www.akiramiyagawa.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:8e:74:d8:76:39:eb:89:ef:1d:0b:72:a3:45:b5:cc:80:19 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=www.akiramiyagawa.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:8e:74:d8:76:39:eb:89:ef:1d:0b:72:a3:45:b5:cc:80:19
Serial Number (int): 309812268279599729739232347418247962591257
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 9c:b5:b7:61:75:41:09:55:55:d2:ef:5f:cf:ff:c9:cf:75:11:bc:40
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 9a:ca:a4:bb:e3:d2:2f:a2:2b:31:63:db:a1:75:57:8f:cd:e0:fb:70
Fingerprint (sha256): 93:79:a6:c0:d7:7c:af:7f:3b:f1:3c:be:e9:f2:77:85:87:e3:61:5b:dd:1b:39:b0:48:40:f7:7b:d7:df:91:59

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.akiramiyagawa.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.akiramiyagawa.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

akiramiyagawa.com
www.akiramiyagawa.com

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Certificate

The complete raw certificate details for www.akiramiyagawa.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsuCKTGfD1dBn4HVcrBW4
xFWzNw/JwPkNpsO2n1WN7iwXQPJLdnioCD/acL2A26/qvTIhKzk3yfOdgC7BENrL
BtqGnE9yQ6K2CjDyIadAGRhfy5JfBki5a5Nzn/Jzd3FRjmr5g4j0wEWoRD1LEsiC
7u3wzAzXY2ys16v0yEfy4vpeb1LKhxlLMcGY1TuaqPkIc8Yxt77+1UXTxDlLk82+
17iE2MLABdd3RGRVNTkXSPz6hmC4Bn1Vsw5MBOGzQ6PuuuwSp5lpGC/AEzUOjhVa
SOUgxS6DGoNTdm+8c/l51xO8OIvOTbRVkZHfqzqjy7JYzi1iCbRg/Gagfuj2Wufk
KwIDAQAB
-----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 309812268279599729739232347418247962591257
 . . . . . . . . [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 2019-02-22 06:37:47 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-23 06:37:47 +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.akiramiyagawa.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 22581143197333257862634702573747048212305810894614133938746822284322111936666913345924917295007604035206386143263908524234989088025604421108832319225862665043771658215595795865583668421669137786451568224404807504818188322295895463120301315294131409800590768043152966088326603019727234901561889436565224665350703983110331733304519160469802844506227786037549175081899398890169581017272699631956212078170252695577907688552632664287848919766592577045500995459567817657207037204606974697806150970597719258914878729936772716748814095629104425312876781077853661294610360411600126648554238724994998908037894031465817901098027
 . . . . . . . . . . . . . . . . . . . . [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)
							9cb5b7617541095555d2ef5fcfffc9cf7511bc40
 . . . . . . . . . . . . . . . . [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 (44 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'akiramiyagawa.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.akiramiyagawa.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)
							00ef007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016914238cc200000403004730450221008610b58acaf94667a7e0c49e2dcbd662861a1f9fb025705741032b934d31c99a02201f5501df8289dac113672b4018b8819a484897549d682b336d565db6d1935d5200750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016914238d0e0000040300463044022059d8ca3dbf8c5de070136a1fa7d2c41530ae5167ca2e2376026d7f7d3d7c98ca022047c7f739e3a4dc7f967b53be65ff4aa95591c6781acda0e6fa4f80bb7c1d01fe
 . . . . [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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