Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
usrealco.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 11:42:17 UTC · ↺ Refresh
MX Hostnames
- usrealco-com.mail.protection.outlook.com
MX Priorities
- usrealco-com.mail.protection.outlook.com: 10
A / AAAA Records
- 3.33.139.32 ↩ aeedc42b70c898c66.awsglobalaccelerator.com
Mail Server IPs
- 52.101.9.14 ↩ mail-bl0pr03cu00206.inbound.protection.outlook.com
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
- 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c946::3 ↩ mail-ch0pr04cu00603.inbound.protection.outlook.com
- 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f90f:: ↩ mail-sa9pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ha1.markmonitor.zone hostmaster.markmonitor.com 2025112001 86400 3600 2592000 172800
Primary NS (mname)
ha1.markmonitor.zone
Admin Email (rname)
hostmaster@markmonitor.com
Serial
2025112001
Refresh
86400s
Retry
3600s
Expire
2592000s
Minimum TTL
172800s
Nameservers (NS)
ha3.markmonitor.zone
ha2.markmonitor.zone
ha1.markmonitor.zone
ha4.markmonitor.zone
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:u14532666.wl167.sendgrid.net include:asp-spf1.yardi.com include:asp-spf2.yardi.com ip4:12.129.29.143 include:app.aventri.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- MS=ms30217545
- SPFv=spf1 include:spf.protection.outlook.com include:u14532666.wl167.sendgrid.net include:asp-spf1.yardi.com include:asp-spf2.yardi.com ip4:12.129.29.143 include:app.aventri.com -all
- asv=dbadf97d0ebb9de94c234c9e20cfa031
- smartsheet-site-validation=LhmtdNqDn4cakA9mlKEcclcjLg0PMpiW
- docusign=2f1e0abd-779e-4c9f-839e-5e5b352c31d2
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