www.durafon.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:db:46:68:23:29:f1:7f:68:0d:dd:93:b1:9f:5e:53:a2:a3 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.durafon.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:db:46:68:23:29:f1:7f:68:0d:dd:93:b1:9f:5e:53:a2:a3
Serial Number (int): 335952282822751925874748597291753370002083
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: a4:ac:0d:b3:65:09:1f:fa:f7:cb:f2:3c:d3:7a:86:f6:6a:2c:9e:0b
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): de:99:1b:e6:3c:6a:1f:ba:ef:f1:52:2e:f3:61:74:bc:43:34:67:28
Fingerprint (sha256): 30:ff:98:b4:87:a0:46:9d:a1:f1:a3:57:12:b6:bb:9c:b4:3a:d5:ad:0e:d5:67:bc:52:f8:5c:14:3a:64:84:01

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.durafon.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.durafon.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.durafon.com

Other certificates including the domain name durafon.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.durafon.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 335952282822751925874748597291753370002083
 . . . . . . . . [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 2019-12-18 16:02:56 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-17 16:02:56 +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.durafon.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 938700682021625058654828346939309236048473987178369388378298857848496910199423588803652533112176025907014815192926751943755762835454307703625282298107056829748572811873078796634124869240048846886336594450417985188272863726205038074976116279751876786296438423166302539418590265167101354902091924550982018425846414341325871965088501910460906388003309359162462552473371872748716937074033340822294102739373133155293907566666090026922001298444872325878591398240840993007512317102404459793438698284253113023163971135848590080977591687773010192471752259937091199208639570685654947647102138258951934696825031318858650012940562412731569829863975297194769516359011779685325508774023207894245152103948951923590913252428267428153776229999985541214707448338225436596259829205576185962183323953873762089591471495274395396584516781093972918785152042799602208849741687946509017001561255301079840636584783413282741740899809223824499802583166937966606436474792344236667310669845678596361099905653305180247275578166612468323386397379419042251303793674044763216801779515265924464785977901207158867399172513191434429265603332621673406901680011867342661326619823712912766522531171338582691562546938572633488431177166319088572713070522517305055695302952971
 . . . . . . . . . . . . . . . . . . . . [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)
							a4ac0db365091ffaf7cbf23cd37a86f66a2c9e0b
 . . . . . . . . . . . . . . . . [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 (19 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.durafon.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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016f19f6691b000004030046304402205fb01b38822261f2603a7331ef3a0bcfb17fa0b66d0960f68056e527b6eea07e02202d5ee8b370b76d51952ddaca7eee53ba167256b901aa38c8384a5669bdfe58ed0075005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016f19f669370000040300463044022068db6214eebacbbcffb014ffaa0dbafd8d9902f06831ffd6292c154a57a63e340220346037b92932edbe3eb69b403fd424a1f4b019acd040481139aefe0fb971d278
 . . . . [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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