www.1stplace-science.jp

Issued by R3

About this certificate

This digital certificate with serial number 04:87:73:66:e5:4d:1c:4d:20:03:f5:ef:86:0d:bc:8f:b8:40 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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.1stplace-science.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 04:87:73:66:e5:4d:1c:4d:20:03:f5:ef:86:0d:bc:8f:b8:40
Serial Number (int): 394540658745943641600435996217473409988672
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: dc:3f:fe:ec:8d:40:6f:4c:8b:1f:c7:ae:a1:9f:b1:5c:31:1c:bf:62
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): f8:d8:d7:e6:88:40:4f:03:92:3e:98:f7:52:85:c9:77:cd:23:25:28
Fingerprint (sha256): 8c:ca:fe:9d:df:61:fa:69:ce:00:ed:2b:72:4c:99:f5:c4:3e:79:e9:f8:1b:04:b7:a6:cc:cf:6f:0a:bb:b5:e3

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

Revocation information

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

Check the revocation status for certificate www.1stplace-science.jp

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.1stplace-science.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

1stplace-science.jp
www.1stplace-science.jp

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Certificate

The complete raw certificate details for www.1stplace-science.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxjbPyAXiq14ExC2viu7F
Ag27B26/Mm+FTvq9YE5tDConz6fOm0t8JusAl3xpd/4irnzKljLGoi4J6t3r4ZHR
Xdc94dnPMVUecfJWtgA1/99dLGTn8Cjh65/U5tD6IxCJ4YXLRxqaRas4q6H1zbsc
/5XUZdPv7+oFtmYFkUIy4P5AMhItxliTYWH27b0yYN2h0k+7Qpj8CUtQFhpghhqq
oaPi1mH/xxqMgb6qH+n6GYUvqyptW/hsoj3amLBy9gTbhiPtDTdGD9v1lISPI+1Y
au/fyVGNyjHBKUtjbKmsz04L0AX8CWr0hF5Ibnr/xU9clPgq2GlF7cSL7MVgG7LX
5wIDAQAB
-----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 394540658745943641600435996217473409988672
 . . . . . . . . [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 2024-04-17 07:08:23 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-16 07:08:22 +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.1stplace-science.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 25022213013223321968006158743571235028671316356801105959278599909668983904370353639304829453294337489987929046881003193203740312131174012288044227765112957480061560553558347358264339624318039361322128512262776435043848583587887697655991893509561877857424030436641217158867430818416854228310770642574047160432870093882293005505573567859908309029814093697204747900786149011737076968118769438510345455350362823981044184094508834649833569296749813196714040918958454407398051336225997394502058849935745751768182245099327233083598665708037474437851739779464681371265780115069284203298956020097962406152773033432180415715303
 . . . . . . . . . . . . . . . . . . . . [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)
							dc3ffeec8d406f4c8b1fc7aea19fb15c311cbf62
 . . . . . . . . . . . . . . . . [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 (48 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '1stplace-science.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.1stplace-science.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)
							00f1007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018eeb198a2900000403004730450220702488572347ce0dc282381ed7d2524c0db3ad57d6e50fa5b0356bc26099df73022100b47362f084b0d9f9a0f2505f53478570c9cbf2d5c15f3dea94577f7b179caa53007700dfe156ebaa05afb59c0f86718da8c0324eae56d96ea7f5a56a01d1c13bbe525c0000018eeb198b060000040300483046022100805ed38ae6067a4a9248dba65f03ae9c5d7f8ca52c977ad44ba67f879ac06c91022100c1cd9480954ac545bfe37be4e76d1b74522339685d43c181cc99e4c6492504a2
 . . . . [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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