masterbase.com

Valid Email Server
Domain Lookup › masterbase.com

Domain Overview

DNS: ✓ 3d ago Checker: ✓ 3d ago
masterbase.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-21 02:24:16 UTC · ↺ Refresh

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MX Hostnames

  • masterbase-com.mail.protection.outlook.com

MX Priorities

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

A / AAAA Records

  • 104.18.21.239 (no PTR)
  • 104.18.20.239 (no PTR)
  • 2606:4700::6812:14ef
  • 2606:4700::6812:15ef

Mail Server IPs

  • 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
  • 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
  • 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
  • 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
  • 2a01:111:f403:f90f:: ↩ mail-sa9pr04cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com

SOA Record

Raw SOA lovisa.ns.cloudflare.com dns.cloudflare.com 2404772682 10000 2400 604800 1800
Primary NS (mname)
lovisa.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2404772682
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

rudy.ns.cloudflare.com
lovisa.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 mx include:spf.masterbase.com include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; aspf=r; sp=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._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

7 records
  • google-site-verification=qJ2RakW0jchejoHMCKmTeyDajpf6Yqg-b1IEC7cluHE
  • linkedin-site-verification=7491623f-0f66-46ab-af69-e47e6d9880fc
  • SPFv=spf1 mx include:spf.masterbase.com include:spf.protection.outlook.com -all
  • ca3-7757336775204ec3aa28832b67c620cd
  • facebook-domain-verification=hs2i9dyvrc5r5wkmqmcmp0e8ocsz52
  • google-site-verification=3RQwnDK9HJAaS40lwBFF_zLi1wTdPzOMrX9mkq1TK_U
  • google-site-verification=ElvVMB5PyZpfx7R3lHR4SkmuWG9sqcSIcYFMVfJKT2M
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