DV SSL/TLS Certificate for mmn.itimes.co.jp

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the mmn.itimes.co.jp DV SSL/TLS Certificate

This certificate with serial number 06:b9:8a:c3:a6:a4:c9:b3:1a:a4:6f:c0:1e:7c:93:cd:cc:d7 for mmn.itimes.co.jp was issued on by Let's Encrypt.

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 mmn.itimes.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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 06:b9:8a:c3:a6:a4:c9:b3:1a:a4:6f:c0:1e:7c:93:cd:cc:d7
Serial Number (int): 585810402812176664171343278381550137101527
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: bd:c3:4c:c1:bf:82:69:ca:ad:e1:b1:00:ba:dd:aa:18:f0:70:a4:00
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): b1:7a:5b:9c:fd:8e:52:71:28:85:60:0c:a4:86:6b:d0:ba:76:36:e2
Fingerprint (SHA-256): 97:c3:fc:45:f1:da:a4:35:78:cf:4b:a0:6f:85:20:4b:73:81:a7:34:91:1a:d4:eb:5e:ce:06:ee:a7:c9:2b:ff

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/88.crl

Check the revocation status for certificate mmn.itimes.co.jp
1
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for mmn.itimes.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

mmn.itimes.co.jp

X.509 Certificate

The complete raw X.509 certificate details for mmn.itimes.co.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoIkBr/K0QbDicfrFL6JP
VNOLCX7XCt9T8I3qgsyLnKemaaYe0l9qFfUkO6Lkfamqsna3ZDJR2UrOgrb6kkw9
AfAdVQ2x7yEk21qxdxyeFe3dgQSeAf+NV9Ke0obPra4KvztVTtQ6rHwRTdQWNMn3
y/z6AMXU46AFIDVv/Vh0PyMnMPUdNSe0k5QbHFYXRYlfGXuZF98MiyO+o/VJsXd+
f8OKa3qHZCL9bNImam/BEfP0pK4qiSXA7gittdXeEimNtOIvir5QS9GOH2mNNCZy
sjHdd68GUSUt2ljHZK6GOQHSfYmaqeNYmrIbGq7f9bEOnjhJ5koYu33bxW4ngQWl
gQIDAQAB
-----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 585810402812176664171343278381550137101527
 . . . . . . . . [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 '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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-05-31 08:30:20 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-29 08:30:19 +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 'mmn.itimes.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 20265689262606765850811365212692823904188482197659136557678403429455668986696091627663009929288079248252828265258753791789909087155954808898785314831593010192751507113427322472526397281529929243193358113194552499250627649481584666993165995873426644165890244580770686290025950305579504077106031338638250424077364058590369794800629206124561186046959062237348547069589215052848258458701457438197554335694707215399076312041227678631921336046837557642364451015098251301152264865383981331174974464211560252044146159707962324909331748444989306328067314373917646871499199940390327369343545776976827004272290686462472680220033
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.14
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							bdc34cc1bf8269caade1b100baddaa18f070a400
 . . . . . . . . . . . . . . . . [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 c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [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 (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.i.lencr.org/'
 . . . . . . . . . . . . . . . . [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 (20 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mmn.itimes.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 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 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://r11.c.lencr.org/88.crl'
 . . . . . . . . . . . . . . . . [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)
							00f00076000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa340000019725ac3017000004030047304502203a3213abe52e14f05f7e7d770c5afea9743ed3be8fd2f8371dd1b587e7bb0696022100dc23653b3802d490e939642daba60b159e3d4968ac55f3a4b897335504601847007600a442c506496061548f0fd4ea9cfb7a2d26454d87a97f2fdf4559f6274f3a84540000019725ac37e7000004030047304502204636c73a84064330fb21a57b6354ed4d761de03ad3b9c5fb329df9132f5c25c5022100ddf34e8914aed90a9547ac619e22396696a5355a1f9bebf0433bb413555192ec
 . . . . [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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