www.htk.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:8d:bf:cf:5e:b9:91:d7:2c:80:07:77:93:5b:14:bc:5b:63 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): 03:8d:bf:cf:5e:b9:91:d7:2c:80:07:77:93:5b:14:bc:5b:63
Serial Number (int): 309571630805026547193268332151215010634595
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 4f:9d:f9:ac:8c:2f:f3:f4:57:7f:91:1a:57:38:7d:c0:d2:8a:c5:6f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 74:6e:8a:fc:67:5a:4a:ff:75:78:37:54:79:b4:fb:c4:bc:93:12:d0
Fingerprint (sha256): 6b:2c:40:91:47:e6:d5:f4:0b:2c:f0:f9:30:8e:03:5f:1a:d6:9e:d4:80:53:ef:4e:8e:9f:fa:5d:7d:5c:f4:8a

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

Other certificates including the domain name htk.org

(limited to 100 certificates)

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-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAtKFInDoh/6FYKKACj3vf
IhsyGip+bXBW6XGoQO5MQvUgLBzYp5lXKdpoOqXq8EYYseEljVZJDCAZ8iacMHKz
tz8/B2uQnCMq/NgYEt6KuklBvPSiyv7eeX1ei0lOxkpu/v+8HsXvOfmSJRDNZScC
PZWZjctL+gcZnhR1dwidLUQia2tbbSYAZSuqrURbQtuQWuKQRNk1CysqO5ZIQgw7
M4JP5C4hwGUQnVnNhJ8m5Q3Hvz9xfO0mgh5B16iKsVqW8Xx0bbJ9n/SDHIl6gepd
hY+QrZoG0UKx4xtKHKWToAOKU8mnukEtHxZyrCMqcTP3Y5OSGCZN04bCVVOphCU9
xrg+JNOPI+Sg4leURUEii+o4Jr51OpYyUWud5Kox/v26RwsT+swu96DuS6tkwDmZ
5hH5infzsMQ7U1k/DdMb8MnTkY57zBYja88sYpAYKD23EZ3bMwU4ZPPFA5prjtNM
dC4OJO7qJvtjRmR98N9lG1IgY+NoMViMombKnFx8bIO6Zf1LiBz//TJzjp7ER4W4
yAPkgRh6mpqsvsWGAnq4EN2L40EcOd16HvZ9jYt9ZWOAs1oxsbOuasOE0ft0Ei8A
PCgYnVm0pEfOkHAxZdW6bQoJNT/0tBsGgyVGWrt54c6BEFOOvM2R/g1JR9BzJSyU
lwJDLiON5OX6EbpJUJ9T/D8CAwEAAQ==
-----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 309571630805026547193268332151215010634595
 . . . . . . . . [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 2019-08-08 04:11:46 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-06 04:11:46 +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 736906165915685708390922038920514467234651631618043638045666068535681928988022465478134000300088526566285155816704365202345589484738563937228845000595470593924761819250620722769495839201619551002355429014639455662793598494983422907147574728406868353988419155209205943918162415554576686649494194402905889796884200645877073619230221953389632524594995807956491368661504974063624362587825134478637629823866489751155861807837974356910876810978643558822687425982539391465717032141844863713580018935956544635506763151350452352931946275784828732200085408227220431384047125301057520376649597456417423692000968205357486732290608728008957919147859931084473517626677718206085070356766504237929908297443377027043416020663343413634614375695511244969716482122394007551939574430936037709473851252225345567893458997277742389908323394963549073063465411058540490005157170761754740550021223255328361725109938041572034678177823055976543714080251518511510939920691223607687060760393420381767307317566573077251679527815063693454771566504814318990520535964895050704320710259203939261272479869252300106302183502858408746646002921148270923325793012156579924286272442815221752051723548089845722084301312113287692147624237992275112245005054156354549006898297919
 . . . . . . . . . . . . . . . . . . . . [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)
							4f9df9ac8c2ff3f4577f911a57387dc0d28ac56f
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016c6fa3e2a60000040300483046022100f1e6d9bd0d42d0fb6c9abbbaf013aab4022be9368c539435e972f158ce48974a022100ae73fe3be75bbe7d94a1410431a8b125e0505c54521766e79c243df325c008c500760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016c6fa3e0cf0000040300473045022100f3b03d8a309b2bf9b1500b96e17a44d54c534641b7b8628c74eee1a782bcb0d402207b1207354991bbd87a3ad6ce55e292ddf3f4ebe1ab26523636e6388069b7e651
 . . . . [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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