hartsoftware.co.uk

Issued by R3

About this certificate

This digital certificate with serial number 04:21:b0:d8:4e:a0:8e:6e:ae:26:5d:c6:f9:b2:48:ed:7d:82 was issued on by Let's Encrypt.

With 4 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=hartsoftware.co.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:21:b0:d8:4e:a0:8e:6e:ae:26:5d:c6:f9:b2:48:ed:7d:82
Serial Number (int): 359913529093560080359932670033970489818498
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 2d:6f:ac:94:e0:9d:c2:49:c9:98:3c:c8:57:9e:48:f4:05:03:3f:e6
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 6f:f4:21:f8:c6:c3:92:c5:d1:c2:1f:6b:1a:8a:21:5b:86:d7:3d:8d
Fingerprint (sha256): 63:42:3f:ef:34:b5:9a:94:8c:0d:0a:6a:83:57:04:5c:02:63:3f:3c:6b:93:de:58:b3:fd:7e:e6:37:83:e9:6f

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

Revocation information

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

Check the revocation status for certificate hartsoftware.co.uk

4

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for hartsoftware.co.uk

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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

*.hartsoftware.co.uk
hartsoftware.co.uk
hartsoftware.co.uk.davidsmedley.co.uk
www.hartsoftware.co.uk.davidsmedley.co.uk

Other certificates including the domain name hartsoftware.co.uk

(limited to 100 certificates)
hartsoftware.co.uk
hartsoftware.co.uk

Certificate

The complete raw certificate details for hartsoftware.co.uk in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAo/FFgCdExjuKKyz9oX1D
mgAUJ9K/S6QEKz3k4UXWF2lLKWe7UCrBltKzg8VvSUN6irZm+eNHLDB9nlU9FbSG
6nAzs1wFxkvkI+Kd9HkVWlmoi3GgJdgeJt0KUJpQHNWk5SmuXANqD9bATVP9qYjB
qmJh8GpjjvtbYeGhRVs0O3PIuy7w6Ub1SKjf53b8vU0TwLHBrNM0eVj3KwD2f/39
+ZpYBZl0TzOcGMmQWGMeSQm1EkxSztFewX6M9E9HSuT8oGeaw25Va9HboIeXVSDq
v2dCOIWV45s2CHSKntMHY1FEb822U659q5CL4Tz6X6N9M3d+w4N7ENDQW/cw+CZ7
RQIDAQAB
-----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 359913529093560080359932670033970489818498
 . . . . . . . . [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 2024-01-20 00:11:29 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-19 00:11:28 +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 'hartsoftware.co.uk'
 . . . . . . . . [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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 20695819113841061316667584139955947390269471453718438309465446960033254915840818261788449109876862487523746317573399151018608842172356482970612042179459772381779425783603838220349986922360844968109468831109271897011979904910469278968173932094669423676614759814826732188445478586141127702583055076622101101918169661304897091396494305848447790508487595467838996754027226068195191483500810567643070653900190826427911384896018189431203002991666790695645541040759401077683168486070182949208755716388635880573136122851770730442824174128359479789337872897206032303634760086679761042583629714575210042674017790767123080313669
 . . . . . . . . . . . . . . . . . . . . [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)
							2d6fac94e09dc249c9983cc8579e48f405033fe6
 . . . . . . . . . . . . . . . . [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 (126 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.hartsoftware.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'hartsoftware.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'hartsoftware.co.uk.davidsmedley.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.hartsoftware.co.uk.davidsmedley.co.uk'
 . . . . . . . . . . . . . . . . [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)
							00ef007600eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018d246c3e200000040300473045022100b1d2d2995f51334c355771f44e886d7fa152662e2a37691c8cf9829ea9c91e4a02207281e65339aa6e58df79c5173c98a69b99d976acdb401f17e4481c850d8ac719007500a2e2bfd61ede2f2f07a0d64e6d37a7dc6543b0c6b52ea2dab78af89a6df517d80000018d246c3e09000004030046304402201bf3b968493b6d5459957154f3495d695015afde67df444b26b668e605f63556022008475c531637bff3a27543ec8a332307638dfd083b1bc97f8fd6325e75ccfef3
 . . . . [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)
		0078355c37b6c7cf51858b9a6071ee1ece634cb53724a9dc6f442303405186b20cb4330ca8409b06e3319b38096a76e8370b0d3013ffd6251781fd323f65822e0139bb2149e22449b6d6adbeac91a3d19a173594e4e601e51ab666c02dd73fd4d295285f8c3bc95ca7fec7bd7b5089d4a34ced32c44f4cc9659856d076276aa9d38854eec7a3e75f6fc068bfc218f5cd8b10cfbc83fe44e351d7c773ca1239deb949f5b05ba206bbb905d90321909722ed993937dff606639b9d0492efcc163f3bcb014a0b98add1ca63b0e39b784422035771dab2f0f562f65b314b658862f346c0a0970e230bb1f624bae834c756eb6332fadd2bfee96f35bd8b070c860849bc