Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ntsec.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 17:40:24 UTC · ↺ Refresh
MX Hostnames
- ntsec-com-br.mail.protection.outlook.com
MX Priorities
- ntsec-com-br.mail.protection.outlook.com: 0
A / AAAA Records
- 104.16.89.51 (no PTR)
- 104.16.90.51 (no PTR)
- 2606:4700::6810:5a33
- 2606:4700::6810:5933
Mail Server IPs
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:f908::2 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f905::3 ↩ mail-dm5pr02cu00203.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.ntsec.com.br dns.cloudflare.com 2399254865 10000 2400 604800 1800
Primary NS (mname)
ns1.ntsec.com.br
Admin Email (rname)
dns@cloudflare.com
Serial
2399254865
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns1.ntsec.com.br
ns2.ntsec.com.br
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.google.com include:spf.protection.outlook.com ip4:170.238.235.114 ip4:170.238.235.115 ip4:187.18.197.98 ip4:45.232.138.60 a:smtpnne.ntsec.com.br -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected];fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- MS=ms14305682
- cisco-ci-domain-verification=f82a8eba5ec511fc192bc50bd7bd24461a3f0ebce0355854ccdb6546d0cd0e5
- SPFv=spf1 include:_spf.google.com include:spf.protection.outlook.com ip4:170.238.235.114 ip4:170.238.235.115 ip4:187.18.197.98 ip4:45.232.138.60 a:smtpnne.ntsec.com.br -all
- 1password-site-verification=6OSODROWPZHGLFIFNMCA5XPZMQ
- B5VE246NLYJ87N2L8SWNSXSLXVLEOWT4TLRAT0IG
- MS=86BF74C9DE8B68621C4097851338F910BC305A84
Full email verification for ntsec.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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