Domain Overview
DNS: ✓ 20d ago
Checker: ✓ 2mo ago
oncemx.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 01:27:07 UTC · ↺ Refresh
MX Hostnames
- mx.oncemx.com
MX Priorities
- mx.oncemx.com: 0
A / AAAA Records
- 162.220.166.248 ↩ oncemx.com
Mail Server IPs
- 2607:ff28:a005:172:7e31:d22d:2fb4:aa56 ↩ 10-q.motorinnsocala.com
SOA Record
Raw SOA
dns.oncemx.com hostmaster.oncemx.com 1159096536 43200 3600 604800 3600
Primary NS (mname)
dns.oncemx.com
Admin Email (rname)
hostmaster@oncemx.com
Serial
1159096536
Refresh
43200s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns2.oncemx.com
ns1.oncemx.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:23.226.135.142 ip4:23.226.135.153 ip4:23.226.135.181 ip4:23.226.135.182 ip4:23.226.135.183 ip4:23.226.135.184 ip4:23.226.135.185 ip4:23.226.135.186 ip4:23.226.135.187 ip4:23.226.135.188 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict 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
1 record- SPFv=spf1 ip4:23.226.135.142 ip4:23.226.135.153 ip4:23.226.135.181 ip4:23.226.135.182 ip4:23.226.135.183 ip4:23.226.135.184 ip4:23.226.135.185 ip4:23.226.135.186 ip4:23.226.135.187 ip4:23.226.135.188 -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 oncemx.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits