Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nextra.cz
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-14 03:17:58 UTC · ↺ Refresh
MX Hostnames
- vmail.nextra.cz
- bmx.cz.net
MX Priorities
- bmx.cz.net: 100
- vmail.nextra.cz: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 193.85.201.247 ↩ etrn.pvtnet.cz
- 193.179.158.50 ↩ smtp-b.sp.cz.net
SOA Record
Raw SOA
dns.nextra.cz hostmaster.cz.net 2024051600 28800 7200 604800 86400
Primary NS (mname)
dns.nextra.cz
Admin Email (rname)
hostmaster@cz.net
Serial
2024051600
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
sns.nextra.cz
dns.nextra.cz
SPF Record
✓ Soft Fail (~all)
v=spf1 mx ip4:193.85.5.19 ip4:193.85.5.39 ip4:193.85.2.13 ip4:193.85.1.72 ip4:212.65.193.3 ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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 mx ip4:193.85.5.19 ip4:193.85.5.39 ip4:193.85.2.13 ip4:193.85.1.72 ip4:212.65.193.3 ~all
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