a1buildingsupply.com

Valid Email Server
Domain Lookup › a1buildingsupply.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
a1buildingsupply.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-02 10:20:14 UTC · ↺ Refresh

MX Hostnames

  • a1buildingsupply-com.mail.protection.outlook.com

MX Priorities

  • a1buildingsupply-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 13.248.243.5 ↩ a16e665f42988324c.awsglobalaccelerator.com
  • 76.223.105.230 ↩ a16e665f42988324c.awsglobalaccelerator.com

Mail Server IPs

  • 52.101.8.42 ↩ mail-dm6pr03cu00402.inbound.protection.outlook.com
  • 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
  • 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
  • 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
  • 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com

SOA Record

Raw SOA ns23.domaincontrol.com dns.jomax.net 2025072900 28800 7200 604800 3600
Primary NS (mname)
ns23.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025072900
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns23.domaincontrol.com
ns24.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 include:secureserver.net -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

✗ None detected

No 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:secureserver.net -all
  • NETORG6872883.onmicrosoft.com
  • MS=794AD462E3633C7F982A2CBA84CE28E64429B5DC
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