studi.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:9e:1e:da:21:ca:16:b0:15:8b:ee:61:b7:f4:ac:83:0a:d6 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): 04:9e:1e:da:21:ca:16:b0:15:8b:ee:61:b7:f4:ac:83:0a:d6
Serial Number (int): 402254767146468599173616732573983509252822
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 63:5d:a0:4c:c7:c7:fc:1e:e1:b3:71:81:1b:3b:a4:dd:0b:c3:4d:1e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 28:fa:26:b6:95:b6:e9:52:0a:89:5c:55:55:30:aa:1a:c5:3d:61:5a
Fingerprint (sha256): 9e:50:a0:86:76:c2:c8:58:ec:87:d6:00:bd:34:8c:4e:46:fc:df:b1:76:71:ea:6d:4c:bc:56:5b:83:52:c5:b3

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 402254767146468599173616732573983509252822
 . . . . . . . . [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 2020-04-12 23:04:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-07-11 23:04:00 +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 818057929567659177153035314426165627678432661452159006242544112348040096269352854836601114049761145337383739438097216985193830146606346364121920532693993988688784053966174605704628580953380753732374129343363347447526013740002642055999299295917825389752771091552013826557118535256932563413945893675967385924517893265513276557861950346144352832046947238675922739033256568729143831995398258890598975148651882042946730226564136972370835349853548219791461802043563609385425175898946311002870722507419141561342247566063653890402800607673226600037203276128203518884061972128373686025763831866556668359291878649247975238629819827410365094189561514123499847614709192886482796272550472492694950455572362991571625677903003074456219333049280376704085076062879277187505366023221409423384358139365565862456834377986760714376425027012981550371802071801781424545670599541754261454231093230866728999517495817470472909820000023426516711836209905738871072158831387096396301479014877078316263324059063338105453471219207470945689426749050326016912651361422278133823933185335426209290583413856273545093260483231450574759091993502274882811503793228182830948841475048197918410584847852347934641518582705364371942213171576677812741367301262207103468894851661
 . . . . . . . . . . . . . . . . . . . . [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)
							635da04cc7c7fc1ee1b371811b3ba4dd0bc34d1e
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000017170d998c300000403004830460221008c6d4d6ede6bcb567d13285a2947a8b90b16e90f5f3ec306bc2ca565c1abb525022100decba9056c2385999fe8cd1d8883095f5a8b7c7d39f2f9c33dc8e6e9b9c65433007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000017170d998ad0000040300463044022037f469a6fa590536299585527ecf2ea60fd07d8ac41825fcd64641ce458c96fc022004185d41322a8fae4d52736a62e9fc885eb6dc4639712c948648e5c62518c64c
 . . . . [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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