www.tokyo.seasea.jp

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:5e:99:64:04:c3:a6:d1:8e:70:7b:14:24:84:ea:ac:a0:85 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=www.tokyo.seasea.jp

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:5e:99:64:04:c3:a6:d1:8e:70:7b:14:24:84:ea:ac:a0:85
Serial Number (int): 293527291495520659071411862058940496650373
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 09:f2:7a:75:d6:91:4d:a3:e4:47:1c:27:39:f7:84:5d:d1:30:52:5f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 7b:26:d6:29:2b:3a:d4:f4:5d:7e:5b:90:a3:1c:04:b2:47:3e:d0:03
Fingerprint (sha256): 17:f2:0d:f8:cc:80:2b:93:8a:49:18:9d:b6:83:79:f0:aa:00:0c:bf:a7:4f:ce:ae:94:97:2b:63:7a:fa:94:87

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 www.tokyo.seasea.jp

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.tokyo.seasea.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

www.tokyo.seasea.jp

Other certificates including the domain name seasea.jp

(limited to 100 certificates)
www.seasea.jp
www.seasea.jp
www.tokyo.seasea.jp
license.seasea.jp
www.seasea.jp
license.seasea.jp
license.seasea.jp
license.seasea.jp
www.seasea.jp
www.seasea.jp
www.seasea.jp
www.seasea.jp
www.seasea.jp
license.seasea.jp
www.seasea.jp
tokyo.seasea.jp
license.seasea.jp
license.seasea.jp
license.seasea.jp
license.seasea.jp
www.seasea.jp
www.seasea.jp
license.seasea.jp
license.seasea.jp
www.seasea.jp

Certificate

The complete raw certificate details for www.tokyo.seasea.jp in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqhJShEk/eqrX/J8vB858
KrMoWtt6nZG2j24MaU5UUsyITw+avhUVdVXWvPvS0w9dNp9S5J6Y3lwm2Hg6p3J1
IPEkMzeveEv3P3+7mqQnFj6HXb6/X69WdCRNRvi+4VayYcPBNGYHObaZ4Yb8Lc6D
Gv6ywgzHBGPgtCGG9Fesy2DPvibIphVxfTQhGll8nXM3DO6IuGetzvCozP2/vwpK
Zh+8T/+a0myxSq3s+Og5hVDyIgsAcpEorSs9raRCabA5PN7834XVD0J1vIyLfIF4
jXIk7saPNF2r68fV3oDJPFiYS745MwYyv+Ctbf3s2vBV6YsQA4F1XQ4oncQo2SXg
7wIDAQAB
-----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 293527291495520659071411862058940496650373
 . . . . . . . . [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 2020-04-02 01:09:38 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-07-01 01:09:38 +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 'www.tokyo.seasea.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 21469546922400898444687336323562104189161598401263458295252880343717135280562290533248424783482467896582940003617299500934230502641789513178654356902806696752969184471003971165722764092468334947521395393868569650378471238819814005464655718743273190735883143088105851579710924099794159650805800735903866446101748761743563858349259828576782524646504890396668729851505811189557301566752047378395590940002553758187414163589143867197552374878964926010910504672270987538298996696332491732500322222997521996459458323609800860907619438382552862995107896941865535712699974886979196701089815312005473709093713102850580950671599
 . . . . . . . . . . . . . . . . . . . . [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)
							09f27a75d6914da3e4471c2739f7845dd130525f
 . . . . . . . . . . . . . . . . [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 (23 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.tokyo.seasea.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 (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)
							00ef007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000017138a6a7a0000004030047304502203d66b5cc4d3fb06857aa7c10eb2598cec4eeca87b9e116d1a36049f8d594b2ac022100b21d72343557be7ea04801e57f7f8c3a0d15617029d8159a6ad580769d18799b0075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000017138a6a7f400000403004630440220069cc377eb0866fe5ddcb9786d5e918fb56f6b502c49c6466d40e089acac6e96022047afe169ed0a137d5251e945a4808cb24376708f7dd6d4303ae2d0d5b6b58067
 . . . . [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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