algofoundry.studio

Issued by R3

About this certificate

This digital certificate with serial number 04:2a:58:93:05:6a:b5:46:24:42:e5:b5:fa:c0:71:e5:d7:ad 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=algofoundry.studio

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 04:2a:58:93:05:6a:b5:46:24:42:e5:b5:fa:c0:71:e5:d7:ad
Serial Number (int): 362858738578854014096028899816545288837037
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 7a:b9:4f:5f:9a:f2:bb:19:c2:94:bc:c5:c5:e2:13:f6:3a:15:67:1f
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 84:ee:e3:70:61:e3:79:1d:99:0d:8e:bf:f3:38:e9:fc:4c:24:06:23
Fingerprint (sha256): 0e:08:d8:d8:03:06:73:79:9c:26:5c:13:4e:0a:85:f2:4e:98:98:ce:12:be:41:f7:19:88:06:69:15:4b:59:0d

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

Revocation information

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

Check the revocation status for certificate algofoundry.studio

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for algofoundry.studio

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

algofoundry.studio
www.algofoundry.studio

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www.practicalpriorities.com
academy.mhparks.com
university.cdtsusa.net
courses.algofoundry.studio
university.cdtsusa.net
learn.ricklozano.com
algofoundry.studio
upskill.collaborationassociates.ca
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Certificate

The complete raw certificate details for algofoundry.studio in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwa6USKyiKgvQbGr6LpKO
75T2gdSXqctCtOR9h0HIAnA8ZjihIYzRUfGC6Ie4hYuVk5K0ZBTsrOB2COQDc6jI
9Iiihg8IDSmHGsHcLs3sMFr1u3uEokiRuL7QGANkI/EXNqwi/WGhQq6kNlid3tFk
4UqGTSdrvvWZzgbF5pRnOQjdf8x2rGcfLcJ44a73Nth2jHav5luL0yQUrLeKc/am
cXKGgrLxC2ydJZj/fiGV4AN0O2QCeLVbVyvLJPpBqxPfPWzQOYLRnwYkj9Q9nZTO
WproDr5QpGjfeMlTE4CmDKXjBpnGe9YpNLDGdFWd9DZ2MgDf2anlGO19C20IH4Qg
HwIDAQAB
-----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 362858738578854014096028899816545288837037
 . . . . . . . . [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 2024-04-10 09:10:03 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-09 09:10:02 +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 'algofoundry.studio'
 . . . . . . . . [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 24450081087248759613034138583203547363460274902259856714374939683671336016157694779250049058801196843739963125415158247724182135280631324835987557699043432161657845032639510847866087707304533733450381076064489251617167778304290852929950145010509501189364900917274601402212536668776258875976634502438122491140200694795323026837031993694833934288814822539332175286046684401075081580722587270649194458316837480687159365333572972556234806223815581439668634958291635792903899221159496082037640437079112009823228575202604013960054673514977468270229597212196929351157686260175331046084497407609886299571680652348966268313631
 . . . . . . . . . . . . . . . . . . . . [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)
							7ab94f5f9af2bb19c294bcc5c5e213f63a15671f
 . . . . . . . . . . . . . . . . [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 (46 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'algofoundry.studio'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.algofoundry.studio'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f000770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018ec77c6c4600000403004830460221009e636a32fdc5eaf7b80b93aee942105b4b3474253e4cd0dfbe7dee836bc87d1a0221009d72bd2466d1d207e38cc28fba4c2c1974ad83c15134ba02a7327ccc5bb846a500750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018ec77c6c6900000403004630440220529d5bd9422f973f2322ae8f97dadf211b5de97d79acfea02e10486394655e810220757588522d5929513c12b969c6259fbc211b8f5a957dff7ff2f815d8c98e9f9a
 . . . . [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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