htk.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:b4:51:ba:b6:b2:86:0e:4c:bb:e2:26:ae:3e:63:ca:78:4d 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=htk.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:b4:51:ba:b6:b2:86:0e:4c:bb:e2:26:ae:3e:63:ca:78:4d
Serial Number (int): 322696320781466578097709536727345725601869
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 55:5c:38:e4:9c:b2:87:cf:e2:9b:21:3d:be:9b:b6:c8:fc:e9:9f:b8
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 6b:2e:66:8f:fc:c8:a6:95:95:70:24:fc:7e:4f:00:11:5f:7c:71:d6
Fingerprint (sha256): c0:b0:b1:bf:6e:74:d3:bb:84:49:3d:60:47:cf:b0:a6:c2:0f:45:d0:d8:2b:ce:2d:f8:f2:03:f7:9d:8d:32:6f

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 htk.org

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for 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

htk.org

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www.htk.org
www.htk.org
htk.org
htk.org
htk.org
www.htk.org
htk.org
www.htk.org

Certificate

The complete raw certificate details for 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 322696320781466578097709536727345725601869
 . . . . . . . . [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 2019-05-27 13:18:39 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-25 13:18:39 +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 '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 951313748047919556304788311758180705581378071388181603950034207531336379399483901732860249208993472686399470063022729740476171804206188803035028378583526203678150261032750249551186847212123202592442038909301821767510289633659713644374591278446670595612676798496386356948964715232327119479693819714985411754990590335369875872353577112961854180838355449497820572804108690132264313192828970422242257247543273132286127409521793027803043438736314665850269295995591354387024210321176320901707975311184285248209560733070566439439846066120038876363328806427007357122752138688400257588638655089952388968324440385673618744152187817051240405014237895409347719591895845758096299794123113126652588878396178309478811424295217058722192966751447462597796575436329086512655083834724181260228018632668333834234285740249328062956373313964593969966018645097423803348435782479577895170328361998406264519996622288403640823535614325380552169755650269805409716652169722283081372906303341989345246157058666108794167790939330842641055305386782502189320444865280235553866179088490832275417852744923226777809969038583996032424340902236202215068308157349722610391324488509412794322054362478964243159821342116756697591944386887690107866997901154890681396378184589
 . . . . . . . . . . . . . . . . . . . . [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)
							555c38e49cb287cfe29b213dbe9bb6c8fce99fb8
 . . . . . . . . . . . . . . . . [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 (11 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016af9a8539b0000040300473045022035c9d3d863119119b783ee6558d51c4f488cea950d845da026000ae8337a6426022100ab4236db868ee62cf917e063269ac42d9e9391a7a33d5eba71fbdccc9c389dd0007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016af9a8538a0000040300483046022100e214d02dac74206a686b035c5a1725f8f4cc2e5a319f5e260b904aacb2c86089022100b69164f2f08c65c76b9738c57f131642299c9fc83fdb1c88e14015552ab537ca
 . . . . [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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