www.a-dec.jp

Issued by R3

About this certificate

This digital certificate with serial number 03:36:8c:91:72:e9:9c:84:7b:db:b1:db:28:e5:a1:89:72:6c 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=www.a-dec.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:36:8c:91:72:e9:9c:84:7b:db:b1:db:28:e5:a1:89:72:6c
Serial Number (int): 279898952742169089245864665397615057793644
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: a7:b1:ea:cc:ac:9a:ba:1d:43:a6:c2:a5:13:bc:89:d9:8d:a6:03:32
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 13:01:d0:ca:a3:18:1b:7e:7b:19:b5:94:96:4d:e2:8f:a1:59:6e:ba
Fingerprint (sha256): 13:9e:8b:0a:61:1e:bf:c5:d2:f5:17:45:0d:71:25:1a:4c:c2:8d:ed:68:dc:55:60:5f:39:3f:24:d2:17:5a:cc

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

Revocation information

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

Check the revocation status for certificate www.a-dec.jp

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.a-dec.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

a-dec.jp
www.a-dec.jp

Other certificates including the domain name a-dec.jp

(limited to 100 certificates)
www.a-dec.jp
www.a-dec.jp
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www.a-dec.jp
www.a-dec.jp
wis-stg.a-dec.jp
www.a-dec.jp
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www.a-dec.jp
www.a-dec.jp
wis.a-dec.jp
www.a-dec.jp

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvizbohPgMU35GZB8imL6
cgB7vBEColkXkgOAjxyec/lC4goCP45+IhT+nckJQfiqFyVionLIuuT8KsTpthhR
49bJBHllFm9HjEFU5d6PTZDs18hldz3rX/pNOXsVU0cktJdKJvidcHCzHPPDAwU4
9NxkCxALKEAUX37F71wmH7RjCw+gFyLT9bZxqfl3dDeHkoqAa1CbLl5IMSUmR5xX
U1KOxtttOxC+yalBlAxnrExGGPgr6Q/fFOkNb8FxuZwu+D+Ao3rQmfyrRdjfrIgc
vJyLHPlk6ZurkQJN6gjX1tHY+INTfUzLWPc4tK9SayyiVFHSL6tcJTSKYtisSk6p
OQIDAQAB
-----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 279898952742169089245864665397615057793644
 . . . . . . . . [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 2024-02-29 23:25:32 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-29 23:25:31 +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.a-dec.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 24007398219115532679001278710900668894091874393544995604576775520259017592619918748868429725264452517839616297412122596061423765366970736392950751892006852325193657929879485251863141666452084576098915638958405659770258549708067228152281802533519784775396501142515203063356558038667654766650283593564034940087029025190737312658206637567135615758048427862976457044423722835374701585274083586769361136828937422895966152566841747026962836389106183526425250981306852795499953451556907127681803118564362866299730871549824669820814390998996924413893387288033708086785499404639874596599777271756906178698578375206527688419641
 . . . . . . . . . . . . . . . . . . . . [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)
							a7b1eaccac9aba1d43a6c2a513bc89d98da60332
 . . . . . . . . . . . . . . . . [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 (26 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'a-dec.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.a-dec.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)
							00ef0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018df766e734000004030047304502204205cd76c1dbfe7a6e7e693770eb6ac6825a7d5fc8a5e5a37af39c09c65b359b022100fec06062b1e4587f96943ce8142c270dd8fb3f78341965beceea5db28126c8fe00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018df766e7580000040300463044022023b12402382f1f4f6ed0e49abbb434c870feac2c3b17e353d9c071533688469a0220661cf0e05b0de3c7c2833519272a47817ae1e671ac5ac7f8874b7ea4c68fc493
 . . . . [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)
		008420df1679a5f6d0e7bc8169b912cd5fbffe80893e3d5c9e41c55283d355e3385519a74bbe626f6c1ab3404aa83c9dedfd73bbe3e686c5c9581cb39e9e12dfb3b8c67f7ee66e98f9f572c2d1bea6e2108eb8e89508944d45ffefddf444278dbf0665fd350436abcaab48ef29d285dc9da0fbdba64fcae814d79943ff1f3e02747dc07c8b30130b9abee01f1981c9ef61030e96a14917aa661dd1ce0525a9432bb5c14321daff3a0fd31aadf14fea30f199a0a1f1c3fe2873c60c6bd8554e20faee80f78030ad4e961bcf68f7a1b2c298609bb673d5a9a4f10029be4e233077ea4648a663ab45e2c5a7f569e95d7621219bad5be1122399470e849418103df039