Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
diamondgroup.com.tw
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-10-29 12:11:11 UTC · ↺ Refresh
MX Hostnames
- mail.diamondgroup.com.tw
- mailvn.diamondgroup.com.tw
MX Priorities
- mail.diamondgroup.com.tw: 10
- mailvn.diamondgroup.com.tw: 20
A / AAAA Records
- 23.236.62.147 ↩ 147.62.236.23.bc.googleusercontent.com
Mail Server IPs
- 211.20.175.211 (no PTR)
- 103.17.88.85 ↩ mailvn.diamondgroup.com.tw
SOA Record
Raw SOA
ns17.domaincontrol.com dns.jomax.net 2026100600 28800 7200 604800 600
Primary NS (mname)
ns17.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026100600
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns17.domaincontrol.com
ns18.domaincontrol.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a ip4:211.20.175.211 ip4:103.17.88.85 mx:mail.diamondgroup.com.tw a:diamondgroup.com.tw ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- google-site-verification=SrkWha0OdjEHIqIym9_ba9mzEsPvKKSfm6PMgK3RYnE
- google-site-verification=XJrh0Wxe2eGDZCQP_p_tYVgguowfawyjrTbjICDDF4A
- google-site-verification=Oob7lnBQe4NRTxOHlzH80SohIXDHx8Hl9DbZIBA5Bz8
- SPFv=spf1 mx a ip4:211.20.175.211 ip4:103.17.88.85 mx:mail.diamondgroup.com.tw a:diamondgroup.com.tw ~all
- h34j3u4ud98n08fd1bb8fl3ga9
- pbblev92u04m6mjllom4di1lcl
- ql7nppcmkv9io8ka90auu0lkvc
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 diamondgroup.com.tw
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits