kt-formation.fr
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:0c:aa:68:d5:af:88:d8:8f:6c:5a:69:3d:10:44:8e:2c:cc 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): 03:0c:aa:68:d5:af:88:d8:8f:6c:5a:69:3d:10:44:8e:2c:ccSerial Number (int): 265646759290549250606311177453324068596940
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 6b:f8:80:58:27:5b:dc:20:38:c6:fe:1b:15:d3:cd:c9:24:22:02:79
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): b1:b0:ee:75:12:e2:a7:0d:a8:4c:55:f2:7a:3b:ce:d1:38:63:f8:d4
Fingerprint (sha256): 02:ac:2a:99:ec:61:8a:09:f5:0f:c7:52:9e:2f:0d:85:a9:de:54:81:b9:49:ad:a4:5c:cc:0b:b6:10:f7:cb:14
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 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
www.kt-formation.fr
Other certificates including the domain name kt-formation.fr
(limited to 100 certificates)
kt-formation.fr
kt-formation.fr
kt-formation.fr
www.kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
sni.cloudflaressl.com
kt-formation.fr
sni.cloudflaressl.com
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
www.kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
sni.cloudflaressl.com
kt-formation.fr
sni.cloudflaressl.com
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
kt-formation.fr
Certificate
The complete raw certificate details for kt-formation.fr in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGFzCCBP+gAwIBAgISAwyqaNWviNiPbFppPRBEjizMMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xNjEyMDQwODMzMDBaFw0x NzAzMDQwODMzMDBaMBoxGDAWBgNVBAMTD2t0LWZvcm1hdGlvbi5mcjCCAiIwDQYJ KoZIhvcNAQEBBQADggIPADCCAgoCggIBALO/rlgzOnWCUN+k9UzyIK6p77Qjpuhi jArLDu7B0gz7HQjMUXCQnbSzvbgNN+yy4upCdNQcM11JsrOKzGmLYpIDic9Z89DL Rt7YGBJCSlV+sEPSz5c63TRo87axeYilk5LJHdfzPGJVhfwr9TIg6RAMZ9gART+P iXtTyRP51qrr4Pl9J0igCwoxl8ULnwPrSm6JK+PZ6MlXMTamxGsAWNZ5BORDX3u4 yTge0G4qD4ijgEHahlqgnwhkbxFDurCXaesx6t19znVGMOD8TiY5I70fdtbk0Vby DSE9/Ao0uT6TAheQT4o8ZI7KPjk0Pf0D1ILZnXkjEnHhK8PXaiA3u5iwzNmBuTeS +C0H8BGB7o85cpBs/yfv3a4ix0KqQIJWdnGjEza+0PsjhzhLTsVUZaYy0iJr/nX3 sPm2h1N93aPmtx4lX8yBWoxbi2ntawBTIBNVZjBYsI3se/9pZpHbwq/NWHE+BydF FktTFB/fZ8CzOCwhKQPLabeF8PyuSkUXkgsIjNYGjzh4M0G5KnS/pfq255GYBoWo J1ZOFVol5i04/0AilovFLlhK0ikhtB5YUjegWOW0Ed/GQfuXlKE2aGRAItbYwkjB /Yq/tfDz+Uk5t+KcEg2MDH2nMH0r/OmNNyVn+ZF39/k/Ub/rG6rmbbKVrcPeOVNf 3KHtZ4hmIGNRAgMBAAGjggIlMIICITAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYw FAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFGv4 gFgnW9wgOMb+GxXTzckkIgJ5MB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/z qOyhMHAGCCsGAQUFBwEBBGQwYjAvBggrBgEFBQcwAYYjaHR0cDovL29jc3AuaW50 LXgzLmxldHNlbmNyeXB0Lm9yZy8wLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0Lmlu dC14My5sZXRzZW5jcnlwdC5vcmcvMC8GA1UdEQQoMCaCD2t0LWZvcm1hdGlvbi5m coITd3d3Lmt0LWZvcm1hdGlvbi5mcjCB/gYDVR0gBIH2MIHzMAgGBmeBDAECATCB 5gYLKwYBBAGC3xMBAQEwgdYwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2Vu Y3J5cHQub3JnMIGrBggrBgEFBQcCAjCBngyBm1RoaXMgQ2VydGlmaWNhdGUgbWF5 IG9ubHkgYmUgcmVsaWVkIHVwb24gYnkgUmVseWluZyBQYXJ0aWVzIGFuZCBvbmx5 IGluIGFjY29yZGFuY2Ugd2l0aCB0aGUgQ2VydGlmaWNhdGUgUG9saWN5IGZvdW5k IGF0IGh0dHBzOi8vbGV0c2VuY3J5cHQub3JnL3JlcG9zaXRvcnkvMA0GCSqGSIb3 DQEBCwUAA4IBAQBgx2mkdIy2vdvfUxNTMuRsbzIbINw8U2uPRw3LGHSaK/nG/PlV +2MaFIiqb5WD0K1U/v2YGMTyJyuU5Ghc6ymYIzzVBx6Fw8CnowWb5n/BaieIV54N F+2ySoJ9uUlOm+DuERBwx9I3F6B3BvmAjPwyCksFFtdl/nQzcs07l9+YyimM8mQJ OJ/dVc3UkD/SkaRB8eMDLj/b4sAvLjQuJLpsiOgHIr2OdUvdM/ZjHv5nfEky3VJi Mmuuv7WFFWpNgtVv8wo0ODJKKTPI3LGZ19dQ2sVNsLfUwgh587C0HNSM35TNopeT 1+yQwmwsErljvMS4Xe41yF+0CmaJi/KBxtbz -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAs7+uWDM6dYJQ36T1TPIg rqnvtCOm6GKMCssO7sHSDPsdCMxRcJCdtLO9uA037LLi6kJ01BwzXUmys4rMaYti kgOJz1nz0MtG3tgYEkJKVX6wQ9LPlzrdNGjztrF5iKWTkskd1/M8YlWF/Cv1MiDp EAxn2ABFP4+Je1PJE/nWquvg+X0nSKALCjGXxQufA+tKbokr49noyVcxNqbEawBY 1nkE5ENfe7jJOB7QbioPiKOAQdqGWqCfCGRvEUO6sJdp6zHq3X3OdUYw4PxOJjkj vR921uTRVvINIT38CjS5PpMCF5BPijxkjso+OTQ9/QPUgtmdeSMSceErw9dqIDe7 mLDM2YG5N5L4LQfwEYHujzlykGz/J+/driLHQqpAglZ2caMTNr7Q+yOHOEtOxVRl pjLSImv+dfew+baHU33do+a3HiVfzIFajFuLae1rAFMgE1VmMFiwjex7/2lmkdvC r81YcT4HJ0UWS1MUH99nwLM4LCEpA8tpt4Xw/K5KRReSCwiM1gaPOHgzQbkqdL+l +rbnkZgGhagnVk4VWiXmLTj/QCKWi8UuWErSKSG0HlhSN6BY5bQR38ZB+5eUoTZo ZEAi1tjCSMH9ir+18PP5STm34pwSDYwMfacwfSv86Y03JWf5kXf3+T9Rv+sbquZt spWtw945U1/coe1niGYgY1ECAwEAAQ== -----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 265646759290549250606311177453324068596940 . . . . . . . . [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 2016-12-04 08:33:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-03-04 08:33:00 +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 733310938138743340338778360562279171183771622651826241727245444956950077931272895561506086697087742203407523316825742888866892611933855310125851268800432423063997368933314301064824994456974414440969787582793684508035723170607812985886201144456045823436351156283590051087018053824359105677681285410414482153932842886033655458375504314695708823198695409878151784205284297083158530070426541970433998019317960756340615747444826966500959867745740686091269754601657758554508852713582599733995510949899293952500853008975177899386618680691591338198158293832208481502354254180083173716461387720109983428322938752538484458184226364852620253397225686906316243843723236378045598532780774619044772722918744759035127572433584054875062111397733592691015307582944285090152316583839280654347424956031849658314970870410492009027835937303143753273560099623108419134586891263225861333927795280158070131934875164699957927247239398537541639963773146161217770865108410690835592496107481248220137677039559587866145909012438211297804280954411094164507190703633773031543484795609262048633101287376759975822563739594330354090212574535292429887387112249040184790365250143305088244751081258170893381183971455217610569017735258880304015200613063110009577543852881 . . . . . . . . . . . . . . . . . . . . [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) 6bf88058275bdc2038c6fe1b15d3cdc924220279 . . . . . . . . . . . . . . . . [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-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 (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) 0060c769a4748cb6bddbdf53135332e46c6f321b20dc3c536b8f470dcb18749a2bf9c6fcf955fb631a1488aa6f9583d0ad54fefd9818c4f2272b94e4685ceb2998233cd5071e85c3c0a7a3059be67fc16a2788579e0d17edb24a827db9494e9be0ee111070c7d23717a07706f9808cfc320a4b0516d765fe743372cd3b97df98ca298cf26409389fdd55cdd4903fd291a441f1e3032e3fdbe2c02f2e342e24ba6c88e80722bd8e754bdd33f6631efe677c4932dd5262326baebfb585156a4d82d56ff30a3438324a2933c8dcb199d7d750dac54db0b7d4c20879f3b0b41cd48cdf94cda29793d7ec90c26c2c12b963bcc4b85dee35c85fb40a66898bf281c6d6f3