www.xbit.jp

Issued by R3

About this certificate

This digital certificate with serial number 04:79:38:91:c0:cf:28:84:c1:ae:59:8b:c2:e6:ed:ab:e0:12 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.xbit.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:79:38:91:c0:cf:28:84:c1:ae:59:8b:c2:e6:ed:ab:e0:12
Serial Number (int): 389698503685918396939260074968109147742226
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 2d:bf:71:8d:0c:51:b5:dc:88:b6:8e:7a:72:13:40:27:cc:1b:f2:4d
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 50:fa:12:3b:06:22:9f:51:03:bd:d8:cf:e6:a0:e7:ee:49:92:b0:b4
Fingerprint (sha256): 16:d5:29:40:9c:3a:7a:b7:f2:6f:31:bc:09:4c:e6:d4:bd:bc:bb:ba:62:f1:5f:fd:e4:82:ff:de:c1:17:ab:ce

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

Revocation information

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

Check the revocation status for certificate www.xbit.jp

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.xbit.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

www.xbit.jp
xbit.jp

Other certificates including the domain name xbit.jp

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cs260.xbit.jp
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cs039.xbit.jp
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cs269.xbit.jp
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manual.xbit.jp
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cs261.xbit.jp
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www.xbit.jp
www.xbit.jp
www.xbit.jp
i16-os197.xbit.jp
www.xbit.jp
cs039.xbit.jp
www.xbit.jp
cs046.xbit.jp
cs031.xbit.jp
xc519.xbit.jp
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cs075.xbit.jp
fs220.xbit.jp
www.xbit.jp
cs051.xbit.jp
xs660.xbit.jp
manual.xbit.jp
as319.xbit.jp
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ps119.xbit.jp
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fs220.xbit.jp
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cs068.xbit.jp
fs221.xbit.jp
cs040.xbit.jp

Certificate

The complete raw certificate details for www.xbit.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA84XFi9cYPJcBibj8K1aO
POVC2umu5CiwmMlDZHVe+bdbQepg5Cj8YwfxEU3aL3Ceb0WKFmPF3aXGcJ7yLUdZ
jf5ReC29bXyq7/hpW57qg8XHqf7O8hZyCgL3vvrEGsPQK2d3LQdbLEE8q9ApnoJb
296C+rF9WPIEHqQtgPQA13pYDw6rPFwifafi4WSOv+9+CCcNq5HeYlIEkHhLC0U6
0HHtVEHi0VcShV/aafYeOOH0H4RmOcB0vpFckJY360Iq+p0ddqiS4MHj8pWiWzJi
Ou3hH0jYKyj1D/+DkfwvwsbI/6wG/bnd/sJGfVKnpHyPSZlXurBeXnGZjUyeF9cE
IwIDAQAB
-----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 389698503685918396939260074968109147742226
 . . . . . . . . [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 2023-10-24 02:00:09 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-22 02:00:08 +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.xbit.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 30741873373343768674549750136717368082479213472796900881241623366473970792415716353551529866631575952134256350686844739133808184706533403774497899080306631104326154902502572958425783949658383430505458017562074759148023165836791624018870912674610797726336686328839848700974889141264038128070861004688284622191975294027217087121102800651149337162127206280863052348058480010130185112312440749793892007424478986819644787984038116141317698017705938795474385735096369226466478368898303681852288394231241286676910521734352634939454971386568543661635739438735334146628612457272401504794817315862885950295076757018986419782691
 . . . . . . . . . . . . . . . . . . . . [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)
							2dbf718d0c51b5dc88b68e7a72134027cc1bf24d
 . . . . . . . . . . . . . . . . [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 (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.xbit.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'xbit.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)
							00f0007500dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b5fa019c6000004030046304402207259decce799599bcfb99b687217c5f290dbf0b7225daf631c8776c336401316022058275103f1460ee543fc2f8929541c3d4e1d143c83f595ac1c496103e2fb8f8d007700eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018b5fa019b30000040300483046022100e1376607b985543c7cffb525b65fc4a5f690a4251db16470b031def8e9fffcab022100b4b1d2b5ff76cf32ceb8f97a6e46462de113f0f700cf35447d0548b962227c64
 . . . . [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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