www.kitchen-city.co.jp

Issued by R3

About this certificate

This digital certificate with serial number 03:d2:8b:86:10:b6:fa:f7:3e:22:78:7f:b7:da:50:dc:66:1a was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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=www.kitchen-city.co.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:d2:8b:86:10:b6:fa:f7:3e:22:78:7f:b7:da:50:dc:66:1a
Serial Number (int): 332981613646886713626994429739103770404378
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 29:10:71:56:34:33:eb:36:75:02:62:01:97:52:c7:30:d9:8b:80:7e
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): a4:31:ad:6f:ce:2c:8d:fc:44:48:ba:92:74:e4:dc:0f:5d:4a:eb:d8
Fingerprint (sha256): 5f:2b:6e:ae:04:39:51:e1:4f:12:25:a6:3b:35:e4:6d:f0:c6:b4:1e:a9:07:ef:0a:92:c9:28:ac:66:04:18:ac

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

Revocation information

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

Check the revocation status for certificate www.kitchen-city.co.jp

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.kitchen-city.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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

kitchen-city.co.jp
www.kitchen-city.co.jp

Other certificates including the domain name kitchen-city.co.jp

(limited to 100 certificates)
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test.kitchen-city.co.jp
www.kitchen-city.co.jp
www.kitchen-city.co.jp
meeting.loxtonloxton.com
form.sim.nabni.sa
booknow.xuanearspa.com
www.kitchen-city.co.jp
helpcenter.vortekspaces.com
www.kitchen-city.co.jp
support.myqudoz.com
www.kitchen-city.co.jp
www.kitchen-city.co.jp
building.kitchen-city.co.jp
www.kitchen-city.co.jp
www.kitchen-city.co.jp
www.kitchen-city.co.jp
www.kitchen-city.co.jp
meeting.loxtonloxton.com
www.kitchen-city.co.jp
www.kitchen-city.co.jp
www.kitchen-city.co.jp
yoyaku.kitchen-city.co.jp
dms.uniworld-logistics.com
prenota.caygri.com
building.kitchen-city.co.jp

Certificate

The complete raw certificate details for www.kitchen-city.co.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9Cj6xvGO2v8QqyTko5Ke
IZVa0Q9bqZ7W+cKeaO0gWClVGkknfBnTLJbGX6WSJ3IfO+k7y58ZqtLX+8QlyZ7D
IbfcpppffDOix/PqaXyz7mQp4Ct9CFHTaqqLn2OwhWIIM7q9RNRIre4Ft66FXDDZ
WLz/4+LxrsYBqwZOkuqeoR6OKSZL4uf8skUpB1ZbYq0FD04LBZ7vCnFENLZnj5Fs
7NZX+OT1VkxZO3DAXcKkTEeGnhNBfLQo5S3+FOS2iLoURKVmao9ZpzBsiEyBcozV
bVd974DtzV+IzEHHx5aAPq5XQFogudMSL+E3KSDFkf7TukzZFGlXEaJ2GyEBkh9U
kwIDAQAB
-----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 332981613646886713626994429739103770404378
 . . . . . . . . [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 2023-10-15 22:09:48 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-13 22:09:47 +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 'www.kitchen-city.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 (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 30822354204715016723472457272951270406507486150257159213967559903281467564438085005226943123151128675090564933746410301679208761618011647584925646786447639979662615354490149386514500815989515752322202552340158691546523223569038587447718247615883963544833049605583880460086536960466769637623754055382179369427320631378529170442753097501766799186746460872354261682325466831704087385981239182464981531913958855283522819482856227472892123292676257521763115221368930402638854250674343340957102905442889297001028039024464909482846741577561142919305910226629530615980786313878022020439628323654451443391182222231923192714387
 . . . . . . . . . . . . . . . . . . . . [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)
							291071563433eb36750262019752c730d98b807e
 . . . . . . . . . . . . . . . . [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 (46 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kitchen-city.co.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kitchen-city.co.jp'
 . . . . . . . . . . . . . . . . [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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f20077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b359a55b50000040300483046022100925daf8f63dc7c1da77187e91a59f181d2b181f7869b432d73d08c6f268b367602210086b3c0ad3a356a939193c23986d289f2b525cbe473b83ee541a4e5dd702729a9007700eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018b359a55aa0000040300483046022100f4e3bb3201dc9548ca2304a5dfada2929df747e8b61e067d2f18cf8cebce19c9022100cfc9f31332e4647d8750bbc66aadf386a93e458fbd686185b449312cc8573962
 . . . . [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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