DV SSL/TLS Certificate for www.kudocloverclinic.jp

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the www.kudocloverclinic.jp DV SSL/TLS Certificate

This certificate with serial number 06:17:58:3a:ec:65:8f:6d:6e:99:ca:fc:a2:cc:c2:ce:5e:3a for www.kudocloverclinic.jp 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 www.kudocloverclinic.jp 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): 06:17:58:3a:ec:65:8f:6d:6e:99:ca:fc:a2:cc:c2:ce:5e:3a
Serial Number (int): 530617488041285031683570002967753988660794
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 51:ea:54:42:94:9e:e9:d3:eb:7e:fc:07:9a:36:43:2a:6b:a9:f1:64
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): d8:48:70:f0:a9:b5:76:f9:c8:3e:de:52:40:37:40:de:10:61:2c:d5
Fingerprint (SHA-256): 8c:8f:af:85:5f:92:1f:4b:96:d2:37:0a:fc:9b:f8:cd:24:c6:66:38:7c:3b:a3:6a:32:77:ee:f8:c6:fe:46:a1

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

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/59.crl

Check the revocation status for certificate www.kudocloverclinic.jp
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for www.kudocloverclinic.jp

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 www.kudocloverclinic.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3fGocoSChz3X6ldUhQQg
O6RbC2ZTxvvLfUSmUBH0ucWkctaXYTkKTpptf7sZAV37G4C2U/a5r7I+UDE91V5H
KVK5cevJQhHz1tL7Df2IzZq8Szs2ivvFaYyYEK8zxJf6Zi7yJiSNcDrbzEYnGtv6
ITtJzjflDeunFXsX7Hj+CSF+YNXoLqyVtjvtCVrLZUaRY1fE78K8YyAojmiFVD2f
2ROKORw/flXwTy/mzPI9SpKE/us4TKhYIXRIOjJLNz+xcjPZZOkjIP+t/sqHKBH5
Dd2GlDjOoSaQ8OM2q9xNtggZJOkkhnhzAjOV13f2CO/aw/K9DOv99HshBxxaSFCt
4wIDAQAB
-----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 530617488041285031683570002967753988660794
 . . . . . . . . [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 2025-06-06 03:21:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-04 03:20:59 +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 'www.kudocloverclinic.jp'
 . . . . . . . . [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 28017831397394611962260701989377015346453284432069636004017361883100959433748116099739155981293750316530356181115927396471625083383742427910260668073913585241431018137745611604496817093186676746930283200553668594814189157946288382652283202924569625131425095115612241373361031358460321506333971575340850477441066450421697190616512719175529225383324054338944410010787114916034778062871779132170015968419538532741986499387540005570976144756168776021811712739117234162606588868972741930780579179036265787744538437082393823232706204615962065817684541529183164736454167665410832866435708047707163012000853860510018663656931
 . . . . . . . . . . . . . . . . . . . . [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)
							51ea5442949ee9d3eb7efc079a36432a6ba9f164
 . . . . . . . . . . . . . . . . [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 (48 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kudocloverclinic.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kudocloverclinic.jp'
 . . . . . . . . . . . . . . . . [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 (39 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/59.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)
							00ef007500ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db000000197437723bf00000403004630440220776d550805844949d9699445c89b0efb8b2790be4dc67e12c166f221cad536c902206146fe5e0e810595550408bc062b9bd1dcf5da7bb1d548618f071a81f5d3fb05007600dddcca3495d7e11605e79532fac79ff83d1c50dfdb003a1412760a2cacbbc82a00000197437723f00000040300473045022100a4ec1ec9a93c7f3bae72aa4ea328d44e3f5947373054d0f286c432d22d38146b0220690d50ce0d5fcfb81734a26ef836cd3b24effbe45a1fa67a50d25dce67573c34
 . . . . [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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