katahira.com

Valid Email Server
Domain Lookup › katahira.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
katahira.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 03:44:35 UTC · ↺ Refresh

MX Hostnames

  • mxin2.airnet.ne.jp
  • mxin1.airnet.ne.jp

MX Priorities

  • mxin2.airnet.ne.jp: 10
  • mxin1.airnet.ne.jp: 10

A / AAAA Records

  • 162.43.122.91 ↩ sv14490.xserver.jp

Mail Server IPs

  • 210.159.71.91 ↩ mxin2-01.airnet.ne.jp
  • 210.166.71.21 ↩ mxin2-02.airnet.ne.jp
  • 210.159.71.90 ↩ mxin1-01.airnet.ne.jp
  • 210.166.71.20 ↩ mxin1-02.airnet.ne.jp

SOA Record

Raw SOA dns1.air.ne.jp support.air.ad.jp 2023071326 3600 1800 2592000 3600
Primary NS (mname)
dns1.air.ne.jp
Admin Email (rname)
support@air.ad.jp
Serial
2023071326
Refresh
3600s
Retry
1800s
Expire
2592000s
Minimum TTL
3600s

Nameservers (NS)

dns2.air.ne.jp
dns3.air.ne.jp
dns4.air.ne.jp
dns1.air.ne.jp

SPF Record

✓ Strict (-all)
v=spf1 mx:mail.katahira.com ip4:121.119.174.0/24 ip4:210.166.70.90 -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

✓ 1 found
s1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: s1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 mx:mail.katahira.com ip4:121.119.174.0/24 ip4:210.166.70.90 -all
  • MS=ms69647195
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