niemen.co.uk

Issued by R3

About this certificate

This digital certificate with serial number 03:d1:7c:b1:21:b6:08:92:c5:42:20:7d:34:27:b9:95:a0:d2 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=niemen.co.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:d1:7c:b1:21:b6:08:92:c5:42:20:7d:34:27:b9:95:a0:d2
Serial Number (int): 332621616473519864849322804681767636017362
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 3e:4e:07:d5:8c:5c:12:19:e0:80:5f:a6:3d:11:82:73:57:35:97:1a
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ac:6e:34:81:f4:15:1a:76:a7:d0:12:32:d2:2d:fc:50:32:12:fb:40
Fingerprint (sha256): 89:38:1b:80:99:67:cd:20:8a:32:83:9c:b4:33:d9:85:23:36:d5:20:47:c6:7f:eb:74:85:ae:5f:c1:f7:df:b8

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

Revocation information

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

Check the revocation status for certificate niemen.co.uk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for niemen.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

niemen.co.uk
www.niemen.co.uk

Other certificates including the domain name niemen.co.uk

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

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxoloG9qF3YtVNLU859fY
OsicSsBZ5Mqd+b80nPPs6W88+O3hJt9hQ/8KrshTY9gBwVtEUTHASuUy0PyKBura
No48jxeZuaJLlwUy+6JcjOMcH0/dVZRnKZrNwTQSF0GtKxt0UFFDz+BPko56jAnd
fJFqYIitjVg4k1Dht65DMurogh9sjYaxA7hskvcPLyJ9YE0AecZezNpKX96yEpod
EhWEWvZPrg/Qh9t6mtbUmk+LqsiT7gKV2h+3wyFKZHzwWuaLuXY2AD7bSrytbfto
F8qFgtaNrMP1/FEabKZ+FW6jnhaglCuURlpbfd+mYKfiojE5qT+b1h1SeCrVrN9E
MQIDAQAB
-----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 332621616473519864849322804681767636017362
 . . . . . . . . [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 2024-01-07 03:31:20 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-04-06 03:31:19 +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 'niemen.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 25062942140094345366067693973176270762889571765232543416492512185225419928106096412770512089733909178198944436083288454767941574218289727130668268339947470860012125702694567503309532684190600547755252200404772201374371636989808792965696239585665517122767429631573362360565993492273624508771618321210179840571886272608266667172700697575531653620357911234048560476035798595439493871219457729661044979721902781286567722634016488929466880057672303509607847846160974939005409772831221822364121698271849954221419055554788065228855495181236822539829272252029325560610627377778276217942484053765466724661879322449193243460657
 . . . . . . . . . . . . . . . . . . . . [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)
							3e4e07d58c5c1219e0805fa63d1182735735971a
 . . . . . . . . . . . . . . . . [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 (34 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'niemen.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.niemen.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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018ce23086c3000004030047304502202160d8416f2ccbe74100f06c20ec812c35b731eff5a92811c99d1a9ee4a80de4022100f5eb55f7714caadae6f30674c066d26011243c806cacf638784ab13e85b8f48c00770076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018ce230870e0000040300483046022100c109ef308dd00efb54e08cb6ab498404403bb4c045bf90e6f2036e85f8857be8022100fed3b1ab2324450a771816ed4ff7905ae35cdce6f35d880cf7c50dfe0860bb8e
 . . . . [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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