Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
nationalheatandair.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-22 11:21:37 UTC · ↺ Refresh
MX Hostnames
- east.smtp.mx.exch082.serverdata.net
- west.smtp.mx.exch082.serverdata.net
MX Priorities
No priority data.
A / AAAA Records
- 72.14.183.75
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
ns4.linode.com
ns2.linode.com
ns3.linode.com
ns1.linode.com
ns5.linode.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.intermedia.net ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate 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
2 records- SPFv=spf1 include:spf.intermedia.net ~all
- google-site-verification=T589Z7JfEedt1-JENuFv4vZ2L4TQsk7l_9ev1iwQAWE
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