www.dfnco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:55:60:d1:b6:98:d7:ca:de:39:05:97:31:19:dd:ca:52:2b 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=www.dfnco.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:55:60:d1:b6:98:d7:ca:de:39:05:97:31:19:dd:ca:52:2b
Serial Number (int): 377501839696467554779972142264779719463467
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 4c:41:14:d6:b0:f9:3c:fe:48:5a:33:f4:81:44:1a:1e:43:01:8e:37
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 2d:93:3d:ab:24:82:30:62:dc:f2:84:1d:15:87:05:88:26:e8:7e:ad
Fingerprint (sha256): 3e:d7:ff:21:45:b7:5b:42:ec:5e:88:7c:df:cb:54:c2:7f:05:a4:2b:e1:53:1f:28:93:37:f6:1c:25:ba:bf:d9

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.dfnco.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.dfnco.com

Public Key Algorithm

RSA

Key Size

4096

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

www.dfnco.com

Other certificates including the domain name dfnco.com

(limited to 100 certificates)

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 377501839696467554779972142264779719463467
 . . . . . . . . [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 2019-10-13 08:45:25 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-11 08:45:25 +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.dfnco.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 911879590954088468245409617733835013363559980391951754014746775581147561061095782279713550960472305581507016247591553126622424257820684085499409098742982206009144886906581995869638367326206994787884178998602137343908300024599448615307257320572694778293992115376885538922055394487916323248447878092836517284012044884793157451675021101091729797432426176556517199097178758638579639595372386559733042880593060925665881197959661411917969803435608259052413640094641100195036801519183954609443625998459052508426241554400275361872064611588666361726484809452574871816327372585069424696250314868163285239464733673004086574529052436356254261380339816656010096934016596219405046830797507976100606912780493226369278385375092404731633757200239812286280968148643982969828320734469193677045779041901853265240638146554182720635789406955134954539771828539014529472745527274656868786840392286700466796829303864348896168170594061094976683325637092765503905035022807851075389090867187886477439954920297940735867702806832491617390819461977321644366650724970245766041795640502169050362549655057543306036702842746000340492150145705789106512230915685868045885554940496261584889893319931749093633074725240497978404702663650612500723509239528015952240604270881
 . . . . . . . . . . . . . . . . . . . . [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)
							4c4114d6b0f93cfe485a33f481441a1e43018e37
 . . . . . . . . . . . . . . . . [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 (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.dfnco.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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f20077005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016dc48220de0000040300483046022100ffc8f1d4a713c9d9be0548a6390c564a7472a7ef24d4eb587be4484f3ff6b952022100f361a86846680d123482570be6ac38663edc4b33a68e4add9a27f99c19b98098007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016dc48220dc0000040300483046022100a74b24280f0caba489ee506eb76f44fb62c1dc05afde0fdc86024f09f622ed3c022100ad0bf7ba237360158af2fa6abb530926b749ffeb75b1d4b952292accf7f80aed
 . . . . [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)
		004ee03d311c371f20f5ceb86f6aac81bbe0fa014288d596140be7d85c17a6be34d23abd496bf8591a5e5723549b10a5947504c51c93758dd02152eea0fc98f46916b3329f7c9e915199e54c683eef5060d29e15f32c1a15d0321d54a5ca28300b88483fe1a66ed1a8dd7c5e83047ce6f0cb96e2c45f5d4d6372f6e53d8d97c4df060d2581a278b5d36c600739801dab3d2161ac12184ab8dffffa53acdc7d7caebacf471b3eab028c10987533e21fe88ee3db40a96c8927d44c5684ae9b3f798aebf21ff4446583b5e695a869c9ddb6c5dc64fd63e74b4c5d6a75378ef649df5846a3ada746e0a021c26329d8cdf647c1a8aeac17a87d5397238d788ea21f9bb9