www.studi.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:c5:e9:0e:23:6b:1b:57:24:fd:5b:4d:f3:fb:06:55:a0:3d 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:c5:e9:0e:23:6b:1b:57:24:fd:5b:4d:f3:fb:06:55:a0:3dSerial Number (int): 328682267612249733091454913210752890675261
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: b0:7c:64:cd:fe:70:14:35:4f:09:9b:6b:28:de:97:da:41:bf:0a:b5
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 13:41:61:23:fe:24:f4:4c:f4:84:f2:c0:e5:cc:3e:83:55:1b:d4:fc
Fingerprint (sha256): 41:7c:09:87:65:01:c5:da:f3:a2:b5:d7:ce:e6:39:f7:23:62:73:f4:78:09:d2:7e:1d:df:43:1b:30:83:9e:50
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----- MIIGUjCCBTqgAwIBAgISA8XpDiNrG1ck/VtN8/sGVaA9MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA1MjUxNjQ2MzBaFw0x OTA4MjMxNjQ2MzBaMBgxFjAUBgNVBAMTDXd3dy5zdHVkaS5vcmcwggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQCdi2nM+evBhXBgttBZ3qBffVdO60rUlULf PFqyPtTbWUBkyKsz4xcGkd9g3eo5JS8VW+8wvsTevssZy+ngRURQ9P/8EjKwRDUk BZ0OcCsyDLimqJCH0TE75zzIfLjhMHuG+WRupU4M8F52fE1oLn3Hue50WBMwZhpG 1InoWQ2bLHRIz0afF1EyvrtcnWD4Cg0d7y/bHMuKvdbTJE9l/GM91RmCF+JOjNpI Im286GjXMV8PvEUgk5GtNStRZCSS/VgtQTVoUGE8Xq9aQeE3QdzwQkZB0P9Y1vtW 8iF83dDcRGEd4LTKHV/cQ9oGswTr1Wq89zbiaZWu4hcYgKfh1mBbUj7nofyvHfL5 bx4Nkj288BK1hIV4/+u2jVhwd+BEc0CMdDU52ot85zMeBVeU4k1fSQfLZTH5Xr1d wzKk+ZzZVTojLscqXUWUzm4mBesCAdFI8CQ0iyps6Lq1W+D6rV46EKDKhkFcTehA zRURWezWkEz5tntv8gAcC+he6zwBSkTmF7BEFUCcMWISi4szKUjq3uyFkQgYjaHl fkPwFNV8E88mgramLhwtfmi5mQPVts4JeHwllAUba5nMyBB2bQbsPvPo4VajZnFW +idEsBYWP0r//MeEeY2EK26Kz5J/OANqQpvok1C6451jlIy2P+uRSiEn1GMQnVa+ k2y6YRXoCQIDAQABo4ICYjCCAl4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBSwfGTN /nAUNU8Jm2so3pfaQb8KtTAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14 My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14 My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5zdHVkaS5vcmcwTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQCBIH1BIHy APAAdQB0ftqDMa0zEJEhnM4lT0Jwwr/9XkIgCMY3NXnmEHvMVgAAAWrwGehNAAAE AwBGMEQCIAs1NrObTFsrBd8/p6QbwhgXs1Dnzlg2hUwwfRLC9egdAiAq2hzPVmcK Q+0VixTm4/aL6pt8ikSYEjsbNGM2uCKiygB3AGPy283oO8wszwtyhCdXazOkjWF3 j711pjixx2hUS9iNAAABavAZ6DsAAAQDAEgwRgIhAMmfc95nonQfokZ1fk/T8Bym 2RmfsBcINmDSMG4kmEX+AiEAstqsx6vfA24yDjhaL9na/CEPA9026HMBAEpfeewz YLQwDQYJKoZIhvcNAQELBQADggEBADoPrdXDEKRh0RacE8yu+aF4eTG6s3xAsXfI 8jYTzqyfbJGR6/pF8xcqUultXeZ2ZezuraGzHeXIMafTLX+3ZPC/yeUgRVkEvKTA CLZxhQCT42qqtZ/tfqtTRFxF0DxrcA1OBgoHsDeeAVBtLwRJMxEGKLmdD+1qcXXZ tMhuA8OqvjqVkWEqrtiwmd11oYZbHShtcqsI3eB5h0i9PLL6mxYtEG62D+znSNRC 3lzRkzWFIBeW3Zgi6h8Lk4bJ47ViEPvCUecMJwwhUmdcHWFrniPCuNgbw325h+gn fWST+QSCCYaoZmkRxANpYPvORIlEVBBVOzSdLPXeWUsYV2gPT2w= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAnYtpzPnrwYVwYLbQWd6g X31XTutK1JVC3zxasj7U21lAZMirM+MXBpHfYN3qOSUvFVvvML7E3r7LGcvp4EVE UPT//BIysEQ1JAWdDnArMgy4pqiQh9ExO+c8yHy44TB7hvlkbqVODPBednxNaC59 