www.oscotech.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:6b:24:b1:5d:09:69:2e:a1:96:6b:c1:42:85:98:9a:01:45 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): 03:6b:24:b1:5d:09:69:2e:a1:96:6b:c1:42:85:98:9a:01:45
Serial Number (int): 297795844187223072068296020338855386939717
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 6e:22:be:89:20:f5:0c:1d:c9:9a:cd:cd:22:fd:0c:70:2e:a6:5d:5e
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 72:91:ae:3c:e3:bd:f6:5b:4b:1e:32:7b:43:36:9d:e0:e4:3b:bd:c3
Fingerprint (sha256): 08:44:61:ef:8a:fb:7a:93:0a:36:30:9e:3c:8a:7f:a3:18:47:3d:12:1f:07:3f:04:95:15:f0:6c:a4:61:ac:ca

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 297795844187223072068296020338855386939717
 . . . . . . . . [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 2019-01-31 07:05:08 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-05-01 07:05:08 +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 685588125915068830134307183714092438604863513684384771459134890724391144289405448332330081834495647979570654634007102188825180334524524555851781749610919800527958440003518454604645360910415664974648985540421744594245624142305103526695215238310291304062781964583082908083430597831691909252163705364164053789302950982348491522986573945512903611498744625084461473223453045875862296705999849170000488433141711872118289141611140108833449782072158044883679227776428885274032267180005442689367710842397113236218068623332505580078851525548877867362311510015507026956838619431864667161573986918034221771462908644335676494023567431472307835670255854704026855693312917085251458378837452738751065029774699925749953402451955198820130993290464983507720854585562430845639860054987179423255037956833874905157254599401453121042370059407143163520906925264071223054004024933170303754331550759654593317772795943688519370094170374025697391061721697782961548934346167690492003827562743670759800702955937714546519905179637668495898540607490043909630463525914221497633710956494168576030879546887241012002609492178490374671405627706155166206720063122142078145362865453315953685334203872510602659480282382932900392654546438978883594126136777543598863965956313
 . . . . . . . . . . . . . . . . . . . . [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)
							6e22be8920f50c1dc99acdcd22fd0c702ea65d5e
 . . . . . . . . . . . . . . . . [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 (243 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (240 bytes)
							00ee007500e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe00000168a2f0ab93000004030046304402205c527d15bcada876c37a600e2e1acc8f9ed28ac348d786f4a826d22712b30fe40220681f9cb3dbcb9a1454ebc85b6f4a94420a3400a3bf36376f4b22738e6ee48813007500293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f47800000168a2f0add90000040300463044022037d6b18e8ec55c9ad0abc5ffb7adcb70ec00b36a16e58071605f6a6706ad721502205fb4cd9577fe16f56df733029d06169547a52c699bce12a186fefc335a1bf55c
 . . . . [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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