www.studi.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:e0:ff:89:84:9f:7b:2e:05:6d:0e:b7:09:d4:ad:7f:51:56 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:e0:ff:89:84:9f:7b:2e:05:6d:0e:b7:09:d4:ad:7f:51:56Serial Number (int): 337899775159079196388851031250917383950678
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: aa:c5:6e:2d:90:a1:74:6d:61:2d:b7:58:e3:2e:27:cc:ef:7b:c0:0d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 26:80:ec:d0:ef:98:95:19:55:bf:b4:b7:bf:91:16:4e:eb:58:45:d9
Fingerprint (sha256): 8d:46:3f:4f:22:7e:04:e2:08:ec:d7:a3:75:e0:48:f4:2e:08:72:c7:be:0e:be:cb:98:4f:f9:09:6b:bf:f5:55
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----- MIIGUjCCBTqgAwIBAgISA+D/iYSfey4FbQ63CdStf1FWMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAyMTEwNjQ1MjdaFw0y MDA1MTEwNjQ1MjdaMBgxFjAUBgNVBAMTDXd3dy5zdHVkaS5vcmcwggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQDkP/ESRb9RoA6Mq9WQMYl7d5G3AZh/Q2o8 6lEqIw3vwjjQxt6+tTewAVMtgizsV2ww/FJf0BcPQ6mWh0qMitGBsrmX7UNsAoMW dvFOvNgA/6j2xPvicla2Ez6j8nrWhCPFWElY650ttr2EGhWcAGpLG+8OYRf9DFOL wWHFK3pSsNPkrPiwciPDRv2kdeoDE21UUxtuQ7QDZ+3ce4973eKIN+gvBcFf72yo S3N8CiRpkcCKqdqyvt2ggwVEXpusjkz2W9b/kvEmqIfRGRrB8Cfi9pxpnM9kSmke JctzF+0umSGM2+tSniWjr/Jx4k8ZGg/1o+gow2uXp+iJnGbKxjtxKJo1u3X9H6sq yiBVt/QLf4PEkVA3N487ns/EzD23MhJ5ICv94D0Ct6hYJBsQcJ6lUnC8bh4kibF1 flykL6N1Ckuzs+HNV8Uo2JbBCyPDWDNO68BrbJERwiN//enzKwM7WSCd6qqRK21x AhlFNRYKcNPRL+KJq4tpIgBNGLWYKtJHVycz4bNWW+XBKjPH515jf8OE/o6BEOm3 +KLvY5Jbwhg94NnQgPGUrfLRqRrrgF9vABc4UVKItyQE+nbnKWq5taDJvVCpIoFP IZr0U/OQXUb7mQwoMEqRW+aNxh//ajr8qDn8pdqKx79NDjQE2YaRohwTkvGVSGDG febFGqntjwIDAQABo4ICYjCCAl4wDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBSqxW4t kKF0bWEtt1jjLifM73vADTAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86js oTBvBggrBgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14 My5sZXRzZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14 My5sZXRzZW5jcnlwdC5vcmcvMBgGA1UdEQQRMA+CDXd3dy5zdHVkaS5vcmcwTAYD VR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcCARYa aHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEEBgorBgEEAdZ5AgQCBIH1BIHy APAAdgAHt1wb5X1o//Gwxh0jFce65ld8V5S3au68YToaadOiHAAAAXAzNcejAAAE AwBHMEUCIFlFg0UIY4Gp8Bof1MxwEbNm+crCxrtXAiCbEI7n6tC4AiEAvzJlo++4 IA2ouDX1Bf0DypdL/cuHBsXNYmsHNus7Ni8AdgDwlaRZ8gDRgkAQLS+TiI6tS/4d R+OZ4dA0prCoqo6ycwAAAXAzNclZAAAEAwBHMEUCIDa2jYd+5EYo2N8QY7G6kiba zo6U6Si2ETdDHJSGuPGoAiEAwWMzzlmVtwpAX2L8d6DmnS3rdBBZ7PBpyK6yYyN2 cMowDQYJKoZIhvcNAQELBQADggEBADeS2XfgHw8+ljfOE0mRLFeocG1XM9+f9WtY tAYceDezBjODB3bmh35uae1Bnw72P4G11Z9HoEUpZGPIzas5rZ0kPFou3KaiJd4T jDAswH/IRXiCPiNol1vVqjsJkZVm7fr+f2yaVJ1MeDueALyUszLI1c90FeV/Xuis 1ALcupXIRtvBNe6b0Y+T/9XDGOnVaPFDSPtDFbBL2tOOJij+tBBVzBPYaOqYA5y9 Mzylc6gUQ8YwFQqPdRSpS0EMh/Cc44v1eycw/7gRmPEE66p+vJM+HKGNQOxenYwe IZ2EilqGTMf8qw1qf4qgSddsSvPhhG0fxGyTV5vw9AT2+uORXqE= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA5D/xEkW/UaAOjKvVkDGJ e3eRtwGYf0NqPOpRKiMN78I40MbevrU3sAFTLYIs7FdsMPxSX9AXD0OplodKjIrR