corestaff.co.jp

Valid Email Server
Domain Lookup › corestaff.co.jp
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
corestaff.co.jp
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-06-03 08:33:45 UTC · ↺ Refresh

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MX Hostnames

  • corestaff-co-jp.mail.protection.outlook.com
  • mx.securemx.jp

MX Priorities

  • corestaff-co-jp.mail.protection.outlook.com: 10
  • mx.securemx.jp: 0

A / AAAA Records

  • 20.44.184.238

Mail Server IPs

  • 52.101.124.1 ↩ mail-ty3p286cu00101.inbound.protection.outlook.com
  • 52.101.124.6 ↩ mail-tyvp286cu00206.inbound.protection.outlook.com
  • 52.101.124.5 ↩ mail-tyvp286cu00305.inbound.protection.outlook.com
  • 52.101.157.40 ↩ mail-os9p286cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:cc1a::2 ↩ mail-tyvp286cu00302.inbound.protection.outlook.com
  • 2a01:111:f403:cc1a::1 ↩ mail-ty3p286cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:cc1f::1 ↩ mail-os0p286cu01201.inbound.protection.outlook.com
  • 2a01:111:f403:cc1a::3 ↩ mail-tyvp286cu00203.inbound.protection.outlook.com
  • 210.130.202.92 ↩ mx180b.securemx.jp
  • 210.130.202.99 ↩ mx180a.securemx.jp
  • 210.130.202.96
  • 210.130.202.93

SOA Record

Raw SOA ns-1088.awsdns-08.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1088.awsdns-08.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-647.awsdns-16.net
ns-79.awsdns-09.com
ns-1088.awsdns-08.org
ns-1767.awsdns-28.co.uk

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.ecbeing.co.jp include:spf.securemx.jp include:spf.list-finder.jp include:spf.protection.outlook.com include:zcsend.net include:spf.baremetal.jp ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

4 records
  • _globalsign-domain-verification=BTA0CZltoTy-Oz0m7KZ7THwjhWcjoZaKwka_VPG3J8
  • _globalsign-domain-verification=rrZWu-1QEJQIjp2Z4lC-Cvp_N5b8DKZ93VX5RnATJg
  • SPFv=spf1 include:spf.ecbeing.co.jp include:spf.securemx.jp include:spf.list-finder.jp include:spf.protection.outlook.com include:zcsend.net include:spf.baremetal.jp ~all
  • MS=ms18937347
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