wlanowski.de

Issued by R3

About this certificate

This digital certificate with serial number 04:8b:74:22:2e:9d:b9:0a:1c:92:07:77:e5:41:b2:2c:fc:4b 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:
  • 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=wlanowski.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:8b:74:22:2e:9d:b9:0a:1c:92:07:77:e5:41:b2:2c:fc:4b
Serial Number (int): 395902760660142603667012389892642413804619
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: e0:16:79:2a:3e:4e:d6:54:8a:46:92:4e:5f:b8:5f:6a:ed:40:1b:36
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): d3:0f:bd:f9:b4:f5:e8:e9:24:2f:d8:31:81:b7:7f:fe:31:3c:da:fd
Fingerprint (sha256): ba:5b:e0:9f:5d:b6:bc:fa:5c:ee:41:6c:b7:73:2b:b4:e8:4d:26:77:f7:bf:45:b1:68:86:84:6a:8c:b8:7e:6d

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

Revocation information

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

Check the revocation status for certificate wlanowski.de

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for wlanowski.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

webmail.wlanowski.de
wlanowski.de
www.wlanowski.de

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wlanowski.de

Certificate

The complete raw certificate details for wlanowski.de in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFDDCCA/SgAwIBAgISBIt0Ii6duQockgd35UGyLPxLMA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzEwMTAwNDM2MTdaFw0yNDAxMDgwNDM2MTZaMBcxFTATBgNVBAMT
DHdsYW5vd3NraS5kZTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAKrz
GH+vxUT/Q71VM4E/5W9B/VhNGpspVnehNAo/x8V/7BhNjN+iXP8M2YW7o0ZrNduV
6ETZvV0ngorGzGMnhgQDlkfUfuve/1Xh/+OIhfMp7u72gzyTior0zYCWro5caxJU
Owhl5tH9acRgfUujMfm2VQww/aLhMYMEqn6jVNMX4Zb+ewbgS8kTeSGok5C4rpGJ
SAQvmchfOhu1HP/12+rRVA6PewijSNqJlQQodobWR3AFn/VObHlZszCgQcwLU1XP
1CcbC2QyA/n2sRaQppeJVnztiiqGY10Qwqo/oTHZw7JXU5dxZlnxHT6Q2/otofYd
oDj+qQ7++ASrv71xMSMCAwEAAaOCAjUwggIxMA4GA1UdDwEB/wQEAwIFoDAdBgNV
HSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4E
FgQU4BZ5Kj5O1lSKRpJOX7hfau1AGzYwHwYDVR0jBBgwFoAUFC6zF7dYVsuuUAlA
5h+vnYsUwsYwVQYIKwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVodHRwOi8vcjMu
by5sZW5jci5vcmcwIgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5pLmxlbmNyLm9yZy8w
PwYDVR0RBDgwNoIUd2VibWFpbC53bGFub3dza2kuZGWCDHdsYW5vd3NraS5kZYIQ
d3d3LndsYW5vd3NraS5kZTATBgNVHSAEDDAKMAgGBmeBDAECATCCAQMGCisGAQQB
1nkCBAIEgfQEgfEA7wB1ADtTd3U+LbmAToswWwb+QDtn2E/D9Me9AA0tcm/h+tQX
AAABixgWBEwAAAQDAEYwRAIgD2prhWV9zNazqBUmc6zNgVw2fKGDfp0wkdWGpWut
PxsCIEXQSNIYU8OFjEgRX7ycKpdJpFxexafnqtd35EepwA6bAHYA2ra/az+1tiKf
m8K7XGvocJFxbLtRhIU0vaQ9MEjX+6sAAAGLGBYEbAAABAMARzBFAiArZD2ee3MO
CliJJfloHbOgJtaCNXas1iCFIOTKtBVjwQIhAOtenb99nRJMK2YD0UzlLH5XU+a5
wM50qEmFjvXeFldUMA0GCSqGSIb3DQEBCwUAA4IBAQA5XdoMKlLSxjEwrBj1VCRf
RRRId5p/hxHLkxrHsoQaj2DNG8+vh/vMLKyL03tuWbTiIE0Nef9dypeBItPpfKuv
CFBcQXey5cfQAHeZgFckw/01BX+8kGIqpBXnESECaKPo90wjLk0dN2dX0PVLUNQp
Yeo0J9aESorEhdV3dR/VqjEAw47xt7ZRZqhqikBe9klzkw/tOirFo96uGtO77+Av
KIqyFDdKdcTp921J3n2UWqrDbzqj8lyFCu2qdI2+jXhyK9jm+9IutPa6lMHluWZM
KbLAXxZdyvjYBArnHo0Bm8+DPfg4Npj7K2nTKs36GwuozHdPW9T/BTUlgC0uMWcQ
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqvMYf6/FRP9DvVUzgT/l
b0H9WE0amylWd6E0Cj/HxX/sGE2M36Jc/wzZhbujRms125XoRNm9XSeCisbMYyeG
BAOWR9R+697/VeH/44iF8ynu7vaDPJOKivTNgJaujlxrElQ7CGXm0f1pxGB9S6Mx
+bZVDDD9ouExgwSqfqNU0xfhlv57BuBLyRN5IaiTkLiukYlIBC+ZyF86G7Uc//Xb
6tFUDo97CKNI2omVBCh2htZHcAWf9U5seVmzMKBBzAtTVc/UJxsLZDID+faxFpCm
l4lWfO2KKoZjXRDCqj+hMdnDsldTl3FmWfEdPpDb+i2h9h2gOP6pDv74BKu/vXEx
IwIDAQAB
-----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 395902760660142603667012389892642413804619
 . . . . . . . . [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 2023-10-10 04:36:17 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-08 04:36:16 +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 'wlanowski.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 21580386800883695626436447500863812974582323469878352469734854246079523791575964226279067689002647200932152251180555896326552940553049107911652034363185288817839473913888274195786965559876583175676655801942910918480886365508975119911353472916988079992261473327093446259724230283733468445822297844892188159025586428342014849317041644870543011894411458010282504909594070420997236265546233229355039955498209659486542821418413903538602544863597136614897719562686485331835677378959526170302791164082954330692708199877672107555186505283861026939868884621667187244265009718297065127358648121233974463530136405158733871657251
 . . . . . . . . . . . . . . . . . . . . [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)
							e016792a3e4ed6548a46924e5fb85f6aed401b36
 . . . . . . . . . . . . . . . . [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 (56 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmail.wlanowski.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'wlanowski.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.wlanowski.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)
							00ef0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b1816044c000004030046304402200f6a6b85657dccd6b3a8152673accd815c367ca1837e9d3091d586a56bad3f1b022045d048d21853c3858c48115fbc9c2a9749a45c5ec5a7e7aad777e447a9c00e9b007600dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b1816046c000004030047304502202b643d9e7b730e0a588925f9681db3a026d6823576acd6208520e4cab41563c1022100eb5e9dbf7d9d124c2b6603d14ce52c7e5753e6b9c0ce74a849858ef5de165754
 . . . . [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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