clf.clf.academy

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:a8:45:03:c0:f5:44:21:28:4d:ba:89:11:6e:03:d9:b8:ee was issued on by Let's Encrypt.

With 6 subject alternative names this certificate can be used to secure multiple fqdn's. 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=clf.clf.academy

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:a8:45:03:c0:f5:44:21:28:4d:ba:89:11:6e:03:d9:b8:ee
Serial Number (int): 405708317592013012030719663095231121307886
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: c4:64:ad:67:ca:f3:e5:21:f3:aa:7d:db:f8:5b:81:97:53:2f:db:57
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 97:d6:c2:89:1c:70:a6:c3:0c:ed:b8:aa:e1:b0:4f:02:ad:c4:7a:6e
Fingerprint (sha256): 9b:07:3e:96:81:bc:0f:68:d2:28:ad:98:4f:fb:70:42:55:87:c3:31:6e:a9:e0:5a:0b:ca:ba:8c:e9:8c:67:d9

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 clf.clf.academy

6

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for clf.clf.academy

Public Key Algorithm

RSA

Key Size

2048

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

cabotlearningfederation.net
clf.clf.academy
clf.uk
www.cabotlearningfederation.net
www.clf.clf.academy
www.clf.uk

Other certificates including the domain name clf.academy

(limited to 100 certificates)
clf.clf.academy
p16.clf.academy
p16.clf.academy
p16.clf.academy
clf.clf.academy
clf.clf.academy
p16.clf.academy

Certificate

The complete raw certificate details for clf.clf.academy in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtwd/MChOwZtb4za4Ib1T
5/mmd/EFzD1hMhbl3KQdASL6MXQ3EBI49uoFo6gzLaT7vfnFu4chW/RqW1w15Ui8
ESkrZ1RX2tSTT3nwo6hPKVyHOsChrDDYh+Jc5DD81q/HjYGjwXrnQlVDCmkoas5B
eq9hxCcrqDwvs+q6RpXErjOmPrybvMnbdDzfKssDeN5IDGnLNb3iVhszoarz2bUW
QcbAVg0LQQwe+LdL68oAV0+DLtPrBMlUTo353M5IJbXnnEknaiyt0fN7+Tyk6G1Q
oIyWeqm0zJ/WATQyktSv8L1uWbgmrNBwhgo6OSYlcXebB9w67MlyrAPdtLBc4oJf
SQIDAQAB
-----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 405708317592013012030719663095231121307886
 . . . . . . . . [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 2018-11-21 07:37:42 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-02-19 07:37:42 +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 'clf.clf.academy'
 . . . . . . . . [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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 23105306632741278949403244851419455068768915882244249611809657079592487883788469406308775395089529448239936860728527725799498499142851594801625873652746310793544352680126823283677644200084706598888291792865569572172424772387331670937587593368093770249572555642375137163765034952721808578178453074441417769777742314140369344557263958320035402053842294477327089539877378994403916020577993036174536691386577688813482866689478599417372201598483953551251087066439491953311801582955789454095304969129265761147596853393821819997562344728572685946893734696238639754482501365552133468072820368393445760848578016155923223043913
 . . . . . . . . . . . . . . . . . . . . [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)
							c464ad67caf3e521f3aa7ddbf85b8197532fdb57
 . . . . . . . . . . . . . . . . [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 (122 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cabotlearningfederation.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'clf.clf.academy'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'clf.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.cabotlearningfederation.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.clf.clf.academy'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.clf.uk'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10077005581d4c2169036014aea0b9b573c53f0c0e43878702508172fa3aa1d0713d30c00000167356afa770000040300483046022100d164a6db9a5ed870242b5dda8f2ab1f68d0cefa73bf03686b41a39e0bfa091f3022100f0308d7dfb0d101747b0c4456486da98c5af346aa8cfdab062f8c3922da1acc8007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000167356af9970000040300473045022065a5c0acb4003fbc4335d2f68b6f4066ef56603f70ed2c956f3e6f1de93a80d4022100ccaf1843cdba67ae6083fbe2b35a421d94f05344530eafcea2ba4e602993b30e
 . . . . [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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