visualforma.pt

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:e2:2c:8d:f5:d7:e4:11:63:e9:91:09:bb:ad:e4:75:d9:b7 was issued on by Let's Encrypt.

With 8 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=visualforma.pt

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:e2:2c:8d:f5:d7:e4:11:63:e9:91:09:bb:ad:e4:75:d9:b7
Serial Number (int): 425412181783139660479348760438433782290871
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 62:66:a5:34:64:bc:f2:0d:1f:bf:5b:0f:ce:ae:82:f3:7c:21:0c:08
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 14:73:e3:f6:e9:4b:6f:0f:c8:58:33:d4:d2:46:b2:70:05:06:b8:17
Fingerprint (sha256): d9:59:3f:12:53:83:54:63:f2:46:c2:74:88:44:f1:87:68:f3:d7:24:ff:ba:a2:07:93:80:68:fa:a9:2c:c1:c1

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 visualforma.pt

8

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for visualforma.pt

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

visualforma.com
visualforma.net
visualforma.org
visualforma.pt
www.visualforma.com
www.visualforma.net
www.visualforma.org
www.visualforma.pt

Other certificates including the domain name visualforma.pt

(limited to 100 certificates)
webmail.visualforma.pt
visualforma.pt
cms.visualforma.pt
cms.visualforma.pt
cloud.visualforma.pt
cms.visualforma.pt
cms.visualforma.pt
visualforma.pt
webmail.visualforma.pt
cloud.visualforma.pt
cmsmarketing.visualforma.pt
visualforma.pt
cmsmarketing.visualforma.pt
sts1.visualforma.pt
*.visualforma.pt
cmsmarketing.visualforma.pt
visualforma.pt
cmsmarketing.visualforma.pt
visualforma.pt
visualforma.pt
*.visualforma.pt
visualforma.pt
webmail.visualforma.pt
visualforma.pt
*.visualforma.pt

Certificate

The complete raw certificate details for visualforma.pt in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjZvdkxPwowECZFuAj0Y6
KSm7dRZp8UjnQ2ePLZBk5l88Mm4906PcUYH8yRIexf2GZ1xzyZmWtJ57hV3hbK0C
CTl2oJoCIfR0FMb1LIKyo463iq7YNpShJXjroxbwd6JFvb2LOGm08+VbDBLX8lZw
piiEbcHDeN49L9ucqbscaBP5Tbnysgh3nTa8um/LHY5VatRMYPjzPx6J6FoIeqjp
XZ70Zlrl/d7Q14y8FPDvoxbiCKy80C9fMyi5LZbxy0K2ctob3qX+Lr7uqAf75mnj
95rTiv8COXm2nmljuHYwJStqYrJato3zJRKvftWBgFfxpJOIrrOCo6/FZsSQp+aB
+QIDAQAB
-----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 425412181783139660479348760438433782290871
 . . . . . . . . [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 2019-12-25 08:04:02 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-03-24 08:04:02 +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 'visualforma.pt'
 . . . . . . . . [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 17876461155445919471601285247497908203071919561825875579521506599863821519915571576592926014063037372271382943996493662339052583582441767466160108587477323047641561989818780408607550548585737409703866989325708151584963900910616404833087052073385656457134079319818979886422125475996530218079124489274557091421953986820336575053456662921011345111032828963093129124811989122581187184399051756142923399245533539631567677764602765645142593578589675883842898227531210969791757503698062635540713000484354316348972294875559700346966372449847302022075790263129631944309397362105063982749699963271749798966327163254083672244729
 . . . . . . . . . . . . . . . . . . . . [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)
							6266a53464bcf20d1fbf5b0fceae82f37c210c08
 . . . . . . . . . . . . . . . . [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 (153 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'visualforma.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'visualforma.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'visualforma.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'visualforma.pt'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.visualforma.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.visualforma.net'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.visualforma.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.visualforma.pt'
 . . . . . . . . . . . . . . . . [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)
							00f0007600b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e0000016f3c4c798900000403004730450220235e5e07b61aa91a396b4d3eb364c9fca7b181899cd43716b175c900fdc844fc022100bbd7b6295aab637edf861913d9c542461af376e8f75b53c376d8c1ab6c7c9b820076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016f3c4c79bd000004030047304502202d8a7900ae4ebf55a7dc7228e23682d81bda8870775d3d453e90f2ba54e7b1b3022100a047d1b4e43655124691fa28719527d8646ac11a7937161d0848cf9bf3079541
 . . . . [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)
		0087ef3b208f409d0216e907f1dd96bb08c0eccb32ef4341c617e58e8e8037ec8a9a85def3e38732d2f550ffb1f3191d994c93214f8e4777ad2b248a016d23f1f2e53145dc0e180919d9efaab8f3aeb37963fd1c5d4671e18ce02e37fa6287f6578207ab78f4fe194526a3995e20248e753b50408b15a548e8124bd31374dc84c244a3113e33fe47419f063a1315dbfc3f19f45bfce309b6b93bec0d8e47e0c730bdbc2e8336fd6347ab48dd08640d7a509c40d621ffef41d7f2ca7291cfb4ef0f1e900a9517e6ae3d6536914b7e39b63b3d9c0ed64ddb77d4ee25fd68b596bd9d70032afd070f6a9fe8853823184f2031774584b28c8d39429b4383660d18317c