holdur.is

Issued by R3

About this certificate

This digital certificate with serial number 04:04:87:05:b3:0e:fe:e2:6c:2d:60:03:a1:54:f2:df:8f:55 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): 04:04:87:05:b3:0e:fe:e2:6c:2d:60:03:a1:54:f2:df:8f:55
Serial Number (int): 349989748567379393006760416396071795658581
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 20:06:67:a6:73:bd:7a:06:37:eb:f6:2b:1e:d6:ff:c4:4e:2c:2a:d0
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): d5:60:0a:04:7c:c9:ed:c9:3b:e9:35:de:79:38:98:61:e7:e2:01:27
Fingerprint (sha256): fc:63:73:f9:1e:96:1b:69:c4:45:a4:f4:b0:39:f9:71:47:30:ac:80:97:2b:91:39:6e:f7:a1:a7:d8:28:2e:a4

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 349989748567379393006760416396071795658581
 . . . . . . . . [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 2023-10-05 03:01:05 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-03 03:01:04 +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 670585408018972886498945087549608086557317879516920997569337265053746811454213779753576278296396757091570705941596522261856758495565395833916940684010047062448629103879913527199346151675473767040485842916425528028404521330452205358978387587945707609879438085404097992660254439421538005223540453478745700388604920657135617589502506325319556412547988624882942291026439797494194725737335203429063606973407592387177028795222532903577470062373640903305495284953590350949905863253312508625755032266023939322889627022196799692253409247401143666708125667087091686343468611654400884101422181029509351774496688870321028364389553683239980242000931539661792005875054181428170740961722043785692594566638080568805897812608320172000310900590180114442128460509501203368881470153918872912641724276180307846537340619006104626409726729180724264746281485017071276996645990531152039841707829020059660061244339058382960780504822992147335803544722148657490144250150546630700046471749171056721857896127192594089400932309209168256652837297672431585070280678988576401598710595975666483981651599917358489646784573027352806610431381394444575149066779946145029934532027879716263530231392235052755172182565458177812087716921842382697453046145218606638606287316479
 . . . . . . . . . . . . . . . . . . . . [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)
							200667a673bd7a0637ebf62b1ed6ffc44e2c2ad0
 . . . . . . . . . . . . . . . . [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)
							00ee0075003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018afdff0df70000040300463044022050915de59743b12d64a12490351f64623b034acf837f895982fa1764b1b667cf02207e4d4a6087994591b447c0110d35389d8aa7211da275dba6ba8da1d0b782883b007500eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018afdff0e06000004030046304402201ebe3b67dccfa8252e461f3695e0d7878a0630290aba6827489f104f30d3e5fb022024c49cc8182fbfd9bcc28a2c222a5093b0f2a55aebb3bac3427b605895773c28
 . . . . [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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