www.studi.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:0f:16:14:15:41:e3:08:5d:74:cb:05:28:ca:4d:c5:3d:b8 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): 03:0f:16:14:15:41:e3:08:5d:74:cb:05:28:ca:4d:c5:3d:b8Serial Number (int): 266470440592089951187661569441675067342264
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: fe:0e:6f:57:06:d7:f4:25:ee:57:2a:15:9f:21:f7:8b:dc:41:77:13
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 56:b7:25:19:6d:56:2d:dc:34:57:e0:23:31:c1:c1:e0:e7:28:8e:82
Fingerprint (sha256): 1d:1b:50:d4:4f:98:53:14:da:94:f5:e9:78:da:a2:fd:90:26:ca:68:c1:1e:a2:75:69:06:5c:36:d2:35:ab:21
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----- MIIGUjCCBTqgAwIBAgISAw8WFBVB4whddMsFKMpNxT24MA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEwMDgyMDIyMDhaFw0y MDAxMDYyMDIyMDhaMBgxFjAUBgNVBAMTDXd3dy5zdHVkaS5vcmcwggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQDCPg3GcsRwQw0GZh/D6oRqIwqrgbEudmlh TTrCEIFciQ+EF4F3rmgBPFj5ObMHGrhiPQqB4pvI6dVSXs9/aLOrlWbaHrIkPD2A zxd+cDJtOXMDdVZ6pJ5wYFE4uNHjsyy3BRp5ZfYecUeunGroyVqkkyDywMtXlsVz zTX6B6G2D1kpO6VBFnW81+msL5+EdUV6H9bL6t9m/y6eyTBJGamQbqWGz3nCc0Xt OSn+2xeMsBAuQjdiyHcQaB9m3Z9ISCMMWdqIEnvBR70cPYYmsbmkvMKvTyFy8zp6 XgzAWViZq2fcrKPheC/6G49ZOsLGT0BXcRnaAFDQTmL1OMvH4R03Py6tj/cZ5dm8 fysBsjZROkObaLLUq/gxYfmRi9v1IbVkLOkV5VyP12azjzuZbN+A9zuu42SvDj0u KqdTtcLIDWVVtwwAQR7yGbM1xfaJRY5b3fdKUrHFifL+GmbwhHYlqi08r4MzmkBM NGuNg0pedbe9veXKU7XWwIKrrGmcdv/9v5McmVKZe/JKxftpV1FZPD1yXethQRN0 raRT1Cx2A9XXSGZj3j6pHiPYh+5A/MMfoGSSA4A2g3eBR791Y2paBipBgu4PC6Ao QgKxBI6blQqMJzJoYgcSg0oEtWpbfJBBc9c/m0qK12Q8ShdrXxxsnuFDtykHhyPP eawN+LrVlQIDAQABo4ICYjCCAl4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBT+Dm9X Btf0Je5XKhWfIfeL3EF3EzAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14 My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14 My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5zdHVkaS5vcmcwTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQCBIH1BIHy APAAdQApPFGWVMg5ZbqqUPxYB9S3b79Yeily3KTDDPTlRUf0eAAAAW2tQDB+AAAE AwBGMEQCIBeOVJwLwl8G7WJ+4Dr7/0gwsjExLMKAXTXS76MHNkDjAiA99DUiDAMj 3honkwwlED6IgA4BA+zRP8MEIvuasFBdKgB3AG9Tdqwx8DEZ2JkApFEV/3cVHBHZ AsEAKQaNsgiaN9kTAAABba1AMKwAAAQDAEgwRgIhAKfdj7wulJENP0ZxeMMiBMGj jiKqyR5X7Bz+WkTC0667AiEA7Z1xExKamPzhwd4BAuju4HXlBUmvSWBHV1E9EYoR NfwwDQYJKoZIhvcNAQELBQADggEBAAHTNzAD69fQkmm2jA5yQTfNKc6GB1stE1c7 pdRLjmXcQ07pnr31Y/3nJtEmbInM5jxE1e5GY9PhMTp1HBXiPOQcAHm7YinxWJTA Jv2xJGNb/plMAtKWfjGBblb277r+Nxr28KVZ0Nk0/sKn6xSsT/Zv+bjisBvka89s L0pnXLQqMbjoMbKH1xEm9O7yjMtNejJg99yUcGhYd06cdv955l8P1MHPKaVwtiUq oHwPm5y1SDfOXy7EyE4CrmvXolzJ4lEvhthqnHxrmiqkbMenDVipVlH962cVA7Iz FtlpQqX/CcbGIGMUhOIB16tH5k645hPYKKEkFnBrYNO5hv2H0jQ= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAwj4NxnLEcEMNBmYfw+qE aiMKq4GxLnZpYU06whCBXIkPhBeBd65oATxY+TmzBxq4Yj0KgeKbyOnVUl7Pf2iz q5Vm2h6yJDw9gM8XfnAybTlzA3VWeqSecGBROLjR47MstwUaeWX2HnFHrpxq6Mla