coursedog.com

Issued by R3

About this certificate

This digital certificate with serial number 03:e6:0b:3c:50:fb:69:30:71:0e:3d:93:a9:69:b6:01:b9:13 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=coursedog.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:e6:0b:3c:50:fb:69:30:71:0e:3d:93:a9:69:b6:01:b9:13
Serial Number (int): 339616736875373324272282181368154857519379
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 6d:08:11:20:7e:f9:40:7f:c2:8d:6d:7e:c3:bd:2c:73:8c:6d:e5:a8
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 1f:00:6e:92:28:e0:86:92:07:e0:aa:2a:9d:53:6e:e0:86:d0:80:45
Fingerprint (sha256): 27:14:10:b6:19:c1:59:3f:f2:ec:f7:bb:95:f6:eb:41:f2:64:4a:ab:f2:88:b5:dd:bc:57:c0:85:e4:09:43:4f

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

Revocation information

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

Check the revocation status for certificate coursedog.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for coursedog.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

coursedog.com

Other certificates including the domain name coursedog.com

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coursedog.com
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blog.coursedog.com

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAy4bLGBmdDA38g5aqBmtk
pWDIWUPUJjGTavKpZwvDpZGR7ycuRJl/J1+OGV4hxFx3vi8De84hoKHWOJbwNuKt
1qluu2lih73IoHC7HQNSHT7tPxmF9UL6sgk3mUO1ZS2YYtGQrzZhLVbEHIl6UNEB
VNuF35Z5DCRZB4X44QsxzfjjqrmYt0lW//U/dPrA4lprSKRf7S/7YhHOpmvWhJ4P
KTf2cQB9jgOYXj3O8EGsN7jCBkLpdr55gip5rlMmVFSdXeH3U7zpE62bqjFLzjAq
L4EmER3HytfnepeurztQjEhDAmcEygrBzYqCSTJGoU9H3BZWGWlItnewoUT1hEFA
EQIDAQAB
-----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 339616736875373324272282181368154857519379
 . . . . . . . . [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 2023-12-21 00:18:14 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-20 00:18:13 +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 'coursedog.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 25692844979668168303875764270858761745596958107253112131976628803118804339735646900424738719370151851632772581315048995566560523164700447276204714334967581493941777539714685661872201947502797908512290463364235903637145571145236251577316899768996869173951625991018314098636649577809204054020700523658238104883853234236673894420564477738484164360260311794327654722277027389747934318615352687633546373600883048236774965560973084432349623073304229653514949722583908807806904515894250764585472484479571518706279522913561048739128443949778845768119711823022809232751006890854938979156971093851649744929680988126337568948241
 . . . . . . . . . . . . . . . . . . . . [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)
							6d0811207ef9407fc28d6d7ec3bd2c738c6de5a8
 . . . . . . . . . . . . . . . . [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 (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'coursedog.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c89f3a06b0000040300473045022100eb341d13708b32bcb0532608338f791c7014782938aa851f75f7925672847b3d02202c12f19614302a9399eaea4c47218e00417ade4b3729afa0c6d732506d54281a00750029d03a1bb674aa711cd3035b6557c14f8aa78b4fe8389449eca453f944bd24680000018c89f3a137000004030046304402204d41e157ef52e5340268b012d8429add9a36e760c6b91f90e04811a86bd9966c02205e2b21683e59557662a2c549d1a9cae648a547111abfb9a914198350b5b30847
 . . . . [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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