gtcore.ca

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:81:56:2a:a7:c9:87:d5:ba:d2:e9:33:53:d8:2a:95:30:24 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=gtcore.ca

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:81:56:2a:a7:c9:87:d5:ba:d2:e9:33:53:d8:2a:95:30:24
Serial Number (int): 392460104147076912936073386148699598827556
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: e2:79:98:41:52:25:c6:3c:4a:48:b7:6d:13:4f:65:ed:90:6b:ab:94
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 4a:59:b7:5f:6c:a5:25:d3:cd:2b:9f:02:66:2c:18:d1:4a:7e:87:d1
Fingerprint (sha256): 96:ba:e3:90:d2:1b:54:ae:5b:de:f5:a4:0a:4f:bf:d4:52:d7:19:08:62:f1:f6:9b:09:4e:f3:b2:94:0c:e2:80

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 gtcore.ca

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for gtcore.ca

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

8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

gtcore.ca
www.gtcore.ca

Other certificates including the domain name gtcore.ca

(limited to 100 certificates)

Certificate

The complete raw certificate details for gtcore.ca 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 392460104147076912936073386148699598827556
 . . . . . . . . [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 2017-12-10 11:51:14 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-03-10 11:51:14 +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 'gtcore.ca'
 . . . . . . . . [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 658800316456109171353956772710597112502895212888188888867234545589790379552808584436130830717401835627298931493379165396590057752619239007805031714772277803212802366417801619416098224411338175045032199496873326214879152709659204430605590080510453989549296794188605603874318497551487750914390739883960516370001764958560740237409210966648363275968457381968599621194794230129633519348726514212070508190521816268999527713825778093533908154192359246189872925734006006348998851121598522529432571794459784436078248820845038873361063574340186751622339857231008814164393709500435107200067848562521407533390503395338194020541458184680847516902718719174608349134988428889583463576874094839754127138206008516607325608368944039399202093507430113916523509215743268772968564275238892839037466567425092797477536449550646147999840920357151167778623244932617282834070731456236527488912745348779013877285754478077454355346510227478138171310232871317076880545200468730510051395204743325193187376345506106803028242399553803373983336557915570252160142832568791220988762713283915484313373359029689142127354161522071902339999264063871042827326159563564023228906228000757905036982022343121790964197360370021348804644039523135340458857316626106624159749318121
 . . . . . . . . . . . . . . . . . . . . [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)
							e27998415225c63c4a48b76d134f65ed906bab94
 . . . . . . . . . . . . . . . . [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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'gtcore.ca'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.gtcore.ca'
 . . . . . . . . . . . . . . . . [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 (246 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 1.3.6.1.5.5.7.2.2 (unotice)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/'
 . . . . [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)
		001c934b82d56190b9b3b705bcafb2b08f1b31023fb74e80b3e7f89fa1748e350e651e4c50e6cdfd3ede06ba8ff39ef4f6a7538b281e872cb28f4912638add5594946d3141032db53af3d2aa7793aa8e3438250c0aab5b6fe9d6196545b61266af05626edd49cb50d267d107195a3256c25f171a558137b498173c4b4dc63d25f2021311f354b5bd5a1501975e7cd7c2d3e652ee8fef612cc83255200c66201780dbb3ce86b86fe298a59ab0fc3b3ac3d333576c4b93ace3ed11c0eef1ba51650fa4dc78d3010c8795580c364a655c4b2e3607e0a13bfc0849d09631b65d5f19dddb8326aec4f6e51e7d715f5f393b1095260f78b8eb1b0e23d2978ce13d40c7f8