niemen.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:3d:5f:23:ec:ad:f7:7a:ca:fb:3d:ac:d1:6a:19:a7:42:e0 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

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): 03:3d:5f:23:ec:ad:f7:7a:ca:fb:3d:ac:d1:6a:19:a7:42:e0
Serial Number (int): 282220545367879331759720831930358110307040
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 47:20:69:34:f9:9b:c5:98:7b:6d:66:a4:8c:9c:ab:27:4e:2c:36:f2
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 52:33:92:3f:82:e8:c8:f1:87:c4:7c:d5:29:07:98:f2:22:a2:e0:ea
Fingerprint (sha256): 1b:46:39:84:cf:1d:ca:61:53:9a:15:36:51:f3:6e:72:65:90:18:2b:b0:8d:71:07:96:98:bf:c9:21:13:ac:59

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5A3kzgo868fY7BrqXcrl
dJydQLHLfpEVahjtLODiY8/oLqITpbp67H5RQYQ8kHtVT75bhMotZtiQYV1Mquf9
irhtXP9ZVuWFfRhLa79Zmfd8f4ZbU1c+9wJoHs+fjV+izT3ENfqBDRYrLj5aos2S
sGBsx++O/upNU57CAgUH1KjEWIgrJolNGW1Aqf8WrrqIpXjz3Ch7L9gl+IUYnWMF
1kQ7/AdQFP+RJk6W8niN4alvQaPvTgdWr7GliUcy0bwhqcinPjOI7Une3nrB9I6X
SZWA30HWbRPf9Net5cfkvrOQ7x7jLJD18kiS1i1qbMX9J1E0h0PFrFvptk8hF478
YwIDAQAB
-----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 282220545367879331759720831930358110307040
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-27 14:05:56 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-26 14:05:56 +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 28789184805066635682584840366960128779009521232875917626200912279876929843338504013957970513530302187023815401073899546212332991420495272005637004411569473610821799172023048152961227502860522114349415618156373844689535980885520353092715651165737328612665344371944445089912604560630435180391202241241256769035953112901376430514662874758956372945033010490392807349385957731506625632221221192974714142640626245050623311308551288433745076647692961899569110244015615587527627446505087937293261504736048568598171407187170085737517531961413880239886387159048192604911303433598319731840083436942043131340776426989560307580003
 . . . . . . . . . . . . . . . . . . . . [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)
							47206934f99bc5987b6d66a48c9cab274e2c36f2
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (69 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 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016fe789abd90000040300473045022100b260cf716006ea47369147c417ca6dfcb3d6def35fa239a5ddfcde79a86c5576022078d9147a56a878cf1ad3b0860685c122ae98baf6ffbf53d7a5b3fe8690180d36007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016fe789abed000004030047304502200c96ceab3ecdc1e6feca45069f6fa3c5a99f6e6e56fbedbdacfe76d15ccdcc36022100c1d3757918e55f6d6ac957bde4e05f7a4b9ada2ef392f9d7456c3d8e6b589eba
 . . . . [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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