fireshieldsystemsltd.co.uk

Valid Email Server
Domain Lookup › fireshieldsystemsltd.co.uk

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
fireshieldsystemsltd.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-30 21:00:01 UTC · ↺ Refresh

MX Hostnames

  • fireshieldsystemsltd-co-uk.mail.protection.outlook.com

MX Priorities

  • fireshieldsystemsltd-co-uk.mail.protection.outlook.com: 0

A / AAAA Records

  • 78.129.239.13 ↩ deathstar.ip-78-129-239-13.republic-cluster.1int.co.uk

Mail Server IPs

  • 52.101.89.0 ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
  • 52.101.99.2 ↩ mail-cwxp265cu00502.inbound.protection.outlook.com
  • 52.101.89.2 ↩ mail-lo3p265cu00302.inbound.protection.outlook.com
  • 52.101.99.0 ↩ mail-cwxp265cu00600.inbound.protection.outlook.com
  • 2a01:111:f403:ca0b::1 ↩ mail-lo3p265cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:ca1a::1 ↩ mail-cwxp265cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:ca0b::2 ↩ mail-lo0p265cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:ca0b:: ↩ mail-lo2p265cu02300.inbound.protection.outlook.com

SOA Record

Raw SOA ns.mainnameserver.com hostmaster.mainnameserver.com 2024091258 10800 600 2419200 3600
Primary NS (mname)
ns.mainnameserver.com
Admin Email (rname)
hostmaster@mainnameserver.com
Serial
2024091258
Refresh
10800s
Retry
600s
Expire
2419200s
Minimum TTL
3600s

Nameservers (NS)

ns.mainnameserver.com
ns2.mainnameserver.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

3 records
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms21186594
  • M0C0M33273
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