oi.com.br

Observed 2026-07-12T16:32:57.749Z (10h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email bySendGrid

Also usesFacebook/Meta

telecom

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat oi.com.br actually stands on - every host below is a signed observation

oi.com.br

A / AAAA

187.6.211.40

Cloudflareserves the site

venus.oi.net.brns01.oi.net.brns01

net.br + ns01answers its DNS

mx7.oi.com.br

SendGridreceives its email

HTTPS probe

redirect Redirecting (3xx) 301 → https://www.oi.com.br/

HTTP status301

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time1251 ms

DNS resolutionNOERROR

Redirect chain

https://www.oi.com.br/

MCP This domain advertises an AI service endpoint at _mcp._tcp.

_globalsign-domain-verification=sic2P3sWmvrcIJ8M-fzQwWf-IAM6wyPX581G4GPU7d _globalsign-domain-verification=lsZqBqXqaI_PraXHTRa5GpyrTT0oLVU4EKWvx5IkDa _globalsign-domain-verification=r5n7jo9qoTtrux0qbK4lSoe4mWftrs2__ZYMDREa56

v=spf1 include:spf-oi.oi.com.br include:spf-oiint.oi.com.br a:partners.oi.com.br a:senders.oi.com.br include:sendgrid.net include:_spf.atoracle.com -all

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

187.6.211.40

MX 1

10mx7.oi.com.br

TXT 13

facebook-domain-verification=kgz3szz9enknss2mqf4txsjqy9xvxx
_globalsign-domain-verification=sic2P3sWmvrcIJ8M-fzQwWf-IAM6wyPX581G4GPU7d
_globalsign-domain-verification=r5n7jo9qoTtrux0qbK4lSoe4mWftrs2__ZYMDREa56
v=spf1 include:spf-oi.oi.com.br include:spf-oiint.oi.com.br a:partners.oi.com.br a:senders.oi.com.br include:sendgrid.net include:_spf.atoracle.com -all
_globalsign-domain-verification=NY-llZLdcQofXzst3DJPpgSxyvJkYEsSaquPpq3Nug
_globalsign-domain-verification=lsZqBqXqaI_PraXHTRa5GpyrTT0oLVU4EKWvx5IkDa
v=DMARC1; p=none; rua=mailto:acdff5980d7f873@rep.dmarcanalyzer.com; ruf=mailto:acdff5980d7f873@for.dmarcanalyzer.com; sp=none; fo=1;
_globalsign-domain-verification=sic2P3sWmvrcIJ8M-fzQwWf-IAM6wyPX581G4GPU7d
_globalsign-domain-verification=lsZqBqXqaI_PraXHTRa5GpyrTT0oLVU4EKWvx5IkDa
_globalsign-domain-verification=r5n7jo9qoTtrux0qbK4lSoe4mWftrs2__ZYMDREa56

NS 3

venus.oi.net.br
ns01.oi.net.br
ns01

SOA 1

ns01.oi.net.br hostmaster.oi.com.br

TLS Certificates (0)

None.

Subdomains (95)

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for oi.com.br. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/oi.com.br">
  <img src="https://domaindrift.io/badge/oi.com.br.svg"
       width="300" height="64" alt="DomainDrift signed observations for oi.com.br">
</a>

Ed25519 Receipt

Receipt ID: fa56dec9-03c3-43d5-a2e9-f38dcfd10824
Output Hash: 97f1f2308b364721e180d8f45e22fde2ec1b7e0bbcadc20af6852abcce893d03
Signature: ed25519:e7bea2080506ee3847c1f54f16cfbb5322ef756874a28ed5027b34fd102a1213b61e3d3815dccbe9284219b92172a3b852fa534094788f224bc231ffd8584a0e
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/oi.com.br