www.puppy-tsukuba.jp

Issued by R3

About this certificate

This digital certificate with serial number 04:0f:a8:bb:24:13:d8:f2:66:06:eb:12:c2:91:35:0a:1d:f6 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): 04:0f:a8:bb:24:13:d8:f2:66:06:eb:12:c2:91:35:0a:1d:f6
Serial Number (int): 353777661225398698041070507394254525570550
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 08:2e:c8:81:cb:de:09:b9:91:ad:45:0e:be:18:73:e8:d9:db:76:36
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 61:e4:7e:f3:79:4b:b7:8a:0d:bb:3e:84:a1:a9:62:6e:e3:54:2f:22
Fingerprint (sha256): ff:2f:5c:5d:4d:37:50:e6:64:b8:f6:ba:96:23:6b:70:7c:b5:1f:27:4e:a1:2c:bd:ac:7b:1b:6e:1d:8f:fe:20

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1eLiKQN2Lu8EzWR2ITTV
0iOKMYyZkoMCw8zsLPjNMyDUeWvhqIGJDJT046t6vov6EGMJuGU5lAzIAsmAFs51
GkzNmxZLsMBi1hlXHQdjk74nEUoqhX38fzrYgeY1dUKlz+Nj1fLTNl+gO169TplX
jw8aLj/nlo8laHIjtDifq5bziLupr18E/DSJ1/SKiboN2GaOlJgS0wf5OZcT9Hop
NkNxloEItV5bvtbTK4dfnGSvQOYKygS/GzSf7khpt4YWb3kClTZNBWqxniPGaFs1
lW4i1q8/tvRSBZK69GPEJDfSxypvOGBHG9N6VzZb6zSwlxCAMDxa9nnJcWZ08PR8
uwIDAQAB
-----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 353777661225398698041070507394254525570550
 . . . . . . . . [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 2023-10-01 09:07:56 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-30 09:07:55 +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 27000639351043804033432558078485998163452332216729052164809769251251869115194764652723671852663804059248945552862372746034418113771335308896331507564702175595146305361613300030635368598614456980319749575634778065182296656641574204035526405278023367242563476544516904038087749560605346306097693815211069985063710858806961234959526637090737761660738259336600107560103561078622827531487308737880693537436474697054842814114413194951188087793530144352926437002223236556184413504589120520799719790111496208644812704849394773744166345107621972643089614286638196976356726487588143071814692462530207193231617921435000049532091
 . . . . . . . . . . . . . . . . . . . . [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)
							082ec881cbde09b991ad450ebe1873e8d9db7636
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018aeab57b9d0000040300483046022100fc971f61e5c257b42411da60c052b1dbd1fbb0abca551310802d3fa8f586050f022100f9c763048dbd5c6ce9f0825a11944384b96b23a6e738e2c3e23864cda11949cf007600e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e0000018aeab57ba5000004030047304502202eeeef6ef2e7085172bf5d1bf953513100100091911f0905c8e2a4ab342830ea022100bc8525e5a6f6ded40e9edfc555719512fb61058606b6e54596f07715096989b0
 . . . . [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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