yamamizu.co.jp

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:2c:1c:59:6d:14:d2:86:4f:b6:47:ca:48:32:ad:bd:8e:d4 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): 03:2c:1c:59:6d:14:d2:86:4f:b6:47:ca:48:32:ad:bd:8e:d4
Serial Number (int): 276346964650536783849229533427941420928724
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 88:15:31:a0:52:b0:ca:ea:6e:2f:62:2b:be:80:76:20:8d:fe:02:07
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 44:3f:69:a9:fa:2b:59:53:41:89:b6:26:cb:1a:a4:ee:08:6d:4e:ca
Fingerprint (sha256): 0f:f2:53:de:f7:a2:7f:65:54:06:b7:06:f3:2c:c1:5e:37:0f:e0:12:66:90:79:55:8c:30:a4:3b:e6:ee:17:3e

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.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-----
MIIFaDCCBFCgAwIBAgISAywcWW0U0oZPtkfKSDKtvY7UMA0GCSqGSIb3DQEBCwUA
MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD
ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMjAxMzQ4NThaFw0y
MDAxMTgxMzQ4NThaMBkxFzAVBgNVBAMTDnlhbWFtaXp1LmNvLmpwMIIBIjANBgkq
hkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4RrR7beSR85lh7ZU8UEcNpDDVMLWWPu/
DV7rElVzcwHuf1Gtje/uPQwKqEfrqu4YBJWTZy+O2yw6/JWHMSsHG+8295rafZDr
NjkVoxzPFyiikCLJFWxYx9rLC/L7tYnoUGADYn/Wj0wYZ54JYbTDt2i70jcWR5qv
m5Cxpml0nCnFY099ygbvAvcGoDXzAXJeYo6oqCejWyWM6BG6WldLXsIv02qr8TML
mRBhhtfRvhD4dRoF2Gtecsd0tQFeYPjEsnQG8Aha9+BsANGFGLrmWsNOHyvK6JQj
gyKG5tDfGVOxovsuG7QVAKjRDLYchupB4n7Xy11QHFCpQmA4qPO7kQIDAQABo4IC
dzCCAnMwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEF
BQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBSIFTGgUrDK6m4vYiu+gHYgjf4C
BzAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggrBgEFBQcBAQRj
MGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRzZW5jcnlwdC5v
cmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRzZW5jcnlwdC5v
cmcvMC0GA1UdEQQmMCSCEnd3dy55YW1hbWl6dS5jby5qcIIOeWFtYW1penUuY28u
anAwTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEF
BQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQC
BIH1BIHyAPAAdgBep3P531bA57U2SH3QSeAyepGaDIShEhKEGHWWgXFFWAAAAW3p
pIxhAAAEAwBHMEUCIBGPzVyV2Tf25hO8a2WoJYxOdyeuyPG4VyoXULCRRH8VAiEA
5m+8hkidQ3UmldHv5g0aCeqo6TU82GxUZIfjTarCF34AdgCyHgXMi6LNiiBOh2b5
K7mKJSBna9r6cOeySVMt74uQXgAAAW3ppIyFAAAEAwBHMEUCIHWBXBz1RXrxhe9v
FPwhiZ0gBboM5AbuqIEArSbdNahMAiEAqNcVl+cphpmPoWMJvVA6lBAoNY28v7l4
ksCQGRHzdDIwDQYJKoZIhvcNAQELBQADggEBAEwmPpxbCU5TnSRIkZCtynzErO+L
mHWFX/sfnONFGaOrEYhLSGY+Mh3urCC2XKDk1GEy3wkx+tkYOfa/Uo3JfgXg1Bjn
OakuXsZyMzs6WNEc8ChLmsnxv6cj1Fo/IYsvYuttpfp8xUoAMsEsTMeJIA6HJN0S
COMIJY8Xb73h54mya5D19fQ9yp9cX/u/hqaV3nDYgYjPRCAIcbyUJw1h0DESi4i3
h+MNLMIMaRI1c7ESRSq0LFlXYgZkFRgBp7+xhFV6WixjvO2y0Zlv+9gO3kYk6d6J
5PLvqI1N/rrL0Vm7rj9mqZxEb698Tgf/7Nhf3xFCiCNV4dx0ZmP2bcb/89o=
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4RrR7beSR85lh7ZU8UEc
NpDDVMLWWPu/DV7rElVzcwHuf1Gtje/uPQwKqEfrqu4YBJWTZy+O2yw6/JWHMSsH
G+8295rafZDrNjkVoxzPFyiikCLJFWxYx9rLC/L7tYnoUGADYn/Wj0wYZ54JYbTD
t2i70jcWR5qvm5Cxpml0nCnFY099ygbvAvcGoDXzAXJeYo6oqCejWyWM6BG6WldL
XsIv02qr8TMLmRBhhtfRvhD4dRoF2Gtecsd0tQFeYPjEsnQG8Aha9+BsANGFGLrm
WsNOHyvK6JQjgyKG5tDfGVOxovsuG7QVAKjRDLYchupB4n7Xy11QHFCpQmA4qPO7
kQIDAQAB
-----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 276346964650536783849229533427941420928724
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-20 13:48:58 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-18 13:48:58 +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 28416844068813553539722595148442947713729382924787513301626032261480678396719717665017362380536632947419074899420094537309592762471521809585563671130120584626412513236710409656167039065503913039557220012436698667211785825954342871811325912936034389337233949966100180653096587254850986183121385868932483338517248133447838888581003563436389634538425757002790644391830061362866501267391495937463855962701990362259210020154237023624142079909917095917857835270212920234326609569066971371723493344337664690561635815441270253613371266357922334502510352534004370659077894553456688980369693778835549850037375127347173747047313
 . . . . . . . . . . . . . . . . . . . . [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)
							881531a052b0caea6e2f622bbe8076208dfe0207
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016de9a48c6100000403004730450220118fcd5c95d937f6e613bc6b65a8258c4e7727aec8f1b8572a1750b091447f15022100e66fbc86489d43752695d1efe60d1a09eaa8e9353cd86c546487e34daac2177e007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016de9a48c850000040300473045022075815c1cf5457af185ef6f14fc21899d2005ba0ce406eea88100ad26dd35a84c022100a8d71597e72986998fa16309bd503a941028358dbcbfb97892c0901911f37432
 . . . . [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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