christkeystone.org

Issued by R3

About this certificate

This digital certificate with serial number 04:10:0c:02:12:4d:06:f9:14:74:89:11:48:e0:f4:2e:6c:fc was issued on by Let's Encrypt.

With 17 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=christkeystone.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:10:0c:02:12:4d:06:f9:14:74:89:11:48:e0:f4:2e:6c:fc
Serial Number (int): 353909623089505237470553156939117239364860
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 66:0a:ef:c7:fb:79:05:07:5f:2b:87:ef:8a:74:e8:68:b9:ae:89:36
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 0a:16:19:56:f1:73:cb:c9:e8:41:ff:8c:bf:c1:1c:0b:f5:0f:4b:c2
Fingerprint (sha256): b4:82:83:3e:83:3e:c4:25:82:a3:97:ac:9c:20:49:7e:85:ea:2d:33:34:67:fb:8f:c8:03:40:26:bc:39:d1:b0

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

Revocation information

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

Check the revocation status for certificate christkeystone.org

17

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for christkeystone.org

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

4hemp.com
brandexia.com
christkeystone.org
cosmeticstailor.com
domainarbitrageurs.com
fabrao.com
faridabaddental.in
freeofdrug.com
harrybrown.org
lostpal.com.cuorealato.com
motorcycleduiinsurance.com
resumebuilder.tv.residence4vip.com
trailerservices.com
vapersmoker.com.quependejo.com
villagecreek.co
wpblogwala.com
www.netzeroeconomy.com

Other certificates including the domain name christkeystone.org

(limited to 100 certificates)

Certificate

The complete raw certificate details for christkeystone.org in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9Xz9h8NlIMfwr58JkbR0
STzs7WE0vr8ND1JVS6KESefjnesJrhAuuPonTpxFNUPmcZexab7vlIgfh367FIbw
IoPTRDZ6JINNzkCM4jg0zUxlFkiwRnYV5PnHmrZzGDcIrwWykLglZ8rsU8ejzFbq
4FQgiYVDxJGeV2qIAdqMVuPQS6FZcQJt+T0/ph2M+hZM+7LkH5U4AqcGOH7BpZbQ
69CCnUgDiwNJmmJbdiRWH0trB68On62xtxvPvLzAUS3ulNUshReCl6npiHuSKsDT
YLnae3G8K8BoO6g+P6tb49ynTGBhJFlpTZTHf5CnADmsWoXEKR+dz6z85wORXqiH
3QIDAQAB
-----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 353909623089505237470553156939117239364860
 . . . . . . . . [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 2023-07-30 07:59:20 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-10-28 07:59:19 +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 'christkeystone.org'
 . . . . . . . . [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 30990019756835707580417340022088918125151931054986723143188601613370001773184235287708690361716269983944754843809942174784848252705002986560424903028113470601639065432298333021359940066762072574739268546970260952071656881088949953111334578111831000874354631879384957786145521905687475700375739842233478926581646098885894707003387529193219510085941351849798380772653754445869796744448066129388266790989244670718736577793997224607443543731462540710277608695147274115908344911799855973311075474255273673848298335050944841252207651786826579400371665019956971674701080503391794673230545744741912110689774597518153054980061
 . . . . . . . . . . . . . . . . . . . . [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)
							660aefc7fb7905075f2b87ef8a74e868b9ae8936
 . . . . . . . . . . . . . . . . [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 (361 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '4hemp.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'brandexia.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'christkeystone.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cosmeticstailor.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'domainarbitrageurs.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'fabrao.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'faridabaddental.in'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'freeofdrug.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'harrybrown.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'lostpal.com.cuorealato.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'motorcycleduiinsurance.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'resumebuilder.tv.residence4vip.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'trailerservices.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'vapersmoker.com.quependejo.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'villagecreek.co'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'wpblogwala.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.netzeroeconomy.com'
 . . . . . . . . . . . . . . . . [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)
							00ef007500b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000189a606093e0000040300463044022022f563d6dc80a48da209f9845f59a069cb5f08c0907b3e5a074d7b500bda979702207e127d5a4e4b3943db6ac5af57ea9f8d5e990cec296adbf8ddf503b21bd5a698007600adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a00000189a606097c0000040300473045022100cbcd2f93fb602f98ffdc63f9adf3ef3e2d18fceea06a3e7c4c1cb3287bbcbcf902202f541b7f3a7a68ca02d972912e2759234954b351a9f126bf060a57a387e02a2b
 . . . . [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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