seto-solan.ed.jp

Issued by R3

About this certificate

This digital certificate with serial number 03:17:54:0c:16:18:c5:3b:b1:ff:ef:2e:73:97:12:dd:69:b6 was issued on by Let's Encrypt.

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=seto-solan.ed.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:17:54:0c:16:18:c5:3b:b1:ff:ef:2e:73:97:12:dd:69:b6
Serial Number (int): 269275070141846087845602054354932653189558
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 20:b7:09:f0:09:7d:e1:28:33:2a:14:5a:15:fb:fe:1d:22:1b:69:06
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): df:71:b0:c4:ef:e2:92:fb:2c:0f:78:6b:64:cb:f7:e9:16:10:16:3a
Fingerprint (sha256): 2b:d9:06:be:2b:16:57:06:bf:26:5b:42:65:e8:f0:c7:dd:03:7f:4d:c5:8c:09:b9:9c:3c:41:e9:69:08:db:e5

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

Revocation information

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

Check the revocation status for certificate seto-solan.ed.jp

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for seto-solan.ed.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

seto-solan.ed.jp

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Certificate

The complete raw certificate details for seto-solan.ed.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0WvGRm7dS1QEifyShzy/
M/Yc8gaZ2FYYCDECWJ8nRRV63EmPv9zXa4D8ibcuMMwjEfjicROV+Qu6jda9MPuW
nxNiMqET7CNfjPB+q+XlLGNlxwvi2XlwocQJsHA+8tcLj+AZw9JwBN60Iqm/vdRb
uruahS7wQ6mYcH4T8oDtOdhG0VOsvlHvLi/V8E7EcTQVulzOQPiochcr3TOSx1Q6
NXxi2xbbzrIspMRLBLU6XBNyTKFIpZV62nMOKLZczu1eqDxuZMVVRqUYE80PD7C6
LoobSLblPCJLEeupho97NL98Bxghn8L9v5seCboR4h6b0wYJgIqB3P3v/9TMX6gI
MwIDAQAB
-----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 269275070141846087845602054354932653189558
 . . . . . . . . [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 2024-04-30 15:09:01 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-29 15:09:00 +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 'seto-solan.ed.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 26436951330646913355099374648630690141918760016086337084775118226517979437905441802109569704912070228361006831223828559378713438365632908737062453749272858371241837876707643060307926828362930482806397762864775291448386415300033944484558976619355095540279209054963759162078642442748407573610200120228252000004236759422722029341966455251495694229293064370937926985860587410723571436122033875797743712514590070411035147779870905501461936030375233049160212485062196069589991389343499490471366802299733765721531147131367719489438715719466250639567272103457534420534136163495354965437178094198710478443673448141154796701747
 . . . . . . . . . . . . . . . . . . . . [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)
							20b709f0097de128332a145a15fbfe1d221b6906
 . . . . . . . . . . . . . . . . [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 (20 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'seto-solan.ed.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)
							00f10076003f174b4fd7224758941d651c84be0d12ed90377f1f856aebc1bf2885ecf8646e0000018f2fc43e420000040300473045022100826632e7b7df8466ffa61862d9d8ad16a710f035f9823d0d9950b005b976225102200ced1653e9321c3644c074e1ad12c0c149e934fa7b64f44268388eea490561f700770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018f2fc43e390000040300483046022100f103ea9dffe9647548ecf5837401633b7d90804658706b27220a04afd57cfadc022100837ca35598661958295a4744527750b93cb05307f4aec84699cdc925ae99fd5b
 . . . . [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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