a2ztech.co.uk
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:92:6f:5c:4b:98:31:aa:9a:d3:5d:23:1f:2a:49:20:dd:1e 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=a2ztech.co.uk
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:92:6f:5c:4b:98:31:aa:9a:d3:5d:23:1f:2a:49:20:dd:1eSerial Number (int): 311166106897819638461615992691193559440670
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 23:6f:b0:19:3b:03:b0:9f:8c:4b:68:71:e1:ff:62:f6:40:1f:c2:8e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 52:89:f4:86:82:45:bb:5e:79:f5:cc:4e:20:76:c3:74:02:21:7a:57
Fingerprint (sha256): 59:52:b5:32:e4:09:25:5c:fd:ad:21:09:f1:32:71:82:57:23:57:b3:fb:40:2e:3f:26:19:0d:10:69:b5:5c:f2
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate a2ztech.co.uk
2
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for a2ztech.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
a2ztech.co.uk
www.a2ztech.co.uk
www.a2ztech.co.uk
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a2ztech.co.uk
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sni52705.cloudflaressl.com
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Certificate
The complete raw certificate details for a2ztech.co.uk in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFZjCCBE6gAwIBAgISA5JvXEuYMaqa010jHypJIN0eMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xOTA1MjcwNzUwNDBaFw0x OTA4MjUwNzUwNDBaMBgxFjAUBgNVBAMTDWEyenRlY2guY28udWswggEiMA0GCSqG SIb3DQEBAQUAA4IBDwAwggEKAoIBAQDG5XE7PR8h/5Oou1UxUhEyQz2q+twIdVQq u343xFoP/A9Ev2uHnpQrRAVIJ/0FpbaBGKL6lAo3GXQLShvPP61RlT+5VsCq4+JY BviCo/22eyP6RJ9pczDoJptzu4FtalyZbyAyM9O5GMPwLcaHcAVRJVQVo7deMqp5 2DOxsfyIKRQbXNsngM9nXXikNJmWj0JFF+PFSsenmDvTNenCBdePI2nOP2UHt6Fv HvXdhLa1l2sQ7t/rCKkiAoPHlUjnrMaIea35lXS6jGroxeGrJ8IkanZ0LYuliKUq QbIyFZcRZnkeIPbOkP4xG4v56tlY+/JSIJlauAB52l9gS+UWFhaPAgMBAAGjggJ2 MIICcjAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUF BwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFCNvsBk7A7CfjEtoceH/YvZAH8KO MB8GA1UdIwQYMBaAFKhKamMEfd265tE5t6ZFZe/zqOyhMG8GCCsGAQUFBwEBBGMw YTAuBggrBgEFBQcwAYYiaHR0cDovL29jc3AuaW50LXgzLmxldHNlbmNyeXB0Lm9y ZzAvBggrBgEFBQcwAoYjaHR0cDovL2NlcnQuaW50LXgzLmxldHNlbmNyeXB0Lm9y Zy8wKwYDVR0RBCQwIoINYTJ6dGVjaC5jby51a4IRd3d3LmEyenRlY2guY28udWsw TAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEFBQcC ARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEFBgorBgEEAdZ5AgQCBIH2 BIHzAPEAdgBvU3asMfAxGdiZAKRRFf93FRwR2QLBACkGjbIImjfZEwAAAWr4fA88 AAAEAwBHMEUCIChlG57S2CRAL8t2HRZcsdT7tbM4G833XnaErZZuvgOlAiEA62WK /vWaVpWdz8Co4709Fl1sD/TKpLxW8b3zP84NMEAAdwApPFGWVMg5ZbqqUPxYB9S3 b79Yeily3KTDDPTlRUf0eAAAAWr4fA4jAAAEAwBIMEYCIQC8xrYM66l0k2MeLl4f Hd3eE7dfv6mftgCUqnI0Y/T9ewIhAPDmQq/RAt+dPHDVp4Gc1CWe3XzmLjyX2Y6g m4LzXCdFMA0GCSqGSIb3DQEBCwUAA4IBAQBDRWgQpaadob3PM0R+w0JdNHSAehru 1lk+nnhXSUcz6Vt4OVtworALbg4/Fql8/4hXIrdh9SzhUpXTCNncS63eclU/MAfP 8h75Lb1CS4H8/xXSc4iO6a0lK51bxXGIxygk3YgGC+IkYOsjruVUWKQNcT3XXIGG Is90Ha7KXKUREhxePCGlcbgmJPKcF+vj5d46N3ZK3VsNqTZ2PXpZxiZCFOJijC/1 erDxI9KsZQjStfgUf8xRfXa2tK1gAn65+VK1HEGDqyi2vlccupz3xhVkUBhNZ3aC EsEqncsUMKSBioyglEEmOknmsjI4o9n9amFeb3hghq07uBZqkMvusRXR -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxuVxOz0fIf+TqLtVMVIR MkM9qvrcCHVUKrt+N8RaD/wPRL9rh56UK0QFSCf9BaW2gRii+pQKNxl0C0obzz+t UZU/uVbAquPiWAb4gqP9tnsj+kSfaXMw6Cabc7uBbWpcmW8gMjPTuRjD8C3Gh3AF USVUFaO3XjKqedgzsbH8iCkUG1zbJ4DPZ114pDSZlo9CRRfjxUrHp5g70zXpwgXX jyNpzj9lB7ehbx713YS2tZdrEO7f6wipIgKDx5VI56zGiHmt+ZV0uoxq6MXhqyfC JGp2dC2LpYilKkGyMhWXEWZ5HiD2zpD+MRuL+erZWPvyUiCZWrgAedpfYEvlFhYW jwIDAQAB -----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 311166106897819638461615992691193559440670 . . . . . . . . [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 2019-05-27 07:50:40 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-25 07:50:40 +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 'a2ztech.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 25108326603288622895000153726084345661230095209390299451072172796069674068095521406526576503884804802081087758812263098216033882450561139085342208847666233094646290847047824217651694633869562182905502970244050264449632320747490299271029913217463362043792997334767325762447287518630779196143514349514539485509493687195014003172316198975431881543234269989168385401996413803534633616871076676152905915518404465552056394211192410660121133673978196045142984091528196302174291011324055509265170731167049391855742168045175050824419952441215983358724761803191904642364231467205055003217332713253273438879278621923658832418447 . . . . . . . . . . . . . . . . . . . . [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) 236fb0193b03b09f8c4b6871e1ff62f6401fc28e . . . . . . . . . . . . . . . . [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 (36 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'a2ztech.co.uk' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.a2ztech.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) 00f10076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016af87c0f3c0000040300473045022028651b9ed2d824402fcb761d165cb1d4fbb5b3381bcdf75e7684ad966ebe03a5022100eb658afef59a56959dcfc0a8e3bd3d165d6c0ff4caa4bc56f1bdf33fce0d3040007700293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016af87c0e230000040300483046022100bcc6b60ceba97493631e2e5e1f1dddde13b75fbfa99fb60094aa723463f4fd7b022100f0e642afd102df9d3c70d5a7819cd4259edd7ce62e3c97d98ea09b82f35c2745 . . . . [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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