gbK5l+1DbAKDFnbxTrzYAP+o9sT74nJWthM+o/J61oQjxVhJWOudLba9hBoVnABq SxvvDmEX/QxTi8FhxSt6UrDT5Kz4sHIjw0b9pHXqAxNtVFMbbkO0A2ft3HuPe93i iDfoLwXBX+9sqEtzfAokaZHAiqnasr7doIMFRF6brI5M9lvW/5LxJqiH0RkawfAn 4vacaZzPZEppHiXLcxftLpkhjNvrUp4lo6/yceJPGRoP9aPoKMNrl6foiZxmysY7 cSiaNbt1/R+rKsogVbf0C3+DxJFQNzePO57PxMw9tzISeSAr/eA9AreoWCQbEHCe pVJwvG4eJImxdX5cpC+jdQpLs7PhzVfFKNiWwQsjw1gzTuvAa2yREcIjf/3p8ysD O1kgneqqkSttcQIZRTUWCnDT0S/iiauLaSIATRi1mCrSR1cnM+GzVlvlwSozx+de Y3/DhP6OgRDpt/ii72OSW8IYPeDZ0IDxlK3y0aka64BfbwAXOFFSiLckBPp25ylq ubWgyb1QqSKBTyGa9FPzkF1G+5kMKDBKkVvmjcYf/2o6/Kg5/KXaise/TQ40BNmG kaIcE5LxlUhgxn3mxRqp7Y8CAwEAAQ== -----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 337899775159079196388851031250917383950678 . . . . . . . . [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 2020-02-11 06:45:27 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-11 06:45:27 +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 931177829212403598661531267208200811098053018813295659787728612419464648477355727528919269672004054574843777534370333581408664036524042304703262235720658766023900511821260253342929195717917498405499444439903217971123008954740989488750605276901624632978778280336190684155460952086627942923771810275250168166473637282672115383531025943433756558911088747021806563994609255718730275618327872561883945227878995743074523559909553074024671918276468739176253413247417436064930166013684584386789757029082337574700444953448745727377543436318584545536245074613459079954977545990348021377968685015398077870629907316260844053791221878897059575197192459949660200138096415936416096909428872263092497746354910946899388076313447465897948695461822438842296764553490247773181152972679849807055616070010316606392281767009033631991634158005661021598125211514551703455822024180970337933965253579516222525442083660081261213157998395131446647487210209893894696601335851532835166814757984795087884512803389666388726071068644243408512357968724218829479456838028290035540813173732734282425493000346366999851546926719091297890828310918101079513910418138752336897295239931219340640278342705982575171182483681398112207665056146699088648462023074044586398717701519 . . . . . . . . . . . . . . . . . . . . [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) aac56e2d90a1746d612db758e32e27ccef7bc00d . . . . . . . . . . . . . . . . [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) 00f000760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c000001703335c7a30000040300473045022059458345086381a9f01a1fd4cc7011b366f9cac2c6bb5702209b108ee7ead0b8022100bf3265a3efb8200da8b835f505fd03ca974bfdcb8706c5cd626b0736eb3b362f007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb273000001703335c9590000040300473045022036b68d877ee44628d8df1063b1ba9226dace8e94e928b61137431c9486b8f1a8022100c16333ce5995b70a405f62fc77a0e69d2deb741059ecf069c8aeb263237670ca . . . . [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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