www.hkakizawa.jp

Issued by R3

About this certificate

This digital certificate with serial number 04:10:3b:fc:b8:60:94:75:a9:d2:8e:ae:39:a4:2e:ef:8a:90 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.hkakizawa.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:10:3b:fc:b8:60:94:75:a9:d2:8e:ae:39:a4:2e:ef:8a:90
Serial Number (int): 353973398247950879515988527506555313031824
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 8b:d2:4d:30:53:a8:ae:5a:44:d9:cc:03:5d:36:bf:ce:eb:9f:04:5e
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): c0:d8:aa:68:31:f5:6e:ea:01:32:75:a5:60:90:c9:eb:9f:f3:1c:b5
Fingerprint (sha256): 46:58:f9:da:15:1b:1b:ee:3c:db:d9:af:d5:d3:df:4f:77:d7:3e:b1:48:43:59:28:f2:c2:e5:23:ec:39:d3:7d

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

Revocation information

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

Check the revocation status for certificate www.hkakizawa.jp

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.hkakizawa.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

hkakizawa.jp
www.hkakizawa.jp

Other certificates including the domain name hkakizawa.jp

(limited to 100 certificates)
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
hkakizawa.jp
hkakizawa.jp
www.hkakizawa.jp
hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
hkakizawa.jp
hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp
www.hkakizawa.jp

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwSEv9F4QeRDWgRoL+zVK
QkdkSJxWAe3N7jlwXxgP8XXdkp3IQZ9xycD0bMuhAbCNwYGCZn2w6AwdJ7q18b3S
Zkgho6jJ0UYxDvPoiItfb0c9IQEL5XrYWarVvgfhWEtDHZ+L1FJhqgfOgr7yZEyA
iaTdYtNavOeWang3vtI2V0g3dWMIMm1Re2U4OvL960Nh4ZlYfgJrRsWlJQlZ98e8
b2kQusp86FVECdFIVH26b4t+I2eYQ25Xsw4GG+YES0WSS+f4l6JKp91eVMlMMpfm
BgUZtBCwQtiKXKhp6F+8f0B1bTKFkzfeHmdTQpq7DNlN3Dz460aN+cQO+hsXcF9H
fQIDAQAB
-----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 353973398247950879515988527506555313031824
 . . . . . . . . [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 2024-01-27 07:33:36 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-26 07:33:35 +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.hkakizawa.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 24380358137116946270790361899401124300426823080183254594261301749396362799032309723886339205019798038099116492741486392764481921727379294676741083451427619576326935700941453158706478906970501025182342504501345837037586148507305743241440405316618146052752355517300958879484965418593804395248210028742279250917771236613688910289637981591254701217088271306765240722469888844152332644070036443483783817735866713709110793703855094589235527227083245649505647656803431607182476878561615794389473754945079828337030519430637795412263724562003555119590622281840875029970388782096518949553135278738107064209389167581624996415357
 . . . . . . . . . . . . . . . . . . . . [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)
							8bd24d3053a8ae5a44d9cc035d36bfceeb9f045e
 . . . . . . . . . . . . . . . . [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 (34 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'hkakizawa.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.hkakizawa.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)
							00ef00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018d4a0d843d0000040300463044022039b8982afc27f3268b2f05e23d3cb1f5ca4c6ddfeb0d13e080f35bd92092118102204ba0d4b7c6cce72a6a5376b8680b0fbfffdb4c1fabd1884d31f9090757769b2e00760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018d4a0d848e0000040300473045022100fd10cfa983c1ed9566afc09e4a1c00081271643b7b4698b8a982e8c04c36c606022006d6b6db4e55c8b136a2bcacedb8037123e3bf2ad6578b39e6801857916aed06
 . . . . [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)
		00ac5c22b73ab2d284d065acd6cc74b6e88b34e427071a5a1d5cb6d3504e74820b9df8bf168c9b28f99175827b129182c2ad889e6cb52e8d68d4dd8ddbbbe2e88f056cdfcd2cf65f14780a80154b40df0888eb043aa00ba25b5a03b1a90b57fbf120d4e680b1473d5fa27ef88e78bd1507b144ce3dd653b9a516e32608c629f22b3233ea8cafd2c03d25eb5e50fc158590184d40adb52f3b62d9ffa0bd2b85a4a34811679efd31f1b6050166da1255a956147cef7557c4b7d679fce959929b45f5d18a79ceb4e38cd591d829954cb5dd507c191d53a029660da6c24a903fd028a3ab285b9537d29eec87e6cdaddb9963d29212f1ee2b1b9ac72f0548c30cf2079d