takeshi-seikei.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:1a:4e:a0:ca:36:cf:0f:cf:9d:45:88:d3:9b:33:8b:0e:8e 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): 03:1a:4e:a0:ca:36:cf:0f:cf:9d:45:88:d3:9b:33:8b:0e:8e
Serial Number (int): 270288713987782872225185523907836232011406
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 23:40:9f:73:e1:12:0c:c5:a0:3d:76:b6:a4:f2:23:1a:a1:a5:c8:43
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): b1:5c:c3:4a:2c:0c:fb:74:bb:25:1b:81:29:66:42:87:2c:e6:ca:17
Fingerprint (sha256): 56:92:a1:54:b9:a1:b2:cd:41:6f:da:b8:12:c9:d7:44:80:9b:f1:1e:bd:ef:78:f8:f8:23:df:0b:0c:51:28:95

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1OBIUArUQ20vQVluih0i
HTmokojc7z5CN0qYDU4rZPLp0GpggQuUJap0CITWmj/ewRkLr8RoLMT7b8TJQ/bE
Z8lHIrWwEoNUYUgXHf/46Y2vOO9PaFa1sw45Zy/mavYcZutC0z63G9WmlQUG2XWo
+noZULTrK0vKf53qpZT71UBxGRdqVuwCb19Zkm7CQz98LSAAieu5wmwNcyuWW1Ww
Yj5P4GnL/BC50cY6A1czzAG5z/MykaUDiwHSQMlMBPIiAwVaLTUjl8F9owvDSKKR
T8JjJIjUJeR6y76/c9NJ9rdqUOE9uA//C71lc3ufoRW4Ai+vbDyGduh6ZxB5RZo9
MwIDAQAB
-----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 270288713987782872225185523907836232011406
 . . . . . . . . [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 2019-08-24 01:52:10 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-22 01:52:10 +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 26873118461463197341783417914405522807857115230578704061621846869882319310064359774526697628313213116539250618530669081513134215721161558367194717237991058375487563950297550958456006428422459873691234045372685389342208701411878075950427243090722655188031645632502210798818272466031384671913135222775060163154489230847213696034067028965332023031452956416021294878891857005715756513755788472173782797440049503402394630918792661539372086753185625910340488037629448327153132823143255685927371901849571035197941730257561108821360140706848641800217154679994084280876038366901090601077922563461866141775504931842585735609651
 . . . . . . . . . . . . . . . . . . . . [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)
							23409f73e1120cc5a03d76b6a4f2231aa1a5c843
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007700e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016cc189d2e8000004030048304602210083096ce6f09fa5b2d1cbdfe9ddd44dba65cd30e48c1a250362f78f8bc48df94a022100ae48d02cf75895e8a4c3ba24227bbdcfd524f7e23032ee12d1f687fdcd63278f007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016cc189d4fc0000040300463044022009b41db0badc421c06fc2d24aa1e0d8c17a2ac71249517848082aa50b816537302201251aac2e15b3f50cd63d09feb2c204c8a6ec46e328d3a0d36a83a7842f481d5
 . . . . [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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