Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
nationalspeedinc.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-22 06:10:22 UTC · ↺ Refresh
MX Hostnames
- nationalspeedinc-com.mail.protection.outlook.com
MX Priorities
No priority data.
A / AAAA Records
- 151.101.2.159
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
ns48.domaincontrol.com
ns47.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- SPFv=spf1 include:spf.protection.outlook.com -all
- i=211&m=geo-g3-mx2-p10
- _globalsign-domain-verification=UP4EDNFaon9yUG67wHFdIVtvuI8YpHksvB7_ZiymUO
- _globalsign-domain-verification=c6XBOpYl_V6H9WmBPQsitZ9E3C9vN13Y8qK3KsgZ7X
- google-site-verification=9DMbJk0XawN9WF32POAbY5rSPgkwpoymy3p4fyWRx5c
- _globalsign-domain-verification=TlkMPOPDKDkcZCB39j3DNBGyn8YEanFtLARoHvdmYd
- google-site-verification=_cfEt_vsOl3Pn9SsK7O9Tbrvim4kVnmCj2BPM-UEsUw
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for nationalspeedinc.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits