Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
c3.co.uk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-30 19:11:23 UTC · ↺ Refresh
MX Hostnames
- engine02-20008-2.icritical.com
- engine01-20008-1.icritical.com
MX Priorities
- engine02-20008-2.icritical.com: 20
- engine01-20008-1.icritical.com: 10
A / AAAA Records
- 192.124.249.4 ↩ cloudproxy10004.sucuri.net
Mail Server IPs
- 192.162.219.49 ↩ mx41.electric.net
SOA Record
Raw SOA
dns31.cloudns.net support.cloudns.net 2026032001 7200 1800 1209600 3600
Primary NS (mname)
dns31.cloudns.net
Admin Email (rname)
support@cloudns.net
Serial
2026032001
Refresh
7200s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
dns32.cloudns.net
dns34.cloudns.net
dns33.cloudns.net
dns31.cloudns.net
SPF Record
✗ MissingNo SPF record — domain is unprotected against spoofing.
⚠ No SPF record found. Email servers cannot verify authorized senders.
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
1 record- MS=FF701C3C0FF194FE9DF3C0E31A68F0E1A3911D57
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