DV SSL/TLS Certificate for www.kscan.jp

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

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

This certificate with serial number 06:a0:1f:e7:6e:a5:ce:94:3b:09:38:2b:bc:81:f3:91:af:35 for www.kscan.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.kscan.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:a0:1f:e7:6e:a5:ce:94:3b:09:38:2b:bc:81:f3:91:af:35
Serial Number (int): 577161302030556924299497095876136081141557
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: dd:13:55:ce:cf:fc:42:e8:7b:89:bb:fd:31:4a:d7:0f:c6:ed:37:2c
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): a1:02:dd:81:77:00:66:05:dd:45:d3:8d:29:f0:62:0b:a1:65:f6:e2
Fingerprint (SHA-256): a6:3e:08:46:df:00:95:4b:ed:7f:d6:08:1f:67:6f:c7:72:aa:ca:f7:17:02:ae:56:46:f4:a5:e8:fc:5a:fa:a5

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/54.crl

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

Advanced Certificate Properties

Technical details of the X.509 certificate for www.kscan.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.kscan.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzoS+HfIOWK+mB1/yswNq
36/FVnU1VXIJwnRYzH8khUOV4VdgCkgC7qp6VXNIYgUx1AkEUxRiTEl4pDzyuc/U
ZStXa3rDVfKRnCgolXKWPTJUfHB4Ls5+VqpDHOGQ7LWUvxvAXMTIbqMZqbCvIXd5
ZPTOdgXB7YA5w2ZSLk60vS5GeruCGYmkXgRzCOtyRAun6ZwMfFhxSn3PRbGK1571
dJR3DUT/dzL/3qAAC6a7EY9iDjWQpWWWhCXRvteRjf0qgjzimxMB8W5aEEBxrNNt
slPLR1tQ34c/slNtfv0R9R3x/j5tkNyi3tNaQ9CK+Gy6NoBBd9zs7j0bBpKiORBU
GQIDAQAB
-----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 577161302030556924299497095876136081141557
 . . . . . . . . [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 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-06-07 01:19:24 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-05 01:19:23 +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.kscan.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 26070548660624783097982150309348713749192870420320416992806695699174363529973687023140069074824761926316324223236064426524525352841230424722460650633118649745763322706220962357269132846672848689782653798272811383047375897674993552413843173312138890744522722924463181985845157181086119273256102646957419637800533098462655567694355300470609964601137103543540717952746987960748690910729358037616555290346913333782485552114488567675141597727913881103846946284063024497619729768106382124810202878599960899234274139448714402694394294755033083965604613353661742654850340413598650233391801198290682341994613013864523670508569
 . . . . . . . . . . . . . . . . . . . . [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)
							dd1355cecffc42e87b89bbfd314ad70fc6ed372c
 . . . . . . . . . . . . . . . . [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 c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [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://r11.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 (26 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kscan.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kscan.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://r11.c.lencr.org/54.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)
							00f0007600ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db000000197482e2bb7000004030047304502205bd388b8840f2d78f685dcf918ef82dab09c783ddcd6f319c2105bbca15ac0db0221008979c0371292b8a053c8544690cb595643c0d374b4ab5f3d47170fb0533115500076000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa3400000197482e2baa0000040300473045022100e779bfb24f3ced933268a034aba76f9fa6a51f16103f1f51104ce70c27e3a28c0220026378b25bd4ba1b2c6b40b10514a0e8a9f2f7dafe1ada90198c43f8b93b7ee0
 . . . . [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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