Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tominaga.co.jp
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-24 16:57:09 UTC · ↺ Refresh
MX Hostnames
- tominaga-co-jp.mail.protection.outlook.com
MX Priorities
- tominaga-co-jp.mail.protection.outlook.com: 0
A / AAAA Records
- 150.60.162.128 (no PTR)
Mail Server IPs
- 52.101.157.11 ↩ mail-os0p286cu01203.inbound.protection.outlook.com
- 52.101.124.6 ↩ mail-tyvp286cu00206.inbound.protection.outlook.com
- 52.101.124.1 ↩ mail-ty3p286cu00101.inbound.protection.outlook.com
- 52.101.157.10 ↩ mail-os0p286cu01302.inbound.protection.outlook.com
- 2a01:111:f403:cc1f:: ↩ mail-os9p286cu00100.inbound.protection.outlook.com
- 2a01:111:f403:cc1a::2 ↩ mail-tyvp286cu00302.inbound.protection.outlook.com
- 2a01:111:f403:cc1a:: ↩ mail-tycp286cu02600.inbound.protection.outlook.com
- 2a01:111:f403:cc1a::3 ↩ mail-tyvp286cu00203.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-643.awsdns-16.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-643.awsdns-16.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1361.awsdns-42.org
ns-1856.awsdns-40.co.uk
ns-405.awsdns-50.com
ns-643.awsdns-16.net
SPF Record
✓ Soft Fail (~all)
v=spf1 a:www3625.sakura.ne.jp mx include:_mcgwspf.bit-drive.ne.jp include:spf.eco-serv.jp include:spf.protection.outlook.com include:kagoya.net include:45130111.spf06.hubspotemail.net ip4:133.186.35.0/24 ~all
📊 DNS lookups: 7/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
3 records- SPFv=spf1 a:www3625.sakura.ne.jp mx include:_mcgwspf.bit-drive.ne.jp include:spf.eco-serv.jp include:spf.protection.outlook.com include:kagoya.net include:45130111.spf06.hubspotemail.net ip4:133.186.35.0/24 ~all
- DAC=dacIJvTkVp7ie8MezPN
- MS=ms51969540
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 tominaga.co.jp
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits