tachikawa.or.jp

Issued by R3

About this certificate

This digital certificate with serial number 03:9d:7c:9f:87:d5:12:c9:3e:9e:bd:5c:2d:28:14:c8:b8:ce was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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=tachikawa.or.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:9d:7c:9f:87:d5:12:c9:3e:9e:bd:5c:2d:28:14:c8:b8:ce
Serial Number (int): 314926842003552624437949810522966960158926
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f5:9a:df:8e:f7:0f:06:1a:94:ce:a6:cd:7d:de:0e:8b:16:fd:de:e8
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 83:da:77:33:9c:89:ec:94:f0:53:e2:77:5c:65:8a:40:a6:84:62:e7
Fingerprint (sha256): 99:11:09:02:b1:90:a2:46:b4:eb:80:c2:6b:c4:c1:18:a9:a4:df:f1:f2:89:5d:d1:04:5c:f4:b5:07:13:3b:8d

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv4x3lqwc9Eb/mX6kzdSb
IPimsHf2NdklhR6cYQblPlJNAzCJiTjZ3zQRh69P5/CRTCY9mcczbxiVDC49L5ql
5naBTLElK0b7jTocsd+2kxBGHq4JKUyeKfNvoH++LeByxtRZ4Rd8hcXmpEm0G6PD
GyeQHNw3ff5DYZ2JUx+11s84/1nZ2Rbav/DVvNOEfm8+VFV2bxjmTrChEN8uDnyb
UdKSG2DvO1QWQKS2jJ66t4+O3QMiwZIDeGu3fA2yBQwzxb0f4pH+c8mwRTvnewqO
zK45uUXD/PZX4/HC4Fq/sQ4TYvrByV8v0OJOWVCJ1c490xdPvJs1m4zxcq1vI0dh
JQIDAQAB
-----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 314926842003552624437949810522966960158926
 . . . . . . . . [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 2024-04-17 20:36:14 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-16 20:36:13 +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 24180783178259065315225929185675662577910459865029017373625898660446001017128726574051252565766176873298049536693752690440197828263176696443346698214885199800839702413842984984561705289264723823513745493070827575253006949570538661488922025313345210605213357271157247186118747129556585634295078748189183466365803974786919940557025608645923212643915549981625376097448613164471362199532826017915972621202025802296325568591647510154540187724277540092958512774958481997894236107072348420742443567535061656601720207293173583975991163165905160284190758882121832467779230367527225072979285645791578755111012144883284461445413
 . . . . . . . . . . . . . . . . . . . . [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)
							f59adf8ef70f061a94cea6cd7dde0e8b16fddee8
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018eedfd26330000040300473045022100d7b028cbfdec091a98d9f1af13454dabd3a928d656c0719e0ff7296771921fad022022b46607c4c02d64c21fad0fdcec0a0b21420a433b31cff91c56dc6a645f697a0077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018eedfd272b0000040300483046022100dfd1271f276626ca3cae4ac74890cfed9c14690b209ac53b11e06e36cf49f323022100c643d1d20e7a9d9ce712c1b8deb14fdacf27e149cc0e4e372a3ae4a9c023c758
 . . . . [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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