www.feet-first.org

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:4d:95:a5:4b:35:35:39:48:7b:da:19:5e:d1:ab:78:df:61 was issued on by Let's Encrypt.

With 3 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=www.feet-first.org

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:4d:95:a5:4b:35:35:39:48:7b:da:19:5e:d1:ab:78:df:61
Serial Number (int): 287737513273942897181891511059037313097569
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 15:7c:66:cd:c6:7e:14:89:25:57:2e:d9:8a:ab:d1:22:af:3d:7b:6e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 79:31:46:7d:0d:ce:09:fc:9b:18:a2:e0:b1:bf:a5:fb:03:4b:75:95
Fingerprint (sha256): 77:69:a7:e4:59:a8:16:61:08:88:b0:00:14:f5:cc:98:74:40:6b:6d:ce:a4:b8:fb:c3:73:11:3a:5a:67:5f:cd

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.feet-first.org

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.feet-first.org

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

feet-first.org
feet-first.pentangle.co.uk
www.feet-first.org

Other certificates including the domain name feet-first.org

(limited to 100 certificates)
www.feet-first.org
www.feet-first.org
feetfirstthame.com
www.feet-first.org
www.feet-first.org
feetfirstthame.com
feet-first.org
feetfirstthame.com
www.feet-first.org
feet-first.org
sni.cloudflaressl.com
www.feet-first.org
www.feet-first.org
feetfirstthame.com
www.feet-first.org
www.feet-first.org
sni.cloudflaressl.com
www.feet-first.org
www.feet-first.org

Certificate

The complete raw certificate details for www.feet-first.org in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5+cb2LulTHhXgkdvjEUC
t2UDtfLoJvG77mq3zEv8GNkMRNXMrE1r2Gwi81Usb+glD3Yhod89EIGjdSYeAbxx
ZvwyjBhsYEv8aUkkA+0aiNzlZfof14Ol9OJwhcw3l/deb4GsFs77YsiLYx1QNKWk
85pMHG0yU8sTtUlmDwqcDNcZBnYVUrT6qd7kQPapHKiEcrfuxHnfCJ8uN1eqM/Di
ERPNEWJftJ1AXQ16GANf+SFwIxA0vvyp08aN5DOsBulTPWlob9zgUgtVknuzMa+v
M25s7DTJm2z17TZZ2BDLwuGvRpo8Mskk/HcWrWJq445X7rQxYOFglLmy/uLx7+8j
TwIDAQAB
-----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 287737513273942897181891511059037313097569
 . . . . . . . . [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 2019-12-21 13:30:54 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-20 13:30:54 +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.feet-first.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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 29275012432018673808587295841594999397720227808492559371984540314588577888699962691780574664263965688044927126712163581768835841699436911344996616915409679579497567485337182474144065908817150862909991237508384144668395879535579240085947332295265412626700534076657777711483252651753898364695000999253251943692466447660130334007363844356961080267711289099022319767526300742956790410928690363947061546567597656961480162846011066577362914833176481420800959813701016662763563800685388354749690867174616978876555426623907512470135290332779069530352246448782032779070593287583366585808532144073325070229829775626511594758991
 . . . . . . . . . . . . . . . . . . . . [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)
							157c66cdc67e148925572ed98aabd122af3d7b6e
 . . . . . . . . . . . . . . . . [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 (66 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'feet-first.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'feet-first.pentangle.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.feet-first.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10076005ea773f9df56c0e7b536487dd049e0327a919a0c84a1121284187596817145580000016f28de4d030000040300473045022100ea4854429632e539ddf2af17cb1fedfe58116b78302fa0d086011c8a62afeb200220709789f9e0def9d3d89bffd98abce553329100b54e6b1581a5a3ddf166773acb007700b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016f28de4cf00000040300483046022100b3bf0d7e8091943c2207d0b631178252f4747dfc8d3c4e7747f6143c397d8115022100c5c32178c01d2c5cc11d26b303706f0adc914db2e74ba6949c3f480e0e93e762
 . . . . [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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