help.14plus.jp

Issued by R3

About this certificate

This digital certificate with serial number 03:11:dc:23:ec:b0:57:e3:fe:3d:56:c7:26:c5:b8:05:2e:5f 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=help.14plus.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:11:dc:23:ec:b0:57:e3:fe:3d:56:c7:26:c5:b8:05:2e:5f
Serial Number (int): 267414274723019447916687747011012429426271
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: cc:7a:c4:9c:8c:c7:d4:82:a0:24:35:d6:2e:c5:ac:a3:22:6d:c4:c6
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): cd:ca:e0:3e:ef:5f:56:8f:57:91:89:ea:bb:3d:5e:d1:43:ca:1d:af
Fingerprint (sha256): 96:89:84:12:9d:bf:fd:91:8e:38:3f:bf:02:c3:ce:e1:09:c0:61:db:b7:73:a5:3f:fa:17:2a:0e:09:29:1c:01

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

Revocation information

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

Check the revocation status for certificate help.14plus.jp

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for help.14plus.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

help.14plus.jp

Other certificates including the domain name 14plus.jp

(limited to 100 certificates)
14plus.jp
store.14plus.jp
www.14plus.jp
store.14plus.jp
14plus.jp
store.14plus.jp
store.14plus.jp
store.14plus.jp
help.14plus.jp
store.14plus.jp
store.14plus.jp
maker.14plus.jp
store.14plus.jp
store.14plus.jp
14plus.jp
14plus.jp

Certificate

The complete raw certificate details for help.14plus.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5w3DYnjenlufIah6++5R
YiZAotQ8tj/b0pHhezRRrgOnRkNyPpyJAM07EEE6hrGmDMclUA0+3wwyzqPE+cpL
B2UQ65F9lCUuMU5uzF5fbjaWZyp3kkZ2qI7YPoQZf+Z5ph35tJkus20VzDb1ig2l
Mfh84RMtT59BGiqJmLY9ikqkdqpVMhN+FeUllfCX2rZdmTfXUMEFyxgi5BbhDQt2
249n4LFtK6yAibk6dVIYNS6oeYV7+ay5z8A6S3EkIbUMvVEy+SdIT7qqEvweTFbh
A1bBWl1NXPQpzL8LtX70yOrVKcAsP7NUxPiinsZ0zoQ0LzKmIFvxCk9iTyhXr7ws
iQIDAQAB
-----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 267414274723019447916687747011012429426271
 . . . . . . . . [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 2024-01-24 09:20:42 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-23 09:20:41 +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 'help.14plus.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 29167835344541451737048999990023823358362989357789631792986223806106239327114835712172703506728120312141473216027024594896663595888678814613837689653855245726504403843894834714218892393239256311966707312448433334118876927516203420989272498996603742117028565975872735487765995729356054139500354870608499187946141479953170963388770120318480686856275641982826708163501247284397012690962546985728867711916833057824915151831261212068839546013232338511214407452536547040555559763938541548160461947297631573054747521876570632875714192558035295395025508362836661772934292502795779774037059564209665919415121410991879330999433
 . . . . . . . . . . . . . . . . . . . . [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)
							cc7ac49c8cc7d482a02435d62ec5aca3226dc4c6
 . . . . . . . . . . . . . . . . [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 (18 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'help.14plus.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018d3afc7f400000040300483046022100d7516a7a77f3b8dd02412d67f249be98c60bb44581188128b015f6b4f066ec790221008c62b45d31a0d88345de43910cafbda25257223b6b72019ae910bf48ecf0b8740076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d3afc7f460000040300473045022041dedfa8355386592e02e3d0dc2fd35090f3781dfbd042061a517a615435208f022100effcdbfabf5754b178ae478363f99e328919e138aab710f32d1dcbaedcd752ce
 . . . . [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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