niemen.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:2c:67:c7:a1:56:32:69:2c:aa:5e:a0:a7:04:36:8b:5c:32 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): 03:2c:67:c7:a1:56:32:69:2c:aa:5e:a0:a7:04:36:8b:5c:32
Serial Number (int): 276447228962739896660642039380893386890290
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 9c:ae:2b:e3:e9:04:d5:96:d9:38:d8:99:14:78:7e:d4:17:b2:41:93
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): ca:fc:c8:44:2f:52:23:27:f1:98:59:99:b4:94:89:d0:03:80:74:9b
Fingerprint (sha256): fb:52:d6:2c:60:2f:3a:d4:8f:72:32:fb:25:61:1f:35:99:cd:43:f7:8a:c1:01:ff:94:c1:e5:42:ec:49:70:c3

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxWLNWFeo61Z9tf9Sxc05
4pSzGPQxBjjE3wjrw3Btxze4yGFhsrpAS2RTUjfD5oCCbtGrzHQ0JdiVJzIXNGvL
JLxNlz4idmwn5wA7vTEJCgr7B2Sq/wv6fWdeaQm9/rv9IiG3ztpK8Xa/mbhHLr19
8XQeyiPGzBT6Oq/zvVm33rQ1iTwObplqhC4YBepDVm/QFgzlDULfJK1XxboVFWHx
d5arzw8rShbW14jL+EDCxvlinfQfK8mKvGw5Yr8XvclrRk6pAGmu1kbO5qCme/rZ
DuTGYNtRZReRRlMWsEWZ12xj+z9VrDyxUY+s0z8NeuD4AFOmKktYo7S8LLvn2Dog
LQIDAQAB
-----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 276447228962739896660642039380893386890290
 . . . . . . . . [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 2019-11-28 15:03:45 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-26 15:03:45 +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 24917667224107891640209859075453879452700564161016053714184967732416145252245781070661556638394673319633074436901601825035715923387607831697449630120935808156671459815880239979684775319816062279210984677866433237521331792395589152670064016296345896376799828848993940362164117819610379007292575213200563509338698206780799146389693559745055954604364466756244925721208688396284942242764168703518240371694109946984132854190685124826648244734565672231486255382193931288616887015506633806069124295446163026358314588264828772462235358287701189419933731167992484458205925143604449283595088402174555892600230113204386718687277
 . . . . . . . . . . . . . . . . . . . . [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)
							9cae2be3e904d596d938d89914787ed417b24193
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f100770007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c0000016eb2c10b140000040300483046022100bd6d93fdfee4b326452b70a67f71a11aae2485a57c900fc31e695c426cd7ddcf022100afd561b14390e1b64b3c55bc34ad17ad36cce774147fe173b43b678b2dabc0f50076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016eb2c10c0f0000040300473045022100875003e592805a8e30e456250823026c6a8d0cedbe4d0df839518a0d4984c155022025dff39a279e153df98932decbcfe1759b6da9c94e8c0aa972e4860d4fdaeda1
 . . . . [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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