www.dfuco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:85:1a:04:4b:7f:25:a8:96:07:f0:2c:93:4e:a3:cb:db:75 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.dfuco.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:85:1a:04:4b:7f:25:a8:96:07:f0:2c:93:4e:a3:cb:db:75
Serial Number (int): 306628994824097749199095878105640651709301
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 5e:5d:cb:9a:71:98:41:94:12:42:c2:de:ba:ad:35:02:f1:a1:23:01
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): e1:b8:17:dd:18:55:2f:ee:3f:6e:5d:8a:50:f5:fb:14:5b:ff:1a:b4
Fingerprint (sha256): a0:39:43:85:c0:a1:bd:cd:9a:be:fc:95:20:1a:63:0e:05:55:79:e6:28:f6:2f:51:78:4b:62:54:6a:81:93:16

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.dfuco.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.dfuco.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.dfuco.com

Other certificates including the domain name dfuco.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.dfuco.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 306628994824097749199095878105640651709301
 . . . . . . . . [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 17:48:39 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-31 17:48:39 +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.dfuco.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 947708562215426932478710613425768706984317790622575377068867301113119213144280937674752141767538506230756496753160038891626444914290594833751205158013502037565894453869488900194552263397643829083385658899748120147145540088607076014123755220799740768441081098251695734224610738432511468354341137803711360046718007835159124652460922115016888844121552079866284037286995580777970212034375907263783156501041176323319386862459815649330610929223913374295029785931196384128273685278795113557882872164331142345539293474134582285481191356448502831201614919526433448954076835366846671108747070793094885786439085854766661886098739783882472926640878876080164978089096032480869804806118440297005205847806654427700291157802126144150512372963303986179575488882296663657186469485067648399889241864587725084155283070274174097219816397110455395988382915110211264372514507332220719527581016847833224256325325134384322943968870440461843937329815508649816050417716330538502050122746868367570755197650232468892221800896679812021407386689250499887288286764538466541137151374082120008304767880274390596708890373335732451254231398060548876671587447123278257261589204676197469182921774144346282406229637979535957697270058137907740110600489001998066493317105587
 . . . . . . . . . . . . . . . . . . . . [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)
							5e5dcb9a719841941242c2debaad3502f1a12301
 . . . . . . . . . . . . . . . . [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.dfuco.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)
							00f00076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016f627039c7000004030047304502200e7f8b9645d32f8fb4b66316e71468af73c1d03c2978f5ed5558f002ae0daf0f0221009b55dae2be9f2cbd13dc9761a33dd690f3dc60600c9c2eec40c56c8b754c5f5000760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f627039f60000040300473045022100c7dc82ef241ec1d4311d3f3c8cc079a07b5cc16e58a44711701de7c195f701c702201a565f38074f1e2b41f9dd61abeab90297b3df82f357db950513eb7cc2550dbd
 . . . . [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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