k-c-a.co.uk

Valid Email Server

Domain Overview

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

Checked via [email protected] · 2026-03-21 16:27:44 UTC · ↺ Refresh

MX Hostnames

  • kca-co-uk0k.mail.protection.outlook.com

MX Priorities

  • kca-co-uk0k.mail.protection.outlook.com: 10

A / AAAA Records

  • 77.72.1.54 ↩ abafar-lon.krystal.uk

Mail Server IPs

  • 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
  • 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
  • 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
  • 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com

SOA Record

Raw SOA ns-889.awsdns-47.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-889.awsdns-47.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-431.awsdns-53.com
ns-889.awsdns-47.net
ns-1138.awsdns-14.org
ns-1905.awsdns-46.co.uk

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:159.253.208.45 ip4:217.138.96.234 ip4:217.138.189.42 ip4:52.56.227.212 include:mailcontrol.com include:spf.protection.outlook.com include:spf.mailjet.com include:spf.exclaimer.net ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

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

DKIM Selectors

✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 ip4:159.253.208.45 ip4:217.138.96.234 ip4:217.138.189.42 ip4:52.56.227.212 include:mailcontrol.com include:spf.protection.outlook.com include:spf.mailjet.com include:spf.exclaimer.net ~all
  • krystal-domain-verification
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 k-c-a.co.uk

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

No credit card required
Get 1,000 Free Credits