mediagain.co.jp

Valid Email Server
Domain Lookup › mediagain.co.jp

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
mediagain.co.jp
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-21 15:36:21 UTC · ↺ Refresh

MX Hostnames

  • mediagain-co-jp.mail.eo.outlook.com

MX Priorities

  • mediagain-co-jp.mail.eo.outlook.com: 0

A / AAAA Records

  • 157.205.175.162 ↩ websvr157-205-175-162.alpha-prm.jp

Mail Server IPs

  • 52.101.157.10 ↩ mail-os0p286cu01302.inbound.protection.outlook.com
  • 52.101.124.0 ↩ mail-tycp286cu02600.inbound.protection.outlook.com
  • 52.101.124.6 ↩ mail-tyvp286cu00206.inbound.protection.outlook.com
  • 52.101.157.40 ↩ mail-os9p286cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:cc1f:: ↩ mail-os9p286cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:cc1a::3 ↩ mail-tyvp286cu00203.inbound.protection.outlook.com
  • 2a01:111:f403:cc1a:: ↩ mail-tycp286cu02600.inbound.protection.outlook.com
  • 2a01:111:f403:cc24:: ↩ mail-os0p286cu01300.inbound.protection.outlook.com

SOA Record

Raw SOA skydns99.otsuka-office365.jp hostmaster.otsuka-office365.jp 2021070501 10800 3600 604800 1800
Primary NS (mname)
skydns99.otsuka-office365.jp
Admin Email (rname)
hostmaster@otsuka-office365.jp
Serial
2021070501
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

skydns12.otsuka-office365.jp
skydns11.otsuka-office365.jp
skydns13.otsuka-office365.jp

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

2 records
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • google-site-verification=EAWsT6z_VYNF8GvR3hq1Dk8nDog4LAoa4KORg472mAQ
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