studi.org
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:cd:a4:05:08:5e:8e:13:98:d2:ef:5d:ae:7f:c1:fc:7b:a6 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=studi.org
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:cd:a4:05:08:5e:8e:13:98:d2:ef:5d:ae:7f:c1:fc:7b:a6Serial Number (int): 418425048468377085142011944132771850255270
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 41:d5:43:e8:29:da:41:d5:42:41:f4:4b:f5:da:60:e6:05:06:0f:0e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 8a:64:25:67:33:e7:bf:2c:02:b5:ad:c4:a0:41:e0:6b:45:6a:ea:ef
Fingerprint (sha256): 94:ce:7b:de:3f:e3:3b:03:86:ea:48:2d:8e:72:00:b7:a6:84:b7:35:aa:46:59:33:ac:ae:f4:db:d2:3a:ea:15
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate studi.org
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for 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
studi.org
Other certificates including the domain name studi.org
(limited to 100 certificates)
Certificate
The complete raw certificate details for studi.org in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGTDCCBTSgAwIBAgISBM2kBQhejhOY0u9drn/B/HumMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTEyMDgwNjU1NTBaFw0y MDAzMDcwNjU1NTBaMBQxEjAQBgNVBAMTCXN0dWRpLm9yZzCCAiIwDQYJKoZIhvcN AQEBBQADggIPADCCAgoCggIBALu3OeZMlrXu6IwEywCUW34yVMRJZivvrS+yvRbI zZg5Cap4zNtG1xfBrjd/mbaQU5yL64U6JQJuSmIAwtoWHDkZSAm/v57lHiZlSsfE JpUo2uTXQm432EEvX9fCHC65PhKVEI+6lJLMTYFGq0n49J2pgwsaUln4cGZ9y1Fj I7TfSEMqlhcnl8Ewnyh6OSunaEPlOEjuISZ8kB6ZHjJz3Jn9qQXbP239SMIf96fe OjYkUOJNRsWGj7po0KdSeydDgmJgY8lslIc+DM2rLppC1tYATWC9sm5rAj8r7CeZ rfYGtszGZv65/wjf3vaBYscRvGOwPaH/1Jr6AjJeGQKzt2X1MXPWpVgVaBxJjV4T EtliWR5J0NaXHf4DlDtR0xIKjj7JG0rBrDYJJFMwh+mmzN5ubgct3CGdrWdJ3cL5 biv3PWQ+twwNqODhwdo6lk11kA8ZuxhQO4ue7LX0GyRa57SpwQQiEjiv02aTaEjf s8IzyvrbGWhaXzDGq32F+i+OPfts7uEnl9gK98YUvNkLcq2O4bHNlv95qyReLqTv CfZJS5v1bWN0jf764jvJ4t7+oKJwimhppk6zycNQoBqTfJ7nXGfdRrYNIuQu2CLF iUXeKwccY5SOqR5h0dsD1w+YkErOrrr/L1oIbrlAnf7KDD7clY7e1xAqSyJKpZZS Ot2fAgMBAAGjggJgMIICXDAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYB BQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFEHVQ+gp2kHV QkH0S/XaYOYFBg8OMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8G CCsGAQUFBwEBBGMwYTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxl dHNlbmNyeXB0Lm9yZy8wFAYDVR0RBA0wC4IJc3R1ZGkub3JnMEwGA1UdIARFMEMw CAYGZ4EMAQIBMDcGCysGAQQBgt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9j cHMubGV0c2VuY3J5cHQub3JnMIIBBgYKKwYBBAHWeQIEAgSB9wSB9ADyAHcA8JWk WfIA0YJAEC0vk4iOrUv+HUfjmeHQNKawqKqOsnMAAAFu5IHsCwAABAMASDBGAiEA +O9AdMPJYVznWGCi+hmY/AyAduEVjgSZOdoGC3DUBX4CIQDogQEMrMQfce89Nky0 cWC61fdZhsU378o4l9kb/zOBSAB3ALIeBcyLos2KIE6HZvkruYolIGdr2vpw57JJ Uy3vi5BeAAABbuSB6/QAAAQDAEgwRgIhAK+QDiaTv5FO1KQacFfXB8+3K+l5Bftd +JqJ22iI9JyJAiEAjranm61vTJ+cM3vq0mZIw6RVVbYrri5vx4YDWFrMpigwDQYJ KoZIhvcNAQELBQADggEBACrtbqYeUshJHoFkvL5JhsVEe2CPbVXzhQIFlGFxkxf6 WFl4wMdmAsB1E+ZvxLLhPI+lOJFqWoR93FtJeTqlWgKHYrTWhpnQBP/9vS7F+iUb zqPR9oORyEk48HeSZmsUOgx3n8HaoU8pFYP0KRO7r5hsZJlj/gKWi+RjlB0sIgOY l7WLNqMzw+lo57QPwIwPIjbWKI+Eh+q/SpAO6t9yd/weXYpaK0FysvOYHgW6vVRq OUJOcFAEODKtgaqIMTFRUPpXZ9g2dsQkbAx29Yj/9AJ1ypxOBCHeRThaYof8SlR8 +0Ru1KW9wbP1o14c1uRAptKLnHoaNnHHv79hcDMi0mQ= -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAu7c55kyWte7ojATLAJRb fjJUxElmK++tL7K9FsjNmDkJqnjM20bXF8GuN3+ZtpBTnIvrhTolAm5KYgDC2hYc ORlICb+/nuUeJmVKx8QmlSja5NdCbjfYQS9f18IcLrk+EpUQj7qUksxNgUarSfj0 namDCxpSWfhwZn3LUWMjtN9IQyqWFyeXwTCfKHo5K6doQ+U4SO4hJnyQHpkeMnPc mf2pBds/bf1Iwh/3p946NiRQ4k1GxYaPumjQp1J7J0OCYmBjyWyUhz4MzasumkLW 1gBNYL2ybmsCPyvsJ5mt9ga2zMZm/rn/CN/e9oFixxG8Y7A9of/UmvoCMl4ZArO3 ZfUxc9alWBVoHEmNXhMS2WJZHknQ1pcd/gOUO1HTEgqOPskbSsGsNgkkUzCH6abM 3m5uBy3cIZ2tZ0ndwvluK/c9ZD63DA2o4OHB2jqWTXWQDxm7GFA7i57stfQbJFrn tKnBBCISOK/TZpNoSN+zwjPK+tsZaFpfMMarfYX6L449+2zu4SeX2Ar3xhS82Qty rY7hsc2W/3mrJF4upO8J9klLm/VtY3SN/vriO8ni3v6gonCKaGmmTrPJw1CgGpN8 nudcZ91Gtg0i5C7YIsWJRd4rBxxjlI6pHmHR2wPXD5iQSs6uuv8vWghuuUCd/soM PtyVjt7XECpLIkqlllI63Z8CAwEAAQ== -----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 418425048468377085142011944132771850255270 . . . . . . . . [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 2019-12-08 06:55:50 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-07 06:55:50 +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 '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 765813353059292883915290344282713060020245713762440358906523806346067240692869552002714489147800748605232098522964170307934596623415683042419237632044515549488674412819697026830345090997477423644427665209350732656246460263099631798703255698405896985607076054230079645438228191030718018697872242627966581086903114489440780472664422020260335763150961208658624413197870831278401531013475564437546887310253720941503691315758973133959520053938364796301857817944682574859145161520278875256503938091382736273385367982815567509615278685909002438517695935215172346816740339710698538715157817101123821498229682848545948901157554226644469349319825824958519292382236579102398656463714478973663435641377775169880082740688821495240319032475538566815971999066649200352438496452782927084749328696112099795582507562583666996449535981431052891555567684454949419415935490739149212999717823286589526893255692063705305634196385217146364525008134504776676200236649635098752630948781682943132727866619360274544005332625959249515718635819798406106314199886595759314560744821607714732134725636045724767965110583701024000036356870841842889754169446976145323239626940929636994828608950391626108323797200761244685923210712021431146063187777288853414095273778591 . . . . . . . . . . . . . . . . . . . . [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) 41d543e829da41d54241f44bf5da60e605060f0e . . . . . . . . . . . . . . . . [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 (13 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '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 (247 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) 00f2007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016ee481ec0b0000040300483046022100f8ef4074c3c9615ce75860a2fa1998fc0c8076e1158e049939da060b70d4057e022100e881010cacc41f71ef3d364cb47160bad5f75986c537efca3897d91bff338148007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016ee481ebf40000040300483046022100af900e2693bf914ed4a41a7057d707cfb72be97905fb5df89a89db6888f49c890221008eb6a79bad6f4c9f9c337bead26648c3a45555b62bae2e6fc78603585acca628 . . . . [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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