Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
xplorefitness.cz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-17 21:11:35 UTC · ↺ Refresh
MX Hostnames
- mx.blueboard.cz
MX Priorities
- mx.blueboard.cz: 10
A / AAAA Records
- 178.251.187.9 ↩ hyperion.blueboard.cz
- 2a00:1ed0:45::15 ↩ hyperion.blueboard.cz
Mail Server IPs
- 81.0.209.130 ↩ mx.blueboard.cz
- 2001:1528:240::ca ↩ mx.blueboard.cz
SOA Record
Raw SOA
shinzon.blueboard.cz hostmaster.blueboard.cz 2018041667 10800 3600 604800 38400
Primary NS (mname)
shinzon.blueboard.cz
Admin Email (rname)
hostmaster@blueboard.cz
Serial
2018041667
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
38400s
Nameservers (NS)
shinzon.blueboard.cz
ns2.blueboard.cz
SPF Record
✓ Strict (-all)
v=spf1 a mx include:spf.blueboard.cz -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✗ None detectedNo 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 mx include:spf.blueboard.cz -all
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