flatup-app.de

Issued by R3

About this certificate

This digital certificate with serial number 03:f4:6e:3a:c3:e3:0a:d3:88:89:b6:a4:22:1d:eb:a0:a2:18 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=flatup-app.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:f4:6e:3a:c3:e3:0a:d3:88:89:b6:a4:22:1d:eb:a0:a2:18
Serial Number (int): 344512275529801876971999071997151894610456
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 29:56:db:39:e1:94:c5:67:77:18:a4:b8:ac:9e:b9:55:1e:59:2e:24
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): a1:8e:3d:bf:f5:6d:fe:30:f0:e9:be:96:cd:b0:89:0d:f7:6c:c7:a5
Fingerprint (sha256): 5e:12:bf:53:ff:17:3d:4e:18:dd:b3:61:9a:de:4a:5f:35:2c:ef:84:e4:d7:18:4a:5d:ca:3c:23:6f:92:0c:8d

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate flatup-app.de

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for flatup-app.de

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

flatup-app.de
www.flatup-app.de

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Certificate

The complete raw certificate details for flatup-app.de in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIE/DCCA+SgAwIBAgISA/RuOsPjCtOIibakIh3roKIYMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yNDAyMTAwOTA0MjhaFw0yNDA1MTAwOTA0MjdaMBgxFjAUBgNVBAMT
DWZsYXR1cC1hcHAuZGUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCo
LPkqTNutWmH2ecEinQOFIaMlVsiIl653x2BNZUXisxmS1PBnJd9vUOxvoi3gwIj1
KTbDRNBUvXX16pV7FsxrdxOc/c29T/dVYCPpjhHEv6PQA9nWktjRaVHCpgvWYbqu
yjqZNqFSkxJhUsTR59luVI8/AwcJUDLTngkOXc+iqf74Acg6gji80mR00I8erFCy
6Rslx+38ldoKIzcZx6EP5he5vz/bUe37B9vd1NyxQO8SBX92X8RTMB7ZXqF32ku4
sg4uiCC1t/91lTfqQzix+Ic/rc2znJxw+DB9beY6s7fUSyp4O04qmrJt3wSqYbOZ
451mIVlCZ5ojVCJAetC1AgMBAAGjggIkMIICIDAOBgNVHQ8BAf8EBAMCBaAwHQYD
VR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0O
BBYEFClW2znhlMVndxikuKyeuVUeWS4kMB8GA1UdIwQYMBaAFBQusxe3WFbLrlAJ
QOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0cDovL3Iz
Lm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMuaS5sZW5jci5vcmcv
MCsGA1UdEQQkMCKCDWZsYXR1cC1hcHAuZGWCEXd3dy5mbGF0dXAtYXBwLmRlMBMG
A1UdIAQMMAowCAYGZ4EMAQIBMIIBBgYKKwYBBAHWeQIEAgSB9wSB9ADyAHcASLDj
a9qmRzQP5WoC+p0w6xxSActW3SyB2bu/qznYhHMAAAGNknm8OQAABAMASDBGAiEA
y637B8iiFDG8ID3cXrRox0vmWAw+W6wfO9erUycmU8ACIQCReYon332ThK0Bobtn
LXyyRCAhFoy2DUxkFvoK2yUpbAB3ADtTd3U+LbmAToswWwb+QDtn2E/D9Me9AA0t
cm/h+tQXAAABjZJ5vD8AAAQDAEgwRgIhAIlFOMez1Vq/+OPfQZxpcCLoEfTUboAq
39AG4p/wPJNgAiEAiUXvkdJbJsGd1hiL27KV9tLgSYnFkI7liAgiWOfqehgwDQYJ
KoZIhvcNAQELBQADggEBAJvLn4wmY4lWPbrFWi9qNVINtt7QqjPTUtIOy7GqfbB4
vQ8VcnwCnC+HzsR7SHS/XJt8l8u6I8Knv8mOJjjMUK74urzSjDKD05paEHDGxQJ2
WF+Hd6mGb1tDsDkLfs3NvudMcNYjDjYEQ9yAegWDSFLz6CRozMg5L5zIGxVfOaih
cb9b8aaso93ZXiuKbvivvXnx9e3JXhB3F7pAEtMLFgXt8Kly/8hikxGej6De9XxI
91r0H4crOGbJkYhJgwjkLowtVfXA8irv55K02hbkI+eaEbAJTZKAUVcbZnvjaPTy
nxP3km9zMcMhlTrUo1Epm7KKRkyRjLHnJnrwCiunq/Q=
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqCz5KkzbrVph9nnBIp0D
hSGjJVbIiJeud8dgTWVF4rMZktTwZyXfb1Dsb6It4MCI9Sk2w0TQVL119eqVexbM
a3cTnP3NvU/3VWAj6Y4RxL+j0APZ1pLY0WlRwqYL1mG6rso6mTahUpMSYVLE0efZ
blSPPwMHCVAy054JDl3Poqn++AHIOoI4vNJkdNCPHqxQsukbJcft/JXaCiM3Gceh
D+YXub8/21Ht+wfb3dTcsUDvEgV/dl/EUzAe2V6hd9pLuLIOLoggtbf/dZU36kM4
sfiHP63Ns5yccPgwfW3mOrO31EsqeDtOKpqybd8EqmGzmeOdZiFZQmeaI1QiQHrQ
tQIDAQAB
-----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 344512275529801876971999071997151894610456
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-10 09:04:28 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-10 09:04:27 +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 'flatup-app.de'
 . . . . . . . . [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 21230212395920370461733362613915763155353617528324812270182784469274917080868874654367994297747142564098379079920903967228800883253172197223912311002463844856904864748885118566137469683965429442298379177473628314164824222660790611352562210697067558019272359068975537649191538539374318960665579326583546531104657789344874947284509631649608530563262167605919004994971650166700621715464660369181176005497826825643636614662992569196401935312565458192393396223689352490629087278293012342241532372072216195423112208040104862916252745104993583213759307655276170654269439016364787478687091613528712008297036522418893160632501
 . . . . . . . . . . . . . . . . . . . . [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)
							2956db39e194c5677718a4b8ac9eb9551e592e24
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (36 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'flatup-app.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.flatup-app.de'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f200770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018d9279bc390000040300483046022100cbadfb07c8a21431bc203ddc5eb468c74be6580c3e5bac1f3bd7ab53272653c002210091798a27df7d9384ad01a1bb672d7cb2442021168cb60d4c6416fa0adb25296c0077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d9279bc3f0000040300483046022100894538c7b3d55abff8e3df419c697022e811f4d46e802adfd006e29ff03c93600221008945ef91d25b26c19dd6188bdbb295f6d2e04989c5908ee588082258e7ea7a18
 . . . . [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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