Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
seguritandental.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 06:49:49 UTC · ↺ Refresh
MX Hostnames
- mx.xmission.com
MX Priorities
- mx.xmission.com: 10
A / AAAA Records
- 166.70.53.22 ↩ webserv.dentalvps.cloud.xmission.com
Mail Server IPs
- 166.70.12.20 ↩ mx.xmission.com
SOA Record
Raw SOA
ns.xmission.com domains.xmission.com 2022061601 10800 1800 3600000 86400
Primary NS (mname)
ns.xmission.com
Admin Email (rname)
domains@xmission.com
Serial
2022061601
Refresh
10800s
Retry
1800s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns1.xmission.com
ns2.xmission.com
ns3.xmission.com
ns.xmission.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx include:_spf.xmission.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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
1 record- SPFv=spf1 a mx include:_spf.xmission.com ~all
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 · Customize →
See demo & docs
Deep verification
Full email verification for seguritandental.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits