DV SSL/TLS Certificate for wateriq.nl

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the wateriq.nl DV SSL/TLS Certificate

This certificate with serial number 06:1f:b6:5d:06:2b:cc:3a:5c:cc:c1:7f:b7:fc:51:72:e2:81 for wateriq.nl was issued on by Let's Encrypt.

With 2 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for wateriq.nl provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 06:1f:b6:5d:06:2b:cc:3a:5c:cc:c1:7f:b7:fc:51:72:e2:81
Serial Number (int): 533464871469115744782905232449738110067329
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 26:1f:06:62:ed:29:be:58:94:40:67:3a:ee:fc:a1:71:85:c8:9e:45
Authority Key Identifier: c5:cf:46:a4:ea:f4:c3:c0:7a:6c:95:c4:2d:b0:5e:92:2f:26:e3:b9

Fingerprint (SHA-1): d8:27:d9:33:f7:a1:61:48:c0:c7:d7:de:d6:45:8f:db:b9:66:86:26
Fingerprint (SHA-256): fb:38:d2:6c:2e:6b:b2:dd:6e:d5:9f:ec:e8:39:0d:ef:d1:13:b4:26:06:5e:b6:36:e2:85:89:f6:a7:36:76:75

Issuing Certificate URL: http://r11.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/2.crl

Check the revocation status for certificate wateriq.nl
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for wateriq.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
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for wateriq.nl in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFADCCA+igAwIBAgISBh+2XQYrzDpczMF/t/xRcuKBMA0GCSqGSIb3DQEBCwUA
MDMxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQD
EwNSMTEwHhcNMjUwNjA2MTgyNzEzWhcNMjUwOTA0MTgyNzEyWjAVMRMwEQYDVQQD
Ewp3YXRlcmlxLm5sMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6qRF
5lUqGmYLiCtwzcbXzrOYZJYrd6cFRRvvivPVUiQsPrVZJrtGw3APe0pXvSl9wnX2
bW9+Sff6nJG8rMO1plLD7YxpYkuP6QZiYmZ6lMYYfD+BnVb/N3TIN44pD27JGrAZ
Kxh0x3JBqglxKlaEmUA3aPfxdbRRgnkK8UOy2d8QhIPHep+H6NchgbNcnGkHujsd
jasnZWtDSi8DMlW9PoWRMCCI6OKI32d3ya9aLW3Z/Wu9SGQgYNXd6kqxOnT7utJd
dxnwBAUQkUsb8tpk+66f414wSGTh42CJ1nDmOtviIfz7gJo1ZMd9r/nLDoFijakx
jQGcJ3iiSXAO5SX3zQIDAQABo4ICKjCCAiYwDgYDVR0PAQH/BAQDAgWgMB0GA1Ud
JQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQW
BBQmHwZi7Sm+WJRAZzru/KFxhcieRTAfBgNVHSMEGDAWgBTFz0ak6vTDwHpslcQt
sF6SLybjuTAzBggrBgEFBQcBAQQnMCUwIwYIKwYBBQUHMAKGF2h0dHA6Ly9yMTEu
aS5sZW5jci5vcmcvMCUGA1UdEQQeMByCCndhdGVyaXEubmyCDnd3dy53YXRlcmlx
Lm5sMBMGA1UdIAQMMAowCAYGZ4EMAQIBMC0GA1UdHwQmMCQwIqAgoB6GHGh0dHA6
Ly9yMTEuYy5sZW5jci5vcmcvMi5jcmwwggEFBgorBgEEAdZ5AgQCBIH2BIHzAPEA
dwDM+w9qhXEJZf6Vm1PO6bJ8IumFXA2XjbapflTA/kwNsAAAAZdGtMzsAAAEAwBI
MEYCIQCslHJNxaGZshyy4EBqHzNYJKlQUbUsTOH9U+RpisnZXwIhANjEPD8Qoxs7
HOVqEn75k4HLoP4DlHrhVmq2ruB7YuuGAHYADeHyMCvTDcFAYhIJ6lUu/Ed0fLHX
6TDvDkIetH5OqjQAAAGXRrTM4AAABAMARzBFAiBT5i+TR2n8Op+Vtev9w0xbaFy1
pgrWY7eEc6iBfu7tGAIhAJuEwzFAgrJgh8Kw07YRM3hSgi00vqZ5ezahfWbe7A78
MA0GCSqGSIb3DQEBCwUAA4IBAQA11yhZZlUvkeOscVPiApxpqI78RNOeFvvafEso
PiLmows9WvAPD4Lq5UeVaL2iQt7Fw+vYBNlX5lIAqDedPCJ47PapZRu0jutQ7XqY
R+s/buYkcWDXv8MsTSiO59HTO+47d65NjE6mh6x5tqkNOUqpYGBBUbAEjOSKiUVb
SYxKA6F+IPr/yuoTJnYMWofHq7NYJbTJeTLgsdUGO8KbAf5wFxQvIp85reQagcBb
Q/kXZGsBWjlR3pyIzH2JymfWt94nCp7/vYitM76i5/Hs93E6Bgi6IsQPsiCz4q5S
r427iM2i8B/X4vdgao17bBIhaDat/PXlNjLMrF63xLliCPfy
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6qRF5lUqGmYLiCtwzcbX
zrOYZJYrd6cFRRvvivPVUiQsPrVZJrtGw3APe0pXvSl9wnX2bW9+Sff6nJG8rMO1
plLD7YxpYkuP6QZiYmZ6lMYYfD+BnVb/N3TIN44pD27JGrAZKxh0x3JBqglxKlaE
mUA3aPfxdbRRgnkK8UOy2d8QhIPHep+H6NchgbNcnGkHujsdjasnZWtDSi8DMlW9
PoWRMCCI6OKI32d3ya9aLW3Z/Wu9SGQgYNXd6kqxOnT7utJddxnwBAUQkUsb8tpk
+66f414wSGTh42CJ1nDmOtviIfz7gJo1ZMd9r/nLDoFijakxjQGcJ3iiSXAO5SX3
zQIDAQAB
-----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 533464871469115744782905232449738110067329
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R11'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-06-06 18:27:13 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-04 18:27:12 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'wateriq.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
 . . . . . . . . . . . . . . . . [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 29620769420102338783161804214319407912971657231098416737224616378257567732931942921423016316788431090799477252258697912001248613846703607667188908767675621551197013772131719358586008254402675443647156452599135443505856617619194800469977105586655810177807479048625953106440309743015185376594285921194992648123688736997734030597371936651842248313457945831041223119144631032911977966581393279770284232018206603190782985054904772422576023867320128972065773844822403930535020036269581731828584474491663503946973427543040436312288374170675721726775520018278657487131522413091812709213502878595628883781230695154493350606797
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							261f0662ed29be589440673aeefca17185c89e45
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName c5cf46a4eaf4c3c07a6c95c42db05e922f26e3b9
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (30 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'wateriq.nl'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.wateriq.nl'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (38 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r11.c.lencr.org/2.crl'
 . . . . . . . . . . . . . . . . [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)
							00f1007700ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db00000019746b4ccec0000040300483046022100ac94724dc5a199b21cb2e0406a1f335824a95051b52c4ce1fd53e4698ac9d95f022100d8c43c3f10a31b3b1ce56a127ef99381cba0fe03947ae1566ab6aee07b62eb860076000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa340000019746b4cce00000040300473045022053e62f934769fc3a9f95b5ebfdc34c5b685cb5a60ad663b78473a8817eeeed180221009b84c3314082b26087c2b0d3b611337852822d34bea6797b36a17d66deec0efc
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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