DV SSL/TLS Certificate for *.once.dk

Certificate is witin its validity period

Issued by Let's Encrypt (R11)

About the *.once.dk DV SSL/TLS Certificate

This certificate with serial number 05:e8:c0:f1:f1:06:16:90:6d:5f:1f:6f:eb:b0:20:18:57:df for *.once.dk was issued on by Let's Encrypt.

With 10 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 *.once.dk 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): 05:e8:c0:f1:f1:06:16:90:6d:5f:1f:6f:eb:b0:20:18:57:df
Serial Number (int): 514763406791735634224843318145057642010591
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: c7:a5:da:fd:e1:1c:c3:d3:38:3e:d2:1e:da:4b:d7:5e:9d:4b:21:a6
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): 45:06:39:18:92:d2:3b:64:2c:59:11:10:53:57:45:6b:f9:ef:54:af
Fingerprint (SHA-256): c5:ea:dc:a2:4c:62:13:f3:ba:89:f7:bb:d3:c2:6a:83:06:af:00:ea:fc:c0:65:1a:00:5b:b8:87:38:96:1c:da

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

Revocation Information

CRL Distribution Point: http://r11.c.lencr.org/96.crl

Check the revocation status for certificate *.once.dk
10
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

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

Subject Alternative Names

*.complianceholding.dk
*.hertzjensen.dk
*.korvahertz.dk
*.leddet.dk
*.once.dk
complianceholding.dk
hertzjensen.dk
korvahertz.dk
leddet.dk
once.dk

X.509 Certificate

The complete raw X.509 certificate details for *.once.dk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoqGcTWQHU6SD+/cXEvxu
pLMOKR89g6M4SUUb5WQHNxp8HtC0+dJEYiyDq6KFXqolHvOt6up2+PhbgiEgvfXe
CZo3aYgUPqdJ9/ObhNd735UPwYGvXMiLcHVuzhUoDVdOJCphbDPX1J1zcX/Xu9ZT
a3WxdveenwcWHmD6yETZGN0UFMXOG1xB2qtqtQSwD5vn6OmO8YkNB/tbN7nEmvu2
687ZtwGba8onGyKmH9oM7Njp//+Ct9OBoQ2Wh2W6wetU28t9dBW2dYaTpoyp4sx8
nxZOoHok683FFdJRmVgvhT4Luo6cFYIFA+UHlQIorAAYxGGq5L6QJvhMoYx0AbVQ
7wIDAQAB
-----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 514763406791735634224843318145057642010591
 . . . . . . . . [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 2025-05-07 19:37:52 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-05 19:37:51 +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:12|false] UTF8String '*.once.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
 . . . . . . . . . . . . . . . . [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 20530298539814156090369106666302594760039498021791480130460798556648998222684743100686942963416304662298033144088485152689782231229795000565652746219539513487567190765892513576876785382059141462821863151632679060851716181020954399895152812908568044171329109651110993938058950485198397551985064727876303258577947996605614169130674141243433831727829038467142405368651359734230146342008411321613578546156383656778796401488872473380650504342823426505862352264493235509724367456282978890501343288800571174614366435243035581035801938198999709021963359541984554176449531101235430141077299541564493580135522854965629162967279
 . . . . . . . . . . . . . . . . . . . . [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)
							c7a5dafde11cc3d3383ed21eda4bd75e9d4b21a6
 . . . . . . . . . . . . . . . . [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 (159 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.complianceholding.dk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.hertzjensen.dk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.korvahertz.dk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.leddet.dk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.once.dk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'complianceholding.dk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'hertzjensen.dk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'korvahertz.dk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'leddet.dk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'once.dk'
 . . . . . . . . . . . . . . . . [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 (39 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/96.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f000760012f14e34bd53724c840619c38f3f7a13f8e7b56287889c6d300584ebe586263a00000196ac76b1bb0000040300473045022100dc71e689df971591484fe0a9d55e3e32f2ddfa9ca29cab5ce6ea5972af88b09b022008ba8dbdb03c2489bae5a53b3a00e38e700e0649af672771471dfaea660725f6007600af181a28d68ca3e0a98a4c9c67ab09f8bbbc22baaebcb138a3a19dd3f9b6030d00000196ac76b4670000040300473045022100e7c3cabfa2df687085410daf0bf406f69a7023d0c1d9952406d37dcd7327ede80220222c2d626f1da04f1623634537db608d8e064edf4eb34ecc09f8ae9f1b6063b6
 . . . . [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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