Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
studio-manuela.cz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 00:35:18 UTC · ↺ Refresh
MX Hostnames
- mx20.websupport.cz
- mx10.websupport.cz
MX Priorities
- mx10.websupport.cz: 10
- mx20.websupport.cz: 100
A / AAAA Records
- 37.9.175.165 ↩ ing.r3.websupport.sk
- 2a00:4b40:aaaa:2005::7 (no PTR)
Mail Server IPs
- 45.13.137.103 ↩ m1-u5-mx.websupport.cz
- 2a00:4b40:aaaa:2101:45:13:137:103 ↩ mx10.websupport.cz
- 45.13.137.104 ↩ m1-u6-mx.websupport.cz
- 2a00:4b40:aaaa:2101:45:13:137:104 ↩ mx20.websupport.cz
SOA Record
Raw SOA
ns1.websupport.cz admin.websupport.cz 1714692182 7200 2048 1048576 2560
Primary NS (mname)
ns1.websupport.cz
Admin Email (rname)
admin@websupport.cz
Serial
1714692182
Refresh
7200s
Retry
2048s
Expire
1048576s
Minimum TTL
2560s
Nameservers (NS)
ns2.websupport.cz
ns3.websupport.eu
ns1.websupport.cz
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx include:_spf.m1.websupport.sk ?all
📊 DNS lookups: 3/10
? Neutral (?all) — no enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- spf2.0/pra a mx include:_sid.m1.websupport.sk ?all
- SPFv=spf1 a mx include:_spf.m1.websupport.sk ?all
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