seto-solan.ed.jp

Issued by R3

About this certificate

This digital certificate with serial number 04:b4:80:83:ef:43:81:08:e1:fa:3b:67:54:77:cf:29:1d:85 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=seto-solan.ed.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:b4:80:83:ef:43:81:08:e1:fa:3b:67:54:77:cf:29:1d:85
Serial Number (int): 409870796000002963770080929666585288318341
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: a0:13:15:a5:18:fd:f4:22:9b:9b:1f:14:68:00:a7:14:c5:d0:8e:1b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): a6:ca:e0:59:5f:65:36:76:b5:05:dc:47:a6:ae:46:cb:16:72:30:71
Fingerprint (sha256): 7c:05:c8:63:77:8a:e5:31:82:46:8b:90:20:b7:4e:b2:a4:31:90:09:ca:54:9a:9e:8e:0c:8b:52:cd:30:3b:40

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuo+8C3mWFtZ4MVqF553R
fNxro/0Yn0V1JV2EiL3nTHxmjOeO5eclu22bzNcYSO495f7RrRiG3KTywL5hwqjt
0GSZfsSV/xSRauk8CCJhZneMonzPIlYooq3AufyY0Br62plU+NjD0nBfQFFFVLle
CIugvqydySFd3G0hvgncemnqn6Ucwo011ea7umfmttJkvaxQQkL3AKqqbHLFRCc1
p3s6KYqjDwQTTEa8j9GzgS3Qhg1jEE5dfs38Qo5Zn/IKyx5UwnMzJOQxFOrfsNYB
frOXY55ixEXpHH36mHED5IYDAJxMol18fqOU25aTMv24USUK4CDnmqFUVuGtU8Xz
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 409870796000002963770080929666585288318341
 . . . . . . . . [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 2023-12-31 15:11:52 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-30 15:11:51 +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 23551202872002914376422003740478334489062835244270551796239123548933121564007444389618139018325535730599167806790749345036842096068570761052742184183340778305477040823781875088715133336057380895970962324793310199440346446504064734067503894010451929514613233789706704599359039311939082403675827759252414419369339391104268012538722102166246294807669569664356871665228231545383467425859455111734430215309085339589882191020707672115050499644432386779767988620927855352670694111782217990181150616863256275715375083969553078724405934351499134428413029940730498077906106415558938440373726785995650308085153557802108060037921
 . . . . . . . . . . . . . . . . . . . . [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)
							a01315a518fdf4229b9b1f146800a714c5d08e1b
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018cc0a56242000004030046304402200b08c4f4e9a5af4073ec491a2c583cf42f9700ad020506671f046ba363aac82602207e58fc93a458b496b15c7ead602cbd6eb4dbc9678e48ac5ed2c171e2a06a9fb5007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018cc0a562b800000403004630440220334e19ce1e6a95ed376a4f792d96b34fa3b42bce7ad4021a0704d93cf5d96f400220067673d30ab0a0b49b6b249f3433b8c70343eeb3e21fc0ba05e0f3754b129790
 . . . . [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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