www.oscotech.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:18:fd:ce:d2:8b:18:50:95:64:45:74:29:c4:65:7c:19:3e was issued on by Let's Encrypt.

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=www.oscotech.co.uk

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:18:fd:ce:d2:8b:18:50:95:64:45:74:29:c4:65:7c:19:3e
Serial Number (int): 269841003167795961369445927986821420816702
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 92:49:b7:ca:09:d2:db:cf:8c:b5:b4:6f:82:18:1b:87:28:f1:5f:ba
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): fd:5c:93:fe:d5:15:f1:33:22:c7:1f:8f:a8:35:43:d7:f4:16:af:20
Fingerprint (sha256): 4d:7f:84:b7:27:34:82:d6:42:ad:b3:71:bd:35:b9:5e:df:a5:63:fd:d1:ef:f5:60:17:6b:3c:ad:f3:ab:7c:df

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 www.oscotech.co.uk

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.oscotech.co.uk

Public Key Algorithm

RSA

Key Size

4096

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

www.oscotech.co.uk

Other certificates including the domain name oscotech.co.uk

(limited to 100 certificates)

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 269841003167795961369445927986821420816702
 . . . . . . . . [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 2018-12-02 07:05:07 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-03-02 07:05:07 +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 'www.oscotech.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 (4208 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 737242032612661025423020460348241567582817580630575799070830980915121115082397261249601882904786589324781067128102057000677902981859890546165651060517518120509174364192535866107101805103130736295204027790346210408762466891880601480530704380890142028390563031938780963655120205463172966903349217538377931203539216717997598701532682851887851566658796508539699417942899009659505384066770409593945092079424321989496060395922967860200521499295143653721663804041207554597475831368187886538958310600773642988719119025464567681415587839602529991603093355404785826383698508585253046614407798757907908747925235524554323735532669994905883254728733436888762318274239103979968992078642729089268019424106309511335939055421371131745678283071667544301479281551122253226266884016753707895846361387770048467024400911734666096990456019776219332119940881919510259619958383332964384846508899306449374526202918145349125395231451319358158139115153027340103445100381544595537157077959561830359840152488917250080230061675310987693937087442628685724336391008715036279887462934799892763765498567321728952473772034557270386885097622275994826624430740215539541819207708664434858979703950037585116743393722150266542031631552949676821576228938750942733603150847243
 . . . . . . . . . . . . . . . . . . . . [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)
							9249b7ca09d2dbcf8cb5b46f82181b8728f15fba
 . . . . . . . . . . . . . . . . [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 (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.oscotech.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)
							00f0007600747eda8331ad331091219cce254f4270c2bffd5e422008c6373579e6107bcc56000001676df317a4000004030047304502201f7ff64836f20d11352d43c637b54586aa730670c3c85e2d71b775f63b5b4d84022100c6d2d1870fcc7ce09753eb121a8a1febe3cad87a934e78a78d32243e62cf205100760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d000001676df31988000004030047304502210080eae465a0333af3e57007f704748d637a27de1360833f5ba8a0cc6649a74da1022006e7906853b6e2d03c7c482750270518875c6eb0a917eef7c56f71910963fda5
 . . . . [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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