mamaer.co.uk

Issued by R3

About this certificate

This digital certificate with serial number 03:f8:cf:b1:4e:13:da:eb:52:aa:7d:e3:3b:a3:53:5b:21:87 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): 03:f8:cf:b1:4e:13:da:eb:52:aa:7d:e3:3b:a3:53:5b:21:87
Serial Number (int): 346002955606945953521658986502494449508743
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: ac:41:f5:6b:b8:bf:1e:55:c3:c8:31:8d:3d:98:47:fa:a9:5c:8d:e9
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 29:56:71:ed:b1:96:39:c6:28:c2:69:dd:d6:d2:a8:c5:52:07:21:d4
Fingerprint (sha256): b5:3f:bc:5a:4e:c1:bf:59:44:37:fe:a2:f9:e2:dc:e9:d5:4b:14:84:27:37:78:81:fd:f6:1a:dd:c4:d4:27:6a

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-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyKxZQ8cF4Zsjd8ixTSMt
0g19UeNsr8UprizEWCdzek2QbR/H48Jya0Z5dn4e3LJjyTqzoA+ALhoyRtfKD9DZ
gU8ifRRX5ZtFF09MmBld1Dotzg9RzfDHzC8oldjkNUNqUijaxL3zxsBKq2O9yRWh
ebZx3IO8EEHx9eLGDbcBZm1MaRzLCMQ/Rq+iAKeTXEiuwVSkKVqYNAnMauQhLEJT
bj/dUFxD/7hbwXtSZx7Umy8/Pgpis/vDqoeK9560xRm/gAB+95mwaVsVFCoEiK5S
03jHud66DNmXYuo6SKv7zlKYXFlnxxuQSX6YfnT2cUgGeYdp4nXVRSXWH5jnNzSR
WwIDAQAB
-----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 346002955606945953521658986502494449508743
 . . . . . . . . [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 2023-03-12 11:21:54 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-06-10 11:21:53 +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 25332649300030962628884340628326774240261446489100174827218438673871610057420894113133094364809516203424706463540646603025810309846508030302909462407058123190853400403876335553035620132708383043762570879595220104929868970374764491632706606574143970750968218121510996562209097382060080409102934724584814998373147792058172166610497922527532168560123854998115716400230622771522796798192094520769924929032052720325578150926520508228916419691585228533175169279248477834464669285046121094937945747400712305924243111819263161260863273339449975237433850146901899525320825287862341732319788613798669027606500377340843736207707
 . . . . . . . . . . . . . . . . . . . . [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)
							ac41f56bb8bf1e55c3c8318d3d9847faa95c8de9
 . . . . . . . . . . . . . . . . [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 (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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb49900000186d5c52b98000004030046304402200c1c335e5ea199096ac66a3e453b13e1f47f2449692ac9af5d6a1dba422f181402202c6d8282fc7fa02651602561c0b37063d9e1f69a204a68c8e2df0890a5402d650075007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000186d5c52b9e0000040300463044022079eba10682b1beea17dd9543ae37a9fb59fd67f377945f1cd12e8ba5747029f60220337d58c68e8b71ee79e98f7f1196421e44e55fae28d256f0d901629104a2ced4
 . . . . [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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