www.dfuco.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:c8:4c:03:91:63:09:75:da:f2:10:f6:de:93:c2:d6:da:5d 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:c8:4c:03:91:63:09:75:da:f2:10:f6:de:93:c2:d6:da:5d
Serial Number (int): 329494371032834570305125090573861629909597
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 72:db:8e:a3:02:3e:45:5d:8e:50:fa:3b:cb:c8:b9:a5:33:19:fe:b9
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 75:6d:73:b9:d1:88:91:07:eb:3f:a7:52:a4:a5:23:96:e5:54:82:ea
Fingerprint (sha256): cb:29:92:bc:b4:fd:d0:bd:71:8f:96:c4:68:26:e0:80:8a:5c:02:f0:c0:05:26:88:4b:fc:f4:0d:20:25:cb:35

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 329494371032834570305125090573861629909597
 . . . . . . . . [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 08:45:21 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-11 08:45:21 +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 756708109911201414727513079336862625899914239162819001180151219533513953314659364841910670771613864189842867746502900080390836181907838661367596306066655494778535591884153539815854590244412023868340095489534331605397398386285577070137203622490324460128230453107570679083645276786781995778798419388668895315848524379313477808782669571753373406533061881452357811008385690954922388579888946855751058888689646808542633039201691106130702847911690871023186459672076509486822933373865038717673147334053234211387716101362464653485780573010120280750913848771946336334757218073506510918817343670343270899395980399130328673192109512376971141607535798751055879540494488599490534465132324958739357859944174603284765721870740460560204822138916416589087269703955099396247806517806334489063726273898962026609806276055225418604177606041216784281899315681102716969449994371030349937166138148947804743504594569977590081890704852465370899310485591321293047617245950533973631342684834494971118385557819999577916958223111365875324740807696807235490453049790999616298344935973402777900453130947550233997815778787884531974278759533951637487031538307058478581512729741175872457018046121488365006655996424997486591620638991527715573816603764939719723364966789
 . . . . . . . . . . . . . . . . . . . . [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)
							72db8ea3023e455d8e50fa3bcbc8b9a53319feb9
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016dc48210c60000040300473045022100bacba6c061acbdb30636319fa263515bb08e77fac3341345ef66c1b92ae8b2ad02206e2e40b61409dba81718aa8f2d806a9d0c8878be2e067f18bc4c4f561d7554e2007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016dc48212b90000040300483046022100e4d9b385f8b4746e9bd793d55e932c0c0d5cdbabf21e75317fc2185806eaae7c022100a1a590cd7f4f8911eeb8dea2b8e34e6e0ebd67e75f86bbc965b3d65cf00766dd
 . . . . [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)
		004bcbcea84009cfbbe7645d9bccc203ac88dc3c007600d08a4979fca235377728ff5809ef71e1fdbadb91dfced71938ffcd7feea065f5969c422d4194eaef11fc53695ee934eb565977e4676d6d025e292de00b207de51939c9f3e22a33cb431a5793fe2fa47a13edf442698c1a564f5dd85f722d0c66a5c33d003119cb7a12be7d8f05cfaddde2f8a818e97ecda38a014069503c828ba8826280b2899ebb32cbb641da48137f4bfb65ba5fb2be7c5dc43aa1d1ad76b1462537d674e3603c583479768292fceb2af0bac76c55620f5f6a55fd667d47f40eb4eded49feb578e57b9ab3f00954ecd65542edf1f8fd05d0eb50ebb2cc73fe094bd06757ddd02acf25