chefsskolan.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:12:91:ca:87:35:b5:41:51:24:9e:55:15:3d:35:85:47:27 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=chefsskolan.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:12:91:ca:87:35:b5:41:51:24:9e:55:15:3d:35:85:47:27
Serial Number (int): 267655730045592353975339089106719715182375
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f2:a9:4a:b8:95:36:cd:73:b7:ce:fd:3b:a0:48:f0:d2:66:ee:1f:66
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): f4:eb:2e:00:8d:e5:0f:2a:de:20:be:bc:57:46:b1:db:26:6f:03:26
Fingerprint (sha256): 94:2d:93:08:4c:59:e9:62:9c:20:df:31:d7:3d:33:9f:2e:20:a7:8e:26:52:b8:1a:40:5d:23:b9:85:b8:1c:a2

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 chefsskolan.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for chefsskolan.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

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

chefsskolan.com
www.chefsskolan.com

Other certificates including the domain name chefsskolan.com

(limited to 100 certificates)
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com
chefsskolan.com

Certificate

The complete raw certificate details for chefsskolan.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 267655730045592353975339089106719715182375
 . . . . . . . . [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 2017-03-10 06:08:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-06-08 06:08:00 +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 'chefsskolan.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 722013136444717672713851610180901361403788715322289268582140112107206872339325752590115247743781802559381054621949066647962228899342251555047320158971008712794099766135502994480503688825249180423738171546639306814818099813466382446514087770061831017858554482861937874328445046836462098996363093837015543451511563978150973176854155518193633160820968135064305494505383158404211152723931489122538735081373034343962963809644780305612570244069448591959450838478165655794579922116531524377751553711367393261931927985854075594804759947475150152285383052563514105411922340875108489900698361085079190688328283423572737364763296678410408529790722574958164115505949975373127860338056978726000383938134028970643878950854637632823175710965771972062288025183641294034153590014926393148106065523338261544468691303479048336155780686012214409862719515076498242337385783620154299408531461931185675657140993717378198160872164875220354826968843672615804434938544696135833629261414103532226923247706162099655628345494964933074895964008146951685913160063992803775919641443733490759896153454806813938506628007206819299832499292122427904197304019873644297230424131224115311374933008821166954679467589791930934370709557183347309735593545426154471028709652113
 . . . . . . . . . . . . . . . . . . . . [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)
							f2a94ab89536cd73b7cefd3ba048f0d266ee1f66
 . . . . . . . . . . . . . . . . [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 (100 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 (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'chefsskolan.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.chefsskolan.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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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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