xenon.co.jp

Issued by R3

About this certificate

This digital certificate with serial number 04:73:71:76:4e:d0:b3:2d:64:4c:8e:9d:ed:cd:a4:bb:3b:c0 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=xenon.co.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:73:71:76:4e:d0:b3:2d:64:4c:8e:9d:ed:cd:a4:bb:3b:c0
Serial Number (int): 387732432976064772067948030842078523767744
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 05:8c:9e:a7:63:65:a3:df:1e:8d:2c:7a:11:7b:fc:48:16:93:e3:9a
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): f6:f0:1a:5b:7d:5e:08:fc:10:8c:21:14:ff:91:dd:c9:68:d9:f4:f4
Fingerprint (sha256): de:dc:7a:fe:8e:04:51:4f:3b:0d:b5:1e:dc:4a:80:73:75:ac:d9:af:35:d9:5d:26:6a:a9:c4:b6:57:d0:9c:d1

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

Revocation information

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

Check the revocation status for certificate xenon.co.jp

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for xenon.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

xenon.co.jp

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Certificate

The complete raw certificate details for xenon.co.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuMr/sDXiEKR7jTlT1P3/
9CnwjiNETqQlx/DJYfwBbwL0uoMd+L6JAcii/Sr0WGILcahDp+1WC7K+uFeaKpBp
+fxsilncmrqABml35BYtBviZ8VKhz8VuaVmrPwe3yyQUKbDc6CQG+yoTUJDcCXOz
a5Tg5pteQwKerHRmVmy9QIHS7DjwlboksX23N1wnOrZXdmQIGTvFH15z5VWEjRsp
Whc5ZJbWZ1Ix19EzK1R7Di5cELvtAm+M0xoElZ5MXz6WmQN70zritdtYHl460eQd
KkWPj1r3+5RxNSif1WAVCe/a9S28dCAQhDSCQ1qOsOGB/X2FXETswUZhG1BwPDMq
wwIDAQAB
-----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 387732432976064772067948030842078523767744
 . . . . . . . . [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 2023-11-04 12:54:51 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-02 12:54:50 +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 'xenon.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 23327950544278433776604014559111717234232574759939348552504774469221480349965673038096614035314708527996846010397252729808016777597858643773145007694541523280211490741137889795384936156763790945686822161463669063049989932406464249566811945495039277977196057609072348836198489930019232807994339525677392855030643514335738727454549823419699362208300397292434350305658712496492751733331197292129377262397800617797447289802087780192693578841319652381397224539722196339248317388745876428940719886420632540178627665985112200216238368189016811800354956021840599033526965723749098269076584723573164004918347378631765342235331
 . . . . . . . . . . . . . . . . . . . . [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)
							058c9ea76365a3df1e8d2c7a117bfc481693e39a
 . . . . . . . . . . . . . . . . [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 (15 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'xenon.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b9a9d734e000004030047304502201108110eadbbd1079a1b38df142f0f2a66ac1e6a8a852bbd5e2793b6f05618b7022100abc76ecccdffba970490776d06703d6c7e8079357b1ab205944df707d102345100760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018b9a9d738400000403004730450220346602f71db87cddead0e585f84f1532dcbd8915149b8538137fab9bc4969bc4022100defea02e87671a8effa2472ac6d17e6f7f2c8f30dd048521aaf40e6152bc6673
 . . . . [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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