sangervasiobresciano.com

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:49:63:73:69:1a:16:12:6a:ba:cf:d1:40:0c:04:b5:00:62 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=sangervasiobresciano.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:49:63:73:69:1a:16:12:6a:ba:cf:d1:40:0c:04:b5:00:62
Serial Number (int): 286309663397950457492986809105442013511778
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 29:e5:fd:1d:7e:3c:33:3e:c4:a0:e6:37:e6:0d:d7:44:60:2c:e0:40
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 46:c0:d1:02:8c:89:26:14:86:5f:7e:98:50:d6:b5:0a:2a:05:d8:34
Fingerprint (sha256): 98:8b:c6:6c:50:3e:ec:b8:27:bf:e6:59:e4:a0:fc:c2:43:cc:40:1e:ec:fe:f2:17:15:b5:1b:70:71:3c:d9:89

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 sangervasiobresciano.com

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for sangervasiobresciano.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

sangervasiobresciano.com

Other certificates including the domain name sangervasiobresciano.com

(limited to 100 certificates)

Certificate

The complete raw certificate details for sangervasiobresciano.com in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAqglhi26twQ/gsW+bwv9f
hfGeEOl/fZe94OKebJwyjF4BsXLf29QM8bKCL7F2Lx2rk2NA2uEaWvrQEq6qyqZR
xkca4o2oM/t65gkSSh/1KCaMwXcncPfQrHTUfNTfLQM1dScTmFU6X07Y3Pc/pexk
gCQVMbBPRAgqQJTkxZfj5QQgW0PFLP0jTpJTkVKsrG9w3BNRgtDFGr24euT1roGS
HQhgSaCkioTmDzkkyR+sLj7HPgL8Q+Eqbj5Zy+cDkA88rcPRf3EA9qHOqWcJ1RLX
GqO/r6S+ggJFP7rh+2YEUzteZGrN85w4avsyrRQSKlVrvYakRopqmsOrK3P9i2Jr
yPz2EFe5Eq+3KeEzcKqlP4CmDtzLizkQsCvY8c0Y1Pkqin/zAE9fU8iCxMx2h4b4
n+uxjogcebdIr8VcVAoQeg/0vvPHo9upeSSw4mzgj3HXu0CsaIXQbol8CMZ2PUY/
6u8KfGOGEfi8yWrdyWFHgFXKelyWnFQEu/SJt3U0+RsGcbx53SuNbqMhoz+dODay
tFPRPgTCw9GH2Z95C/KEg8S9h3rkFBPA1p5PW3QclyJuDAgKeUWDzv3pHUyjqwBb
7hPCywVeZHoRMZc8o1bmBM9so6kB/75f6eQ2cKuVkBlgcgHt4xcYH8KyXg0umlIC
9fqE2nA0zXCbrwEl7S5vyuMCAwEAAQ==
-----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 286309663397950457492986809105442013511778
 . . . . . . . . [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 2019-12-15 11:42:22 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-14 11:42:22 +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 'sangervasiobresciano.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 693688988746898676154554631487709079757715037739120024465971566006935483347592652544570423610278093136647026030803786753244111589037707533201404403671140790082935558470088659380666979581648802755377346157193917301957266327294320914400306812287141016636540461404574324219914632245284245243250517719906612372894076924040180279634834385733921242721188900174728211922837150398672218763185154393498293319091717083162428675038744153544129646249628534003421557138881628501492551596328023409519060590906292050617134755477589445390894887211852385572625409542485318168698737677502692246238004846127466244926755690892034086385499687085678900013725878980542071003044184739265829360685798080967242701260026630244027106281118082782323311158739056059680347733922788494566613977323148044230114829945985028105568320970274157322301172323363930768717989248697967503590361195314728472442987406725040828036565665210024005181410644273604483554420778762995609071361334433429943969183151864182912868186038341323011835160198513361631075568565857077070818769606624166058193375166203693670298425465734346902991356727715990678471884375902003484541220242567248100149093562190731086212491656861783002953519052246436022478717650500876474971292398656296956367719139
 . . . . . . . . . . . . . . . . . . . . [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)
							29e5fd1d7e3c333ec4a0e637e60dd744602ce040
 . . . . . . . . . . . . . . . . [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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sangervasiobresciano.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 (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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0075006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016f0994c69200000403004630440220245dd6854a9c4ef3a2588be80f1074d744c413b3fac863321eb8be996e5d09050220061c9423344c52fd0a2369e98c3c1d4e05560ddcb5a2cf39403ebc91440b99e600750007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016f0994c697000004030046304402201115056fb485b97a8b7c80ee2c4f6cdee2047b636915dd1a1aff3f455238941d022028c281a773a872bd41355b571d411b91d7bf2c63b82bdcd13bde63574b40982c
 . . . . [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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