tachikawa.or.jp

Issued by R3

About this certificate

This digital certificate with serial number 04:9b:ce:54:ad:7d:ac:b8:af:8e:94:f8:6c:c6:d3:03:27:32 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): 04:9b:ce:54:ad:7d:ac:b8:af:8e:94:f8:6c:c6:d3:03:27:32
Serial Number (int): 401467171238668094457764055573788107155250
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 4a:b5:ff:18:c8:ed:92:81:71:13:b9:05:10:bd:b2:3d:eb:02:34:41
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ae:cc:fd:f1:8b:c9:b9:00:2e:dc:2c:f8:c8:01:d8:9d:e9:d4:36:c2
Fingerprint (sha256): d0:bc:96:df:62:6d:47:7e:92:04:88:4d:6f:48:97:96:3c:f6:31:50:c8:a1:fc:7d:41:6c:3e:d3:b4:ad:96:e3

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4rRXIlKgYNX3fDdOybfJ
bF8G2KNDUiots/LAbNteWrhTio6E6gxAjU9IxuVwnwKvImpd9dEcRfNTpcV3OHZA
Z2WEsdxKHXG9uRDpV4PNKKdFYvI7B/mrrT/ZDknWvBO/DMO20V6I1wb9TyhpOQYg
8suvbj9M06xuF3oobH/XG/mqTEkYI9sngn0pIfVDrwo0tGyUrUsVunI0ntxniakw
C9tOSWdnLUt+3Q48s74+qKpepWr1z1O7yWD547i482nviKmVQrbFXDKwS2+EnFR6
6Q5inF3IxqiCgver0m7q0ZAgkrCu+r8A+LgD0dLjJTrBfFVPQJgc/ebiZBWpvbBA
hwIDAQAB
-----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 401467171238668094457764055573788107155250
 . . . . . . . . [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 2024-02-17 17:53:37 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-17 17:53:36 +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 28618786071965351475740500705151190127403973184511853547927109093478785980176366960081219778688160571307718761740510912056848419615404592873475279108157770783707403548135240437030272660912901209261092307744092193515011695658106642250247747313285688381731845078447242520849163212904235381524327988334032703805189541351228126700325523689931083086704658233522123876794962611604785717403134889180493624817676704108871764088053577187588193859340017339005169897920906996239957275094687942273265422305812433111273743257597500050287514100739291416174565678424821610549184545062283064715584360465689478385028286114101248147591
 . . . . . . . . . . . . . . . . . . . . [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)
							4ab5ff18c8ed92817113b90510bdb23deb023441
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f000760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018db86ab5cd0000040300473045022100f7ecad7f68724d70dd623f42a6156ee3c53e4dc71d68af69d8bc8363b5a6b5cb02206073af29e2d2afc0a9d5140797af159ce06f2fbf04b80e24ce38818d89d704de007600a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018db86ab5fe000004030047304502201b452883c9bb626a35feb39d5b40bc4dbee65bcef3c28eb72e39e8b15c173e12022100d6dbcc9cd05fcce9a6ebe3f73666dc233e8a03359828121704783dbd81a4871c
 . . . . [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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