mamaer.co.uk

Issued by R3

About this certificate

This digital certificate with serial number 04:8e:81:94:41:c6:b4:2f:6d:b8:3d:48:24:66:24:34:a2:9e 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=mamaer.co.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:8e:81:94:41:c6:b4:2f:6d:b8:3d:48:24:66:24:34:a2:9e
Serial Number (int): 396941480035305130754989249651518966375070
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 23:b9:b0:0c:c0:cd:66:d6:d1:fb:54:84:2d:ca:aa:d1:6c:7d:84:7b
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): c3:fa:ce:10:74:4c:13:6c:b4:b9:ab:4b:21:1f:14:f2:8e:95:67:a4
Fingerprint (sha256): 0c:73:92:3f:dc:29:2e:86:d1:bf:66:ee:30:ae:d3:af:a0:07:01:e1:ae:09:2c:a6:b5:cc:77:16:62:cf:d4:40

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

Revocation information

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

Check the revocation status for certificate mamaer.co.uk

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mamaer.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

mamaer.co.uk
www.mamaer.co.uk

Other certificates including the domain name mamaer.co.uk

(limited to 100 certificates)
mamaer.co.uk
mamaer.co.uk
trade-winds.mamaer.co.uk
ban.mamaer.co.uk
mail.mamaer.co.uk
mamaer.co.uk
mail.mamaer.co.uk
mail.mamaer.co.uk
mamaer.co.uk
mail.mamaer.co.uk
mamaer.co.uk
trade-winds.mamaer.co.uk
mamaer.co.uk
mail.mamaer.co.uk
mamaer.co.uk
mamaer.co.uk
trade-winds.mamaer.co.uk
ban.mamaer.co.uk
mamaer.co.uk

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsapeOtBPceH75AG+aCYk
1BwWl6H9rbmVEZPfU8D4DtsaMFvYvWQqWMdm6Md1QtvOArpMsBPa9KX51MkFsNKG
m8YasdHvULOdo7+bg0iZJxLq4Bk+1WV/RcNAi3GeP0oLJT9G7Y6HyoG6v3BGia2W
DlIuzZiM0m2awxlllz+lnNrjbR/le3sZeemnU5AhI0NSXCdZawyXA1Wl5iAFQsYe
WjCp7n4S8jPr5mzPUCMewk4UpmKubBjDYqFXHEaGerZYkj53yZKyQakFsji63IZz
8KXsWQxaCWB855pZBFrO3mCgzKAu2aFX6yYWuiyal0iuegZ9vPRPoEmblZdznfQx
zwIDAQAB
-----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 396941480035305130754989249651518966375070
 . . . . . . . . [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 2023-09-12 17:32:41 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-11 17:32:40 +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 'mamaer.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 22428191612825873858686726258700076172629571304224810101874221937905374501383967208168147021502856543926263168906848447407136932945990533508736140881873128384366675304861406694284123584869221198329156098515498275870257503602141516823268383414967823615571988179039520877108399719813130941063803603226981970818332607021342188303799755934504462565071751083700094375137911753397308714162067505238426803025048181549856459435408584109501938100385256605374840492216813876237370100351486660464500295510024514012468752998420573079430356838269993240019602049083128236789787113560720953221117820550945664450918414379666772341199
 . . . . . . . . . . . . . . . . . . . . [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)
							23b9b00cc0cd66d6d1fb54842dcaaad16c7d847b
 . . . . . . . . . . . . . . . . [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 'mamaer.co.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.mamaer.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)
							00ef0076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018a8aaac61b000004030047304502204b85b8127dac4594e28ea5969ad680520b1564c2796af2e729bedde4342195e9022100ce54621dadd6f0db542bf258a761c8d10cb0d0b8da164e3f3804634228e76c07007500e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e0000018a8aaac60f0000040300463044022078bba9caa6b278d7d4945087a028b07add778c460ac30630a099c8ceeb50f46202204b2850d1276e627655c4d8f13284223b614bc023a9d6054e468f7fa0d4e067aa
 . . . . [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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