ctzn1.com

Issued by R3

About this certificate

This digital certificate with serial number 03:c6:b4:18:ff:b4:fd:bf:39:36:5b:bd:71:9a:6e:80:05:33 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:c6:b4:18:ff:b4:fd:bf:39:36:5b:bd:71:9a:6e:80:05:33
Serial Number (int): 328952157286346494464843150620083418563891
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f8:b4:54:d1:ed:df:bf:0f:70:9c:24:69:b3:e2:cf:5b:bb:f4:7d:12
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): f6:f1:9b:2a:db:c5:01:25:01:7e:bc:47:f6:3d:6c:66:09:61:a4:4e
Fingerprint (sha256): 60:5e:f5:7b:b6:1f:bf:44:26:3a:1b:21:87:82:9b:c6:3a:67:42:a4:ce:43:89:13:58:d6:0a:a3:4c:8e:e4:39

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 328952157286346494464843150620083418563891
 . . . . . . . . [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 2024-01-10 00:12:26 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-09 00:12:25 +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 894145188761247527712404104810411660075265098569742079482578488181723874693393062613568992342307296662697468555315368081128232460667591716471466693213066872459673409900306977653081856497668189126064690829667521150783154756190491984255598981323629551479097807577093680244837529868232966475818303487848995510336508222999803928368047136155146599366568479756399383046097235588869955011640428888058043135613172934026552466645622075242810405814953654827894322915532515620082424293109778501428628854302102993799370877566551215316101199001370660389216319665320413304196796091486133061126178082571449977449903762306874234661981488159141116906339381178498707777329610907482052894014815428729823124847079466159378644759477693166640245965542477949701902889535907548766722826324243563565961307000129978381996696509260754857812329962919970614016119735560348256036529742367283779974052471637977791419367606330982478668575605623000242550358331775719455426753577961932943879907111557802751868731371085601646478563062531744221029755744477472354016657608875992020816714784771988802140997977748888854865089306007031659169654535556051065015721252217107059512269965221765298958852864808062513472303868860032277413107115256942585777658537650486700569929889
 . . . . . . . . . . . . . . . . . . . . [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)
							f8b454d1eddfbf0f709c2469b3e2cf5bbbf47d12
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f00075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018cf0ed83a70000040300463044022014c2b10762c9a9d72d396fca1d7e9c29d60f41d156d86cd543a0bc2a0617ddee02204bce9f5fcfcb7c9b83c3aee2fc4ebf87960a43717dfbe13f6e7590b4bb8d9951007700a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018cf0ed83f70000040300483046022100deae0f3d2512567dc9414b37513524e965d99b9836c14514676327095846b0a5022100b2d48d3ef4f9e70eafb58da253b56cffadc3abd6dbe0f57ac19e4371397dc672
 . . . . [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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