www.duzco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:a4:2c:3e:56:80:85:d5:56:a6:68:ea:cd:fa:71:e5:f1:bc 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:a4:2c:3e:56:80:85:d5:56:a6:68:ea:cd:fa:71:e5:f1:bc
Serial Number (int): 404314261610764510184778315636382531711420
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 15:4c:de:c0:18:51:bc:10:df:dc:d2:43:c2:a7:d4:3c:74:c2:ec:f0
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 06:d5:81:26:8a:54:32:5b:c4:3e:8e:2b:b4:06:ee:13:90:12:d9:62
Fingerprint (sha256): f4:68:eb:81:23:21:9f:ee:ad:90:ca:00:df:bc:7a:1c:f7:86:84:5f:74:d8:42:70:3e:b0:ef:80:c6:40:2a:5d

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 404314261610764510184778315636382531711420
 . . . . . . . . [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 2019-12-17 00:37:16 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-16 00:37:16 +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 885312199627288577744336594637436359854001882348554971036421586533255298147797359181658464066319663964716949048638962084417387389301171414900130355807502192374015368375113017376529774037837056611515917305912032597307140864676249263372209700431351464477831056308395689111526032139255027698615748063467741241389952497265403438987371869393242904526497639746809958467850030826926715668250744476528072497034689952823074660991552175669088467251585627162565722420585161766572496579219151353094798576890952320902771012203043553171018685587488756654089147975981354878780759080949068613018935100844954207655004317857157165773827428494281904326580241313303525649582966601094935958561637264297534710497364365392206375717735919029791377708528841677510034029812533594152840958300300862314392131026683049986471959909828990253875347537172043393861107194779626446962840988503759288577981333382213379015187885911599123263833397567410324290795752838999395457175955074781082053249065794359522422748097641929318980011209323755865118280274409870508774452194754090300304261983142437743228347188445000427442068616888784791381322853795916965989098874144219887354484274800449706604966242125369515900725428341469160846367416329232856351948548023627514723250969
 . . . . . . . . . . . . . . . . . . . . [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)
							154cdec01851bc10dfdcd243c2a7d43c74c2ecf0
 . . . . . . . . . . . . . . . . [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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016f118094f40000040300483046022100b7f7a7f2f509ab9d8c37e0cd72dd3b2cc8979b94331cbecdac49deb10cad2437022100d579e96f508d996cf0c994cd18cdebaa805d6a7098c1cd78b743dafcefdec5d50077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016f118095280000040300483046022100d3c8da69f3a40e840e3b7dd4fde06c9bdc219bb01f7a4fae32adc05ea5bad24c0221009864656db851be38d06f303f94c693fa3a1230e0ad94105c3fda4ae6ff506158
 . . . . [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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