holdur.is

Issued by R3

About this certificate

This digital certificate with serial number 04:9e:16:3d:af:9a:48:5f:fb:c7:4b:7f:91:f9:e3:e6:be:9e 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=holdur.is

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:9e:16:3d:af:9a:48:5f:fb:c7:4b:7f:91:f9:e3:e6:be:9e
Serial Number (int): 402243321008210119211287372013173293366942
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: be:2a:9c:73:37:07:e8:61:1e:64:81:14:9d:ee:bb:48:26:34:7b:12
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 1b:0f:da:df:13:8a:79:a3:12:93:c6:b4:bb:cd:a1:2f:e0:b4:e5:db
Fingerprint (sha256): 5b:95:18:e9:15:7c:4c:70:6d:09:86:6a:bf:80:bc:0d:23:b0:42:7d:59:0a:d9:cd:dc:19:ec:4b:45:a9:63:e8

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

Revocation information

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

Check the revocation status for certificate holdur.is

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for holdur.is

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

holdur.is
www.holdur.is

Other certificates including the domain name holdur.is

(limited to 100 certificates)

Certificate

The complete raw certificate details for holdur.is 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 402243321008210119211287372013173293366942
 . . . . . . . . [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 2024-02-02 02:55:04 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-05-02 02:55:03 +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 'holdur.is'
 . . . . . . . . [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 846178154963727866738262662186913054181679299773849893060106348018540256162526682421042220952265440413210255889644036390670031736248579322293742628839670336897186200260605262480131930890891134392769977298036072700661830212379987393667755655552019901352468756261835728437668395499685876417782558951883464669462090068479399086702527123947705762957842380259097323697662082995784343243589773307496589434453110427157826797880641457136704868943475004905081643416528713631121468612488466358713226314755838220771584371171477519676631396350279818481044006563462673438744250187038527230871157692433297308655808693730965735467449304524973464371192785345094217881052552006679032968620247056295236030855737535306366466647554297156275613571140365654629647261736285793815858024802847638629537483992566762053282101720159317676782343297329172309113240668710488984582678230009465253543205173962995223298126950304884445395781992106361972190230532780001733931258921052759538888117469709555775276028301336752698989384870467831523572458657905831211230703956920819559407615677285156076564611089525901286677407662767110464682573448280257349659433736073802025534705646204755222233911558833595424994509898229646528237620881751071094171980071544394329836371769
 . . . . . . . . . . . . . . . . . . . . [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)
							be2a9c733707e8611e6481149deebb4826347b12
 . . . . . . . . . . . . . . . . [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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'holdur.is'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.holdur.is'
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018d67f4ab4400000403004630440220787c55fa65498efb8fc3cc6283480d7a8e722999ffb82e73b3c060abb2009eef02205327f57ecc515a604acb1aaa79dfa33a0756aafa8cc02e7807347e049170ff2e007500a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018d67f4ab4c0000040300463044022050fe94ade8adbd49e83d2bbd565b50b948b9fbb92ef56269192c8dd07e922a1b02200f3a702f10f61fbfa8c272c02bb84f6cb5e661621b3d2800cb6f2cad4553544e
 . . . . [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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