tachikawa.or.jp

Issued by R3

About this certificate

This digital certificate with serial number 04:14:2f:23:c9:ba:35:6e:ec:3d:26:ae:93:e2:ad:04:54:23 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=tachikawa.or.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:14:2f:23:c9:ba:35:6e:ec:3d:26:ae:93:e2:ad:04:54:23
Serial Number (int): 355317450603169000985362707235172742616099
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: c8:0b:f8:f3:a4:82:a9:43:9e:56:23:37:db:ff:78:d3:22:72:16:14
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 8c:6e:e3:a4:d9:f4:f5:64:73:cd:79:d9:c0:fa:e7:36:59:fd:ce:f1
Fingerprint (sha256): 06:d4:aa:0c:9b:bd:c7:d6:79:b0:11:bf:e2:f3:1e:f7:bb:77:f3:24:4f:f0:96:ec:21:88:27:fe:6f:52:80:76

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

Revocation information

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

Check the revocation status for certificate tachikawa.or.jp

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for tachikawa.or.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

tachikawa.or.jp
www.tachikawa.or.jp

Other certificates including the domain name tachikawa.or.jp

(limited to 100 certificates)
tachikawa.or.jp
www.tachikawa.or.jp
tachikawa.or.jp
tachikawa.or.jp
tachikawa.or.jp
tachikawa.or.jp

Certificate

The complete raw certificate details for tachikawa.or.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAw8rM85dU4IpPGyrqNY7L
Uhqz5j7HOZuj6kV+MWy678iruqmZezJcz61n9SW6x8JFHvnlz+htWdr/Md0SlPxs
bSMmfbbZxKVUn9flKqEmsX/g/7382jun1AXlj1h4ZG2bmI9eEtfGFVQV5FModFWb
S/AHoccEX8DZDo0tPYRJy2aDpWDoeU4uYQNyjODYC7UbKD4oOK4Y6HspkEjBN1j5
YZERDV/wCxy9xULRLN7bRqMdCO1gb467ZZG7Ku+h/CWB+PIbIS4Vi3iTf78zm3si
+eFPcTN+K0oaR+vwuVgyZo1/DHOZ/WKU6Gf/od0uehr/A42+zP0653QW2E32FNzI
0wIDAQAB
-----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 355317450603169000985362707235172742616099
 . . . . . . . . [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 2023-08-21 02:59:08 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-11-19 02:59:07 +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 'tachikawa.or.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 24716474167476362122188025217506582585995143307371574919722362121535199951274465136638777581240816064020947625837487145595290272124857691333692130776223493552911450300802692783443778623362492032548667171214242619932003886771138559001128009672723943423963226479214217194411024516859153249958043298597620929442254020684017342869510892689131055420335555448148978917030323847390729755362348706604875180498939398115043690475927250098147937811459089632307119936312639198988712978222450382195172209216231098537084332150706928276994425286707370107527910162951791596525255275193895422067722778803205097211081850201133255805139
 . . . . . . . . . . . . . . . . . . . . [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)
							c80bf8f3a482a9439e562337dbff78d322721614
 . . . . . . . . . . . . . . . . [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 (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'tachikawa.or.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.tachikawa.or.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)
							00ef0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018a163f1b42000004030046304402206f100098082c169cebafa708089db5e86cb11d6d9405c99b3ab147793fc774a502204858c4a8006aa8f51cb0560dddea960100b27dfa049093c8e913114c451973e1007600e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e0000018a163f1b31000004030047304502201775ce8a4f4940a78e7aa4c44d519e1c807061724b0f4f85c3e7a94c1cf63b3f022100b21e1d79c179813198b1be31928e0b694954c2e82b3c28a9e16dd6d4a67b98cc
 . . . . [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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