www.dduco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:42:80:c2:1b:b4:14:78:d6:c6:13:fa:3c:f1:40:a6:b8:7d 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): 04:42:80:c2:1b:b4:14:78:d6:c6:13:fa:3c:f1:40:a6:b8:7d
Serial Number (int): 371078928994766414500067729381656594135165
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 5c:cd:93:41:84:cb:66:a6:28:8f:1d:63:88:91:66:c2:bf:9e:1f:5d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 57:fa:f4:b4:5d:ff:f0:a4:b2:b7:41:f1:34:6c:52:a6:8e:93:65:27
Fingerprint (sha256): a6:a4:a6:c3:56:54:2e:72:db:8a:23:e8:80:cb:fa:95:cb:2f:c6:15:2b:a0:33:8e:f7:f4:a3:09:f0:d5:1d:f4

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 371078928994766414500067729381656594135165
 . . . . . . . . [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 2020-01-01 17:48:15 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-31 17:48:15 +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 782359041516926284349014283780066302417177368265210209329224041174874446275893561883755690461576664552515358890493171356313826429348924516977552099084342255173938172448529058239748956408403035452312301659138450719172717459169505608078679187049173800325896661681151813458666074800614418177294166861951452697568922102656061875677187366884642162038898058785029302526079732419380429222358293302558349545823640117116500924870565392401508780321709027407965926007173837791096303091104834146494127704857444999301534473252446337363710898758066727494161770764242717280045635758751153581255696141509351882446759778158803393673629739299619711975891568634565121138307856500204190633255010194764112260048977453697265681916726333045267366564236804788477707977264461611631437112905459713717833791562693568750596007199618383234258771571302408635141766403549341051906300807631374559265917673189495953667368099525537297909364880901214306433661901356156460312034810737764020539389626506400921400576628934712421027567345596931235884623602280243695915861856884920108442010718544048700240469355976412414954785270934655487887333398615649504152691565243716561608435523234656204989954014917440634452987094222771076596992144461770012308451345870982537972013191
 . . . . . . . . . . . . . . . . . . . . [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)
							5ccd934184cb66a6288f1d63889166c2bf9e1f5d
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016f626fda1f0000040300473045022023b06fc30d93e6c46762266d6709762cc69a2f681e92828fbb20ae39697ee6c9022100d00f729d7d43a59eacb2c94a9680f70ed0c2652d184b1f1f6d4986f6b37a675c007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016f626fda0f0000040300483046022100f6bb946d07a2b4deeb01f66bf7ca4c50bc3ca5e69e97ef743f76f95e8f7e588c022100a479d09cc15cde5ba52fd809fa1b6e75332bfd09d91cc94bcc398d0cdab3878f
 . . . . [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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