Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
oi.com.br
Yes
✓ Yes
Unknown
No
Yes
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 19:18:26 UTC · ↺ Refresh
MX Hostnames
- mx7.oi.com.br
MX Priorities
- mx7.oi.com.br: 10
A / AAAA Records
- 187.6.211.40 (no PTR)
Mail Server IPs
- 177.154.139.187 ↩ mx7.oi.com.br
SOA Record
Raw SOA
ns01.oi.net.br hostmaster.oi.com.br 414275588 600 1800 604800 300
Primary NS (mname)
ns01.oi.net.br
Admin Email (rname)
hostmaster@oi.com.br
Serial
414275588
Refresh
600s
Retry
1800s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns01
ns01.oi.net.br
venus.oi.net.br
SPF Record
✓ Strict (-all)
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
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=none; fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- facebook-domain-verification=kgz3szz9enknss2mqf4txsjqy9xvxx
- SPFv=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=r5n7jo9qoTtrux0qbK4lSoe4mWftrs2__ZYMDREa56
- _globalsign-domain-verification=lsZqBqXqaI_PraXHTRa5GpyrTT0oLVU4EKWvx5IkDa
- _globalsign-domain-verification=NY-llZLdcQofXzst3DJPpgSxyvJkYEsSaquPpq3Nug
- _globalsign-domain-verification=sic2P3sWmvrcIJ8M-fzQwWf-IAM6wyPX581G4GPU7d
Full email verification for oi.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits