www.muw.de

Issued by R3

About this certificate

This digital certificate with serial number 04:6e:22:c6:37:d7:1a:40:92:ff:f4:99:f8:1d:ae:7d:5f:de 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=www.muw.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:6e:22:c6:37:d7:1a:40:92:ff:f4:99:f8:1d:ae:7d:5f:de
Serial Number (int): 385926427047553602420119551142899857842142
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 7a:1d:3e:ce:25:69:c0:d1:fa:bb:05:21:31:c4:fa:9c:df:aa:cf:7d
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): b8:ab:8a:92:5f:6e:7a:3e:79:f7:75:6b:98:6a:57:45:75:0a:94:1d
Fingerprint (sha256): 12:be:dd:6c:6b:9b:9a:43:be:08:1f:3a:e5:e4:41:62:26:32:b8:7f:96:fb:e6:16:a1:25:0c:f4:e7:8e:b3:7e

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

Revocation information

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

Check the revocation status for certificate www.muw.de

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.muw.de

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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

muw.de
www.muw.de

Other certificates including the domain name muw.de

(limited to 100 certificates)

Certificate

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

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAhB87nHJ17YTiyIlmE4pa
tJSKQQPqeHD+xjJy2s6CwKT0jbFe/Z9QV9++FsmVMVmt4Vpo2kLwPzO+YUpElfXA
3pbLbjksAk8E5Z6Bq6cQs8OYs2cR8A0O6hnU1db2rc/ggvV2PemoPY1GrrB44rXn
xy8Uu8qXw6xR6AyKAap5UWtXpp1kZAzyB60tkGqtMLw+dATn7/2vsi3UuIlBv2uz
QginaSBc4l3uYOAWxeVKzj2Ea1wyFgLrX22cAs4EI1UizGc1bBFA1K/pF62NiYpk
Hw+B9U3Jipc3eCOxl8L4bdhafDQjPyRUlcEx007BRpMxJMS87T+zVRQUsl5ATo4A
gNpQUu+/d1+MdHeU3yST0BTnLBlHTm4kGEhl3JzO5Mn2MDZdZLBloWo1D2eOrd1N
BvhTqcNCjdZU7H3Pk7qa1cd4C1PJBvl9j79f/qjwKKTM6gVOF/XntlCdi0t1os3m
eDG+Gzd1e3eK1BOSnpG+wKSrBTdMCWRU+7uw33Dp+x3jNm4jCzz+ujtF5G8U5lnK
dQvnPr3vzRop4VcO4w4Uazl8NinsRvD4ethj35nOg2egLEHyk0uXWkIkLGGGabJw
qImyL0IxbqqfzZl/M3ylsGpqY+CThO8ifFfjcijvX5JCgcyKw+ShwP+yT2DXkQ2r
RmaeX1K15clG4X0JnFSXvfcCAwEAAQ==
-----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 385926427047553602420119551142899857842142
 . . . . . . . . [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 2023-11-20 22:13:08 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-18 22:13:07 +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 'www.muw.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 539010747195364367643120617007805783985906056558873109896931950478789174651769945818401922901618226495441574313747338955874547034502585595989582734978957215858880736620954649664170125486911817449312724640421911523441175435628847349216705436562608389488990769840461301086678903093694927529253075844873146452599515998752602757315966163653440653926164971122164478822237016244905573297980866004089206135529912311487881861154063618775726180863068919672115296429743938684503943575124087420147200548619277128008556084665721400115101660508219224434713266500693751063074576212477368490896186461629274583709491677948600111508287247002831629178370731474196488274573363713243707552156960444491742683255116584211343511088035188906199108245605310717740858162026041952541120127570835966273195853883694782485823223157667791978997660645981537288445052100508656605671514731468168544760505245733499385372093917614123192808291271371497888666027628927928443961328364791571323517961905005654007459406816005440754361320432604833003095200415200184311512634193024961443802448109396657762148205738136956150131735249038951044702676725092207602836741991224047311868534200232156461763802818720711548251819614521910012100302411765925431041696127276845974339173879
 . . . . . . . . . . . . . . . . . . . . [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)
							7a1d3ece2569c0d1fabb052131c4fa9cdfaacf7d
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'muw.de'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.muw.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)
							00ef00760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018bef025313000004030047304502205cd8887b51d8f74bb21dd0d8cf9449abc81b607960f53314e5890bca845a1d4e022100eebc834ba0693cba70dbb01f112568b569c9e81dab7c71a7ea774b4eb2dc4c0700750076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018bef02534e000004030046304402207e927767b9587573a1c1aee54d7f8e642e6b94f091562a8ef5f7e5ad54ed6bf3022031e7e79330d294b14478aab9d59a904905c57f8d6df06bb74a77d5503fd62abc
 . . . . [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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