www.oniwa.co.jp

Issued by R3

About this certificate

This digital certificate with serial number 04:c6:41:42:9c:17:54:9f:fe:b3:37:4c:6b:66:ec:1d:09:55 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.oniwa.co.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:c6:41:42:9c:17:54:9f:fe:b3:37:4c:6b:66:ec:1d:09:55
Serial Number (int): 415911798054609821252912016881475078916437
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 49:20:4c:dc:87:9d:6f:0b:f9:e5:6f:43:2c:69:71:45:3a:54:31:aa
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 79:94:5f:6a:02:a3:e6:f3:a2:23:d9:fc:34:04:41:e5:b1:85:fc:c3
Fingerprint (sha256): 05:2c:1e:13:84:91:10:c1:34:3b:d1:c0:a8:de:98:09:51:43:4e:7d:f8:52:a1:18:e0:98:36:74:dc:91:db:d9

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

Revocation information

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

Check the revocation status for certificate www.oniwa.co.jp

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.oniwa.co.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

oniwa.co.jp
www.oniwa.co.jp

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyNUeC/L14eC6kFpG/IsB
W6bwhQwHc5Syv5Tdty2lqzu5Q4yrcsX1xqhzeBUfyWaOQYKzHFOW5P6DwGFk+GUG
dxrr/lkdqqE/m477/BdBBvVUmAl113XsPfqtJM/01E/L6rVTJnuzKG9eM+a6bmHj
sd1KFBWFWOLWT1CwqwUsWrc+mfu0HT8WlNlov2iYl7Rfd0REfxahWt2i0YecF4aI
+qEiaZSlFk12qJY4FYm9ce9056PrpjSQpwKOVHXQv4b2Cjr0tXgIHhArGzvoG1jG
dL2mLAWXLBapAseksn3MYm8Vb60QMzwGKjbjDvuJzE18aeUSjv/BpSMc4n32ogTG
uwIDAQAB
-----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 415911798054609821252912016881475078916437
 . . . . . . . . [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 2023-12-22 02:06:25 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-21 02:06:24 +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.oniwa.co.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 25352753085109940314853725423194037985962458214457655552319494083695499778792106273838166545115169986528026282396554583919728861585710990862737786220348110556165951443631750738211241688703528893234996486651349448935939690523334234000521908620712521871213036511658540229169226845442088910245447776873271156515569321274729944651924216216189549377640641787388880514903472184884049017144110132194574541674450532763440206943359596208557386348677083397844556281506026892240065950488153391377248551264801039003042222205747103549417752860409786500341094086003395560786871190249085974983260218819521644306867928461251092727483
 . . . . . . . . . . . . . . . . . . . . [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)
							49204cdc879d6f0bf9e56f432c6971453a5431aa
 . . . . . . . . . . . . . . . . [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 (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'oniwa.co.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.oniwa.co.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef00760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c8f7d092900000403004730450220412c9fe1619a5597f60efa86c281c0611dd93747c39bf3813eb2d4f2a222728e0221009d8f04c4c0e6fff29aa2aa8b7784110210d2429d2c20e50c90e35eb196b292310075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c8f7d0928000004030046304402204ad00843dfdc36475fbd6a3b31c991e875b764f57bd61671ab8c0b37730056dc0220420d6bb223f03b06f3fb04748e596d622d508b54d69ff1d427b0f9a9723ae393
 . . . . [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)
		0027564fb9c2d7c63a125f7fc0e184b62958ce2951d02ad5e5bdc92c0277a8c5a52089e702a0435ff1a78530147124b14e78c4131c30f50da4773cb4ee2827d99231ec58f4a6874506b2a0208353fe7040326ad06a238cf4ec3b6985122c093d963ebf18ed5fe3cef49bc613beeb3a3f0059b5edab0d8f4125aa046a1e864127391ef264abbc809c1bf9f90620857b846fb9741f7221c5e574b0445db5472587eedcdf12f8086c0d0f703c7037f581bbc2377736c70a8e1ca9db6041ef01a5d13f4160ad5a613c6d2a3857779884e2ca71fbc1ad59147b710c7bf0a0b64ccf3d8bf7eb6e73f2f37777ef7055915b0b18673287b1f28c7d2caab317bb58043bbbe9