pJMg8sDLV5bFc801+gehtg9ZKTulQRZ1vNfprC+fhHVFeh/Wy+rfZv8unskwSRmp kG6lhs95wnNF7Tkp/tsXjLAQLkI3Ysh3EGgfZt2fSEgjDFnaiBJ7wUe9HD2GJrG5 pLzCr08hcvM6el4MwFlYmatn3Kyj4Xgv+huPWTrCxk9AV3EZ2gBQ0E5i9TjLx+Ed Nz8urY/3GeXZvH8rAbI2UTpDm2iy1Kv4MWH5kYvb9SG1ZCzpFeVcj9dms487mWzf gPc7ruNkrw49LiqnU7XCyA1lVbcMAEEe8hmzNcX2iUWOW933SlKxxYny/hpm8IR2 JaotPK+DM5pATDRrjYNKXnW3vb3lylO11sCCq6xpnHb//b+THJlSmXvySsX7aVdR WTw9cl3rYUETdK2kU9QsdgPV10hmY94+qR4j2IfuQPzDH6BkkgOANoN3gUe/dWNq WgYqQYLuDwugKEICsQSOm5UKjCcyaGIHEoNKBLVqW3yQQXPXP5tKitdkPEoXa18c bJ7hQ7cpB4cjz3msDfi61ZUCAwEAAQ== -----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 266470440592089951187661569441675067342264 . . . . . . . . [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 2019-10-08 20:22:08 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-06 20:22:08 +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 792439845505025186325811654690131716670689394713961093194942498164951693514623393534764904740447978161792463503831812806334982784477561481544661578549648578274183859700618995425360375996506660340749711117683295833312410753738368426305136126867963851451007533817671680744806246758586123140818030417711983515504696149579565839628804569613715051767297565457436068327047040368237552522233741379769024857013806758304994695419760360537446946736249976003693943173635741960810151390954174119543639579217629483639883236482991364857214703879961571180231618195468559349478236362377664865087572395343825364082384792636190236039334912427297466139037987700306472911298560450681187335253741384974500909970266961483434021318342027264737990647037594428474870706186872690752178911018809542738637474036577264061663004115607283630771824245772015163792165555966797848574186969131512911929796179007444686364349113896986812229853890607085270495323185299038459527912540889149411627190669187384166266541752096180668270396268062497841528709704737746356665414803463169908483654860503472785131100700504125382830408117718914289933329311480088161738514570504473016957120376954191235761695609186471130197704593356251672607866139936051661378047554662265421456659861 . . . . . . . . . . . . . . . . . . . . [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) fe0e6f5706d7f425ee572a159f21f78bdc417713 . . . . . . . . . . . . . . . . [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) 00f0007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016dad40307e00000403004630440220178e549c0bc25f06ed627ee03afbff4830b231312cc2805d35d2efa3073640e302203df435220c0323de1a27930c25103e88800e0103ecd13fc30422fb9ab0505d2a0077006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016dad4030ac0000040300483046022100a7dd8fbc2e94910d3f467178c32204c1a38e22aac91e57ec1cfe5a44c2d3aebb022100ed9d7113129a98fce1c1de0102e8eee075e50549af49604757513d118a1135fc . . . . [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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