takeshi-seikei.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:97:2e:c8:47:74:28:94:42:88:cb:3e:65:b7:46:eb:e4:5d 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=takeshi-seikei.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:97:2e:c8:47:74:28:94:42:88:cb:3e:65:b7:46:eb:e4:5d
Serial Number (int): 312781679596774368365057555801103695340637
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 3e:03:04:e0:5d:c2:64:bc:20:4e:6a:d6:f7:fd:b8:fb:1c:6f:d0:42
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 59:83:ba:d4:95:47:97:08:fa:c5:02:04:68:a5:37:d6:88:93:9a:41
Fingerprint (sha256): d2:f5:89:27:58:01:40:ff:da:9a:15:bb:92:6e:6e:18:40:b2:1d:d1:29:42:24:e3:7c:82:be:fe:af:97:2e:8b

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate takeshi-seikei.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for takeshi-seikei.com

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

takeshi-seikei.com
www.takeshi-seikei.com

Other certificates including the domain name takeshi-seikei.com

(limited to 100 certificates)
takeshi-seikei.com
takeshi-seikei.com
takeshi-seikei.com
takeshi-seikei.com
takeshi-seikei.com.ocean.or.jp
takeshi-seikei.com
takeshi-seikei.com
takeshi-seikei.com
takeshi-seikei.com
takeshi-seikei.com
takeshi-seikei.com
takeshi-seikei.com
takeshi-seikei.com
takeshi-seikei.com
takeshi-seikei.com
takeshi-seikei.com

Certificate

The complete raw certificate details for takeshi-seikei.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArQsEvMs163Bn8Jgym08g
enbuZG63AUBPR423iysq68e8uYO+DQyYnJlknASyPaGYgBOQbelS78Hn6LIU+OPv
gIiWWhRhfYF3hk+K/xoZ7ZYp8yBO2gYOn523Vi9u2qe6nvOb7QF4i3fwGlLw58to
En22QSUCOFi/NUr9SrPzLGRlBlgJqjhJ9hzM1ScC02bwuWa6H5aDo/ovYNzFQORN
2DB+VMcev93TNXFWjCCn+TnpXgXvclj0yaahpXg8ThL9TSXyMDZiG+4paNrJ+ZHb
nStEYtzd7gjdvgItOf7kUQElNbL8/R7168CQzYdz55pty7NzNJZkKwjhVm7gVLQr
cQIDAQAB
-----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 312781679596774368365057555801103695340637
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-09 00:10:07 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-08 00:10:07 +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 'takeshi-seikei.com'
 . . . . . . . . [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 21844660186827309619300574795696845767262514913892931332397092788553736004989443351039569268101793878317775798214149528356413806558794800554576070437268359089326037195426602314431327745877341966477435143357303134330510704555026126103873559200369480050892216521506370409752289479994610270326781332382283006716502783660772653475338326171080901356605804321718860420692027081724764788925201988178664661818367551656022928782975936270788324217796694455075002164630468969944431634845306009429476191390556063887356085161565200044193766145224150543250326947923173387150786069022348779610655931149001597587165221204513927736177
 . . . . . . . . . . . . . . . . . . . . [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)
							3e0304e05dc264bc204e6ad6f7fdb8fb1c6fd042
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (46 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'takeshi-seikei.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.takeshi-seikei.com'
 . . . . . . . . . . . . . . . . [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 (69 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [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)
							00ef0075005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016f87d9f9f00000040300463044022010164b5bc334631d70f1907f97604c7042cf6bbba78bb92f68e7db5e2bb2cdac02205b6da112954c7411205712ed6a648bf5019e80b53da3fd44019b9df08477616b00760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f87d9fa0f000004030047304502205b2571867a66e812e5d5d513995535d0bad5db37cb4d9e40207231f1933b62d8022100a3da9a7dc4719e1e5e3fe50936afd01e57e84bb46bdd0d2af9d7c85d6e9f9b20
 . . . . [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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