*.knstek.com

Issued by Amazon

About this certificate

This digital certificate with serial number 04:64:45:ed:4a:8e:f6:9c:40:9f:20:1b:54:bb:cc:5d was issued on by Amazon.

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=*.knstek.com

Amazon

Organization: Amazon
Organization unit: Server CA 1B
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:64:45:ed:4a:8e:f6:9c:40:9f:20:1b:54:bb:cc:5d
Serial Number (int): 5837559955405036878043689605635230813
Serial Number lenght: 123 bits, 16 octets

SubjectKeyId: 3f:30:4c:3c:de:38:00:78:4c:99:66:b6:9b:60:64:cd:c3:43:5b:7c
AuthorityKeyId: 59:a4:66:06:52:a0:7b:95:92:3c:a3:94:07:27:96:74:5b:f9:3d:d0

Fingerprint (sha1): d9:ee:74:15:86:52:47:d8:66:16:f2:5d:b1:45:66:9d:25:0d:ec:32
Fingerprint (sha256): 6f:12:a8:3a:63:50:bc:c3:61:2b:41:71:9c:bb:47:8d:01:9d:6c:d1:d7:76:54:11:92:74:90:d8:53:6a:08:04

Issuing Certificate URL: http://crt.sca1b.amazontrust.com/sca1b.crt

Revocation information

OCSP Server: http://ocsp.sca1b.amazontrust.com
CRL Distribution Point: http://crl.sca1b.amazontrust.com/sca1b.crl

Check the revocation status for certificate *.knstek.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for *.knstek.com

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

10 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

*.knstek.com

Other certificates including the domain name knstek.com

(limited to 100 certificates)
knstek.com
knstek.com
knstek.com
knstek.com
*.knstek.com
knstek.com
knstek.com
knstek.com
knstek.com
knstek.com
knstek.com
webrtc.knstek.com
knstek.com
knstek.com
*.knstek.com
knstek.com
knstek.com
knstek.com
*.knstek.com
knstek.com
knstek.com
knstek.com
knstek.com
knstek.com
knstek.com
knstek.com
knstek.com
knstek.com
knstek.com
knstek.com
knstek.com
knstek.com

Certificate

The complete raw certificate details for *.knstek.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAi2s3mkRYLXAWFke15Pak
HwVnFjSHYQUR+xftS7MXiVWq+79XBlFYDO8xWkR+0m7CjOSzBq9siKAV8FxPq2/3
MWBw17MV0vi++zrCQiiBj1NKqeHqyk9CxmsZFtfgYJfOXy0X4V/5qYNzGfKgxGQg
QuBIPlUaMhs/tvz5y/j/UWV0RItvOD1btytqZo0UBki1PuJBgx6zs/GfBV4njdo6
nrw13Y90J0xrlYg+zrqxaH6IAaTOQvABOAR+J4501B1Fm4SaPkdXlvU8Z76e0Rmk
aKE1w5st8m6M90E2WG17WE3YxuWZMC7BdKt5F3gEm6IJAb7jNoxqfwgl96/7aKcj
yQIDAQAB
-----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 5837559955405036878043689605635230813
 . . . . . . . . [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 'Amazon'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.11 (organizationalUnitName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Server CA 1B'
 . . . . . . . . . . . . [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 'Amazon'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-06-12 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-07-12 12:00:00 +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:12|false] UTF8String '*.knstek.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 17599995160977366288399130471237975508992390826151402571970658049074533743160871429093197508350614551515624000084612337024204825695726337624048476350532601807505827819806628573494146795920089816848057104040945287114434008391690424323791550952742499895241124914660684115355723790139936391731912656984923617834363724899290003966478524609291396632094595670279328556943732185875877773820139145372341755476418686761742099585889613324134606531058598692449547996067657432081297248659010246003558804516801876790914400966143059735908848309746772967634891860305929724104479721149652530085140328288631221876602389811584626533321
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 59a4660652a07b95923ca394072796745bf93dd0
 . . . . . . . . . . . . . . . . [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)
							3f304c3cde3800784c9966b69b6064cdc3435b7c
 . . . . . . . . . . . . . . . . [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 (16 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.knstek.com'
 . . . . . . . . . . . . . . . . [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 2.5.29.31 (cRLDistributionPoints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (52 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crl.sca1b.amazontrust.com/sca1b.crl'
 . . . . . . . . . . . . . . . . [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 (25 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.16.840.1.114412.1.2 (digiCertDVCert)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (105 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.sca1b.amazontrust.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://crt.sca1b.amazontrust.com/sca1b.crt'
 . . . . . . . . . . . . . . . . [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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f2007700bbd9dfbc1f8a71b593942397aa927b473857950aab52e81a909664368e1ed1850000016b49235ff5000004030048304602210095b037953e5f17312b0f0a75e540785e05e06cadd1bd6e8d2d6a77f3e8b597aa02210087c6edfe04e5e255c0457c1a93b05b6f18e0345c89c7573d82f6d969a17f6eed0077008775bfe7597cf88c43995fbdf36eff568d475636ff4ab560c1b4eaff5ea0830f0000016b4923603a000004030048304602210091f4f3b92ac055f27e5c3100f76b3bd7398c75793174ab949e7244a8ef7628f7022100aae038aa9129fc5e9265a16f23b1137e1b177dbfa0611ef627d09bcd70eb38dd
 . . . . [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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