winbig.com.hk

Valid Email Server
Domain Lookup › winbig.com.hk

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
winbig.com.hk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-23 02:01:39 UTC · ↺ Refresh

MX Hostnames

  • mx3.udomain.com.hk
  • udgw.udomain.com.hk
  • mx4.udomain.com.hk
  • mx5.udomain.com.hk
  • mx2.udomain.com.hk
  • mx1.udomain.com.hk
  • mx6.udomain.com.hk

MX Priorities

  • mx3.udomain.com.hk: 30
  • udgw.udomain.com.hk: 30
  • mx1.udomain.com.hk: 30
  • mx5.udomain.com.hk: 30
  • mx6.udomain.com.hk: 30
  • mx4.udomain.com.hk: 30
  • mx2.udomain.com.hk: 30

A / AAAA Records

  • 45.121.197.57 (no PTR)
  • 45.121.197.58 (no PTR)

Mail Server IPs

  • 103.19.26.39 ↩ fosse.virtualhosting.hk

SOA Record

Raw SOA earth.udomain.com.hk domreg.udomain.com.hk 2023071816 10800 3600 604800 10800
Primary NS (mname)
earth.udomain.com.hk
Admin Email (rname)
domreg@udomain.com.hk
Serial
2023071816
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s

Nameservers (NS)

saturn.udomain.com.hk
earth.udomain.com.hk

SPF Record

✓ Soft Fail (~all)
v=spf1 redirect=smtp.spf.net.hk
📊 DNS lookups: 1/10

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No 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 redirect=smtp.spf.net.hk
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 winbig.com.hk

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits