Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mrtdesignllc.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 10:33:34 UTC · ↺ Refresh
MX Hostnames
- mrtdesignllc-com.mail.protection.outlook.com
MX Priorities
- mrtdesignllc-com.mail.protection.outlook.com: 0
A / AAAA Records
- 198.185.159.144 (no PTR)
- 198.185.159.145 (no PTR)
- 198.49.23.144
- 198.49.23.145
Mail Server IPs
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.p03.nsone.net hostmaster.nsone.net 1517263676 43200 7200 1209600 3600
Primary NS (mname)
dns1.p03.nsone.net
Admin Email (rname)
hostmaster@nsone.net
Serial
1517263676
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
dns2.p03.nsone.net
dns3.p03.nsone.net
dns4.p03.nsone.net
ns01.squarespacedns.com
ns02.squarespacedns.com
ns03.squarespacedns.com
ns04.squarespacedns.com
dns1.p03.nsone.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:107.152.99.237 ip4:66.210.245.106 -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
3 records- SPFv=spf1 include:spf.protection.outlook.com ip4:107.152.99.237 ip4:66.210.245.106 -all
- 559-PAD-CW7
- MS=ms65901722
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