Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mustinbuilders.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 08:02:00 UTC · ↺ Refresh
MX Hostnames
- mustinbuilders-com.mail.protection.outlook.com
MX Priorities
- mustinbuilders-com.mail.protection.outlook.com: 0
A / AAAA Records
- 173.236.252.199 ↩ apache2-grog.iad1-shared-b8-16.dreamhost.com
Mail Server IPs
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 52.101.9.17 (no PTR)
- 52.101.41.28 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns0.directnic.com hostmaster.directnic.com 1379707136 28800 14400 604800 1800
Primary NS (mname)
ns0.directnic.com
Admin Email (rname)
hostmaster@directnic.com
Serial
1379707136
Refresh
28800s
Retry
14400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns1.directnic.com
ns2.directnic.com
ns0.directnic.com
ns3.directnic.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
2 records- SPFv=spf1 include:spf.protection.outlook.com -all
- MS=ms22177368
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