DV SSL/TLS Certificate for ichimoto.co.jp

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the ichimoto.co.jp DV SSL/TLS Certificate

This certificate with serial number 05:a1:e2:80:44:b6:1d:bf:c2:e7:4f:f9:c1:d2:3b:5a:20:6e for ichimoto.co.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 ichimoto.co.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): 05:a1:e2:80:44:b6:1d:bf:c2:e7:4f:f9:c1:d2:3b:5a:20:6e
Serial Number (int): 490647962267750194812367643687979922890862
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 7a:e5:76:92:51:fd:9b:04:59:1d:b5:f6:e5:69:22:66:2b:80:a4:c8
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): 49:ca:56:94:6d:36:6f:99:1b:ba:f6:75:3d:2d:61:9f:fc:a7:a2:b9
Fingerprint (SHA-256): f5:37:94:2c:71:34:02:81:75:e9:50:c4:8d:f6:9f:7f:f5:8e:24:af:9a:e6:f8:2b:b6:41:e5:5c:54:96:99:4a

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

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/111.crl

Check the revocation status for certificate ichimoto.co.jp
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0rOW75TMJAP5KNF64Pyy
d9Zwvz9434nvpivF6CpydeyJEt2nDVUXeOpv69ABEBfP2TNZKoeOAQT08A5121hT
jpyoCK7MdpEyCDZoQdiXaL8+0MTkJIskC/KrFt1/3h3qcWv7by34TwD9dXfLLiJU
9ZifCUIbdEzBGFdp9LHNE7z9abTql/WKZhYBwoJZaUyYaZMfnDEa8LHk+QGTx779
U7rNZO9NDxckU1GcdW2dzO9MhELQWFa/28pmOcWWV+F9UJNZ7eAAiFjBLfDpIwIS
1jrnjwp/Q2nIVDYV8jX1d2siSzff+Nvhx4JOhZan2S9DtdTuaXDRSXC4YiFjghxA
bQIDAQAB
-----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 490647962267750194812367643687979922890862
 . . . . . . . . [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 2025-05-16 21:00:45 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-14 21:00:44 +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 'ichimoto.co.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 26598602971925383838150925023367613708792247304735251747611451361978141959100658825052151474365654315997818065479861184907922537293945127320102526192447813084501347225694211186397877938625750309577906119139627273886424653122031461902562554113606903954937298735834366759863109898435441849877124839736590138265005133996714519067320788470261428621350081229205346601891337834357808557025772226119962254400743005404409340281279167214560139975093083195969135768031428788367232506756349347187548022224109719754219477752230208504437462324612352208487516858848324429582751168088474384298943324623564142436649437053985729822829
 . . . . . . . . . . . . . . . . . . . . [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)
							7ae5769251fd9b04591db5f6e56922662b80a4c8
 . . . . . . . . . . . . . . . . [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 (38 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ichimoto.co.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.ichimoto.co.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 (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/111.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)
							00f0007500a442c506496061548f0fd4ea9cfb7a2d26454d87a97f2fdf4559f6274f3a845400000196db1bd201000004030046304402200d0d7cbe230b5a4bbcdb7bb7fa1e025faf6feee79aa112643cf9d83f355ac9af022002a6d1f9fa3e3062964c36b016592c62c14b072f26c3ede5bb1ea2d38d175d470077000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa3400000196db1bd9d10000040300483046022100b11032d749524c302c6778a2bfe5944f8de0cb5ecf945f925c3ed2eb46ec2554022100c0846f2f79c9488c2c2963c393a2214210c79e1113d75bb015a977d825f78d1f
 . . . . [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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