:e1:b2:f1:55:d8:c4:40:00:0a:00:d3:8d:7e:33:6d:0d:c8:72:92:a0:17:42:f8:3d:c7:8a

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

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/101.crl

Check the revocation status for certificate mads.preformator.com
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for mads.preformator.com

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

mads.preformator.com

X.509 Certificate

The complete raw X.509 certificate details for mads.preformator.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAi9W3/lEHhOupOIEVmv9R
a70meR4po0Bg37CNTTJmhq+2wIbTAbneTidfi206vn3MqtcAk97K3z/o8/toGkXg
IB0K962qSMXjrR9IUvLfR6e6jEfcuHo3fSde2t5tX5KKCV9CngRwjGC8IHM9c+i7
2RV4piA7nkLkExh3IcRvs5cStcjO4hl4PpXbjjN0njA8rsihBTdtJQhSY3dN7C+P
CaHCEBAZ2CGzrdmjlXg0W87JYlOM2yvdl7dvFf3xkJwriAUtL8MSRLomUVGA8SJw
pIJ0CeMw5t01a063GrwGp3v45IIWrVWD+pGbwsNckm3JTeuzHP7/kBhnj2rW2yqM
hwIDAQAB
-----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 440608092893645997309470102897217990349796
 . . . . . . . . [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 2025-07-01 23:21:29 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-29 23:21:28 +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 'mads.preformator.com'
 . . . . . . . . [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 17652513021128531496615485655345214129439144662923644173814282899272018627660253144347416434999419449187680105419770180324725427833026167418163055860737989733061526933524312141164354581039918917767790038248781548353987012044577793526628754701548553839127165095654111294778153784605076447192241404062343918920518936715020103809678309465244048030301426873835171930415312476563538664767727942236355170074652100057158425327318421338379702282797507860181073164212405045221437980711308954675503553887043408085382825220054039317510777603932218363077113211046605823868966421788300417885298457112932848130205274294233015684231
 . . . . . . . . . . . . . . . . . . . . [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)
							63c36e96dcbfbb0d844fffa1d70545dc3c51844c
 . . . . . . . . . . . . . . . . [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 'mads.preformator.com'
 . . . . . . . . . . . . . . . . [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/101.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)
							00f00076007d591e12e1782a7b1c61677c5efdf8d0875c14a04e959eb9032fd90e8c2e79b800000197c88133e60000040300473045022100cb04d33ce91f2ba5709d35d766f8057a5e7fa2efaa333bf0ad1513143fe2151b0220749500ab2f92663176a0dc99086c667e5c5380f4570b297597d8b66eed3098ff007600dddcca3495d7e11605e79532fac79ff83d1c50dfdb003a1412760a2cacbbc82a00000197c88143d200000403004730450220250545c76d626fa9ca09ca658c6db9d5d20fd6a04f7d76d3830a555ce7cd6814022100bde768d71664ab8502386468b0349604effa733041db790c9ab0b467c0f97c69
 . . . . [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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