kingscorporate.co.uk

Valid Email Server
Domain Lookup › kingscorporate.co.uk

Domain Overview

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

Checked via [email protected] · 2026-03-20 13:04:10 UTC · ↺ Refresh

MX Hostnames

  • d217519.b.ess.uk.barracudanetworks.com
  • d217519.a.ess.uk.barracudanetworks.com

MX Priorities

  • d217519.a.ess.uk.barracudanetworks.com: 10
  • d217519.b.ess.uk.barracudanetworks.com: 20

A / AAAA Records

  • 185.151.45.158 ↩ kahn.nublue-host.uk

Mail Server IPs

  • 18.133.136.187 ↩ mail.ess.uk.barracuda.com
  • 18.133.136.186 ↩ mail.ess.uk.barracuda.com
  • 18.133.136.188 ↩ mail.ess.uk.barracuda.com

SOA Record

Raw SOA ns0.phase8.net support.phase8.net 2025102802 28800 3600 604800 86400
Primary NS (mname)
ns0.phase8.net
Admin Email (rname)
support@phase8.net
Serial
2025102802
Refresh
28800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns0.phase8.net
ns2.phase8.net
ns1.phase8.net

SPF Record

✓ Strict (-all)
v=spf1 include:26993886.spf05.hubspotemail.net include:servers.mcsv.net ip4:78.129.137.173 ip4:87.117.220.39 include:spf.protection.outlook.com include:spf.ess.uk.barracudanetworks.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100; ri=86400;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

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
  • google-site-verification=u1bU3KCgQI3y3O1q7TAmIDRONVmfd0PPpQZ2mwflDTQ
  • SPFv=spf1 include:26993886.spf05.hubspotemail.net include:servers.mcsv.net ip4:78.129.137.173 ip4:87.117.220.39 include:spf.protection.outlook.com include:spf.ess.uk.barracudanetworks.com -all
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for kingscorporate.co.uk

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits