fastai.dev

Issued by R3

About this certificate

This digital certificate with serial number 04:c8:ef:8c:45:f5:b4:98:ed:13:b5:2d:56:d3:26:51:ab:ec was issued on by Let's Encrypt.

This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=fastai.dev

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 04:c8:ef:8c:45:f5:b4:98:ed:13:b5:2d:56:d3:26:51:ab:ec
Serial Number (int): 416824030942734523694679368916027101522924
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: d0:0a:fe:51:70:24:81:11:e3:fd:67:18:31:c7:9e:18:23:35:d0:dd
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ef:0c:86:28:ad:36:97:89:4a:32:cf:10:8a:e5:85:e7:41:1e:d4:20
Fingerprint (sha256): 92:4d:c7:79:23:9c:d6:8d:6e:7c:fd:0c:82:f8:85:00:b5:b0:33:85:a3:3d:11:17:ff:c1:ff:3b:f9:46:cc:9a

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate fastai.dev

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for fastai.dev

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

fastai.dev

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Certificate

The complete raw certificate details for fastai.dev 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 416824030942734523694679368916027101522924
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-03 14:39:49 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-02 14:39:48 +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 'fastai.dev'
 . . . . . . . . [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 694831299019337836463280388124429698195390200084929030917412318992996666915454016918360965878193032169114566051851452696241312754658798546341909335128931519633504474657464192673833135332943444657926943633891061883765754107954684958999862062837587366282602946526268855250488602337781078762610591353168708447179992066886139210346280003892302243070411619021027527940816599089380046686270309371263581029404800714274394761728572912011721673931940092998979048532509654873699683659619492325890118836203369705870597364080066355522453462404235508751507133554467165307100174469532788644951917701909578610358636845102194692951211149957826484221256039708041178614672646892977098852669548199884974258427240666189925045928776096872227733785956450657471624367291823648336901177965666329607654277009315383988767155188971354836639799920549287795799929242234407088337760457756374765835874382092079052297011363900373025127168720933730628858332338071760806173505155405551092388258648533776536290497132362008369156050067140830843798438657537962782937464060563899962355806993014326980608749850492486965618143219416364501871435479510649937537595829310158867597968592310678689866584067529739643674048042750084591394883456212730203568173344955031926231401547
 . . . . . . . . . . . . . . . . . . . . [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)
							d00afe5170248111e3fd671831c79e182335d0dd
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (14 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'fastai.dev'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018ea49dceb5000004030046304402200496d98be5735f829c8425321d9fcd5f08962d219a34d787c97d8af6ffa1607c0220225a995c95869f25cc3f930e6d8860dabebd10c58a519fb9ea1edf18994bf3ec0076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018ea49dceb300000403004730450220542c859a9502b27e15ecfccc7803df5501a2e23d5440d74608fbe08651408769022100dfbe6b56236e94453b602a377c32921fec23318d86092a56382c5483b8c46ac3
 . . . . [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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