cotreat.ai

Issued by R3

About this certificate

This digital certificate with serial number 04:bb:55:d0:76:a4:bc:c0:f5:91:f6:83:ef:34:98:52:1b:74 was issued on by Let's Encrypt.

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=cotreat.ai

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:bb:55:d0:76:a4:bc:c0:f5:91:f6:83:ef:34:98:52:1b:74
Serial Number (int): 412196013125020940686002777314185687735156
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: ba:37:44:b1:b3:ea:56:51:e5:fd:a6:08:52:33:ce:80:fa:ac:9a:23
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 09:0b:0f:86:14:56:fe:d3:4e:95:14:07:e9:d5:13:2e:5c:bd:fd:c8
Fingerprint (sha256): 92:17:ff:f7:3e:53:bb:5b:17:eb:bc:46:6b:4f:e4:eb:e8:7d:c1:1c:17:bf:90:12:a4:31:61:e0:92:a6:ee:5f

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

Revocation information

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

Check the revocation status for certificate cotreat.ai

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for cotreat.ai

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

cotreat.ai

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Certificate

The complete raw certificate details for cotreat.ai in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwtAl7OKMRVhwODc116qw
BILUObeiUxYqOJSFJdqLDcnfmxL+9NUMe8AY0KvAVXH1S5EzPUxoZrEQz24Hsf37
ERbxLeS5IL5nFDhoH2tF9PwXtwbX4m34q4qcYW3xxTaom3UJwqrGU5lqDnrl4ciY
fBGvZbOXNKsh6JY2VwFSvNNrRjhPqkSxJUmvhKpUFv6efPCDL22HfYJWvbG2udYg
2QKsnQ5em/7e45H+s9OB0/y8HJXsDNcj7KVo/a8c54a//kysC2bkQFu56y1jRyju
8UEOqL9KwMm+D7k0f77Otr21h+6t16CZ+YnLyvfRalTOYOWCQzlSByZ4BSYbcNpa
WwIDAQAB
-----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 412196013125020940686002777314185687735156
 . . . . . . . . [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 2024-01-24 09:14:16 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-23 09:14:15 +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 'cotreat.ai'
 . . . . . . . . [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 24592872839630587956757697746526429887345976951879658787490192715695094459918957587380041117785229246718618559683855605039479300765015286163045275173725263399883983960768497583700179374053237820561290778716857374666907553258868475517937689584367188656198120934003366318991496614597806462400217061869050245247101719992942690858473005314226437640996402264604687452964992092726620053351294792961283507543305816679237555044331508867496485729111650068267419539638760481939294976637478561366725568039239972214317209125205367104676998576257614638952405560765477956254081008961372643987164152371020574052187895223411352951387
 . . . . . . . . . . . . . . . . . . . . [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)
							ba3744b1b3ea5651e5fda6085233ce80faac9a23
 . . . . . . . . . . . . . . . . [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 (14 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cotreat.ai'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018d3af69c130000040300473045022100bdc7257bd8bd921386efcd5ed04c08f6788bb86ff1d754e404fb94b78e54645402202279038699b4f4e12b95c76cc9c6234505fce431577083cc3aecdbf08b66a4e00077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d3af69dbf0000040300483046022100a2d66003a395413944beefefccc14a29cee037d8fe5a9a0771f4abf3b59ca0540221009b828682ada2d55ebb716c1b2dc1dd5f21ad8b0a9df5328868e3b56a29c6cad5
 . . . . [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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