www.htk.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:b0:1e:a4:61:d6:2d:ba:31:5b:ef:5b:ec:6f:52:84:81:de 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.htk.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:b0:1e:a4:61:d6:2d:ba:31:5b:ef:5b:ec:6f:52:84:81:de
Serial Number (int): 321267284734286966948344689856297484714462
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 4c:5c:cf:bb:fa:d0:4b:df:bf:24:62:e1:cb:fa:02:fa:07:7b:28:3c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 63:02:cc:6e:3b:62:a7:52:e9:6f:1e:60:e0:43:61:bc:58:1d:d6:b5
Fingerprint (sha256): a5:e2:ee:89:bd:e5:af:3b:4b:a4:0b:dd:70:f4:44:d2:06:3f:f9:5a:30:9d:e8:b7:03:c2:c0:97:61:e8:a7:f8

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.htk.org

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.htk.org

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.htk.org

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Certificate

The complete raw certificate details for www.htk.org 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 321267284734286966948344689856297484714462
 . . . . . . . . [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 2019-12-15 12:10:35 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-14 12:10:35 +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.htk.org'
 . . . . . . . . [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 809596330622578047883197722538609272501802676703884351091881549301563410204373561524938651460638645872460035686717122494764745549305975018499255292683914854210813823121256333174334326609281270176334872382580245861191238768052913358889893109586256836412771004336748163273177097841425140153294608593122753159772295015402594687580094931165297855382552691498645502816371478062617363176237320285094277918334215039642311405129299658370641295877990076382207281186369931044390415119465361346754451425363260569508744947822057729378840667492902878200258550373975560430458758751774281579314566347757545617940876754217564217901595667368006865227127144348240758740062712822653482101173083701114256122853111719737789969981339963297613045434441552463705433310367506357771345601441478445918770980308055551959634044895244104084695784844053819012871529138990615750330411283868929251913722312367353469569171942276406747855138206543322536749852914062933681879983062792761176507383877329655574968128398875274919152785330309476103778821274261442745617677229244572631195488577085801807968943612952075924651094375822498762893121617368296256197219855837114144141996037775898608018989408296641240730491898000822304429516727145734102931209353264807251462578671
 . . . . . . . . . . . . . . . . . . . . [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)
							4c5ccfbbfad04bdfbf2462e1cbfa02fa077b283c
 . . . . . . . . . . . . . . . . [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 (15 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.htk.org'
 . . . . . . . . . . . . . . . . [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)
							00f0007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016f09ae9bfe000004030047304502202de982872feb462bac75df6c9822b4ca5629f82bdf1de14fb847e87ff7da1b2b022100f0332c6323a5d3fe94c22c09ed1f4e195cd81428fb83ceaad59f9416ff9a077b00760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f09ae9c5600000403004730450220616cd227d84c4fa8e5e368f7969b3c8115ab1c03cef5f45bda2ed68e15882d56022100af676b38a0e2e0a816f0164527166f8129c37057fc01a42fa17a42c5f014c1db
 . . . . [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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