institutoitp.com.br

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:6d:f2:37:ad:00:4f:3c:95:b0:d0:4f:fc:9b:a6:a4:bf:1f was issued on by Let's Encrypt.

With 6 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=institutoitp.com.br

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:6d:f2:37:ad:00:4f:3c:95:b0:d0:4f:fc:9b:a6:a4:bf:1f
Serial Number (int): 298749598049851585504100111082979397517087
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: a7:d7:b4:40:9a:57:f1:d0:78:4b:90:72:23:69:bf:d9:6b:12:1e:ab
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 45:d1:68:28:93:77:c9:58:4e:41:de:ca:45:84:0d:e5:12:69:b8:a9
Fingerprint (sha256): 38:7f:ea:38:fd:0b:69:c7:64:35:7f:20:d7:1b:67:31:61:b7:88:cb:df:55:f0:dd:46:ae:9c:5b:bc:e5:b5:af

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 institutoitp.com.br

6

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for institutoitp.com.br

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

autodiscover.institutoitp.com.br
institutoitp.com.br
m.institutoitp.com.br
mail.institutoitp.com.br
webdisk.institutoitp.com.br
www.institutoitp.com.br

Other certificates including the domain name institutoitp.com.br

(limited to 100 certificates)
m.institutoitp.com.br
m.institutoitp.com.br
sni.cloudflaressl.com
m.institutoitp.com.br
institutoitp.com.br
institutoitp.com.br
conteudo.institutoitp.com.br
institutoitp.com.br
institutoitp.com.br
institutoitp.com.br
sni.cloudflaressl.com
conteudo.institutoitp.com.br
sni.cloudflaressl.com
institutoitp.com.br
m.institutoitp.com.br
conteudo.institutoitp.com.br
sni.cloudflaressl.com
sni.cloudflaressl.com
institutoitp.com.br
m.institutoitp.com.br
institutoitp.com.br
conteudo.institutoitp.com.br
institutoitp.com.br
sni.cloudflaressl.com
institutoitp.com.br
m.institutoitp.com.br

Certificate

The complete raw certificate details for institutoitp.com.br in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu8WqDFpoke0mnH9wATPa
nfhk53+NRiyXlVk5EM2hE95Aav1FaJOrivil3SZ9DlZGm/i5dkv0oy3TtoDKW414
/7tTEsdvThW123X4SkCRA9MN3vFfiNneGuPiJrTAXZEQI0lklE2ak23M8jktQ5gd
0iSbm4Q79owcKAz3YthOMbDsAC+JFeq8VrhCfthiKWjXciM2hkTcwQj323SrHtex
9MRnuy4WI6iQRL9Cfo3Ov6SrqmEt+kGcZnqtF7e41Zzyl5ajlgQBfS+80h9oVhXv
zdDm9mQqp6H9boVX72m5uR97zDtoy49m7ChROJqnRVayLdBFiNlyNAzZ2892SeaC
wwIDAQAB
-----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 298749598049851585504100111082979397517087
 . . . . . . . . [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 2020-04-03 01:54:27 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-07-02 01:54:27 +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 'institutoitp.com.br'
 . . . . . . . . [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 23704034903644750073308903314224924738084503722525421153073607568258495512632555091803724034660320585198978966431917029694055936130964778556174828878905444182219000004184242879960656334925796415304555952807957419053149676854088066159940919923440167738935362663156267466101484663417794737251250350938405230871250917741079745995770938681771145938462246869523163780844348478387156758973772705193522525854172930599204615296826687930092247641147040365606838232642026730166027982168160844333351097037194758736390207926183656046255065806025556376698087586157646876376446022349268332168446399733277419354334246796857805537987
 . . . . . . . . . . . . . . . . . . . . [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)
							a7d7b4409a57f1d0784b90722369bfd96b121eab
 . . . . . . . . . . . . . . . . [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 (161 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'autodiscover.institutoitp.com.br'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'institutoitp.com.br'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'm.institutoitp.com.br'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.institutoitp.com.br'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webdisk.institutoitp.com.br'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.institutoitp.com.br'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e000001713df60ca10000040300483046022100e8633413d52593a19749464ae8895b27b07ca76a3e8e06b8a467f0afdfa3db52022100eae9ba616f14a5b910a9af258baed9bbe728e0fa1c61442f2ce5aac97585f26800760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c000001713df60ccb000004030047304502205e272e5259105e519c782a5949c74bf161f181ffade185c7c7587981c588e498022100f49806eb6ea43bf42c74e0599d060b9379e2518d6104e29cf25edbe79ee23429
 . . . . [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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