yamamizu.co.jp

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:4b:99:eb:8d:02:c1:fa:2e:cb:7a:6b:d7:43:29:fb:c2:0e 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): 03:4b:99:eb:8d:02:c1:fa:2e:cb:7a:6b:d7:43:29:fb:c2:0e
Serial Number (int): 287062630247506216011918631559093261419022
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 69:1b:ee:e3:00:97:25:b0:b1:3e:8c:f4:83:72:d1:26:3f:5e:c2:bd
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): e2:9c:a9:0c:be:19:ca:e9:cf:b5:e7:60:bb:b4:69:58:7f:0a:6d:56
Fingerprint (sha256): e4:00:ce:4c:f5:85:65:87:58:46:2c:f9:91:77:72:9b:2e:32:af:83:0f:fd:a9:a9:1d:fc:cf:d9:6e:60:5b:30

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-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0kUttS9CTGcuJ15bE5rk
rp/Dy5kdz1u3/1/eG1tfiYZrPmg+ny4ptVI0L6+DaXocN+fUxc58WrHoP0aOG2WF
AhY/uqTc3pufqPBqTF3UPiyLIvUAwHye4FYKx3xSR5ITV6TufwErouciz+h1njsT
N4WqO7dajpVQNhnkrW4HUA5qjDwoeUpOp7j3rCy3q88UGdONzh4Qqw8ELgAAby2Y
AVYM/yabNfnZf1PmY4bVaJjmulK4I0VJIGviMpnfj1N3KDRMdL7MZQC53Ha1ekcs
veJaaCXmy7fqdt/os93Hdw23kyTnM/Jd0C/3Rr3Y5bcDj6fM+i18RlKe5UPXkZWc
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 287062630247506216011918631559093261419022
 . . . . . . . . [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 2019-12-19 14:49:22 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-18 14:49:22 +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 26544157255276222997432599981708778199787249713087237598821798956102150510438104039850636400418620969138363481458943371095222903203611253257645113966961238343578525240028987543673268771446960183722092242983203964478829159049507388675432684456853090031167119878324986422284713838305303563540229956208906298093563156795462492517015489247662034752399856616655084582668966491644276700186655573185438831858407247438843155467941811727108537019025215268293811283203461166626191570404248551385827975108086655456753791689758638832649119809748630507282274675946554864328307452444974967439674472334562887510723028193155998915709
 . . . . . . . . . . . . . . . . . . . . [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)
							691beee3009725b0b13e8cf48372d1263f5ec2bd
 . . . . . . . . . . . . . . . . [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)
							00f0007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016f1ed969810000040300473045022100966340eaeb36958e93c338813e0185add706136f1b71570f4b0322a5590ccdb002200f268309242dce826a59a03f430c91e9e8e41e559a7072f496dd7f846cf0a0b500760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f1ed969a50000040300473045022031fca5756fa93a34649de745d952bbb8842e344124c1bdccf4b88ee14ee585fd022100b9d76b392a6688bf1cece1534149f9dbd8e65de99435b7092afeafddde0e533e
 . . . . [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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