alpha-web.jp

Valid Email Server
Domain Lookup › alpha-web.jp

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
alpha-web.jp
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-23 05:11:03 UTC · ↺ Refresh

MX Hostnames

  • mxi.alpha-prm.jp

MX Priorities

  • mxi.alpha-prm.jp: 100

A / AAAA Records

  • 157.205.252.1 ↩ portal.alpha-web.jp

Mail Server IPs

  • 157.205.8.22 ↩ mxi.alpha-prm.jp

SOA Record

Raw SOA kotetsu.alpha-lt.net postmaster.alpha-web.ne.jp 2025091710 10800 3600 604800 3600
Primary NS (mname)
kotetsu.alpha-lt.net
Admin Email (rname)
postmaster@alpha-web.ne.jp
Serial
2025091710
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

kotetsu.alpha-lt.net
amdns03.alpha-mail.jp
tsukuba.aics.ne.jp

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:157.205.205.0/25 ip4:157.205.252.0/28 ip4:157.205.13.206 include:pdc.alpha-web.jp include:spf.alpha-prm.jp include:spf.aams4.jp include:obs.alpha-web.jp ~all
📊 DNS lookups: 4/10
~ 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

3 records
  • SPFv=spf1 ip4:157.205.205.0/25 ip4:157.205.252.0/28 ip4:157.205.13.206 include:pdc.alpha-web.jp include:spf.alpha-prm.jp include:spf.aams4.jp include:obs.alpha-web.jp ~all
  • 4qoFGt7WfEh1Vf0kk2MmPRUbAFGS8J
  • google-site-verification=ynnOA9FXiv0xYDQwUp7wMMushZrVORDYyOWOrXJLXkI
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