www.dduco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:3f:af:a2:b6:9b:19:23:0a:aa:1b:c3:f0:64:c7:5a:c6:20 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.dduco.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:3f:af:a2:b6:9b:19:23:0a:aa:1b:c3:f0:64:c7:5a:c6:20
Serial Number (int): 283008106666339998600224108604094248830496
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 42:34:84:87:18:40:76:da:76:b4:2a:8a:c4:db:ad:2e:a7:65:6d:d1
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): ac:60:41:48:23:b5:5c:68:26:e1:5c:95:93:69:52:bb:87:23:ad:98
Fingerprint (sha256): f4:bf:53:29:ee:2d:45:53:fd:89:e9:aa:7a:3f:ac:74:eb:f4:8e:d2:3a:b5:6d:1f:d0:2e:09:46:db:04:0a:28

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.dduco.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.dduco.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.dduco.com

Other certificates including the domain name dduco.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.dduco.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 283008106666339998600224108604094248830496
 . . . . . . . . [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 10:21:25 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-11 10:21:25 +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.dduco.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 911839882861174281505992643249778589900080699035905661968692725822893325022479328443011154344705427370396729198778030171254260553570520734771417262195059391422744972249787237174276502830750109224085089847147462466853578304778912370501750438686981994380229528031756553449851417324286019154545212253286422230718316944122305674757182534613251145684610806659015442260491440423019142175985793896866561668892000528342436742131136030615523652122163652140204424943345234193275818595960348317107969294537757735148748585823325042097683280997880884554547519009963800815350844647779789955334519186596996676542641705716888177872933327210628214108980545155750840817279278391045718113107031860182104189510120937226567013546485048699298598980019594380352446775376742716298034966898466807883497725447198326733591150558795139129474517624305288934940984769715813078152193522405198485829803543489721925867091941336902869714084034705195165644348124338328496344006008843836275175521002196178631339427544243741328018089084885872816468624777623472494633185091659039519252448989245501974118943037928675439892855433529437326472868148649370791690315938421382262753555932748144862416631360481906092610566623700723733340268845134349466129973209430171395826013951
 . . . . . . . . . . . . . . . . . . . . [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)
							42348487184076da76b42a8ac4dbad2ea7656dd1
 . . . . . . . . . . . . . . . . [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.dduco.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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016dc4da05f200000403004630440220194e3f5075d59e46bdd70974a064406bd338d66a5da3cbde7a7edd19fb023d6d02202ce593043011456bb31b5d5cf3a881c20591e9644cd7c5f4f1af305cebfc598b007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016dc4da05ed000004030046304402202e401aaf55868dbe95c9badfd7f0ef1181aec72bf36a156e01120e2f4efea9b202204a39b3d88222c600b83b31298546ff911a267af504218d988f073cc207be4024
 . . . . [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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