alexander.dk

Issued by R3

About this certificate

This digital certificate with serial number 03:06:92:46:b7:43:81:d5:d0:88:81:54:10:48:fe:39:4f:45 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=alexander.dk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:06:92:46:b7:43:81:d5:d0:88:81:54:10:48:fe:39:4f:45
Serial Number (int): 263572986462000492284978133471072039292741
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: f7:e6:d6:13:94:b1:77:55:72:86:0e:e3:7e:01:cd:96:a2:1a:7e:90
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ce:08:de:31:51:82:6b:73:5d:15:ea:09:70:28:a8:c2:c3:42:68:86
Fingerprint (sha256): 42:2a:52:1e:4c:7b:1e:f6:59:53:48:4a:44:d5:70:8c:b7:c9:4d:ff:b0:ef:a6:56:7c:85:fe:e8:ae:15:e7:b3

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

Revocation information

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

Check the revocation status for certificate alexander.dk

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for alexander.dk

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

alexander.dk
alexander.is-a.dev
www.alexander.dk

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alexander.dk
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sni.cloudflaressl.com
alexander.dk
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alexander.dk

Certificate

The complete raw certificate details for alexander.dk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsojrfJCT7WZ/0Ea56CTU
Am+gYgMOT2K3dcfTYf1gKEGyueMb65SE8CjGs80h1w/wdOMI8IqbUTz5SMn+YPij
I+k80vI2eT8nM5klhoHGbrT2FTu+U8l5CKD1PJ0T4yrsaI3bbUq4xDeRivEReVxZ
OgS6xNInLlssL5VyQqHZDInuOtobJcIPz9utO1o8r4yCs9/QCZRLUQiOpS5mRT+q
G/czF5QyMojCX79gIZBZOeryjZ1eMkehBE62YyuwseII+bh/RF7CEvxTtRU+xhdM
St5TgtFLF+rt2IhJA+lbDWcz6IQMAYUv9uj6zSfkkFQBoZ5V5cpBN2Dnb5+ODMPz
XwIDAQAB
-----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 263572986462000492284978133471072039292741
 . . . . . . . . [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 2023-10-22 19:22:22 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-20 19:22:21 +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 'alexander.dk'
 . . . . . . . . [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 22537935988007147527777977112185279368243321580404711255458959579796201121054337104452140710391050091798809859461369535955937416110365104542501797595738353295793990465468843144838678381923726896558696482364673227310478231706700749666563694884418505954778108589953583843280016697293849889688421752868626253092849683508888332249050507137571482222082675675704462314444837792012068920346057350747134048056233363743136819785811234800933543636780543061504127197486808005722951115305365727802154594402891496246782783522565017901466912110836120441579938032763822302770089589531485144208747575173543487850640794880651718554463
 . . . . . . . . . . . . . . . . . . . . [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)
							f7e6d61394b1775572860ee37e01cd96a21a7e90
 . . . . . . . . . . . . . . . . [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 (54 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'alexander.dk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'alexander.is-a.dev'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.alexander.dk'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b590d8fff0000040300483046022100ae12c5d185a9a3ffec080c75ea7994808065bb63c7da4e24834b8d2b753173c0022100ef46fe0225b5d88c58b0a876dbb214a6b569e6b841c2130553d9c9de6e1937480076003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018b590d91e600000403004730450220322c4d8ac788aa36763439868b86c3c544e1e04812bc488320be0005be16f15e0221008ae606692925e4447c890f4ec6a43fae1e957a0c68b7611c7f56bf7de6d0970c
 . . . . [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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