flatup-app.de

Issued by R3

About this certificate

This digital certificate with serial number 04:53:5e:d4:72:8c:4e:74:37:f4:8b:df:dd:95:2b:65:7d:36 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): 04:53:5e:d4:72:8c:4e:74:37:f4:8b:df:dd:95:2b:65:7d:36
Serial Number (int): 376818630703327588428155713691222599367990
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 1a:5c:06:b5:9f:23:12:f3:10:8d:4e:25:0a:e6:5c:b2:e0:64:a0:fa
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 98:db:78:70:e6:b3:e3:dc:34:93:31:8a:ca:c0:5d:43:e0:e6:b7:05
Fingerprint (sha256): b5:a9:9c:23:dd:79:59:97:ed:3c:ae:19:27:86:e1:a1:9b:c5:0a:7f:54:47:ad:c7:7b:24:4c:70:dc:ef:16:62

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+TCCA+GgAwIBAgISBFNe1HKMTnQ39Ivf3ZUrZX02MA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzEyMTExMDA0NDRaFw0yNDAzMTAxMDA0NDNaMBgxFjAUBgNVBAMT
DWZsYXR1cC1hcHAuZGUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDC
r8Br6KExh4qrg9dykLTkqcfzWZKYH1mQyyAHJx0jsjOqmTIh7k6R4McGWTxiZd4e
cwFT5Qfw/khDzg0XixIA5YcaVGNaajQPnnQ0b0sXI5TsMNFRVeD1FagfP+fpbd3J
aUuKrqfPaQqipN/QAupTc/SBIeaYH+cskwHKs2fYUuVYM39hJUjXd8Vl1gUmKQ4d
AE31ckWASdX9TFSFzt4BczcLXwGBJoR50mNmK3Gvnn4KE0+tflhPGEvhFCpxKN7y
48YKJjGFSu5tHPsS2Hb7hN0cF1Tof9ItiHxln4Nfgt18ERUSS2UjsYZzPY4uTJiG
RSF594qeBjdkEK/HydcnAgMBAAGjggIhMIICHTAOBgNVHQ8BAf8EBAMCBaAwHQYD
VR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0O
BBYEFBpcBrWfIxLzEI1OJQrmXLLgZKD6MB8GA1UdIwQYMBaAFBQusxe3WFbLrlAJ
QOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0cDovL3Iz
Lm8ubGVuY3Iub3JnMCIGCCsGAQUFBzAChhZodHRwOi8vcjMuaS5sZW5jci5vcmcv
MCsGA1UdEQQkMCKCDWZsYXR1cC1hcHAuZGWCEXd3dy5mbGF0dXAtYXBwLmRlMBMG
A1UdIAQMMAowCAYGZ4EMAQIBMIIBAwYKKwYBBAHWeQIEAgSB9ASB8QDvAHYAouK/
1h7eLy8HoNZObTen3GVDsMa1LqLat4r4mm31F9gAAAGMWI0ALAAABAMARzBFAiEA
pDMJPvYv9KzQGYDXuRLEHdXK06NhFoFRV82XDhUEIn4CIAJEaruMaBX6PG1iG/xS
pJTC++rOh/w3KeRwxpzDYA0RAHUAdv+IPwq2+5VRwmHM9Ye6NLSkzbsp3GhCCp/m
Z0xaOnQAAAGMWI0AVQAABAMARjBEAiAg7l+qQuNvB+bwwpI0CcTN9UFR8NzSK/6S
+kntSgnGkQIgHjyX0fIl+ZEZnqIy7uJNjZfAinqnILKQNKihktXrWb8wDQYJKoZI
hvcNAQELBQADggEBAA77n5sY9KKvWnuMLOsZkVZ3QIbQu0B2s4vatLKjW035Fb+q
RP4RSTtm+gZrckjxpFP6yH+4cPdtpsBL6dnf3zC9Jilm55rFv5s0exz4/XM1XLJB
NdrHOysQu8OrWeJAaJxOgEo0Ot6DuZTKB+6QKuD9pHTy+OKqD9JRoTGpS+4Av1Ld
oDkdEiQKBt+RtqFzVFsRsm2oJjqhiPysEm2rgj2w/I1Ui4lxZ1IIhk3dj4qwsLW7
tcvgjDRdZJAknDbWD058HAZCdSbtEeP+FWuP8+ZCAlMRf6P6+08KqDZEI6HkIrs+
dBD4BJG49wjm3BTS/13vvIOQyq+1qv4Cr8oOW/w=
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwq/Aa+ihMYeKq4PXcpC0
5KnH81mSmB9ZkMsgBycdI7IzqpkyIe5OkeDHBlk8YmXeHnMBU+UH8P5IQ84NF4sS
AOWHGlRjWmo0D550NG9LFyOU7DDRUVXg9RWoHz/n6W3dyWlLiq6nz2kKoqTf0ALq
U3P0gSHmmB/nLJMByrNn2FLlWDN/YSVI13fFZdYFJikOHQBN9XJFgEnV/UxUhc7e
AXM3C18BgSaEedJjZitxr55+ChNPrX5YTxhL4RQqcSje8uPGCiYxhUrubRz7Eth2
+4TdHBdU6H/SLYh8ZZ+DX4LdfBEVEktlI7GGcz2OLkyYhkUhefeKngY3ZBCvx8nX
JwIDAQAB
-----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 376818630703327588428155713691222599367990
 . . . . . . . . [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 2023-12-11 10:04:44 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-10 10:04:43 +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 24576897530431987276002612218620860097509187988163089078609675944502098108767762007030659461161384695950410068956963725375886044587071147387056259769215176743244018857683044416652217246356791116836242861399813102828548005894816084714904551614226810761549833615658905807051568979889816928606264856798630560388497046978095632969107308605799628637174463336211044257917520936809188327418022999568770936785717348329896193480707531201329818216716657786085192494932309217779231191767153352633913566000058166850042841410206802004737779714432572590089735494447663660533964471545062175144248729064690704630859195651210093385511
 . . . . . . . . . . . . . . . . . . . . [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)
							1a5c06b59f2312f3108d4e250ae65cb2e064a0fa
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007600a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018c588d002c0000040300473045022100a433093ef62ff4acd01980d7b912c41dd5cad3a36116815157cd970e1504227e022002446abb8c6815fa3c6d621bfc52a494c2fbeace87fc3729e470c69cc3600d1100750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018c588d00550000040300463044022020ee5faa42e36f07e6f0c2923409c4cdf54151f0dcd22bfe92fa49ed4a09c69102201e3c97d1f225f991199ea232eee24d8d97c08a7aa720b29034a8a192d5eb59bf
 . . . . [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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