www.tkyo.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:34:eb:6d:fc:c6:81:2b:d3:cb:20:00:ea:52:a3:27:a4:db 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.tkyo.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:34:eb:6d:fc:c6:81:2b:d3:cb:20:00:ea:52:a3:27:a4:db
Serial Number (int): 279344480541430948414599888231572772988123
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 72:71:67:5a:29:9d:6f:5c:30:d4:f1:21:7f:75:41:db:4f:dd:df:74
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): ff:2c:5a:52:ba:36:3f:94:4e:66:7a:aa:95:5b:0e:6a:b9:a9:1d:52
Fingerprint (sha256): 79:64:dd:5b:b4:f5:fd:f9:5c:14:d2:62:47:44:76:33:f5:cd:ee:66:b0:13:aa:41:17:92:4f:3b:9e:f6:26:53

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.tkyo.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.tkyo.com

Public Key Algorithm

RSA

Key Size

4096

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.tkyo.com

Other certificates including the domain name tkyo.com

(limited to 100 certificates)

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 279344480541430948414599888231572772988123
 . . . . . . . . [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 2020-01-22 20:33:10 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-21 20:33:10 +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 'www.tkyo.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 593464280008499958044890189727851654161480826517642867830903087168043555093430215676462621369002384034015896937532173586472203069176585255939024097476765304654956694696331915452044986321414828989314668624756395723638521216378182761441864483423578050719418333598501217124237572605417309636398956195116988369964044096532096500553181535707819627580139787058462924957708133230373021139652027057436672438939012777979687579240852808296229358581851069446337888497172164667678721539813593110728276089853153923452351858977624445433739794704289007958623222628881704300687162114607066158878975098389087867264865893200045405508859807714352288435934470330933186721502830897258010035049465625122701439450769319198685365786401767685918898692164537728154693103649674639112464071946686747554877841893233870498669961095411397917029900087528918691677084353381975038776594916659161753021124041788649518810227282865365146913721275301674689503993346457105589967897605209906915305987393303410543549691673785654243966678686290897596954999610321762128519924367328343606932519615251267383163752735573917537054749507993566848110220189117712035570954371373935785460018006845990822469299672004277226535116579426883176608620882292951554616939272596009650420192711
 . . . . . . . . . . . . . . . . . . . . [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)
							7271675a299d6f5c30d4f1217f7541db4fdddf74
 . . . . . . . . . . . . . . . . [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 (16 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.tkyo.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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016fcf2c64eb000004030046304402205b6d5b8868f274be62b5a2a1831ab94d5ebfc4c9bb588d6b56ba4d6179cf1e890220681ab5ec4ec8655ba8c19cecad508690eba0e2e4c61f4d53fd048f5aa977d27800750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016fcf2c6515000004030046304402205a9e0404673dffbd9ef692121c0168232bf725998818cdc43a1295accada30da022028fa374004e9e708f0afa19d99243c59b96ea329a6704b525b5ec49e4fb6f6e2
 . . . . [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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