www.kzw.net

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:18:8a:48:95:6f:b7:7e:6f:57:5b:eb:2d:75:87:b1:f9:8b 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.kzw.net

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:18:8a:48:95:6f:b7:7e:6f:57:5b:eb:2d:75:87:b1:f9:8b
Serial Number (int): 356799730872865788198093550161027084188043
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: ff:76:36:a0:3e:8c:e2:3b:4b:80:0d:9a:34:fd:75:b6:e7:27:e5:42
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 26:56:7b:31:56:67:a2:50:3e:46:78:91:1d:8a:1e:79:d8:58:c7:33
Fingerprint (sha256): 8e:87:4a:26:0e:d3:57:79:4d:63:ed:30:87:9a:8e:2d:ab:33:94:16:cf:96:3e:0c:7d:1c:01:5b:fb:b0:d1:2f

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.kzw.net

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.kzw.net

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.kzw.net

Other certificates including the domain name kzw.net

(limited to 100 certificates)

Certificate

The complete raw certificate details for www.kzw.net 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 356799730872865788198093550161027084188043
 . . . . . . . . [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 2020-02-12 09:11:41 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-12 09:11:41 +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 'www.kzw.net'
 . . . . . . . . [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 860584335341247160483121696781395051694230689864524801531933955269343521941001152023831570182563779438277349016827337663849635586120366310357227123748331102457650420783678297028878899627238243582032931705714307717021750596368863763134608180695773866414907015087358372054348755758392291475780640699748360607965178472430901699392265177154579919718795927575980129515388843264751526957731671431274272448215163600002012853766465475617734333321158134707571918867311475278714619166490030149500896423175244061063647959683210364902297390472638719300841934607393121905112413282377730135001492828481376457493437069202245750045608675508466801471926792406610265895274300787529572719401477256956196296572919053595610826607160479829732343139709036723212227791513080400393387473194010750262394408291289380633341067857582734093812211468965544213791981270998740323350387424626749735478233497906876844154897555220372303995494308313868880237078832413115280138599554676567688077301834672163428993618227559565398953141046982028860960150604060461493138266768245757092695026487565390611021888210035318359315442574008640760122416825490348211948965228264777751171444116934647578418170769493788865907018588306709187622262209113789150034635219102534357325608067
 . . . . . . . . . . . . . . . . . . . . [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)
							ff7636a03e8ce23b4b800d9a34fd75b6e727e542
 . . . . . . . . . . . . . . . . [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.kzw.net'
 . . . . . . . . . . . . . . . . [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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f20077005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000017038e204d40000040300483046022100e85c658e2ac2ef07bd6084af196387382333810573ce9ecbc3b012900fc88f4c022100b6f739f03ae1d2f00bdf20e48b22389ff6c82750d00fe28ed58b8586ff1045ce00770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000017038e204fa00000403004830460221009ca5f33b8fed189628630ecb90a60d0f7e43e2ce99b67b161d06355bdd15c78b022100bbaf5ed93257c654c3ade7d26fb7802c8f773e5c6c8be4431c22e4b680867eeb
 . . . . [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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