Domain Overview
DNS: ✓ 20d ago
Checker: ✓ 20d ago
kiw.co.jp
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-21 07:24:22 UTC · ↺ Refresh
MX Hostnames
- mws1.kiw.co.jp
- fml400f.kiw.co.jp
MX Priorities
- fml400f.kiw.co.jp: 30
- mws1.kiw.co.jp: 40
A / AAAA Records
- 183.181.79.45 ↩ sv7684.xserver.jp
Mail Server IPs
- 210.253.48.188 ↩ barracuda.kiw.co.jp
- 210.253.48.178 ↩ mws1.kiw.co.jp
SOA Record
Raw SOA
ns2.kiw.co.jp fukuoka-yuto.kiw.co.jp 2026042612 28800 14400 360000 800
Primary NS (mname)
ns2.kiw.co.jp
Admin Email (rname)
fukuoka-yuto@kiw.co.jp
Serial
2026042612
Refresh
28800s
Retry
14400s
Expire
360000s
Minimum TTL
800s
Nameservers (NS)
mws1.kiw.co.jp
ns2.kiw.co.jp
ns1.cccn.ne.jp
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:210.253.48.178 ip4:210.253.48.185 include:spf.wingarc.smtps.jp include:_spf.salesforce.com ~all
📊 DNS lookups: 2/10
~ 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
3 records- SPFv=spf1 ip4:210.253.48.178 ip4:210.253.48.185 include:spf.wingarc.smtps.jp include:_spf.salesforce.com ~all
- _globalsign-domain-verification=DbSeGFJ2CsmJ6fwQhSfMSLh1juYpAqdNofh-1OMe1D
- MS=3723A61B5619F2574019460C398967E09A43BB99
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 kiw.co.jp
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits