www.f3.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:78:27:25:2c:31:7f:d6:eb:1f:ca:de:8a:3a:f9:31:d8:c2 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.f3.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:78:27:25:2c:31:7f:d6:eb:1f:ca:de:8a:3a:f9:31:d8:c2
Serial Number (int): 302222774728960500003729905867337436879042
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: ed:73:56:25:96:48:96:fc:d3:dc:8f:5c:ca:4a:2e:8a:b9:ba:52:62
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 75:90:1b:eb:91:a8:eb:87:83:9d:0e:a4:4d:85:b3:f0:ea:ae:9f:ef
Fingerprint (sha256): 47:31:c4:33:cc:29:a5:d9:1b:60:13:81:06:d0:6c:6b:5b:2d:a9:60:06:65:18:d4:07:cc:06:e2:17:b9:54:d6

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 www.f3.org

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.f3.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.f3.org

Other certificates including the domain name f3.org

(limited to 100 certificates)
f3.org
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www.f3.org
www.f3.org
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f3.org
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f3.org
f3.org
www.f3.org
www.f3.org
f3.org
f3.org
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f3.org
petfood.organic
blockchainbrains.ca
f3.org

Certificate

The complete raw certificate details for www.f3.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 302222774728960500003729905867337436879042
 . . . . . . . . [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 2019-12-09 13:21:56 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-08 13:21:56 +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.f3.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 868138581895288479695759766898126140712839636800884590662907145538696293648700416889626523879826088597794635373146998475051602656965405854678888242924285058926477245689206406892188371232001585278671908953653410467121493741352072328374634567662448571112675829751565831662418659861606646011293623376029828688953542016930696886899657925510684584664667684530151447891605035992154661337174958354336078822202789772176563424326420104809577163182649049183747617648314882378687726973160260058627916970858713893209284243411957220863546827978912787126134912231218433059836377385661054339378518949266100074248481899905617405520849435694461759669240405594888249555670651652341819834988426102174530196780295585524794781213962604287249310569693008598587052073802063455865510779756393547267938440754725655162572627355169514507868756223250962614970370741638860214155755485991539114192354787186507736868219917134753995419956270058995444380856787854923537324722068923370364588788698544928983536878366285395813878278231662189616515522390248118290057397780911965742050107740417898407031024124911671891273702099362649319624526372761388049420967669068657397616796340327659161227605853570279196216942672933927520260452419035974419736292403340932920514255603
 . . . . . . . . . . . . . . . . . . . . [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)
							ed735625964896fcd3dc8f5cca4a2e8ab9ba5262
 . . . . . . . . . . . . . . . . [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 (14 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.f3.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016eeb09c4600000040300463044022073e12886b05c4a9a7f4454ef4512b4f327ad7558009f11ef1d0d6a13061b61e00220316ee95980c1eeb8268a92bded4e5961cc485d6920fab86329884239c63f36210076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016eeb09c497000004030047304502205d7df43dbca98b60548669e27b133a1d86154aa96b69ac9dfe0811590b238344022100f554ab1eab3145ae30b0e5709804400dfa8925035c133bffe95edac98e8fa47b
 . . . . [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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