DV SSL/TLS Certificate for alc-education.co.jp

Certificate is witin its validity period

Issued by Amazon (Amazon RSA 2048 M02)

About the alc-education.co.jp DV SSL/TLS Certificate

This certificate with serial number 05:aa:de:02:6f:c0:7c:12:16:d3:b8:09:bf:29:2d:cc for alc-education.co.jp was issued on by Amazon.

With 2 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for alc-education.co.jp provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Amazon

Organization: Amazon
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 05:aa:de:02:6f:c0:7c:12:16:d3:b8:09:bf:29:2d:cc
Serial Number (int): 7533333332849371515397452387936972236
Serial Number Length: 123 bits, 16 octets

Subject Key Identifier: c1:29:f7:e2:41:04:20:b8:03:11:ef:1a:1f:fa:15:d8:37:1a:e6:6a
Authority Key Identifier: c0:31:52:cd:5a:50:c3:82:7c:74:71:ce:cb:e9:9c:f9:7a:eb:82:e2

Fingerprint (SHA-1): e6:78:83:e3:b1:ce:b1:66:aa:9e:07:03:bd:06:37:53:e3:1f:c0:62
Fingerprint (SHA-256): 4a:41:83:6d:24:06:b2:55:59:89:6e:55:1a:4f:8d:07:77:4b:7c:02:d5:47:9b:50:b2:8c:07:4f:dd:d1:8e:c2

Issuing Certificate URL: http://crt.r2m02.amazontrust.com/r2m02.cer

Revocation Information

OCSP Server: http://ocsp.r2m02.amazontrust.com
CRL Distribution Point: http://crl.r2m02.amazontrust.com/r2m02.crl

Check the revocation status for certificate alc-education.co.jp
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for alc-education.co.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
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for alc-education.co.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArfOMgg3/NSEfruxe/e/A
uy3AZ5/L9SJu1ltUaJTxlXlgruOMg36PDmxeLRz9yxZm7BSNS42+6qGHuFgH/0zH
nhpq9oDSwIamgwsw/PJsv7uS81c0pCv85fPtENSKLfiCphIYwGhwIy8G3aS6yun8
vBG04Tgvq0qTggXXrqBch7pUB2L9Uv45l1czMYwiJiYO565em4CzH43rRE1E+lbi
6T3cT2nAOfg8DQG9rjivJZNC3Koh0eBL8cP51FZQ1hzhG0djLqqXQO7794czZxVa
MvCgRCCme9XFgSOoi6u7MJlwH8fbAU3oMreDsgbKyXAYQBDa9mMhptz6xyOls35N
QwIDAQAB
-----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 7533333332849371515397452387936972236
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Amazon'
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Amazon RSA 2048 M02'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-08-17 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-16 23:59:59 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'alc-education.co.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
 . . . . . . . . . . . . . . . . [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 21959325177865545706612006336079622697732561461827093834343309059764364807406919453127788023756775210927865987685552149702401838717263621258397854439438832059054956539839900060150486807574460249487223175870794077680577946446603748719390679921636085706383320253209639050275788761148626365355811161680590340064380309942557257517511019220862231555634874187309260137531085312353585501000342447256477786923951260522836971093075807669938872038947358029237619141016098874347535391725314407802396376100870871430217431854899663536831335320388616823596719456859202663343587227595991925573785614951742778987100281920431450901827
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName c03152cd5a50c3827c7471cecbe99cf97aeb82e2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							c129f7e2410420b80311ef1a1ffa15d8371ae66a
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (46 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'alc-education.co.jp'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.alc-education.co.jp'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (52 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crl.r2m02.amazontrust.com/r2m02.crl'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (105 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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.r2m02.amazontrust.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crt.r2m02.amazontrust.com/r2m02.cer'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (367 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (363 bytes)
							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
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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