Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
defineusa.com
Yes
✓ Yes
Yahoo
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 14:04:44 UTC · ↺ Refresh
MX Hostnames
- mx-biz.mail.am0.yahoodns.net
MX Priorities
- mx-biz.mail.am0.yahoodns.net: 10
A / AAAA Records
- 198.185.159.144 (no PTR)
Mail Server IPs
- 67.195.228.75 ↩ mtaproxy1.biz.mail.vip.gq1.yahoo.com
- 67.195.204.83 ↩ mtaproxy1.biz.mail.vip.bf1.yahoo.com
SOA Record
Raw SOA
ns63.worldnic.com namehost.worldnic.com 123052608 10800 3600 604800 3600
Primary NS (mname)
ns63.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
123052608
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns63.worldnic.com
ns64.worldnic.com
SPF Record
✗ MissingNo SPF record — domain is unprotected against spoofing.
⚠ No SPF record found. Email servers cannot verify authorized senders.
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
No TXT records found.
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