usovsko.cz

Valid Email Server
Domain Lookup › usovsko.cz

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
usovsko.cz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-14 03:58:08 UTC · ↺ Refresh

MX Hostnames

  • etrn.nextra.cz
  • mail2.usovsko.cz

MX Priorities

  • mail2.usovsko.cz: 5
  • etrn.nextra.cz: 20

A / AAAA Records

  • 37.9.175.164 ↩ ing.r3.websupport.sk
  • 2a00:4b40:aaaa:2005::5 (no PTR)

Mail Server IPs

  • 85.163.234.242 ↩ mail2.usovsko.cz
  • 193.85.201.247 ↩ relay.contactel.cz

SOA Record

Raw SOA ns1.websupport.cz admin.websupport.cz 1738687211 7200 2048 1048576 2560
Primary NS (mname)
ns1.websupport.cz
Admin Email (rname)
admin@websupport.cz
Serial
1738687211
Refresh
7200s
Retry
2048s
Expire
1048576s
Minimum TTL
2560s

Nameservers (NS)

ns1.websupport.cz
ns2.websupport.cz
ns3.websupport.eu

SPF Record

✓ Soft Fail (~all)
v=spf1 a mx include:_spf.websupport.cz include:_spf.m1.websupport.sk ?all
📊 DNS lookups: 4/10
? Neutral (?all) — no 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

2 records
  • SPFv=spf1 a mx include:_spf.websupport.cz include:_spf.m1.websupport.sk ?all
  • spf2.0/pra a mx include:_sid.websupport.cz include:_sid.m1.websupport.sk ?all
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