clusterresearch.co

Issued by R3

About this certificate

This digital certificate with serial number 03:90:ac:dc:7a:4e:1b:72:70:c5:c2:ed:0e:14:12:fd:72:a8 was issued on by Let's Encrypt.

With 4 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:
  • 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=clusterresearch.co

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:90:ac:dc:7a:4e:1b:72:70:c5:c2:ed:0e:14:12:fd:72:a8
Serial Number (int): 310567290633122024637793496501989091930792
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: ac:86:22:87:0f:d3:8a:2e:fc:55:64:0e:b5:00:c8:98:9f:33:e6:06
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 9f:2c:41:2c:c9:cd:f0:f4:a2:b5:06:ec:ba:b2:05:bd:e5:41:eb:54
Fingerprint (sha256): 3e:83:9c:66:d0:7b:af:b2:50:90:97:d3:56:13:19:41:f5:fd:8e:ed:bf:85:d5:a3:ba:09:b2:ca:a0:d3:3a:43

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

Revocation information

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

Check the revocation status for certificate clusterresearch.co

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for clusterresearch.co

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

clusterresearch.co
clusterresearch.lavenirapps.co
www.clusterresearch.co
www.clusterresearch.lavenirapps.co

Other certificates including the domain name clusterresearch.co

(limited to 100 certificates)
clusterresearch.co
clusterresearch.co
clusterresearch.co
clusterresearch.co
clusterresearch.co
clusterresearch.co
clusterresearch.co

Certificate

The complete raw certificate details for clusterresearch.co in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA22qs7idhYdTnV9CFxOzo
KeOsn/TGnltvcqdUPUW5qlsMLdb60u4qFM2om6ufNM43ofrdsxpu9itMbYx9LWgu
P+cidPPYt7AnzN8Z7Qxrb/0Nhy06j+dW5Bv0j9JM6lq/MecqCjhA6eRRBFU4RjN1
xVxBAeVWQBYVFOUw/nSLdll1lTpdkSVYkAKkecyjMQCqzna5QQT74f+noYe9PgpV
RkfoBle4N0RgIvDOt9taZzpK9h7A1ftQnYL49r6dXJZRP/nRMOFyj4TvyrZrTCtv
Ba4QDMs9crTSi2Vk4ubfU7ksGfM9KY4ZdNKu4FzAf9jH4Bk/sbCyPS+bt+SYenTM
5wIDAQAB
-----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 310567290633122024637793496501989091930792
 . . . . . . . . [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 2023-11-15 22:31:37 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-13 22:31:36 +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 'clusterresearch.co'
 . . . . . . . . [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 27698792441589719155271303823438615076396314335710214875733903048111488229766575190596487112115128140080733559863733951053531088225956032548682302308228471897406134120518632957237232716828283013156445313523919802951161581591383011481062830524501776080036717117627254934548291442141389855225158620571537696090986811052595196731014932078459877395717438657145593338509647909709843400868216128235596222880060999983887469219501997197408309502366461667111701298829144216306339491354744292415111701252117122598383553937817639261748083434067394641446835567940269595730605444725028723107523731362223160628544605637252960537831
 . . . . . . . . . . . . . . . . . . . . [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)
							ac8622870fd38a2efc55640eb500c8989f33e606
 . . . . . . . . . . . . . . . . [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 (114 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'clusterresearch.co'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'clusterresearch.lavenirapps.co'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.clusterresearch.co'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.clusterresearch.lavenirapps.co'
 . . . . . . . . . . . . . . . . [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)
							00f000770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018bd55372700000040300483046022100a7b9ece3e3f580a0efa66b81d4cb7ecbc07097fcd8a188594f9ce448fd63e144022100d517eed7e74562e8478924abaa62e8a7dc1d27e31cd9902224fce952a525ee9c0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018bd553729a0000040300463044022038a04a62602771a3ece4e9f202ea85d9fcefb4f49381e525cbabdbf5e89cc23502200cb43cae0fbc913fcc3fbdd9cf85d3013eb554722860a0d18611d85e19f302c2
 . . . . [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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