Domain Overview
DNS: ✓ 18h ago
Checker: ✓ 18h ago
nullsto.edu.pl
Disposable
✓ Yes
Unknown
⚠ Yes
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-20 11:06:14 UTC · ↺ Refresh
MX Hostnames
- mx.stackmail.com
MX Priorities
- mx.stackmail.com: 10
A / AAAA Records
- 185.158.133.1 ↩ lovable-app-cd-1-4.p.l5e.io
Mail Server IPs
- 185.151.28.67 ↩ mx.stackmail.com
SOA Record
Raw SOA
ns1.regery.net support.regery.com 2026010689 86400 10800 604800 3600
Primary NS (mname)
ns1.regery.net
Admin Email (rname)
support@regery.com
Serial
2026010689
Refresh
86400s
Retry
10800s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns2.regery.net
ns3.regery.net
ns1.regery.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.stackmail.com a mx -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict 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
3 records- _dmarc.nullsto.edu.pl
- s1._domainkey.nullsto.edu.pl
- SPFv=spf1 include:spf.stackmail.com a mx -all
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