cotreat.ai

Issued by R3

About this certificate

This digital certificate with serial number 03:77:69:5a:49:3c:be:31:8d:1c:b0:07:81:67:26:37:b9:d6 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): 03:77:69:5a:49:3c:be:31:8d:1c:b0:07:81:67:26:37:b9:d6
Serial Number (int): 301970497190575554266196629329466097121750
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f2:9b:20:f1:aa:36:10:2b:d6:50:0a:fa:01:24:1f:62:9d:2f:f0:c7
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 95:4e:61:f7:a6:df:80:14:46:e4:9d:1e:21:6a:37:66:d0:d3:59:df
Fingerprint (sha256): d2:5e:cf:65:0a:f0:5e:43:a6:b3:61:35:f6:5e:9e:12:ac:dd:51:a8:3e:58:fa:44:d6:3e:a9:88:9a:8e:25:38

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwt4upumjspbMGldMn7Jd
kbxZIaVl+1LPil84pce3vb6KvDBk8ivuBnbS2uaUcEdVQIQ4cgV77N+RyutHDwhx
9M0QDSvG2Bg4GaMMI5LUjviDkzkdirWcnlcJF+bU+QVksnoohr+g+o3eoLeumjFA
SL39wwXpNJYX/sMAvMholeks3H1HqLtkOuEZQ2aBXdTPiwdkgTo+OWC3PRovVQxy
tOEjYj6AyfGFx8CDd8RgE+ZgFqICek7LK+D7UByQp6bldKtTwJcOvDM1R208AA24
saf8SZs+TtEJPW/2yIeurcBSWgdd1Q9kh3J0Bhzfhntfdcg1CV7HaxGYXj1fCpET
QQIDAQAB
-----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 301970497190575554266196629329466097121750
 . . . . . . . . [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 2023-11-07 07:21:54 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-05 07:21:53 +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 24599793306627605046612494942331304447359932042855562883305016274568793425655552433916058750224072636208899978085341955005738455059528486037065955435908950781978304468220584327634758338628587140110717729332922434504125045282988548909236556367654725757434776214542185232846573018146510603626098567504698238433871993524049917974591798989313419001524666200495660396696723887817510024064749924744857157023720920690951298635490759531015026395397893769402632780465870146311777786120670607465586988946552028115698051115901740138796315289836359351638097246926295899291302910744778373538676531443719557649566061335259368198977
 . . . . . . . . . . . . . . . . . . . . [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)
							f29b20f1aa36102bd6500afa01241f629d2ff0c7
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018ba8dfb11c0000040300473045022100dad5094e360d6954927695fb018a913ddca874b4ce113481ebd91f6b167d76c102205b6f11abc1c8a2f14bb689d61b1932a058eeb4a95d626f6ec334fc7ecfab9bd400760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018ba8dfb218000004030047304502202b3ee3be499aacc1df16f92163b071aa9a3c5d24242e2b1783bb0aa79d90de55022100ad0443049d12e4f62691d10f5d5aaa5e62756647665c9c7ca6eabf6d4bd93db3
 . . . . [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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