Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
studentinbox.edu.pl
Disposable
✓ Yes
Unknown
⚠ Yes
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-14 07:42:20 UTC · ↺ Refresh
MX Hostnames
- mail.tempmailx.xyz
MX Priorities
- mail.tempmailx.xyz: 10
A / AAAA Records
- 172.67.174.240 (no PTR)
- 104.21.31.39 (no PTR)
- 2606:4700:130:436c:6f75:6466:6c61:7265 (no PTR)
Mail Server IPs
- 185.165.46.94 ↩ tr15.burtinet.com
SOA Record
Raw SOA
aliza.ns.cloudflare.com dns.cloudflare.com 2398700059 10000 2400 604800 1800
Primary NS (mname)
aliza.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398700059
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
aliza.ns.cloudflare.com
yahir.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:185.165.46.94 include:relay.mailbaby.net ~all
📊 DNS lookups: 3/10
~ 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 a mx ip4:185.165.46.94 include:relay.mailbaby.net ~all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for studentinbox.edu.pl
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits