Domain Overview
DNS: ✓ 10d ago
Checker: ✓ 10d ago
1-1.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-31 15:23:02 UTC · ↺ Refresh
MX Hostnames
- mail.1-1.com
MX Priorities
- mail.1-1.com: 10
A / AAAA Records
- 203.107.45.167 ↩ catl.com
Mail Server IPs
- 140.207.115.132 (no PTR)
SOA Record
Raw SOA
dns17.hichina.com hostmaster.hichina.com 2026052809 3600 1200 86400 600
Primary NS (mname)
dns17.hichina.com
Admin Email (rname)
hostmaster@hichina.com
Serial
2026052809
Refresh
3600s
Retry
1200s
Expire
86400s
Minimum TTL
600s
Nameservers (NS)
dns18.hichina.com
dns17.hichina.com
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
✗ 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- v=spf a mx ~ 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 1-1.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits