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:a6
Serial 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.org

Check 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-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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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