usemason.com

Issued by R3

About this certificate

This digital certificate with serial number 04:e1:52:78:79:ed:69:5b:17:60:52:24:5a:77:00:0c:ab:27 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • 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)

Certificate Subject

CN=usemason.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:e1:52:78:79:ed:69:5b:17:60:52:24:5a:77:00:0c:ab:27
Serial Number (int): 425122298528510770753053251483894689868583
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 55:41:a5:c7:46:9e:a2:ab:ea:a1:4b:ea:fb:99:33:69:4e:8c:47:a2
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 18:6a:44:11:e4:02:ad:60:5b:d1:82:f3:d2:36:5b:fe:99:3e:00:ce
Fingerprint (sha256): 2b:b1:b2:42:82:3b:25:ca:d6:db:8e:a5:82:46:b9:62:8a:3a:de:e7:9d:68:82:0d:4a:c8:9c:e3:31:76:9a:50

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

Revocation information

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

Check the revocation status for certificate usemason.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for usemason.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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

usemason.com

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0YjxM12kpDZEVhbJZUiL
ixy9Ks+iMBaEZrh0CpChU3Fu9Zp7ahRaALVaLpWS6bGkAGeoySZRo2IQM2edTfOb
zKb/BowXwpLhc8cx7yqozDTODwdlWMtrs5X+uvIsG1JiVrAHMPtTww1xAxScgPdl
E9Be0vRnLrRtpPhfT3ZCCruukNaPCPYtN8WDucUzro1d8pGTPdFkvSyi8uwXP3LD
pDzDa6sudV+LxVm1TBEEdlehNSZyQe7B2umWl/bfaEs9S3Es/RILLeXh5qh/Ul2N
5wBWpBj1JjoO7Wbof3sn4HAAU7bZPLLBIqoeuGwOczmycEKntXbINBi/QVXHEbDs
uQIDAQAB
-----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 425122298528510770753053251483894689868583
 . . . . . . . . [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 2023-10-17 02:14:14 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-15 02:14:13 +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 'usemason.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 (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 26451334448639466196073391566048870700398097043159256752959933794055467320376950725875509765881723816545910404823136250687581369012288763685970124839349646309068423824453989579046567462688060948306384153177895568751962979382232422075130766448170573055310387192311890756864337777333796485753644745220819575833327297528682044495397416022431063322473600730405938711056186400568559882535998432107629751052276974189062890907591068709649986550806634762961814801911012417420255174693451485152200416010386803941256330490877229621002068401613628789133805976319526984466167850133170972408368906787074699677556563602347618528441
 . . . . . . . . . . . . . . . . . . . . [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)
							5541a5c7469ea2abeaa14beafb9933694e8c47a2
 . . . . . . . . . . . . . . . . [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 (16 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'usemason.com'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b3ba07b800000040300473045022100a3accc3e7a76acbabdfcb9b2a23a1906a25234e6c5ebb9f3469abaf01e8984f602207fb032e3ed717f2eab922095fdba991298b1329f23c4e6035c4e529cb499f1ed007700eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018b3ba07b8800000403004830460221008ee91fc24dce56915221820b57b9b34f37448711baa7db1c322c2432dfb88be8022100e8f858c1ce7ac3fd30bffe461f84681888b39c9859833e5263ed6ef1551d90d7
 . . . . [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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