about.belong.co.jp

Issued by R3

About this certificate

This digital certificate with serial number 03:94:b7:fa:eb:d3:fe:ee:c2:2f:54:94:36:1e:f6:7f:3a:2a was issued on by Let's Encrypt.

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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=about.belong.co.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:94:b7:fa:eb:d3:fe:ee:c2:2f:54:94:36:1e:f6:7f:3a:2a
Serial Number (int): 311943199680185202826603873716532661926442
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 15:35:c4:8d:e3:fe:63:70:be:79:c0:15:0d:d7:de:2e:a5:53:a8:47
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): c1:71:08:b4:a4:c1:33:5e:09:ea:66:a4:1d:b8:c5:6b:84:3f:b4:23
Fingerprint (sha256): fd:26:5c:47:d4:d0:49:a1:f3:da:88:2a:ba:a9:67:35:59:f6:f1:b8:8e:da:19:25:a8:d3:a1:04:05:79:52:02

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

Revocation information

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

Check the revocation status for certificate about.belong.co.jp

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for about.belong.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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

about.belong.co.jp

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Certificate

The complete raw certificate details for about.belong.co.jp in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIE8DCCA9igAwIBAgISA5S3+uvT/u7CL1SUNh72fzoqMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzA3MjUwMDIwMjJaFw0yMzEwMjMwMDIwMjFaMB0xGzAZBgNVBAMT
EmFib3V0LmJlbG9uZy5jby5qcDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoC
ggEBAK62CfvqYAEccdx1NrxyycV1jCcCkmM8htc9H5hY9fWCSOcqqHrHccyo7yvT
Xd+8hJbJbAi50T78fA9Ufjl6kuro8GZSHVcEKfz0sUAMgQMSa01BOBvtOCashY8a
PklJatNv453nbTzlyIJWvDbVv/8kGMVkuTRIU/OM3funsbtM75gkZODBMDnLYAfa
GQq4km5RUOSPrM61QArW1HeO7gFxp+uaKGN5UEdpNkgRtN1BqqV28kGtxfHo9A+o
kvXu+rqc2BlYDFMBxZa6r5smqlX3zOL5SXonYY5OTc7z9HavuKC0t+9ch+bhoxBh
DsMssIEo5YiN0vS+5PSrk1SJihsCAwEAAaOCAhMwggIPMA4GA1UdDwEB/wQEAwIF
oDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAd
BgNVHQ4EFgQUFTXEjeP+Y3C+ecAVDdfeLqVTqEcwHwYDVR0jBBgwFoAUFC6zF7dY
VsuuUAlA5h+vnYsUwsYwVQYIKwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVodHRw
Oi8vcjMuby5sZW5jci5vcmcwIgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5pLmxlbmNy
Lm9yZy8wHQYDVR0RBBYwFIISYWJvdXQuYmVsb25nLmNvLmpwMBMGA1UdIAQMMAow
CAYGZ4EMAQIBMIIBAwYKKwYBBAHWeQIEAgSB9ASB8QDvAHYAtz77JN+cTbp18jnF
ulj0bF38Qs96nzXEnh0JgSXttJkAAAGJiqIKKAAABAMARzBFAiEA0ddyfQx6ZFYI
+5lGHMk6gp0wmZp44xNn1UjgXIK1Qx4CIFDDqAqsV2k2usQaUDr363lfx1W0JxJA
BDTSkl+LFmlsAHUAejKMVNi3LbYg6jjgUh7phBZwMhOFTTvSK8E6V6NS61IAAAGJ
iqIKOAAABAMARjBEAiABCQdZi7dA3NiQe+tbvoTRA0wx6IiJMqZ7gj5iaPyZpAIg
PFyEcjrdW0xwknIZYxZ47cjgpc+8ap89+9jKnzO9r8swDQYJKoZIhvcNAQELBQAD
ggEBALrRnm5JdaMXLrgopluSMFD+l3sZJ0dPtls8EKzbNcCAx1yuw8Ls4lejjTnJ
zSbbDTEHeFEq1yLnAZFQdOysCt5CqZdJaIQpOa5gGsvta7yzIzptD3lbd/mPVs6A
wD0VTF/Rhy+DFwizC4Zf9zXf6nSPW9O588pmhfJ3Mn/4wu6vDvybjj/SZPAYVvWu
rVMU9dOoWwZev61Jx9gsg9kAoJQ3DeHmItJP9tJLDULQ9A6S6Ge+gWvpJfgZrXUD
x+1nOyWaCwJ979MuBAiRLBLTwoXS3TfJ+wouzI/JEfgXr7CTZS6WpNO+Yrwa+Wg9
zhlvPz6i6pVyzCHpa0CdSxvTq7M=
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArrYJ++pgARxx3HU2vHLJ
xXWMJwKSYzyG1z0fmFj19YJI5yqoesdxzKjvK9Nd37yElslsCLnRPvx8D1R+OXqS
6ujwZlIdVwQp/PSxQAyBAxJrTUE4G+04JqyFjxo+SUlq02/jnedtPOXIgla8NtW/
/yQYxWS5NEhT84zd+6exu0zvmCRk4MEwOctgB9oZCriSblFQ5I+szrVACtbUd47u
AXGn65ooY3lQR2k2SBG03UGqpXbyQa3F8ej0D6iS9e76upzYGVgMUwHFlrqvmyaq
VffM4vlJeidhjk5NzvP0dq+4oLS371yH5uGjEGEOwyywgSjliI3S9L7k9KuTVImK
GwIDAQAB
-----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 311943199680185202826603873716532661926442
 . . . . . . . . [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 2023-07-25 00:20:22 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-23 00:20:21 +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 'about.belong.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 (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 22055231840734516470040927643175428700062481586547773592467342614178959368767269449971495875922997507441398081615609635587120392171165297408553571628481713973701203823056797464108460435087018626427748349920427465330210659412246360805724811792946842002697123293232924389742989261883149270149168275999739647284840569246242348951711193408116752717490674781234542401403826438497842355994013848045974769421971865637348421888100626676211087259563419667333536146656051475939683947370055085790908430789349718528579109325308855943598619912520250140450411834898354111043590448260598758993375148953712876437230559940716756830747
 . . . . . . . . . . . . . . . . . . . . [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)
							1535c48de3fe6370be79c0150dd7de2ea553a847
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'about.belong.co.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)
							00ef007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb499000001898aa20a280000040300473045022100d1d7727d0c7a645608fb99461cc93a829d30999a78e31367d548e05c82b5431e022050c3a80aac576936bac41a503af7eb795fc755b42712400434d2925f8b16696c0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb52000001898aa20a3800000403004630440220010907598bb740dcd8907beb5bbe84d1034c31e8888932a67b823e6268fc99a402203c5c84723add5b4c70927219631678edc8e0a5cfbc6a9f3dfbd8ca9f33bdafcb
 . . . . [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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