x7nudFgTMGYaRtSJ6FkNmyx0SM9GnxdRMr67XJ1g+AoNHe8v2xzLir3W0yRPZfxj PdUZghfiTozaSCJtvOho1zFfD7xFIJORrTUrUWQkkv1YLUE1aFBhPF6vWkHhN0Hc 8EJGQdD/WNb7VvIhfN3Q3ERhHeC0yh1f3EPaBrME69VqvPc24mmVruIXGICn4dZg W1I+56H8rx3y+W8eDZI9vPAStYSFeP/rto1YcHfgRHNAjHQ1OdqLfOczHgVXlOJN X0kHy2Ux+V69XcMypPmc2VU6Iy7HKl1FlM5uJgXrAgHRSPAkNIsqbOi6tVvg+q1e OhCgyoZBXE3oQM0VEVns1pBM+bZ7b/IAHAvoXus8AUpE5hewRBVAnDFiEouLMylI 6t7shZEIGI2h5X5D8BTVfBPPJoK2pi4cLX5ouZkD1bbOCXh8JZQFG2uZzMgQdm0G 7D7z6OFWo2ZxVvonRLAWFj9K//zHhHmNhCtuis+SfzgDakKb6JNQuuOdY5SMtj/r kUohJ9RjEJ1WvpNsumEV6AkCAwEAAQ== -----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 328682267612249733091454913210752890675261 . . . . . . . . [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 2019-05-25 16:46:30 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-23 16:46:30 +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 642725824057389022431835114872769725681418156724718964769920995192615951006321331824427532062427658502143552626551420658397893077290193533984143450532712609936834632895136306778797122840332354301822372697221710220121399108382153148886727459151361844337473187279337481656881089296510600663321794142389512837079504864409846548760835237470111976026985935964275668446251312674806922559767139104197731294347627245469268633485459956058974585239854619142504575504409681377419473896692081738596901416876625461964930495038386893291449208297554980147527158834757003215239566365633438356247158845860813724517803715418758889910130895426468180005895739607252808909662749483504146974255830148049525330343631063428154379870218353072410018369212557333085516815259443880717616356458808699444200454815636483930168186676980364231810400819972553364625352976516513387731392843118963200766504410010961500977838781685028308671397003403693976030433786314749840638912148957609389954230095992137891543929233641168297140050009222670796580372451264451542333837855961005920064412686217330759742113824632655892282019732099598599173691418681698849618883829413916488700099160872458499685123002088917298640309793240644196564456979234998519494897257465504076496496649 . . . . . . . . . . . . . . . . . . . . [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) b07c64cdfe7014354f099b6b28de97da41bf0ab5 . . . . . . . . . . . . . . . . [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) 00f0007500747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc560000016af019e84d000004030046304402200b3536b39b4c5b2b05df3fa7a41bc21817b350e7ce5836854c307d12c2f5e81d02202ada1ccf56670a43ed158b14e6e3f68bea9b7c8a4498123b1b346336b822a2ca00770063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016af019e83b0000040300483046022100c99f73de67a2741fa246757e4fd3f01ca6d9199fb017083660d2306e249845fe022100b2daacc7abdf036e320e385a2fd9dafc210f03dd36e87301004a5f79ec3360b4 . . . . [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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