kt-formation.fr

Issued by Let's Encrypt Authority X1

About this certificate

This digital certificate with serial number 01:cb:0d:2b:fd:ef:88:e4:ca:9f:73:b6:4b:7d:65:a5:0b:34 was issued on by Let's Encrypt.

With 2 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=kt-formation.fr

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 01:cb:0d:2b:fd:ef:88:e4:ca:9f:73:b6:4b:7d:65:a5:0b:34
Serial Number (int): 156207114799848402751688489904767615961908
Serial Number lenght: 137 bits, 18 octets

SubjectKeyId: d8:c7:c1:bb:13:8e:c9:a2:0d:5a:8d:0b:ac:92:31:e4:fc:a0:65:49
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 51:8f:b0:b7:7c:c8:ee:20:0d:a4:bb:8e:31:cc:9a:85:1e:88:fd:e2
Fingerprint (sha256): c1:c3:0f:46:9d:7d:02:27:c7:7b:3a:6e:d8:05:80:52:e4:b4:8e:27:4d:83:91:8a:dd:a4:a9:55:79:b1:82:b2

Issuing Certificate URL: http://cert.int-x1.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x1.letsencrypt.org/

Check the revocation status for certificate kt-formation.fr

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for kt-formation.fr

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

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

kt-formation.fr
www.kt-formation.fr

Other certificates including the domain name kt-formation.fr

(limited to 100 certificates)

Certificate

The complete raw certificate details for kt-formation.fr in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIGFzCCBP+gAwIBAgISAcsNK/3viOTKn3O2S31lpQs0MA0GCSqGSIb3DQEBCwUA
MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD
ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMTAeFw0xNjAzMjIxOTI1MDBaFw0x
NjA2MjAxOTI1MDBaMBoxGDAWBgNVBAMTD2t0LWZvcm1hdGlvbi5mcjCCAiIwDQYJ
KoZIhvcNAQEBBQADggIPADCCAgoCggIBALwt6zKaB4fYnrJ913lfp23wYbzQEgRo
AlJ+hPZDPMq1tS/pjlk4DZrm//vCMxDpiVUnIZfAqgWGE/WG0+0WOaFQBlRYNRUQ
ouRuhMMF1GMtVd1jzslhibWgi6Dlxl5ZPzjv5b6QY8m5pJ2DxBp66b2g8QXiwbnS
csqBiW0IwljOjotph/nRUkvCVDAtIZ6Dpm/a7XnZd7dcdDwdK5bPB4ziFVK/eUaC
U/UC+s7yhPWZI/zMzlhWvZn1mwyWt5neEfNmfN3bFIcOSE47ctUycvirFZBCnuIn
szBj6FfCrtH8zN8w5tPyt8Q34Bylo4q4YROdv68s/4YjQV60uZomByBKQ3bVGTS+
lAnh0+VHOYCZIsbFkHhCUFTS/0Y8AV7t9fvfPOXMEY/JH/vRpJMUZBTldgg2awAx
TxE64BvLTimELDwHvhlg7H4jVsk9oU/BtMK6ZWcFePMH56TFzjr2e98ybI2if4HF
Q8KgaXq30W/CAEoBlkSO7dCY8Pqj9cIId+QoGdYDtpA4acXp0m/m4R7JZ1EsiOjn
DCV8m6tSEN4lqpVPr9OYBywVjFPc442c9kdZmNuHC9LogJFojNYmGHWbi/+VQdhN
2nWuwvSHPWF5flBH2rKOHw4+W6OGbaocAAO7IcHUgG9lAv5Xy4DkFK10Qn4Yjewa
DUx4b+eC//PtAgMBAAGjggIlMIICITAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYw
FAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFNjH
wbsTjsmiDVqNC6ySMeT8oGVJMB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/z
qOyhMHAGCCsGAQUFBwEBBGQwYjAvBggrBgEFBQcwAYYjaHR0cDovL29jc3AuaW50
LXgxLmxldHNlbmNyeXB0Lm9yZy8wLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0Lmlu
dC14MS5sZXRzZW5jcnlwdC5vcmcvMC8GA1UdEQQoMCaCD2t0LWZvcm1hdGlvbi5m
coITd3d3Lmt0LWZvcm1hdGlvbi5mcjCB/gYDVR0gBIH2MIHzMAgGBmeBDAECATCB
5gYLKwYBBAGC3xMBAQEwgdYwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2Vu
Y3J5cHQub3JnMIGrBggrBgEFBQcCAjCBngyBm1RoaXMgQ2VydGlmaWNhdGUgbWF5
IG9ubHkgYmUgcmVsaWVkIHVwb24gYnkgUmVseWluZyBQYXJ0aWVzIGFuZCBvbmx5
IGluIGFjY29yZGFuY2Ugd2l0aCB0aGUgQ2VydGlmaWNhdGUgUG9saWN5IGZvdW5k
IGF0IGh0dHBzOi8vbGV0c2VuY3J5cHQub3JnL3JlcG9zaXRvcnkvMA0GCSqGSIb3
DQEBCwUAA4IBAQAbYSTtDo3ei2y7B8haVU8JSdbeSkwWHrAxDoo3X91yiccqzHhy
zJ8NxWCizzBFU3QXQuZ/9fw2NbEB2lNYFxs1nx0vxn3afTz913UNmhMZOjexBoFJ
4WdFRlgwbZizQFtO0bGIBmIl9LhgU3F0m9brov05emz6Qqi/CfGeFD9TYPwY9P6e
aeF5z3g/qPdJMXgz1Em6tEuzpDE4MkwXCQcJtnhwLaADXl9r6kZVJW4YqddH3rLt
sPViZ9iEmY8TtVp6ji6WAxTjAXIiO8vczkx7nxHQq4Zi+SNM4Rc1RqJ5OU4wJCEJ
5591Q/BrzjeeQosVOsoSzPJ0n+g+E1N0MP7o
-----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 156207114799848402751688489904767615961908
 . . . . . . . . [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 X1'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-03-22 19:25:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-06-20 19:25:00 +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 'kt-formation.fr'
 . . . . . . . . [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 767704850876856378501093450088035214679026302977111527477461000768313472372152961687173900951846943617783077183481876550719681595639728663122126690708066132852591240695863388003422987465249324645990489452375778245058550849592839358145715648922345209207669886241428488591151819910464450548149222270157578134728704046925376839777824444539002640995366838132528848714099436367527004465888562579118985942708563136144729342881146571762928067656932561746669334623523420603898529944061449400472969737055657351012916731836844183512024526895007737504137045262663497809421867042887720931814443701488943761330116793468811254389012185953736349344669756853351039825688206415090051906523011477754495225168015475956468018699341537852886471506461760864274018722537884265606706521946929133768107070826812710251605137049452313718432138805619662214318361111373995461545007533616823477981688970957864722224727857095807016769757183157811977923624866643608572149662456397729929597214126188954213459003933552453312649581659023619932010510933895386082678849007809480048641614194851564702555850107982243891976094881906609729954242783453091444459251235710759450942147483704956768565596928215298387198947684742642529509395727274730254664786805119237699563156461
 . . . . . . . . . . . . . . . . . . . . [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)
							d8c7c1bb138ec9a20d5a8d0bac9231e4fca06549
 . . . . . . . . . . . . . . . . [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 (100 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-x1.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-x1.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 (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kt-formation.fr'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kt-formation.fr'
 . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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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