leonardocomputing.com

Issued by R3

About this certificate

This digital certificate with serial number 04:bb:b0:04:5f:5b:20:84:5d:bc:e0:37:8e:e4:48:6a:85:08 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): 04:bb:b0:04:5f:5b:20:84:5d:bc:e0:37:8e:e4:48:6a:85:08
Serial Number (int): 412315913171750797263981678265751321609480
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 62:05:40:ce:33:c9:35:f7:1a:e8:44:ae:0f:ac:d1:bc:56:e3:f1:f7
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 7b:ca:00:54:42:8c:a9:31:20:92:fa:ea:d6:b0:c3:c2:94:f0:76:75
Fingerprint (sha256): 2a:92:b2:75:78:bf:a8:1a:30:26:1f:67:1f:ac:cf:53:c5:dc:69:37:f6:fc:71:37:2d:56:93:12:c5:00:13:58

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-----
MIIGETCCBPmgAwIBAgISBLuwBF9bIIRdvOA3juRIaoUIMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzEyMTkwMDMzNTFaFw0yNDAzMTgwMDMzNTBaMCAxHjAcBgNVBAMT
FWxlb25hcmRvY29tcHV0aW5nLmNvbTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCC
AgoCggIBAKCm/2Yh+SG28JILkWMTpE0APwmuQEkWty95ZnAGl17eJgzw2/WQopSk
UVXEHMfuWF9xZcTjPd/KpNeuDEHcIg7pC2vzAEYqop4ZQqDLcVz5lXnEktlXnseI
k8+T/DrhvudgOOYn1c1RlcZP0Is+y4sZshvYSrOTUNxMY1Kx2PS754gCSvNWd76s
RnxOn1R6ZJjw31pbLvm7Gydg2VTyGo07oaSRGfXK8xI0IQQV0C4HxglWuQA2YSU2
SAyEVDYfeO8R9xpmAoJ46HPxiJdTun+Y44GLC+HaSxtJA3o3Vv/RaUwZZZNq/AhQ
5dEOm0Zz10w/yt3IGd/+2W1jCVlDfrX8XccpmQCu49KZeoKuYWmjupOG5IaF8dC0
B2vzQF19XAmTEiQtJW+FVsEprrmKfzwDk7RfPDi2N6pEyJ6moDj/gH26qXt8BwUQ
0BKwABIynbrRnLbBr36HmUbY3gatp8zTEcVRVz7eTiCw6IelZQw6FJ+bfBVr+8w/
frlEv0yCEV8NA5hnppALk1CtrdjthVCA0RGL9Jhcs+HbjFd898GSi7sZEF95BqDC
DH2HrJn5YJLkdkxjia4V8eMVW2trJhQXgMpsSs3x+TlWmw8tWSnxzNcSll9v4/d1
atZ4o1JmIKwWMP/zWwOonPD9bLl8PJw88bjQTauSVbr0Bq0MZNQTAgMBAAGjggIx
MIICLTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUF
BwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFGIFQM4zyTX3GuhErg+s0bxW4/H3
MB8GA1UdIwQYMBaAFBQusxe3WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkw
RzAhBggrBgEFBQcwAYYVaHR0cDovL3IzLm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAC
hhZodHRwOi8vcjMuaS5sZW5jci5vcmcvMDsGA1UdEQQ0MDKCFWxlb25hcmRvY29t
cHV0aW5nLmNvbYIZd3d3Lmxlb25hcmRvY29tcHV0aW5nLmNvbTATBgNVHSAEDDAK
MAgGBmeBDAECATCCAQMGCisGAQQB1nkCBAIEgfQEgfEA7wB1ADtTd3U+LbmATosw
Wwb+QDtn2E/D9Me9AA0tcm/h+tQXAAABjH+1N9kAAAQDAEYwRAIgIUgvB7maEBgA
EssUnRngKLHvzvdS0bfnGQSD86nTwlMCIC7OE6vhfRlIzxHf76bQXUec8VH5ixkR
rvX2LyCnkAxAAHYAouK/1h7eLy8HoNZObTen3GVDsMa1LqLat4r4mm31F9gAAAGM
f7U36gAABAMARzBFAiBBJuaYoMR1L/z/hspfzksAGdehL0D16HoqNAk8XqzEVgIh
ANH/DuZs7m0HVxIi/us1wRp7PhX0B4HhO4xZKjmahlbNMA0GCSqGSIb3DQEBCwUA
A4IBAQCwM3RHqnyIwj+BGfWtgs2uotQdSCSbLdkM+tU6l+D3JnvB/k3ifKAhjGP6
mQ0ZPYCnxHnzj0Scf1hSab9yPx6ujF5pgvKxyfiEMo619fnwHmjaK0mCVOpr7YMO
i4668ucWFArLG0qbQoLIK5HEkvRTbj7WHwGh8bZg8kOOqwrOEZXO0CCZFRjD2VKJ
5TjR21V3x/Hse/jV6s5ITtI2CC+QUHgHok9n7G6hD3LHuX+XyRStJFuLB52F7uib
XAGLYfd4T33KYYuSQWvH8Y4pHD2cosPSsyZVuZE+lojw54ED8HGaxj4IaGqShWKl
k/YaegxWk2uAx6OnIgnDxFvsZCH6
-----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 412315913171750797263981678265751321609480
 . . . . . . . . [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 2023-12-19 00:33:51 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-18 00:33:50 +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 655404343777964521793014190158153898359258805010689386945200673984805580842048442361142670681010073146926013270409154628093699614807624609202144682125853282825374841650166620010223063363543597008552716686347968739563258308608150392287173670903263798431461986421670069052355066385054762044481667457605258802362196057720343635184407228388679012798230732358511414027424492718580396046299778051402008020323864930941388931725366536647355044834112344353573247146116674102054565317282529306281809511038901709748447087451346645478134816877177644820504872896403415738288827928182527715564794928823877231400195506670898988308119244041162501819218034497948684201005243007635643507621536706071048664203624743650282677918300511480454685851619308591322348505808730935736408796361542427880051463646357267897812686832997439551738463152657616661567262225679272190729869948744533708382924740842783236341887929893731990760922347943218261882829576743774911143315700073346921366899832776401057124674404738265069122321778158066103145385542462311549202019400232250388080654139250180376630782239493706930001099234801983422098224599404883715343147659498153236797317972900869415913582955677416203409395370908024048408798986393667692117011361607234197182010387
 . . . . . . . . . . . . . . . . . . . . [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)
							620540ce33c935f71ae844ae0facd1bc56e3f1f7
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c7fb537d90000040300463044022021482f07b99a10180012cb149d19e028b1efcef752d1b7e7190483f3a9d3c25302202ece13abe17d1948cf11dfefa6d05d479cf151f98b1911aef5f62f20a7900c40007600a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018c7fb537ea000004030047304502204126e698a0c4752ffcff86ca5fce4b0019d7a12f40f5e87a2a34093c5eacc456022100d1ff0ee66cee6d07571222feeb35c11a7b3e15f40781e13b8c592a399a8656cd
 . . . . [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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