yamamizu.co.jp

Issued by R3

About this certificate

This digital certificate with serial number 03:b4:bb:d6:c2:fd:08:9a:e2:98:3c:90:c9:08:0f:e7:84:cd 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=yamamizu.co.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:b4:bb:d6:c2:fd:08:9a:e2:98:3c:90:c9:08:0f:e7:84:cd
Serial Number (int): 322837364582624020433875470798998269822157
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 6b:93:a1:31:a4:15:21:91:84:96:02:d6:8f:94:56:99:b2:e6:d9:d5
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 28:82:29:4f:d6:83:49:81:2a:f3:fe:bb:94:22:b8:1a:11:1a:f6:0b
Fingerprint (sha256): a8:a0:d8:8a:3a:bc:55:94:b9:43:b0:a2:c8:1c:31:89:be:5d:1b:b5:fb:a4:92:c0:51:4e:64:46:bc:97:4f:fe

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

Revocation information

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

Check the revocation status for certificate yamamizu.co.jp

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for yamamizu.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

www.yamamizu.co.jp
yamamizu.co.jp

Other certificates including the domain name yamamizu.co.jp

(limited to 100 certificates)
citrix.yamamizu.co.jp
webmail.yamamizu.co.jp
yamamizu.co.jp
mobile.yamamizu.co.jp
yamamizu.co.jp
mobile.yamamizu.co.jp
citrix.yamamizu.co.jp
group.yamamizu.co.jp
citrix.yamamizu.co.jp
mobile.yamamizu.co.jp
webmail.yamamizu.co.jp
yamamizu.co.jp
group.yamamizu.co.jp
group.yamamizu.co.jp
group.yamamizu.co.jp
webmail.yamamizu.co.jp
yamamizu.co.jp
yamamizu.co.jp
yamamizu.co.jp
group.yamamizu.co.jp
yamamizu.co.jp
webmail.yamamizu.co.jp
webmail.yamamizu.co.jp
yamamizu.co.jp
yamamizu.co.jp
webmail.yamamizu.co.jp
citrix.yamamizu.co.jp
mobile.yamamizu.co.jp
yamamizu.co.jp
group.yamamizu.co.jp
webmail.yamamizu.co.jp
yamamizu.co.jp
yamamizu.co.jp

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2qImwU6NHvyQuAXP/yA8
5G3SDSlov5fqhaRgDpusEccN4H9m6FIBL9COy9kZvnxBWybB0UWUsCOy9JSGQEMq
pkVW0RlRs0Z4GJ51IOmWtnHvJu60q3PJK2zxkXzzQV/gU7pCpv5u+pLXCPiZgV5M
Q22IpHDBeUisX38orWnKaa9It1wQqbwNfaFTWU96QkLxLLpJsjc8m3Cw6JnhsTeU
tLAtlBwEQDY+Eti/4VVVwIZVDg1heXx3ws3K/MdsFq/zu2MLk45MZUksevf5r2Qm
hyjOz9G7xOIwjfVorCmtJTGG1c3tvfD6fr8LtYwq58Maph7lOECjTVifz0N7AhB1
PQIDAQAB
-----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 322837364582624020433875470798998269822157
 . . . . . . . . [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 2023-06-04 16:41:39 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-09-02 16:41:38 +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 'yamamizu.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 27599910311737392392819614339998326902296735822846977036743168556961569466705488769119777559459017071052726504057657814536451876825555626286486907206912155925292635850791378450862617949271881270714696061534941413305354412164355741801750257706437221297100234242653409565228151406804580904334288376716707039856784643110722779368641991796029585124209660922538317222058633844120186238874394982315470774305713171124036331531119740574165282098124160574515903262207754154804514647717771345363104250232877624889798413110700108276747611610615927229059271524405904636842371450247572612402693856557492904370688944050655349208381
 . . . . . . . . . . . . . . . . . . . . [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)
							6b93a131a4152191849602d68f945699b2e6d9d5
 . . . . . . . . . . . . . . . . [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 (38 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.yamamizu.co.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'yamamizu.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 (69 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [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)
							00ef0076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000188878019e90000040300473045022100b7d5548568dc08f3d9314569d71a66a3c87f55c425c22a66e20eebdcc2e36f9f02200516fe0a29f108d08cc04a914b4ae60aa730026ce9f4d788e8a036314a518954007500b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018887801bcc0000040300463044022010a3d7ffec55424fa3c3176d4421bc79d13e749010be8e7fe066efac470368f8022034b3a08ac3ee810991031d1b305d777b5a9ac6ed0b323ae3eb71d3a0680a4664
 . . . . [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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