blackstoneconstruct.com

Valid Email Server
Domain Lookup › blackstoneconstruct.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
blackstoneconstruct.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 11:35:36 UTC · ↺ Refresh

MX Hostnames

  • blackstoneconstruct-com.mail.protection.outlook.com

MX Priorities

  • blackstoneconstruct-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 192.185.226.115 ↩ 192-185-226-115.unifiedlayer.com

Mail Server IPs

  • 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
  • 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
  • 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
  • 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
  • 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:f90f::1 ↩ mail-sa9pr04cu00201.inbound.protection.outlook.com
  • 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.bdm.microsoftonline.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1.bdm.microsoftonline.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s

Nameservers (NS)

ns3.bdm.microsoftonline.com
ns4.bdm.microsoftonline.com
ns1.bdm.microsoftonline.com
ns2.bdm.microsoftonline.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No 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

4 records
  • mscid=VHkqfkyti7iIBGY5LXRcRl5glv36x56cr64n37oQaSK57/fTZ/a3J3noI1FPbx/kiwm5Ls9fkKj6faGP7IpnTA==
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • google-site-verification=o55vB-adg25cvCcjN5r-FXacGU2arpklxHj_59XCQVU
  • google-site-verification=CLvr-UKyfjw-X4PMuNbp1qS5EOR_1eYZcP1PB9delGI
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