clusterresearch.co

Issued by R3

About this certificate

This digital certificate with serial number 03:5b:bd:0e:73:e3:a1:00:f6:ef:52:c8:3e:d2:94:a0:ba:16 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): 03:5b:bd:0e:73:e3:a1:00:f6:ef:52:c8:3e:d2:94:a0:ba:16
Serial Number (int): 292553852318957234265982638395293467458070
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 1e:90:3f:dc:00:28:1e:9b:12:b1:27:c3:a1:0a:73:8b:57:4a:56:7e
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 12:55:d9:a6:87:b9:02:5b:05:5b:11:a4:96:2b:a1:85:58:5c:47:ee
Fingerprint (sha256): de:4b:3c:55:0f:6c:e5:1c:86:b7:5b:f1:01:1f:c3:09:cf:6e:8d:3e:13:39:c3:b4:03:99:11:b3:f8:6e:eb:5d

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-----
MIIFTDCCBDSgAwIBAgISA1u9DnPjoQD271LIPtKUoLoWMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yNDAzMTUxNTAyNTFaFw0yNDA2MTMxNTAyNTBaMB0xGzAZBgNVBAMT
EmNsdXN0ZXJyZXNlYXJjaC5jbzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoC
ggEBAKlo0+z4jqEq3lRZ19+srpQhuE2YgZOKIBPTZPHdyw8g+3aC+yHPANwx4xfQ
RfiijTkFYKicX6TIZ2bAGONI+a+EeQgJ2LdH2xaGkrdQATUgKScYEr8kzjUW29u/
bPyOLvkl4he3ifJBFjNGDPj6vK1QxnHllBRS+m62Zvt+Zo+htkjJbG7ItxOyI7WI
Pam9df+dKE6cA2jooX+93lQCRv1FWg4f/irFL/MXxTA0gceSXZRfkS57rH16d1rH
2bvs48uCjHuvvQFRPq5I5r24ZTD98bomPqQNosPfWYoS9ruIOCDmzOTAboiiu5tu
63r0Zo7gjYJu5OOqSSYCITWFVxsCAwEAAaOCAm8wggJrMA4GA1UdDwEB/wQEAwIF
oDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAd
BgNVHQ4EFgQUHpA/3AAoHpsSsSfDoQpzi1dKVn4wHwYDVR0jBBgwFoAUFC6zF7dY
VsuuUAlA5h+vnYsUwsYwVQYIKwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVodHRw
Oi8vcjMuby5sZW5jci5vcmcwIgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5pLmxlbmNy
Lm9yZy8weQYDVR0RBHIwcIISY2x1c3RlcnJlc2VhcmNoLmNvgh5jbHVzdGVycmVz
ZWFyY2gubGF2ZW5pcmFwcHMuY2+CFnd3dy5jbHVzdGVycmVzZWFyY2guY2+CInd3
dy5jbHVzdGVycmVzZWFyY2gubGF2ZW5pcmFwcHMuY28wEwYDVR0gBAwwCjAIBgZn
gQwBAgEwggEDBgorBgEEAdZ5AgQCBIH0BIHxAO8AdgA7U3d1Pi25gE6LMFsG/kA7
Z9hPw/THvQANLXJv4frUFwAAAY5C2hFaAAAEAwBHMEUCIH9gV4E59DhAirD7RUxF
wIQNEYtioQYrYJ8C1FLz9bwVAiEAhj1Wn3m8UL85mt1H6MkYrDrXXHdA547vG9ZL
CdAJ0LYAdQB2/4g/Crb7lVHCYcz1h7o0tKTNuyncaEIKn+ZnTFo6dAAAAY5C2hGf
AAAEAwBGMEQCICngIJTIbUHCnheC383iaErVUBBYaL2j5jT8I8yvUxUEAiAebuyf
rUhnPuQ3ew833vWjgooiZIt/g28zjB7Rf5KhjTANBgkqhkiG9w0BAQsFAAOCAQEA
KH1O2lByYx/88UnxFY7XjgAfnpU0+bXxWtJ8S3pR/2YXNq6VcfAPRJ2KmtSD/7S2
Q0IQFbB1VbqmiruYEv2SSLqK1OTP04hWS+HYdlf3uxb+5cPjqXaUyBX6vkdHjxhf
i1/MRttBa1NK4XQjkbSdE2wjDcJ245W4a1DHGW1DJ1OWreb8b9NSocOI5/xvGomD
yrIa3a/aOavUGdq8Cork+m7tcA+fdb7JyMpOZVyOUQgBR72GscAZxvx+cUqpa+uh
pYuJh2oQI7H+mA406xNoUQpW0jkoNK+hPv1t0HrFJkzDGWyz39LP8NJDFkOporBT
rik6rcxtj8IiHUkYnmmVKA==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqWjT7PiOoSreVFnX36yu
lCG4TZiBk4ogE9Nk8d3LDyD7doL7Ic8A3DHjF9BF+KKNOQVgqJxfpMhnZsAY40j5
r4R5CAnYt0fbFoaSt1ABNSApJxgSvyTONRbb279s/I4u+SXiF7eJ8kEWM0YM+Pq8
rVDGceWUFFL6brZm+35mj6G2SMlsbsi3E7IjtYg9qb11/50oTpwDaOihf73eVAJG
/UVaDh/+KsUv8xfFMDSBx5JdlF+RLnusfXp3WsfZu+zjy4KMe6+9AVE+rkjmvbhl
MP3xuiY+pA2iw99ZihL2u4g4IObM5MBuiKK7m27revRmjuCNgm7k46pJJgIhNYVX
GwIDAQAB
-----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 292553852318957234265982638395293467458070
 . . . . . . . . [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 2024-03-15 15:02:51 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-13 15:02:50 +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 21385966071131631826025452149426859185344092002532055413060639086122198696440999973802225034134235416960280572742953478810356777530444055403299870765253313056160258521310232410521466112104087328928411137714485641644998042932181144635181999166313579676632056822264939307409531398484642803425352862462403458996599526996706945472172386822125689903311468017009670078463425748674379401304477486608101728877647024495315061198305505347550310323676117583503409867430624924210378628570122644352464875925933523613562340734333230191370065282222850166738188952521079565960094002469332366242433116686302183276275076436713057638171
 . . . . . . . . . . . . . . . . . . . . [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)
							1e903fdc00281e9b12b127c3a10a738b574a567e
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018e42da115a000004030047304502207f60578139f438408ab0fb454c45c0840d118b62a1062b609f02d452f3f5bc15022100863d569f79bc50bf399add47e8c918ac3ad75c7740e78eef1bd64b09d009d0b600750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018e42da119f0000040300463044022029e02094c86d41c29e1782dfcde2684ad550105868bda3e634fc23ccaf53150402201e6eec9fad48673ee4377b0f37def5a3828a22648b7f836f338c1ed17f92a18d
 . . . . [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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