www.dujco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:5b:60:9c:98:ad:24:42:a0:4b:6d:0e:23:53:f1:c0:9a:9c 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.dujco.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:5b:60:9c:98:ad:24:42:a0:4b:6d:0e:23:53:f1:c0:9a:9c
Serial Number (int): 292430972167635377348396903172682790509212
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 15:dd:85:66:16:44:c8:95:55:8b:41:92:3a:4b:be:f4:6d:a4:b7:71
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 1a:c9:67:f9:81:ed:96:5b:29:24:e5:dd:b6:fe:65:c7:38:66:5f:4d
Fingerprint (sha256): fa:de:76:f3:f7:f6:43:9f:a0:35:ca:cb:d9:06:3c:f3:e4:82:2e:8d:c1:39:3a:8c:e1:60:0c:b8:ad:09:4c:09

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.dujco.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.dujco.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.dujco.com

Other certificates including the domain name dujco.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.dujco.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 292430972167635377348396903172682790509212
 . . . . . . . . [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 10:32:07 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-11 10:32:07 +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.dujco.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 988131567687739108849926441241174746203047747292436100383253692098520323059218327409674877330683983404492127647622381523858447272288975428454415466771479466690038746879687406730589348335172784002939034610586133648624553709692314019142470008523574519190983145342877841515542150779875557467323448000607169997914266141282027577721326628489489137296627217049680868662571930632428931543934552633487430957622734880157598830981615252218145441880951178631206778286587188950333432269146100082450828537184564218742610348822000852101103583614050337086102762089490961835736474273341363013372470557828349009397408827937022565020590523690344404912254585745209453909912135965229667188686579306718957914574573554187055612260837238600437499692671240100510537751758081610008565946361957283246255282846344599377267105361559913130449436507153591844746139422738563763853494500420719938720840492152973717548970690442040550122180372680182879248341769551879458219343379507321006005634697760638722436830368664033013644548202958490117641950992247579912022128145690487433681639576785763930113772235238649098619340519657042178739945191085107528373046970702272951058680983381869167781361954015697124310079796944426800039378731510978391638602875390808312970524521
 . . . . . . . . . . . . . . . . . . . . [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)
							15dd85661644c895558b41923a4bbef46da4b771
 . . . . . . . . . . . . . . . . [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.dujco.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)
							00f10077005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016dc4e3cfb10000040300483046022100b1c92e46b44e41935ea51f44e99f41c728a1f2dd068c6e2e5c2f37a527705a1c022100b55093f3400443c0f16f5413a17fb70da87ea4a8f42ade4894f35396fcc1ee37007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016dc4e3cfab000004030047304502210097c92ba4fe12412c390f5344504ae5b2ff363a1dcc12b2bb3687fbfda7ae95860220541fdef9ca0a6ee69396f1905555f1cd41b5dad82f1ef5ed7ce1e0e69f84378a
 . . . . [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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