Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
musashi.co.jp
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 13:35:55 UTC · ↺ Refresh
MX Hostnames
- musashi-co-jp.mail.protection.outlook.com
MX Priorities
- musashi-co-jp.mail.protection.outlook.com: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 52.101.157.40 ↩ mail-os9p286cu00100.inbound.protection.outlook.com
- 52.101.124.6 ↩ mail-tyvp286cu00206.inbound.protection.outlook.com
- 52.101.124.5 ↩ mail-tyvp286cu00305.inbound.protection.outlook.com
- 52.101.157.10 ↩ mail-os0p286cu01302.inbound.protection.outlook.com
SOA Record
Raw SOA
ns000.d-53.net dns-managers.iij.ad.jp 334 3600 600 604800 900
Primary NS (mname)
ns000.d-53.net
Admin Email (rname)
dns-managers@iij.ad.jp
Serial
334
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
900s
Nameservers (NS)
ns015-mkk32qrg9ljg245r.m.d-53.net
ns015-mkk32qrg9ljg245r.m.d-53.info
ns015-mkk32qrg9ljg245r.m.d-53.jp
SPF Record
✓ Strict (-all)
v=spf1 +ip4:202.124.213.168/29 +ip4:74.122.253.71/28 +ip4:210.80.140.141/29 +ip4:64.136.253.4/29 +ip4:206.47.180.243/29 include:spf.protection.outlook.com include:_spf.activegate-ss.jp include:sharestage.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; pct=100
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- MS=ms78032112
- ZOOM_verify_RNBrUbsOS9aPdOVwSPZOUQ
- google-site-verification=k3ewYkCCfTO-UscW75R8mPFweiuMrNQNfOT2t014Pt0
- SPFv=spf1 +ip4:202.124.213.168/29 +ip4:74.122.253.71/28 +ip4:210.80.140.141/29 +ip4:64.136.253.4/29 +ip4:206.47.180.243/29 include:spf.protection.outlook.com include:_spf.activegate-ss.jp include:sharestage.com -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
See demo & docs
Deep verification
Full email verification for musashi.co.jp
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits