Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
crystalsigma.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 07:20:56 UTC · ↺ Refresh
MX Hostnames
- mailserver.livemail.co.uk
MX Priorities
- mailserver.livemail.co.uk: 10
A / AAAA Records
- 79.99.41.148 ↩ ip79-99-41-148.pbiaas.com
Mail Server IPs
- 212.227.24.137 ↩ mailserver.livemail.co.uk
SOA Record
Raw SOA
ns1.livedns.co.uk admin.crystalsigma.com 1736342666 10800 3600 604800 3600
Primary NS (mname)
ns1.livedns.co.uk
Admin Email (rname)
admin@crystalsigma.com
Serial
1736342666
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns2.livedns.co.uk
ns1.livedns.co.uk
ns3.livedns.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 a ip4:213.171.216.0/24 ip4:77.68.64.0/27 mx ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✗ None detectedNo 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
4 records- 202404031426095d0lhgpf49mn25jwnrlgl8msf3udv69ncpmskjo6gysmlxjwb8
- 202303311317464cbnufyu0c5bn0nw7050576dn00hwpdqhkamhho5yt7et3sq50
- SPFv=spf1 a ip4:213.171.216.0/24 ip4:77.68.64.0/27 mx ~all
- google-site-verification=3kartNk5BkVwHhK5aLB_2zPqCDGpQT30ASW7TjH6xDM
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 crystalsigma.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits