www.duzco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:94:15:67:bf:93:73:b6:29:90:81:d9:91:dd:3f:fa:04:35 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.duzco.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:94:15:67:bf:93:73:b6:29:90:81:d9:91:dd:3f:fa:04:35
Serial Number (int): 398839386511450376683629005259359158666293
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: b9:6f:17:25:03:59:1b:cf:0f:59:35:05:b8:ff:f9:40:69:5f:6f:1a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 3a:6e:ed:3e:23:0a:b0:de:7b:e9:dd:8a:9a:b6:61:31:bc:a3:fa:fb
Fingerprint (sha256): 25:44:53:ed:4d:f9:e0:01:4a:90:f0:9d:07:36:5b:cd:04:0d:ec:c6:ea:7c:51:97:00:cf:97:41:4d:f4:b0:ec

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.duzco.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.duzco.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.duzco.com

Other certificates including the domain name duzco.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.duzco.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 398839386511450376683629005259359158666293
 . . . . . . . . [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 2020-02-23 23:41:18 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-23 23:41:18 +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.duzco.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 781005606938657678040282730331116141508383363292544680529167161539845955405451601577844013758743009244131999667380429416973496753746687425328667160186788291148194590172956733222668850041335594393855944108708231583811433172371587664377923462432336824507384287999775938228050720445787301425441848944741547865658328858983340906558034194512509090349783679727165496871288939909302850326767087957216810968729107812300043349833973775725160810493567127288703868642227343097919218580953118854256587261831172845967107588382071119829476684952113441936153780466571491989466893336321573848564524997230333776670977328286734029226530192363782407294367385445131134906366487891702255425323925672007323461484123347245356413716658156625055526744261077291985966810157825318127892427804318058060837556741144126551086425368613510371246241397901909114822343356129042297495863478488377791797830990803822468414365531009128729343236461766614327585393946681042782070951543272155223569652039383942466421166206133478388709020874026466211643381258162753680547856639400595025146793023746446554818303403482278347380578995885947380866410947629307162077295035789363841132674461043231688949046556690289630048431282064111527307986136461654383295098576556618172900233627
 . . . . . . . . . . . . . . . . . . . . [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)
							b96f172503591bcf0f593505b8fff940695f6f1a
 . . . . . . . . . . . . . . . . [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.duzco.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000017074a4222e00000403004730450220014e8089d0ce4b01ef3904576a7edb58ffb082675d29827196c177c9a70d621e022100807a47c71906788347e83847b33d26fa0b8f51c688d0031d67304ee8d2ce7e4b00750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000017074a42252000004030046304402202492f9efe1264c978b0a926ad525197a86da414ddd2f7a655a67e8a2d4dc2a76022052f31ed7c8628fead0f2616f8e01bb95fff50daff25bb65b7b6238d0004dd84b
 . . . . [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)
		008d2615ba557dcd0206733fb0946c84d2faec710576e7699ec583abfd019ff1237ae8a618200dee490511c4e1fc7e5dc248914649e24bddd2922253eccf1b92a3115857f48f1162080b5db7c4be98342e15b7b3596282106872b6cb4b16c92344be19cbbf80fbeea9a5e5437c92df54687b247210726e31e57b29f5c5c12c429caac5479cc013c586c2218532b54c1d3a85d46b3f137697ded1148c3933c1360cb15d5ccbab00ea2345386ce3bc930d57daceb50fd206d3c4ec3184de46a65b25d59624f3dbaf305940fd9852e97ae3d8eb231435c3ac7e1b71663383667464766a0acc50d3d86a6683d1b437ad94e0333551e976ba03b4e5a7335087266e956d