nihon-u.ac.jp

Valid Email Server
Domain Lookup › nihon-u.ac.jp

Domain Overview

DNS: ✓ 1d ago Checker: ✓ 1d ago
nihon-u.ac.jp
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-27 09:07:14 UTC · ↺ Refresh

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MX Hostnames

  • alt4.aspmx.l.google.com
  • aspmx.l.google.com
  • alt1.aspmx.l.google.com
  • alt3.aspmx.l.google.com
  • alt2.aspmx.l.google.com

MX Priorities

  • alt1.aspmx.l.google.com: 5
  • alt2.aspmx.l.google.com: 5
  • alt4.aspmx.l.google.com: 10
  • aspmx.l.google.com: 1
  • alt3.aspmx.l.google.com: 10

A / AAAA Records

  • 34.95.124.173
  • 2600:1901::6a1c:0:0:0:0

Mail Server IPs

  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 173.194.76.26 ↩ ws-in-f26.1e100.net
  • 2a00:1450:400c:c00::1b ↩ ws-in-x1b.1e100.net
  • 142.251.179.26 ↩ pd-in-f26.1e100.net
  • 2607:f8b0:4004:c06::1b ↩ bg-in-f27.1e100.net
  • 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net

SOA Record

Raw SOA ns.nihon-u.ac.jp hostmaster.nihon-u.ac.jp 2026052600 3600 900 604800 86400
Primary NS (mname)
ns.nihon-u.ac.jp
Admin Email (rname)
hostmaster@nihon-u.ac.jp
Serial
2026052600
Refresh
3600s
Retry
900s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns007-zydu3gprqr7eyh2s.z.d-53.jp
dns-x.sinet.ad.jp
ns007-zydu3gprqr7eyh2s.z.d-53.info
ns007-zydu3gprqr7eyh2s.z.d-53.net

SPF Record

✓ Strict (-all)
v=spf1 ip4:133.43.0.0/16 ip6:2001:df6:8000::/48 include:_spf.google.com include:amazonses.com include:spf.securemx.jp include:spf.curumeru.jp include:_spf.activegate-ss.jp include:mail.ma-jin.jp include:spf.protection.outlook.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; sp=none; rua=mailto:[email protected]; ruf=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

DKIM Selectors

✓ 3 found
google._domainkey
s1._domainkey
s2._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

7 records
  • apple-domain-verification=O0zzWzVYRObs4WF3
  • google-site-verification=e-V4-uT_BwYhj0snR1hbSySFe0APSRiPRgee1tQCMig
  • adobe-idp-site-verification=9943308136e4952be2fa5562f529fe8fc038c09cacfe218a3d1c0f170a626b73
  • SPFv=spf1 ip4:133.43.0.0/16 ip6:2001:df6:8000::/48 include:_spf.google.com include:amazonses.com include:spf.securemx.jp include:spf.curumeru.jp include:_spf.activegate-ss.jp include:mail.ma-jin.jp include:spf.protection.outlook.com -all
  • MS=6FD59391876E669FDD71963551966D1E13E76863
  • ms-domain-verification=1b8d7a15-5846-48f1-8565-9e907ee5ea82
  • google-site-verification=M1YAiMi3sG_4pJbxFrChJ1B14_WOEQfhuVaXFgadxW8
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