a-it.jp

Valid Email Server
Domain Lookup › a-it.jp

Domain Overview

DNS: ✓ 5h ago Checker: ✓ 5h ago
a-it.jp
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-20 18:07:42 UTC · ↺ Refresh

MX Hostnames

  • aspmx5.googlemail.com
  • aspmx.l.google.com
  • aspmx3.googlemail.com
  • alt1.aspmx.l.google.com
  • alt2.aspmx.l.google.com
  • aspmx4.googlemail.com
  • aspmx2.googlemail.com

MX Priorities

  • aspmx4.googlemail.com: 10
  • aspmx5.googlemail.com: 10
  • aspmx2.googlemail.com: 10
  • alt1.aspmx.l.google.com: 5
  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 10
  • aspmx3.googlemail.com: 10

A / AAAA Records

  • 221.251.189.210 ↩ 221x251x189x210.ap221.ftth.ucom.ne.jp

Mail Server IPs

  • 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
  • 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
  • 173.194.76.27 ↩ ws-in-f27.1e100.net
  • 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net

SOA Record

Raw SOA ns1.gslb4.sakura.ne.jp noc.sakura.ad.jp 1 3600 900 2419200 300
Primary NS (mname)
ns1.gslb4.sakura.ne.jp
Admin Email (rname)
noc@sakura.ad.jp
Serial
1
Refresh
3600s
Retry
900s
Expire
2419200s
Minimum TTL
300s

Nameservers (NS)

ns2.gslb4.sakura.ne.jp
ns1.gslb4.sakura.ne.jp

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:222.230.10.250 ip4:49.212.204.110 ip4:49.212.148.183 ip6:2403:3a00:202:1127:49:212:204:110 include:_spf.google.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 2 found
google._domainkey
s1._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google

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

All TXT Records

2 records
  • MS=ms42625227
  • SPFv=spf1 ip4:222.230.10.250 ip4:49.212.204.110 ip4:49.212.148.183 ip6:2403:3a00:202:1127:49:212:204:110 include:_spf.google.com ~all
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