www.clickfolks.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:8b:cd:7f:a1:00:32:5c:cb:00:d4:ad:77:15:cb:10:a1:b3 was issued on by Let's Encrypt.

With 10 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=www.clickfolks.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:8b:cd:7f:a1:00:32:5c:cb:00:d4:ad:77:15:cb:10:a1:b3
Serial Number (int): 308909261223611660656576003874413293380019
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f0:ca:b0:c3:7a:36:31:40:cc:40:e1:f7:ca:3b:59:fd:65:f0:75:78
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 8f:e9:46:e7:c7:72:01:72:d6:e7:53:b0:df:6b:d9:a3:d9:f4:6c:fa
Fingerprint (sha256): 5e:ae:81:39:61:be:08:b0:5a:23:c0:9e:58:59:ba:d0:1b:33:67:b3:d4:2a:31:26:ce:23:48:28:43:8c:6c:5e

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate www.clickfolks.com

10

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.clickfolks.com

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

capecoralhomeremodeling.com
clickfolks.com
de-unique.com
madisonhomevalues.com
provoflooring.com
www.capecoralhomeremodeling.com
www.clickfolks.com
www.de-unique.com
www.madisonhomevalues.com
www.provoflooring.com

Other certificates including the domain name clickfolks.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.clickfolks.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApirDd/HM3md5pk7JDVtQ
IM6nNsYeRrWev5FhfqKQO0VtrsecrleofiEVIk0ai6K0qKQMn4oFG+UkRz2lF29i
wHENT+doAY0E4Labxv6GrEWT4K7+z59I5h31i8AvMdAwft1q7fZX0toFDt426zVn
fSC3pJwa/TVXLgZSw9Q05gOiddiBptwjzeRDD/4FcB3+xrwY2tF5ZPAEHqCbYxyf
Tf1i1S04x5GzqNtWqd1pOjGNmxTKXdEIC2w4LUdn10qCf7/RuA72A7pn/J0idgAO
aYhRb8olC8JnZY3LVKYhj0mDpnHbu8moHD/kjCBdoM3ItMu5G2YWkR2S3Dppzttz
BQIDAQAB
-----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 308909261223611660656576003874413293380019
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-10 17:57:14 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-06-08 17:57:14 +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 'www.clickfolks.com'
 . . . . . . . . [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 20976646116298665163905967961885558732946775100156435019665013075892217943895166394775683233434053386052609357839975114528532458762624750658371395445357885298967226007583089163276115253960838295814880344898542640106929023151128075912216230903766060099673650733550973891410386699047407179534676164503931578882817697632195001096556587393287357866328302213640836168359596812553987079207289437363263067775282717827542453398296269955731787859447995083376963649636517167407089928911933868006761300362720082569881980375547158102094376411523834252258191518438829141148547892222152737436532945101997039547388062256930116825861
 . . . . . . . . . . . . . . . . . . . . [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)
							f0cab0c37a363140cc40e1f7ca3b59fd65f07578
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (227 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'capecoralhomeremodeling.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'clickfolks.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'de-unique.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'madisonhomevalues.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'provoflooring.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.capecoralhomeremodeling.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.clickfolks.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.de-unique.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.madisonhomevalues.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.provoflooring.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 (69 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [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)
							00f00076005ea773f9df56c0e7b536487dd049e0327a919a0c84a11212841875968171455800000170c5cedf68000004030047304502207c58192ffe67912d0a943aee1213bd853f2eb86cc0fb7571ef2de75312e57970022100b9fbf1b012c9a56808901ac7adbc130a7e0e778d68dc3adfc4ce42c2164486af00760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c00000170c5cedfaa0000040300473045022040477936afa4a3e140e6a90a048a09d5eb783c919b3419edb9b2dadf09aa7c38022100f5988f24cb6a3b705570fbff72f32767893d8204fc3d6db540d68ffc60dc5f4a
 . . . . [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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