energyduck.com

Issued by R3

About this certificate

This digital certificate with serial number 04:b2:d0:c8:98:8c:89:9f:10:c1:67:ce:0c:ec:26:8c:40:0b 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=energyduck.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:b2:d0:c8:98:8c:89:9f:10:c1:67:ce:0c:ec:26:8c:40:0b
Serial Number (int): 409296926015523796801793296066701742063627
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 2e:88:12:33:f1:7e:af:18:cc:47:3a:ca:be:e1:d2:64:da:a3:d1:e2
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): cd:74:6a:24:9b:df:44:11:0d:bf:85:70:06:94:af:12:1a:8f:c0:d5
Fingerprint (sha256): d2:b8:c9:94:2e:ac:83:42:4d:8b:53:29:2e:99:b7:14:8e:c4:69:10:f0:12:dc:9b:a4:85:b4:d4:40:11:b5:26

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

Revocation information

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

Check the revocation status for certificate energyduck.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for energyduck.com

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

energyduck.com
www.energyduck.com

Other certificates including the domain name energyduck.com

(limited to 100 certificates)
energyduck.com
energyduck.com
energyduck.com
energyduck.com

Certificate

The complete raw certificate details for energyduck.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 409296926015523796801793296066701742063627
 . . . . . . . . [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 2023-11-18 05:20:10 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-16 05:20:09 +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 'energyduck.com'
 . . . . . . . . [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 783396971160213159977220653245764365584185219459577854372836767013605642440041493404697416667838689983898935927664077511369716878029843508465041886772510527196305908948147277808038496202078771039931815722041387771672983512562433873683575704464390725737551139289100305136593271990329969963045485177455539356197030210466308687764727810956517444211214610316063848519667920060079591349877888769789267046667448293625169104058582966894779975045444009994946237003925272196298193541447093462637256815581390065144257935842068422862766369748549964426494029590623332657175806523874794035616773899426900016212970972137112318976299344248342954429757412549000364883746860138551365379508361154995773569407122977295888497030232445092745532531962418756534352843637370756244058628675883469906110361337998231721152612518048979789745365577732652594640937864287814367753698237566560496751819203417738525691791725164121012807959034301748727926690118592207096510513066419896439473335258196265950841999864431219142103594806394184788449453318939126111523340925423290740215957798407744578140621050376771180221473302352521228193869810515819470739591881917620922431225834022000694317302067088880868245828625489100201303854609501285973042137018434388637011721999
 . . . . . . . . . . . . . . . . . . . . [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)
							2e881233f17eaf18cc473acabee1d264daa3d1e2
 . . . . . . . . . . . . . . . . [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 (38 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'energyduck.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.energyduck.com'
 . . . . . . . . . . . . . . . . [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)
							00ef00750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018be116344e00000403004630440220215a960d46e994bc604d1a0d89406a86701cd80fe32c7ac1d3936727df277b0402201cb2b5feb35a94e5b900d7599682808064497a81644f3b9f88176a5528bb648400760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018be1163534000004030047304502210095c26e37bb879a93af152965270269ea27a3768b644a36246eaac5bd7caa4d96022057a827c38f7f824265b376daa752fb01b543b214011a674c693f5e270cff382b
 . . . . [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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