www.puppy-tsukuba.jp

Issued by R3

About this certificate

This digital certificate with serial number 04:14:22:80:ff:fc:d6:12:2a:88:8c:21:91:f6:d5:d0:10:96 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:
  • 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=www.puppy-tsukuba.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:14:22:80:ff:fc:d6:12:2a:88:8c:21:91:f6:d5:d0:10:96
Serial Number (int): 355300654623360533091773610577378560446614
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 5d:9a:70:17:2b:0f:c7:e7:42:4c:e2:83:bf:b0:0f:13:a4:3d:a9:45
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ef:cf:75:61:3c:f4:04:4d:78:0e:5c:06:df:a7:7f:b0:ed:69:2f:b6
Fingerprint (sha256): 69:0d:7b:7b:ef:8c:5e:97:d2:34:22:73:e2:bb:5e:3b:b0:38:88:3f:ca:3f:80:67:b4:41:d6:a3:d0:c1:25:45

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

Revocation information

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

Check the revocation status for certificate www.puppy-tsukuba.jp

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.puppy-tsukuba.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

puppy-tsukuba.jp
www.puppy-tsukuba.jp

Other certificates including the domain name puppy-tsukuba.jp

(limited to 100 certificates)
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
www.puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
www.puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
puppy-tsukuba.jp
www.puppy-tsukuba.jp

Certificate

The complete raw certificate details for www.puppy-tsukuba.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4sRZ+3m3hbYGdlg3XPoK
ZVgWBW+S7wa3G5Ra1mK/VylOPrbX1yOoSk+/pxJxfm4YpmzpvLtlDLpHUkMFMDsa
ETi9+7fMfwJSxkBesuqY+cq1p5tIonbE/ag7Fiw78asAFSdtKm125FPjBUZZrlT3
v085ny49FA3ktnvE/wtLJbs/uy4DCN5XsDddbLlE3bGnLplTGiqrK78iOA9dliX8
QWxAtGedeykStMegY1nhXHRy6N9nNRytTrXKSfLOLmcL1so41xbx/7A0LiScaga7
B+EANgdPgECyIgMUTcoGcMStvM4eFymmH8AjWaY72T6vznH/15oUBTg/EBvO5Q+M
lQIDAQAB
-----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 355300654623360533091773610577378560446614
 . . . . . . . . [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 2024-01-29 06:05:57 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-28 06:05:56 +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 'www.puppy-tsukuba.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 28626681452454498660990497317710929615626506401477836288513880817156371146270321617570157510021542622893761031683161606395559575483009717883250036738125518037931046726947957529773053127398273907607395816131758749008253733483920987232830288633403371728312145385137404196205843985857269664919336152801561159155304189926822866087702282638150116402259334490569063325189593709649465449630300412357642084872693482634507302023221442826824208084562750824424025981622309191609573305788721821562077451550192318102867052004089639375047706187150769480812969326424000084753569552868655865854634592437008002953077488004810060827797
 . . . . . . . . . . . . . . . . . . . . [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)
							5d9a70172b0fc7e7424ce283bfb00f13a43da945
 . . . . . . . . . . . . . . . . [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 (42 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'puppy-tsukuba.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.puppy-tsukuba.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)
							00f00076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d5409fe84000004030047304502200cab11f1a74f1a3d875c3565b634ed1da11359655333a7236895863f6daef14b022100944612ace4bd31304f6e4d78ed02b8a4ebe9f3d5b680f12994d380c48cc43bd6007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018d540a007f00000403004730450220564b8abbd2e54be6407f8c0b809dc6172fd84e6ae506ced156aaeffe63f6eb2a022100ab2ff7210deba6ca2fddd9219a40eb33865d3adcc6a0a04973e8e147a5f68a5a
 . . . . [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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