www.koldeweij.nl

Issued by R3

About this certificate

This digital certificate with serial number 04:00:89:ec:e6:49:7f:de:07:b9:f4:d9:a4:f9:7f:17:d6:0d 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=www.koldeweij.nl

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:00:89:ec:e6:49:7f:de:07:b9:f4:d9:a4:f9:7f:17:d6:0d
Serial Number (int): 348632478015299571998095368546254558057997
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: bd:fd:1b:4f:c6:81:e8:1c:9a:fe:71:fd:03:19:69:d4:08:e6:44:1b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ec:62:14:48:cd:3e:03:7d:83:bc:3c:bd:09:a4:c2:4f:d5:92:c8:3b
Fingerprint (sha256): 11:fc:97:6e:3f:f1:9e:96:90:35:38:80:72:17:58:e4:72:df:07:65:23:7a:3a:83:f4:e3:b4:93:9e:f6:2b:46

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

Revocation information

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

Check the revocation status for certificate www.koldeweij.nl

3

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.koldeweij.nl

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

koldeweij.nl
webmail.koldeweij.nl
www.koldeweij.nl

Other certificates including the domain name koldeweij.nl

(limited to 100 certificates)
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl
www.koldeweij.nl

Certificate

The complete raw certificate details for www.koldeweij.nl in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxe3HkQD6fMXrv+uQsnew
NYNACuLIKyt4rHqCcwUv4YHtsdf0ygAgJr06uW03/2V/TpTV7H+BwOAhmByKswq1
qhNoQpi8f7U7deyetYBrgP3velybwrnZflUtFrfMBUXXfATtw4N87n6kIw7gb+7Y
A0p6RprrTxXplI1buiozy3cbDmhQ0rMQm0igV6xN2z9q9vFt07h4YrSLFBi1duHF
P+Slz12WnjQz2OjKrprML8Wgxf3SQ5lmw+p8xWeWxT4uc0PsV+FsKlMkDN6IinA9
WZK0LT7IpE+a6oSDaSUv7G8Sl593IssIVhdeBkIZQulOjKe6drqf8udpQSsL/6bG
rQIDAQAB
-----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 348632478015299571998095368546254558057997
 . . . . . . . . [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 2023-09-10 02:33:34 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-09 02:33:33 +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.koldeweij.nl'
 . . . . . . . . [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 24986199547637868674446367978470722156513354723154330268117768959548071894570100246759769782647903968978525612064779095702618504670624214910460827104616559691240666645118291799355219515223802835904553627161963537831513815534541466421575548659382237499661182150652856609022621518635491941752040147130102301110894241463630241081064960953780900875550763061707758146328363224713648680039321651382493725005256231104552191764217640447248163676137333694747063410366239925305813953670475690273581258583999371308590460063665584296919454423571753863594100239539789115835497244475632757071654317818629586411107702602694299928237
 . . . . . . . . . . . . . . . . . . . . [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)
							bdfd1b4fc681e81c9afe71fd031969d408e6441b
 . . . . . . . . . . . . . . . . [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 'koldeweij.nl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmail.koldeweij.nl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.koldeweij.nl'
 . . . . . . . . . . . . . . . . [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)
							00ef0075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018a7d26e2dc000004030046304402202274968e3136dd5dd56d52ab5e1b2673a1e30c945f89161ad8bde64c96c4c83302200f5fe891460799c55d21148683d168cbfcdf784c93e77e8acb1ad59cdb040c04007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018a7d26e2c800000403004730450221008c1a912ac417fd660e5026b29f0662fae80158ff815d36d4ed4bf1f25d28d4e902202f6b141197c2a9ff7e397f471895ba5b644dd937268f2de8cb9b23d124b847d7
 . . . . [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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