Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
skylark.co.jp
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 09:00:24 UTC · ↺ Refresh
MX Hostnames
- alt2.aspmx.l.google.com
- alt3.aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt1.aspmx.l.google.com
- aspmx.l.google.com
MX Priorities
- aspmx.l.google.com: 1
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 142.251.167.27 ↩ ww-in-f27.1e100.net
- 2607:f8b0:4004:c09::1a ↩ bh-in-f26.1e100.net
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1b ↩ ws-in-x1b.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
SOA Record
Raw SOA
dns11.skylark.co.jp system-tantou.skylark.co.jp 2025121022 3600 600 86400 3600
Primary NS (mname)
dns11.skylark.co.jp
Admin Email (rname)
system-tantou@skylark.co.jp
Serial
2025121022
Refresh
3600s
Retry
600s
Expire
86400s
Minimum TTL
3600s
Nameservers (NS)
dns12.skylark.co.jp
ns-tk021.ocn.ad.jp
dns11.skylark.co.jp
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:_spf.activegate-ss.jp include:fc9570.cuenote.jp include:amazonses.com include:mdmessi.maildealer.jp ip4:210.166.72.35 ip4:210.166.72.36 ip4:210.166.72.37 ip4:210.166.72.24 ip4:210.166.72.25 ip4:52.193.153.193 ip4:54.238.214.77 ip4:133.242.56.84 ip4:133.242.56.85 ip4:133.186.35.44 ip4:35.75.96.246 ip4:52.68.112.94 ip4:13.71.133.58 ip4:124.146.170.8 ip4:124.146.170.9 ip4:157.205.202.218 ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; 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]
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
10 records- google-site-verification=aLCOBNPU-aFW2nTMnUqTXPFQ2q-2mSTmS3MmOc2leDg
- google-site-verification=n47TqUIsMFZpJxBpeUurZM-MbUiOGcXIzsoIgLmGV9w
- google-site-verification=I4cqOq5yqHMPS4BqDTgJnRYPoQaCrj_aGQCxBh7YeUk
- google-site-verification=9PR00kI0d59CyHZ9gvlTVz1dibLhgW-QB8nIOgdVk6Q
- google-site-verification=EW-QlO0dovRoqtbeDADBDmL3oHssCeTrFA48104SAdI
- trend-micro-v1-domain-verification.37b208a9ffd8383d64f804bdd5c7baea=c1e653a5-ee6b-4aee-a067-73dd36d97792
- apple-domain-verification=2uN1fveklVDvSAbD
- facebook-domain-verification=o4o25mcrt60ghkzhv8jeebujsitc2g
- google-site-verification=6mQOPb7tYimTKiQBJfCeIVzDwyyFnTuwhJjcc2lsKIc
- SPFv=spf1 include:_spf.google.com include:_spf.activegate-ss.jp include:fc9570.cuenote.jp include:amazonses.com include:mdmessi.maildealer.jp ip4:210.166.72.35 ip4:210.166.72.36 ip4:210.166.72.37 ip4:210.166.72.24 ip4:210.166.72.25 ip4:52.193.153.193 ip4:54.238.214.77 ip4:133.242.56.84 ip4:133.242.56.85 ip4:133.186.35.44 ip4:35.75.96.246 ip4:52.68.112.94 ip4:13.71.133.58 ip4:124.146.170.8 ip4:124.146.170.9 ip4:157.205.202.218 ~all
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