www.dujco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:8e:d7:65:76:96:c0:12:65:2d:9d:be:cf:ce:fa:01:54:d1 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): 03:8e:d7:65:76:96:c0:12:65:2d:9d:be:cf:ce:fa:01:54:d1
Serial Number (int): 309943264744398471650323389846474635433169
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 66:65:ca:e0:88:27:33:e2:51:1d:64:ed:65:c1:6c:8b:e7:07:48:62
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 64:86:5c:36:2b:b0:36:3d:d0:97:3d:fd:12:6d:3a:be:90:ba:d4:5a
Fingerprint (sha256): 77:c7:68:b3:c7:f2:74:a6:a9:7c:46:ab:1a:47:63:65:e9:dc:4f:0b:27:58:ee:59:86:9f:6d:cd:03:94:b3:70

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-----
MIIGUjCCBTqgAwIBAgISA47XZXaWwBJlLZ2+z876AVTRMA0GCSqGSIb3DQEBCwUA
MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD
ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEyMzExNDAyMTFaFw0y
MDAzMzAxNDAyMTFaMBgxFjAUBgNVBAMTDXd3dy5kdWpjby5jb20wggIiMA0GCSqG
SIb3DQEBAQUAA4ICDwAwggIKAoICAQC75hFeN+CK68LPMIZLnw2jipmuooRZf447
zCOHKXluZd3JwroFDf9OJFQ8rjCzfSsxlvQtqxsWc9tdgMc8Z6JO34jUr+N8eWkV
bsCr9JxpLiYAlxgsfCOaKr/dH5h5lZJelqbw4U2ARGJjLeHRO4ABHJ0WnnaD1vKM
1qnFM8ZXIlCLXyFY9vg8Afvi6XIZ0lYqhmc/Dy7R82ik8OjseO/1f4KXGtBXyjgV
aNMuV2VJrQheOYkGvgo/tyGQpUe19tWyyysydrp+8r6Uk5tfZlcbr1T590WbU1w/
ULg+vHAGhBHwBPixN4npkzUzmem8g4XrdL9/QQPRftqOwLqH0+BcQX8HuXs06uDk
Lj1qLai13g472Naza1upVHsx811SaBkDDb1CLM8zSP8cKLqQdfSJtYBS0jkDt/e2
0EzfWZwFme32U0pR81xYFxOGPNkxrdxTltqyIIUKq2BButhsDY7dFoRlxbAvu7WV
Mel3/xkBufbaUC0doPci7y7a9n1D/0we0mVVUTiv5HMilPKZDwgnAFAscR65Mn2I
+vZ8ftJv9nwc684qDXU8vyVDAeEEsNkVpksRHy/VvHe2oMhaFks2iJa+1KTYE9OE
F5e+TL0+QJ0toqCTPjnIy1ma0sgbQFnYZtO55ZH9QOIZ35p3MEw3zbYAwvrR8L84
z/2pqZpyWwIDAQABo4ICYjCCAl4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG
CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBRmZcrg
iCcz4lEdZO1lwWyL5wdIYjAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js
oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14
My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14
My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5kdWpjby5jb20wTAYD
VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa
aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQCBIH1BIHy
APAAdwBvU3asMfAxGdiZAKRRFf93FRwR2QLBACkGjbIImjfZEwAAAW9ceobZAAAE
AwBIMEYCIQCrnbbmWiXWe9COijo/Nf0dP4xSaqy6fnhn8x0g7XbpCAIhAJFYlQLK
eKCyFJZhjSr6T1mPd5MZLl5v0bBTRIdy4GLWAHUAB7dcG+V9aP/xsMYdIxXHuuZX
fFeUt2ruvGE6GmnTohwAAAFvXHqG2QAABAMARjBEAiBS9BHFUEiElAk3eQ4GDVXM
Va/5KTJ5PqX1R0+wGXGhXwIgGJrebMMgMfU9l/cd9tQHoMRg1AGsnyxn+6ZTNX7G
1yIwDQYJKoZIhvcNAQELBQADggEBADnH43NJ6fuzMMUQgvIF7ezx6wnT39AgCWlU
sn0Ws1nwaaIlWjIhOpFBQbQfxJn08FISLvecmIIu7axn/648mwwj8sWdt+Z74s1f
cBximFSn7gTZOPFG1SDmetVMqGdYikyop45rqnHpo8/EoYH7Wf24VhRNpfUWW7au
XzNjCFzez6aVUlwwIJ5PZvalYIN2yeBAFn7bAxDe+oZbRvFjEsatfhSDm7f8T11b
72OCOZy7xbb9wmQ7zmaGb+z8L7jPZXcHDpbBNkJjaFFn4038RC39sWlqLSXrM4bk
/SevwRLmZmdfAqvah2fs0qKqrRZVnZ1PTXSqtNyd9yZnA2y4JRc=
-----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 309943264744398471650323389846474635433169
 . . . . . . . . [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 2019-12-31 14:02:11 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-30 14:02:11 +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 766559827105061326322241037464315568773749116216189800546893822590426334706008161998858170224151980771980274216087917524943468479068458610905355934917947828353753305440536071577616529179048254287181256382466606770915174543167288702673487170854029028083514934836103235556843082969386855382950800498837077814379455514594084026652216403321390082362831531947792671289224911231407202401884318366160640385473836548638428469893416696235726825763095006610935175157620896113611033916790876546555794866262030508407313542803468047892556175327142208595113618293258475480575251607595619922193675030837326276567899949868661046964846016784532559582884386935223608555198352366319966411391558608068835181052129199556067661156715379786755388075647557212307559246381526686546809147215349168470230824122983811807708659283775659260211200865691856260809353685162606059695171471892833568446676594149748561518748235312584490473549135924708748539209618814779360417151199774403256194637678999255502799362256102038832241363313327419449596623205430013782438597256373689741223694950552343413684156038216557669470636016107319455418094688953159997593307124750511018888168695078429170393634324714186932883651446551352259577029851942246601836311473196215288884523611
 . . . . . . . . . . . . . . . . . . . . [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)
							6665cae0882733e2511d64ed65c16c8be7074862
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016f5c7a86d90000040300483046022100ab9db6e65a25d67bd08e8a3a3f35fd1d3f8c526aacba7e7867f31d20ed76e90802210091589502ca78a0b21496618d2afa4f598f7793192e5e6fd1b053448772e062d600750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f5c7a86d90000040300463044022052f411c5504884940937790e060d55cc55aff92932793ea5f5474fb01971a15f0220189ade6cc32031f53d97f71df6d407a0c460d401ac9f2c67fba653357ec6d722
 . . . . [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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