firstusfloors.com

Valid Email Server
Domain Lookup › firstusfloors.com

Domain Overview

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

Checked via [email protected] · 2026-03-21 13:58:44 UTC · ↺ Refresh

MX Hostnames

  • firstusfloors-com.mail.protection.outlook.com

MX Priorities

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

A / AAAA Records

  • 3.228.226.181 ↩ ec2-3-228-226-181.compute-1.amazonaws.com
  • 3.229.154.205 ↩ ec2-3-229-154-205.compute-1.amazonaws.com

Mail Server IPs

  • 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
  • 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
  • 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
  • 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com

SOA Record

Raw SOA ns45.domaincontrol.com dns.jomax.net 2024101000 28800 7200 604800 600
Primary NS (mname)
ns45.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2024101000
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns46.domaincontrol.com
ns45.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

5 records
  • google-site-verification=yE8RRx0WUekXRH4xjkbJTlB0lnkwhh42XxzRftj24jw
  • DKIMv=DKIM1;t=s;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDBkelvZUJG8j5GSlbXKcxrqFTVWRupRHGUZ30N8qn9AxVyaEzbg8pGVOzcyj14MNPnPXda5ZCr/M+ntwfV7Y0Lm/vHRYX3Jc62fQRz3xrTP2/5bBXJZDy4GP5Yc/DB3yG0yO0Y5OKsLRqOisNMaFksr85uiVMGmHVlBj7tYlqFEwIDAQAB
  • SPFv=spf1 include:secureserver.net -all
  • v=verifydomain MS=2328272
  • NETORGFT15013304.onmicrosoft.com
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