derbyshireairconditioning.co.uk

Valid Email Server
Domain Lookup › derbyshireairconditioning.co.uk

Domain Overview

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

Checked via [email protected] · 2026-04-01 00:17:57 UTC · ↺ Refresh

MX Hostnames

  • mx1.123-reg.co.uk
  • mx0.123-reg.co.uk

MX Priorities

  • mx0.123-reg.co.uk: 10
  • mx1.123-reg.co.uk: 20

A / AAAA Records

  • 185.151.30.183 ↩ 185-151-30-183.ptr4.stackcp.net
  • 2a07:7800::183 (no PTR)

Mail Server IPs

  • 216.69.141.84 ↩ osplibsmtp02-v01.prod.phx3.secureserver.net
  • 216.69.141.71 ↩ osplibsmtp01-v01.prod.phx3.secureserver.net
  • 216.69.141.113 ↩ osplibsmtp03-v01.prod.phx3.secureserver.net
  • 216.69.141.78 ↩ osplibsmtp01-v02.prod.phx3.secureserver.net
  • 216.69.141.162 ↩ osplibsmtp02-v02.prod.phx3.secureserver.net
  • 216.69.141.114 ↩ osplibsmtp03-v02.prod.phx3.secureserver.net

SOA Record

Raw SOA ns1.stackdns.com hostmaster.stackdns.com 1746094645 1800 900 1209600 300
Primary NS (mname)
ns1.stackdns.com
Admin Email (rname)
hostmaster@stackdns.com
Serial
1746094645
Refresh
1800s
Retry
900s
Expire
1209600s
Minimum TTL
300s

Nameservers (NS)

ns2.stackdns.com
ns3.stackdns.com
ns1.stackdns.com
ns4.stackdns.com

SPF Record

✓ Strict (-all)
v=spf1 include:123-reg.co.uk -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

1 record
  • SPFv=spf1 include:123-reg.co.uk -all
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