Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
frontierbuilders.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 21:51:26 UTC · ↺ Refresh
MX Hostnames
- mail.frontierbuilders.com
MX Priorities
- mail.frontierbuilders.com: 10
A / AAAA Records
- 161.129.48.36 ↩ stratus1.lv.stimulsutech.com
Mail Server IPs
- 161.129.48.36 ↩ stratus1.lv.stimulsutech.com
SOA Record
Raw SOA
uno.ns.stimulustech.com ernestrau.gmail.com 2025111501 10800 3600 1209600 10800
Primary NS (mname)
uno.ns.stimulustech.com
Admin Email (rname)
ernestrau@gmail.com
Serial
2025111501
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
10800s
Nameservers (NS)
cinco.ns.stimulustech.com
cuatro.ns.stimulustech.com
dos.ns.stimulustech.com
tres.ns.stimulustech.com
uno.ns.stimulustech.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:161.129.48.49 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 a mx ip4:161.129.48.49 ~all
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