www.studi.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:c6:9a:07:44:a1:cd:c3:12:41:07:eb:3b:a6:bf:57:7a:c7 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=www.studi.org
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:c6:9a:07:44:a1:cd:c3:12:41:07:eb:3b:a6:bf:57:7a:c7Serial Number (int): 328917505295078709960701010224406769138375
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 06:c6:ef:79:ed:37:09:69:43:62:2a:31:92:02:17:75:7d:98:e4:bf
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): ee:5c:79:df:f7:2a:09:b9:97:8c:da:bb:c9:7f:d9:2e:32:bf:3d:fc
Fingerprint (sha256): 04:64:c4:29:d3:33:de:69:27:b6:66:76:98:7d:95:78:7e:0a:52:71:a1:eb:45:cf:d2:bc:0c:60:3c:4c:bd:1f
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate www.studi.org
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for www.studi.org
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
www.studi.org
Other certificates including the domain name studi.org
(limited to 100 certificates)
Certificate
The complete raw certificate details for www.studi.org in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGUjCCBTqgAwIBAgISA8aaB0ShzcMSQQfrO6a/V3rHMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA4MDMwNDM2MzdaFw0x OTExMDEwNDM2MzdaMBgxFjAUBgNVBAMTDXd3dy5zdHVkaS5vcmcwggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQDGFtrYf64FFAjvVnuy39qgZLrsZRBI8htn ez1+lRJmqjVLo8RaI+vB7EnAvMoFmOrqWz1Ls7CyPTWpPLItlKVBGwyZEpEbJT6e IGo8/ZW3m2M0DQdcwDN5MLdUxsT8GQPBctF1HhK3SIMNkhvWo97F8lzvvUyxxain KoocGpcHJysxI59+lqnb74fqRhEt1aNS0vruKx6uidUcR4yJhm1Ecla/S6deUtLU li+Eqwz6iVo9c6JXyr6CNVK4rii0odi4u9fX8acEFLWb/GO8SGo1beCb+pXzv6ux zsLXS8h+8kfo60ezg5l2E+X0+l0l6WjriAFZtMOGVhXBZ5IBkioqJWOvxGSZcjlV M3aary5qhVWkwXnNmM1TB84Z/53CY8Y93DAlr8lpImUD5mEYqLErrFDcqV808g7S 6QyND+aI01KvUaQkt/JbeUzBiXC/W3T+plVK5tVIRjsZdFspo5GBXG6V2/aGbXij ZjEhw0ol8jtxoXH3tRZTivrcgES/rnAG/GwopmPAEe5P3Dd9AcZEpahnGB6H02km 7hEhqUlCX/+SU8cwZlW+/Pn6qYnlaz3g1juxsJ0/j9dAG0epdJwn8A+arAPuh7lW gNn0BBBhZ/Zi9VyQKXMoA1ZPPtSrNkR23Nqzr6S/F5l0TsMGerl3xOhRmejNvbAm AvvpT7/QqwIDAQABo4ICYjCCAl4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBQGxu95 7TcJaUNiKjGSAhd1fZjkvzAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14 My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14 My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5zdHVkaS5vcmcwTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQCBIH1BIHy APAAdgDiaUuuJujpQAnohhu2O4PUPuf+dIj7pI8okwGd3fHb/gAAAWxV+tTwAAAE AwBHMEUCIQCyNfjd9dLZs9F6VTvnOMtwNM+JD4eW/xq/xDjWa8BUrwIgVjscLSRo ZRbDesYZzb0u9FTzkE00A+yTStTcs81zOEkAdgApPFGWVMg5ZbqqUPxYB9S3b79Y eily3KTDDPTlRUf0eAAAAWxV+tUMAAAEAwBHMEUCICCSNMnTX1bBjaehQMKfbNCT KQO7MDzVxZJl9SOZ9dONAiEAr3yAXz2W90jr4C1K2LWDF+XMtERZziSKKoc7cfSU E8YwDQYJKoZIhvcNAQELBQADggEBADwOBdBU2cMe0g5H19VGdw+UF1UEWqQ3vTyH NhwWCNTeqy8hrXnDAUxgceXVg7pRQJ7eRitJWbx39+nMq2vK5DgjLbdIov1mnsSJ ICh0PXJXslXv2suivRDTUNdOPFLqq7YZurh9jDi/4dXsa8rF4wUK38qlPtogKVQ8 i/dS1EDlBcIFiSl5wJadv57JaS6gWlFjQa0Ue+AfvYAweFFVV+/jss4JceMtg9ht gCau/V869Mo6YqnpPt9cx4C7JaWfo5rwZfOOYnVU1/+SgEBdqKtpxTojp/8lCT3U 08H4Z4INIdDBdvPZJymV6ioaSiOZg7IVTnR6yoC0kVi5ipOSb1M= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAxhba2H+uBRQI71Z7st/a oGS67GUQSPIbZ3s9fpUSZqo1S6PEWiPrwexJwLzKBZjq6ls9S7Owsj01qTyyLZSl QRsMmRKRGyU+niBqPP2Vt5tjNA0HXMAzeTC3VMbE/BkDwXLRdR4St0iDDZIb1qPe xfJc771MscWopyqKHBqXBycrMSOffpap2++H6kYRLdWjUtL67iseronVHEeMiYZt RHJWv0unXlLS1JYvhKsM+olaPXOiV8q+gjVSuK4otKHYuLvX1/GnBBS1m/xjvEhq NW3gm/qV87+rsc7C10vIfvJH6OtHs4OZdhPl9PpdJelo64gBWbTDhlYVwWeSAZIq KiVjr8RkmXI5VTN2mq8uaoVVpMF5zZjNUwfOGf+dwmPGPdwwJa/JaSJlA+ZhGKix K6xQ3KlfNPIO0ukMjQ/miNNSr1GkJLfyW3lMwYlwv1t0/qZVSubVSEY7GXRbKaOR gVxuldv2hm14o2YxIcNKJfI7caFx97UWU4r63IBEv65wBvxsKKZjwBHuT9w3fQHG RKWoZxgeh9NpJu4RIalJQl//klPHMGZVvvz5+qmJ5Ws94NY7sbCdP4/XQBtHqXSc J/APmqwD7oe5VoDZ9AQQYWf2YvVckClzKANWTz7UqzZEdtzas6+kvxeZdE7DBnq5 d8ToUZnozb2wJgL76U+/0KsCAwEAAQ== -----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 328917505295078709960701010224406769138375 . . . . . . . . [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 2019-08-03 04:36:37 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-01 04:36:37 +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 'www.studi.org' . . . . . . . . [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 808133743118524085200699707528972186274104034632464914584703285594636828257898592965972488725408653006327548220906959799679368345827552847072375983068102307016281377981139551813597514632336768249105817088002586146875956815804434749113593112130883890647061236368653003496267170123493244938194053386289350769682064254115525521056926487278314825543054854774186330461000715292830160929703353243550388547047820528632387532453160125820608400245953612349396634813607942002479911754226434306046714515622861579845817560666885979929532350477204190640218841815858956187507672003418361245613159609899670115951127567575902200324821897887141830079249995812117155049454587202411830110458065488591511034642776676545815560103454817032443569720201873744706881860827960424432904729472933925990311021646541121167830778825787073827366078970738181753074702831392413897318908801596624225867113922802984231912579384302375117316050940818773544520549922236056411309872990028811774938036176621037020307006347058722359620417689954883956728640943480299262848284281655210053608350090145611091176778496770247151775944083517931706863488242598292882227685125708904611342423461563300848438465265078108393549787688902480073322883097551651166001079167880517999610810539 . . . . . . . . . . . . . . . . . . . . [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) 06c6ef79ed37096943622a31920217757d98e4bf . . . . . . . . . . . . . . . . [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 (17 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.studi.org' . . . . . . . . . . . . . . . . [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 (245 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes) 00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016c55fad4f00000040300473045022100b235f8ddf5d2d9b3d17a553be738cb7034cf890f8796ff1abfc438d66bc054af0220563b1c2d24686516c37ac619cdbd2ef454f3904d3403ec934ad4dcb3cd733849007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016c55fad50c00000403004730450220209234c9d35f56c18da7a140c29f6cd0932903bb303cd5c59265f52399f5d38d022100af7c805f3d96f748ebe02d4ad8b58317e5ccb44459ce248a2a873b71f49413c6 . . . . [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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