tokecang.net

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:49:78:e6:bd:c7:ce:6d:6b:0c:3c:ea:d2:7a:4f:b7:4a:f2 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=tokecang.net

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:49:78:e6:bd:c7:ce:6d:6b:0c:3c:ea:d2:7a:4f:b7:4a:f2
Serial Number (int): 286338176017486606308761876245535658560242
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 30:8b:31:51:bd:2f:4c:8b:2b:1b:77:a4:f3:f6:fb:85:f2:3e:68:4f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): d8:93:05:91:5c:b9:2e:77:94:68:38:c3:f5:86:a0:70:04:e8:6a:de
Fingerprint (sha256): 1c:0e:b1:b1:da:05:90:bc:2d:d3:17:63:d2:5d:64:00:6f:f7:5a:09:f6:b8:41:89:a4:fd:e1:e7:62:1c:96:50

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 tokecang.net

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for tokecang.net

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

tokecang.net
www.tokecang.net

Other certificates including the domain name tokecang.net

(limited to 100 certificates)

Certificate

The complete raw certificate details for tokecang.net in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA2awxvI+V3juzZ/+24XvG
N4qqLkowYoExAAkjk51gy+/RB1oRH5R7BQX3CFzKkraQbJnLpS2aYWda5zjdhJUb
IKR5NeVhNY4+MO6reOm6vnDN6wFfYS4/xrs9WRdfT3U4pU2Nax6vo0dhjAWZGwi2
W5SIDAvr/45gbywtX+oajNLgDaudbTJ/zyWgC609E4u0TSSk8Te696MjITYUwQG6
hKNg9Mz8yskdTUauA01dDdXB5o1syUmTTX7MPx8QV0sdpEkOtAjyB9LGitpfui2f
hYOVZ6e+91STyY+4rHL/uoqgrpIYijybOJ6Hotumqg2lytUNBtjCkect5KOO3he4
jelAWdqHuUqFMXG9spOb9wHOCiuDAWNbaw+IhFzmC5y7Db/1DujAU6J4+Qcda3kr
e2DcixZOz2Cb5DRR4dFdRGyuQStEW9HkxzocEztvg405zycEu//QiZiWv60iQXzo
aQyd9ZDMTApF5txNt73RCD4EeV5m9nK42baqLZdqAeIzXKPMa8H6+SSLjttvBRF1
02YgQk2iAPSblvzR77iN5l0pvUu1LfsISQU5+ysciXvgCkOUnBvrWma5x2LjO1QI
1SAo1I6l7X7M7m6rGdsAIyaaze5KEfkMX1cspjm2FECk+T1f55hEs5JUKMIv0yjU
pe2ymVem5pALldiIBAqQrzsCAwEAAQ==
-----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 286338176017486606308761876245535658560242
 . . . . . . . . [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 2019-01-28 08:03:52 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-04-28 08:03:52 +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 'tokecang.net'
 . . . . . . . . [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 888026869741099697149565229289728460412909541005690902404898241493023436228216496471854751989777332392142912798422884707167859680610636788155482294712522257073898998135663012303546357820632000471113051433276835791510345438057052491653046121561243780553472213899345026714803530227855325923723499100544976025257239747938953179281068110513749375173986205333246399958908870230146336517969696947121761244923514608974100441173521378874180640194820229146039776632822393484750549660255142290667801350880008622072654017165224279378051900587698292636972995870807613199634470270575163138475458287989601666586091885065566830786850724529784302762255780417346134921213467037563810054683803300890506563230670968813408003011021723267384569801717321598851538163316184791126418540199861509284769941693237484383695935639303786049729756611454151891868648739347108822627150731285630728402906495332535485814083395919808332157764762248655880213225417278566571657629056653902268028541650084016386564786396360855183388993219921968750707952255935842400097827620025507835119610312167601223484706043954868571903437037004141296229237516504307526439154710640373339002386860537342661036289795637984860752572666501771671695296003535873148581288356512260431742545723
 . . . . . . . . . . . . . . . . . . . . [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)
							308b3151bd2f4c8b2b1b77a4f3f6fb85f23e684f
 . . . . . . . . . . . . . . . . [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 (34 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'tokecang.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.tokecang.net'
 . . . . . . . . . . . . . . . . [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)
							00ef007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016893b35e720000040300463044022074f5c277e65d5edb21a3e28048cc37c2f4187b448342e853b66478e71cc8b82602205070816689afc04331182aafd90e6f595c48019e395b6fa2bf9373752bf47936007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016893b360cf000004030047304502202bf29a4c2a382c53f13420dd8a0f8fd79599ff9aa69a6fd19b3fb31fd8775f35022100a71f0f642963344b48bd8b40515db1a038971758ba73430a4f7313f9757022f3
 . . . . [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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