1stopdevinc.com

Valid Email Server
Domain Lookup › 1stopdevinc.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
1stopdevinc.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-23 20:40:40 UTC · ↺ Refresh

MX Hostnames

  • 1stopdevinc-com.mail.protection.outlook.com

MX Priorities

  • 1stopdevinc-com.mail.protection.outlook.com: 0

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
  • 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
  • 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
  • 52.101.11.17 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.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)

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

✗ 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

2 records
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • mscid=zFZm+dbxJkH1xPEZwIEtyyzTR1Ta7qjcN6NCCW45aUEH9QoxMFJr5yMLxl9WV1jsLa1q2nZR06AXgcCpEQK+Cg==
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