number-crunchers.co.uk

Valid Email Server
Domain Lookup › number-crunchers.co.uk

Domain Overview

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

Checked via [email protected] · 2026-03-18 06:08:12 UTC · ↺ Refresh

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MX Hostnames

  • uk.mx3.mailanyone.net
  • uk.mx4.mx25.net
  • uk.mx1.mailanyone.net
  • uk.mx2.mx25.net

MX Priorities

  • uk.mx3.mailanyone.net: 30
  • uk.mx4.mx25.net: 40
  • uk.mx2.mx25.net: 20
  • uk.mx1.mailanyone.net: 10

A / AAAA Records

  • 185.151.30.158 ↩ 185-151-30-158.ptr4.stackcp.net
  • 2a07:7800::158 (no PTR)

Mail Server IPs

  • 192.162.219.255 ↩ mx41.electric.net
  • 192.162.219.49 ↩ mx41.electric.net
  • 192.162.219.155 ↩ mx41.electric.net

SOA Record

Raw SOA ns1.stackdns.com hostmaster.stackdns.com 1764679921 1800 900 1209600 300
Primary NS (mname)
ns1.stackdns.com
Admin Email (rname)
hostmaster@stackdns.com
Serial
1764679921
Refresh
1800s
Retry
900s
Expire
1209600s
Minimum TTL
300s

Nameservers (NS)

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

SPF Record

✓ Strict (-all)
v=spf1 ip4:51.219.21.209 ip4:185.151.28.158 include:spf.protection.outlook.com include:spf.giacomcp.com include:spf.stackmail.com include:spf.informanagement.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 3 found
selector1._domainkey
selector2._domainkey
s1._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

3 records
  • MS=ms23938751
  • vpe=8b1307f0
  • SPFv=spf1 ip4:51.219.21.209 ip4:185.151.28.158 include:spf.protection.outlook.com include:spf.giacomcp.com include:spf.stackmail.com include:spf.informanagement.com -all
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