www.oscotech.co.uk

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:32:35:cf:12:53:74:29:1c:19:71:32:eb:15:8c:2a:41:a8 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): 03:32:35:cf:12:53:74:29:1c:19:71:32:eb:15:8c:2a:41:a8
Serial Number (int): 278422500402249240677830911307750016958888
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 35:01:a6:bc:bb:5e:8c:63:37:c4:4d:3b:ed:3d:c1:9c:89:ce:5e:ba
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 91:79:8d:f5:11:45:61:32:cd:17:46:95:d6:7f:fa:8e:8c:f9:5e:bd
Fingerprint (sha256): 29:27:02:f3:e5:d7:c0:22:5a:b9:a2:e8:de:73:2d:44:1c:86:d3:98:ee:b0:4e:6c:69:bd:08:35:05:1b:fa:ae

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 278422500402249240677830911307750016958888
 . . . . . . . . [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 2020-01-31 15:33:22 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-04-30 15:33:22 +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 591694774017233819576518284500487740440407369518414404007078241234738573792844914198908191023289017210543645246615662454694301885186532635878981158740666545465905242327895743364290803757137790446895743623847779553582780817710682190185756345360536677657063440145691052342812146156400332839018054517160082634619994026182215472432418200324663081255435520322823965808472713801629600884316138328875610146990398553508261792679218227911329594107108775120244961214657366420850346349062329760012585827400951592749114269206818426707582678320422569388009609872336085853441871362969953328258809920784369829847975158256666380339227933442513456849168129304596101158576105562720174360042989504541049224084760042770356353133173671029409939379470581624545771426609135391512970640542101878983702541879247164989270246319055251159988750300472394804946687191347431731130227179023432511064967997023075576241460284017413237689840406047490337450414606970537718787708758499803766800924336284816198281226199882492349921715138635922740260556189757617627186076007269674537762271391118218304544266084698824975259169605923413024751587239246564918923590912794524186379168897205784304772574347580352337491188412163300737414146347350426752827827835162235749904880747
 . . . . . . . . . . . . . . . . . . . . [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)
							3501a6bcbb5e8c6337c44d3bed3dc19c89ce5eba
 . . . . . . . . . . . . . . . . [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)
							00f0007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016ffc73264e000004030047304502204af4d97b5beda595c0df04e8549bcaa8363959100c18d369a811d817cbe0b943022100ea7fe36c47b5a8e1a181de7f6bfd44ab6c77b9c3f853201c6368e4b8932662460076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016ffc73265f0000040300473045022100cfeb5f9eda1b5aad21288cb171d1df4027ab0545f4566468d47bf605abca51dc02203254652492707805fa1b04c48b684773d0e75f272dead65eded5f33a192f68c4
 . . . . [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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