chubu-esd.net

Valid Email Server
Domain Lookup › chubu-esd.net

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
chubu-esd.net
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-31 20:29:13 UTC · ↺ Refresh

MX Hostnames

  • chubu-esd.net

MX Priorities

  • chubu-esd.net: 10

A / AAAA Records

  • 219.94.155.230 ↩ www440b.sakura.ne.jp
  • 2403:3a00:106:4:219:94:155:230 ↩ www440b.sakura.ne.jp

Mail Server IPs

  • 219.94.155.230 ↩ www440b.sakura.ne.jp
  • 2403:3a00:106:4:219:94:155:230 ↩ www440b.sakura.ne.jp

SOA Record

Raw SOA master.dns.ne.jp tech.sakura.ad.jp 2024101501 3600 900 3600000 3600
Primary NS (mname)
master.dns.ne.jp
Admin Email (rname)
tech@sakura.ad.jp
Serial
2024101501
Refresh
3600s
Retry
900s
Expire
3600000s
Minimum TTL
3600s

Nameservers (NS)

ns2.dns.ne.jp
ns1.dns.ne.jp

SPF Record

✓ Soft Fail (~all)
v=spf1 a:www440b.sakura.ne.jp mx ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate 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

1 record
  • SPFv=spf1 a:www440b.sakura.ne.jp mx ~all
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