www.kzw.net

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:1c:26:c1:5b:f0:a3:4f:b5:a8:41:93:59:7d:af:cc:ed:13 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): 04:1c:26:c1:5b:f0:a3:4f:b5:a8:41:93:59:7d:af:cc:ed:13
Serial Number (int): 358028564642725362943690928098479092591891
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 2a:54:7f:35:81:d4:de:8f:e1:1e:3a:89:f7:2c:7c:4a:54:00:5c:a0
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): cc:c7:db:35:8a:de:5e:5d:4b:66:48:ef:63:24:24:dd:2c:5b:a6:33
Fingerprint (sha256): 10:06:7e:5e:61:7c:63:bd:ba:4c:d4:df:84:ab:e9:9c:f1:b9:78:0e:5c:01:8b:c7:57:70:78:a9:ec:9c:d4:ef

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 358028564642725362943690928098479092591891
 . . . . . . . . [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 2020-04-12 18:28:01 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-07-11 18:28:01 +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 930786604811943363590309230197074733105580556221455172554913332574546831009213830791050641326508647638634149683218623918795698623986434062237854085138583335229868915430095165298266062198379929220264769016437521274688163077208844563456079905308205497520374770679185777250896936332773202497347332931149288937193604482812482959929201137790098804517427899590638064322621984759800658618142422813122213488108229982664295165402710382744536237568767705577325190998036943199657920503128428819354914105900932400203400249843268104607903289266001239850563319829759274086549858571490346209680041522816814371124663089034966952429364649586831758051960475147760086931212235268923706595659827720589939260162709749986595099974718261939751042036062047187857017954339666896414671476163408823172863818321567889917726170082990090299495688076425775630030745707302788963967102953191120739237444889862136581361844095819689152600120835086569026438871459311276759783133104703732191519579118470737875834971382701827387760712901667081531964558484199537007087515020648218077634620711552615340931697830497290860236924039646489993930544834485847783777010424541540623501673080674258782359129308983230300135432833788680562683935084645485440322225641725115703583697657
 . . . . . . . . . . . . . . . . . . . . [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)
							2a547f3581d4de8fe11e3a89f72c7c4a54005ca0
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e000001716fdcebe00000040300463044022040e03fc26c6957966ffd3286b19f193bb38baacd8ecf1b3d7e62ff5301551d0f02204f09246a636b8abba5fe7f3006a382904642e8d3ba92314da55afa7da41e2831007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e000001716fdcebd600000403004730450220669ddd9561469bc4ffc2bce403e5ebd6050b0c7ac3b600c75cfca41fb1dd01cb022100cf8a91cffe3d92732c9b9a9328db9b0ced46c6f8ec2f30d96d519c7b8f52392b
 . . . . [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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