Email domain

Is kyois.com a disposable email?

Yes. kyois.com 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

kyois.com

  • Disposableyes
  • Free providerno
  • Receives mailyes
  • Mail servers2 found
  • SPFpublished
  • DMARCnone
Risk score90
  • disposable_domainkyois.com hands out throwaway inboxes.

DNS facts

Domain
kyois.com
MX records
em4.catchservers.com, mx4.catchservers.net
SPF
v=spf1 +a +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 kyois.com. Shared hosting does not establish common ownership.

Block it in code

Stop kyois.com signups.

Check each new address and refuse when disposable is true. One call covers kyois.com, 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@kyois.com"}'
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@kyois.com"},
    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@kyois.com"}),
});
const result = await res.json();
console.log(result.risk.verdict, result.risk.reasons);
Questions

About kyois.com

Is kyois.com a disposable email domain?

Yes. kyois.com 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 kyois.com 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 kyois.com's sister domains and new ones.

Where does kyois.com email go?

Its mail is handled by em4.catchservers.com, mx4.catchservers.net. 30 other throwaway domains use the same mail servers.

← More throwaway domains starting with K