leonardocomputing.com

Issued by R3

About this certificate

This digital certificate with serial number 03:84:97:fa:d2:0b:10:49:34:21:f8:be:d2:d7:5d:89:0b:39 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=leonardocomputing.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:84:97:fa:d2:0b:10:49:34:21:f8:be:d2:d7:5d:89:0b:39
Serial Number (int): 306456145990605339933192147969300507462457
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 7a:d9:7f:b7:ea:a9:e8:68:24:6e:a0:c1:80:6e:4f:75:42:51:bd:2b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 6c:17:e1:fa:98:ba:69:70:e6:9a:9b:1e:13:95:2b:5f:3a:01:f6:3e
Fingerprint (sha256): 07:fa:76:e3:9e:cf:ce:f7:50:40:2e:c8:4b:72:c2:e8:c7:20:84:c8:7a:fe:c7:8a:62:91:21:22:31:bb:c4:6f

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

Revocation information

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

Check the revocation status for certificate leonardocomputing.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for leonardocomputing.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

leonardocomputing.com
www.leonardocomputing.com

Other certificates including the domain name leonardocomputing.com

(limited to 100 certificates)
leonardocomputing.com
leonardocomputing.com
leonardocomputing.com
supporto.leonardocomputing.com

Certificate

The complete raw certificate details for leonardocomputing.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 306456145990605339933192147969300507462457
 . . . . . . . . [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 2024-02-16 23:51:40 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-16 23:51:39 +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 'leonardocomputing.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 797263644617065375233006655678410447591045164037593209261763400917754150243783224182326305285739116149920877749341468793482858199510192578274401314878090175947394516917528727575560051457678431671757644077039126592475911227763512610068952032520681433345311967065278229688375796755207199300996962228141353297348892905857722534854734363232113041729948367797380717215736139835959710804888327191325540239931813903791554028675830456876306473751660485453070929740509449717493294952525774643687832504576419491121573881903651700707374935194187108528518188417450639089516039158498532046912466942888202154591756176914739076625101905563973210348837208194132828202320262516732623608127636764299811416105816396664485598926325284655128227843997962265858811005315922234807582298996123175653078902332221245349825417671034301716686332169096303211331199364397769574354283634052500234932387808068551784328663826569462798956006143114597604847466606242181045332314515481000778232079267126503044255766826652660336016441662550425599209428016423801816217219740643148698763005380345412401520342978349745057095708919137510331610873882812262544841676928254540677615127889166686969948740126218199346440725114678064493137636947129510149967711477923796426293946513
 . . . . . . . . . . . . . . . . . . . . [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)
							7ad97fb7eaa9e868246ea0c1806e4f754251bd2b
 . . . . . . . . . . . . . . . . [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 (52 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'leonardocomputing.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.leonardocomputing.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)
							00f000760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018db48c261e000004030047304502204a49f6ae5b8d2c2c3a95fee6543dfc5703a1be0feaa233f1773770e23f09cf8b022100f52b261f7205aab21d68a63ab81600b3162a1eb48bb9771db1ed5b7bf7bd59fe007600a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018db48c25ee000004030047304502204002531d744a5f9142bf8ee2e2ac0d57845b737891fb8770f5690a3f228ac81c022100ebd3cfabf0938af24607620b4d67dec6bd4e4b77eba8f686c86e546c5c492623
 . . . . [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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