chalkdoc.com

Issued by R3

About this certificate

This digital certificate with serial number 04:bf:14:29:83:64:1c:1e:5b:a9:41:2e:50:af:73:8e:e1:e0 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=chalkdoc.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 04:bf:14:29:83:64:1c:1e:5b:a9:41:2e:50:af:73:8e:e1:e0
Serial Number (int): 413469875917954307964093385788167841309152
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: de:e4:9b:4c:6c:7a:ac:06:21:76:f5:6c:14:31:80:af:1f:28:f9:0c
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 5a:ab:52:a7:67:d7:16:d6:46:d8:3e:85:85:60:da:9b:ec:00:10:e5
Fingerprint (sha256): 8d:0b:eb:13:94:89:f2:eb:46:98:df:f3:59:f5:b9:9d:69:2c:3c:89:a6:20:c4:33:71:8a:73:f6:4b:1b:70:bb

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate chalkdoc.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for chalkdoc.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

*.chalkdoc.com
chalkdoc.com

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Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAy86CZx2sAdQrrtUGRoRZ
jUgbdMOA3UxLeOkOalaOLCRncXTIpyHbVTEJ+2cNxxBJql6mgjlGOONa5pxs5iDP
mxKRxM1ds5NXfQVpd3zTrPdhlizO7t+17+GcPHkMc9qW4R1CBf4VXkE/h2NjliiH
VVbuBXKb7DHig0O1zHz5eiWMsNggElqqK/+QW6vsvAS1O0ed+6sR1LCixqVErDm0
L+4h0mqvFCx6APjYGsK8U0t//nN76SBcrIeHYr4504YsVH7aPF2sS3sg/SbXTnkd
1EdcSZLaUxwK2sdbgetgKAmHUdQk6kN6NI7VO1Gp9twx3bVZsehvNDdRSQVGwzbf
AwIDAQAB
-----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 413469875917954307964093385788167841309152
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-14 06:10:40 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-08-12 06:10:39 +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 'chalkdoc.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 25728209481698217945517370709529595667295751948696846432723183600856414898887800808915369147440394503331567073873882184121549393040659587169155154264498463222796093848867404371754256088279145047258125439226525431530521412133950800510879080221933071377971803408819234838951395427258634617075423641107821936511267017421822360699847867624577692051976655799367877890618042093170322999484282654238740291545458475484321231738485151924562304229930085638529984791524838887021006220358248034228070935253086871828970895021721492896258708108991501808983036010535150729306065468276681008795403463054746685124461253382897566932739
 . . . . . . . . . . . . . . . . . . . . [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)
							dee49b4c6c7aac062176f56c143180af1f28f90c
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.chalkdoc.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'chalkdoc.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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef00760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018f75f066eb0000040300473045022100948c49b88f2857701d10436b8045d55bbd7eaa61cbd48323bcb9a0892eb5a4e3022030f863e2a98c693d2628a10e5c032b68d020448ce0f745fc6572654b9c2e7cfa00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018f75f066bb0000040300463044022043d2ceaef7b885c4c5bb5a39c4bb84cb8cb6d96236b64bc9a7e1c7411c3119e20220154e48f1d49009168711186da91ad304999692852b75af8ad2696d989f12cf48
 . . . . [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)
		00a63b845b1230ed259d355923b6a6dd733e7de6a92c91e85fcd8e6d6b0467aeaff9cdf2a34cc14f570714eecdc5e812930bc78743082fc9aaca69c39708f0ba0623082eab3d6c76188f16763983a7d98914e98cd1737dd8e00bebbbeab1caba22d205b6a923d3d90043a2c66b86c2d283cc3996009e978e1b660fcbddc247ddcce0117f1c14034d9eb0b809541994555b89a6279fb3c144f0e40032e0b902d568998e447acb452d2732662796f09db657adc5c384ac7e28695a93c712acd08fc7c5eba49bc8fb6a988e248f7eb2282d2d84c56036f08ff1d1bf7e9f68f795b1c5ba01205872bdb545370c7ba9ac195ed2bc4bb1ecb5260369d8fcac7f69c6d038