pruritusliverdisease.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:a3:12:96:8d:89:89:c5:84:83:81:29:5a:90:3f:d7:bb:05 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=pruritusliverdisease.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:a3:12:96:8d:89:89:c5:84:83:81:29:5a:90:3f:d7:bb:05
Serial Number (int): 316827591422563268804108246285880948931333
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: b3:a8:73:58:02:de:ea:1e:df:89:91:39:04:98:9b:1c:cc:65:f4:d7
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): e1:14:3a:76:99:bb:21:b7:28:f6:71:b4:7c:49:8c:c6:14:6e:9b:db
Fingerprint (sha256): 5f:66:c8:d8:71:f3:6d:e4:b3:92:db:71:41:e7:c6:0b:55:98:08:cb:01:a8:eb:d6:74:d6:c7:08:af:a3:e5:5f

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 pruritusliverdisease.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for pruritusliverdisease.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

pruritusliverdisease.com

Other certificates including the domain name pruritusliverdisease.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for pruritusliverdisease.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 316827591422563268804108246285880948931333
 . . . . . . . . [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 2019-07-22 13:32:41 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-20 13:32:41 +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 'pruritusliverdisease.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 925670571530810167476644535474557416744213587086096552672018058248249579000958699683935901024357600210223519228145320615584062925331432324342865212406943951724898958151984429860008727877541197988600559084965891945164550181607079808226754120235054319308157034866870505393092372759229039011610069711848922333807830973572893485175249066230842082708881654054210415767508249099559251051641334319391159658246125818609141016949043251069035457897536682511125539620445019884552107253409521399194994269026314554939336865512549675940101792383019310101167424304683881674560558213347080706904253387430791667751281047237995937574212613567983894390249431852099525855940288358258983299545139753711433351877260923642201460630308317728899304215693624397075855654100235303095193448371696573824935738778353647780595083292342274570222423467761829190493643474529730621704737577356945198539860067571010704693357545102566260753347346307150432757482085710678834522241767043656670451911307214119413450745753318887055562753510660324460113322061585584936659586118510557979019591680697968980374317237849547923108306748531159142054964585147051217494928438367035756253570324340260469898065530445429907894501502355973413611640938476559979366071380643372866887453973
 . . . . . . . . . . . . . . . . . . . . [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)
							b3a8735802deea1edf89913904989b1ccc65f4d7
 . . . . . . . . . . . . . . . . [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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'pruritusliverdisease.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)
							00ee007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016c1a194d1d000004030046304402206b8cb0a82275c7c40e02ca1feb7c1cec5f113c3ecb0ad7d1c93574e7696992c002201c7d20f39aed1051c0c8bf7bbaa2621f8cedda93c20e47378aaa92f8158ce817007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016c1a194cbb0000040300463044022042ee6d455f4ca48a2399aabf6dc998ae3942f08a3c1f6ea7575322998d70354d02204c0fc5d0130e372165bdc888da3e9e0cd68e00f63bd980bc42f1f2d2d38a1774
 . . . . [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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