ctzn1.com

Issued by R3

About this certificate

This digital certificate with serial number 03:c1:c2:33:b9:82:a1:af:30:5d:e3:02:00:9d:9f:d8:58:55 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=ctzn1.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:c1:c2:33:b9:82:a1:af:30:5d:e3:02:00:9d:9f:d8:58:55
Serial Number (int): 327269493411939399023273948814580406310997
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f9:e5:60:20:12:62:e3:fd:29:77:0c:ac:a2:b3:80:9b:50:30:55:56
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 30:33:17:b6:3c:0a:26:28:c9:1a:fd:93:08:08:1b:07:af:24:f6:66
Fingerprint (sha256): dd:ab:df:8e:8e:88:00:0c:ea:cc:5e:ee:9a:e5:be:0f:21:fc:15:cc:89:d8:4b:d7:87:cf:1a:94:94:e4:ca:f4

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate ctzn1.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for ctzn1.com

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

ctzn1.com
www.ctzn1.com

Other certificates including the domain name ctzn1.com

(limited to 100 certificates)
ctzn1.com
ctzn1.com
www.workshopforge.com
ctzn1.com

Certificate

The complete raw certificate details for ctzn1.com 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 327269493411939399023273948814580406310997
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-13 16:03:12 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-06-11 16:03:11 +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 'ctzn1.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 598385865204996044513152016018135146927025698414058226743236789349118654018762961695832224348867618861594052049888429143980436927766585571583328032991358128840064503674844900460861890946460499413263250119190680010017415103923170279785111224363477417165532983772881585226725472648931596843167112252789815517078206605080522811046722292771016606791224762069947947222964336223883686819803384239492167200363093792816072932286328997735661767515070635456915060432644576436332944389248547904962729833764095880748414555402972249424330762167425638678826766467478582662227422502146813761062335646190060070586783231258685298883259648404062445343836758861260401783155867055998587465944160599838537691746933275423806742390492431966299285607718253121025502696107694486165943022049857612353260114085817174357984452099572548863589046657639987601874650681918195576852993395492606972909080508466962969194597083594710100833606870583035222255594958566989820081340850828128438979324021685052921985296037687469333949798775718030731802507966598567917758921165785157211047041240332019002737269657905462128389430928074691092522400505163582970992408422455943931617423634265659246884737763422266128411528069719638740680636688032494912063259878015582886482162011
 . . . . . . . . . . . . . . . . . . . . [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)
							f9e560201262e3fd29770caca2b3809b50305556
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ctzn1.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.ctzn1.com'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018e38c49ab3000004030046304402205e975493a5a9ed9e8fa1986a2c2ab8fcc38b6a5d1bd26b9c2a1ad683c74de55302203b35f5ca6d50f793d6d4848a57237cb92654653a70b2e120c01a05901f9a6537007600a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018e38c49b85000004030047304502204f8802688b8c0383210ba60cc7c062ad973244f5801a8ad20197f70cb400668b0221009e1fca27e94466af73658507888fc06c80d5e1b8c3f161b34fdbabc9b63f4c3f
 . . . . [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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