Email domain

Is klassmaster.net a disposable email?

Yes. klassmaster.net appears in our disposable-email domain list. This is a domain-level signal, not proof that a particular person or mailbox is fraudulent.

Domain check Listed

klassmaster.net

  • Disposableyes
  • Free providerno
  • Receives mailyes
  • Mail servers1 found
  • SPFpublished
  • DMARCnone
Risk score90
  • disposable_domainklassmaster.net hands out throwaway inboxes.

DNS facts

Domain
klassmaster.net
MX records
mail.casadorock.com
SPF
v=spf1 mx -all
DMARC
Not published
Checked
2026-10-21

Check another address →

Throwaway domains on the same mail servers

These listed domains share mail infrastructure with klassmaster.net. Shared hosting does not establish common ownership.

Block it in code

Stop klassmaster.net signups.

Check each new address and refuse when disposable is true. One call covers klassmaster.net, its sister domains and new throwaway brands.

curl https://veqen-app.com/v1/email/check \
  -H "Authorization: Bearer $VEQEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"email": "someone@klassmaster.net"}'
import os, requests

r = requests.post(
    "https://veqen-app.com/v1/email/check",
    headers={"Authorization": f"Bearer {os.environ['VEQEN_API_KEY']}"},
    json={"email": "someone@klassmaster.net"},
    timeout=10,
)
result = r.json()
print(result["risk"]["verdict"], result["risk"]["reasons"])
const res = await fetch("https://veqen-app.com/v1/email/check", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.VEQEN_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({"email": "someone@klassmaster.net"}),
});
const result = await res.json();
console.log(result.risk.verdict, result.risk.reasons);
Questions

About klassmaster.net

Is klassmaster.net a disposable email domain?

Yes. klassmaster.net appears in our disposable-email domain list. This is a domain-level signal, not proof that a particular person or mailbox is fraudulent.

How do I block klassmaster.net at signup?

Check the domain of each new address. With the Veqen API, call /v1/email/check and refuse when disposable is true; that also covers klassmaster.net's sister domains and new ones.

Where does klassmaster.net email go?

Its mail is handled by mail.casadorock.com. 30 other throwaway domains use the same mail servers.

← More throwaway domains starting with K