Are you looking for ways to sign up a phone number for telemarketing calls or spam calls—either for fun, a prank, or to understand how these systems work?
Whether you’re tired of scam calls yourself or planning a prank on a friend, there are certain free websites where you can sign up a number and watch it get bombarded with spam and telemarketing calls.
Below, we’ve listed reliable websites that are known for generating marketing calls and filling phone numbers with promotional messages. This post will also answer related search questions like:
- How to sign someone up for spam calls?
- Can you register a number for telemarketing for free?
- Where can I find spam call sign up forms?
Let’s dive in.

Legal & Ethical Note
This content is for educational and informational purposes only. Signing someone up for telemarketing or spam calls without consent can be unethical or even illegal in some countries. Use responsibly.
Top Free Websites to Sign Up for Telemarketing or Spam Calls
| Website / Service | What It Does | Type | Free? |
|---|---|---|---|
| FreeSamples.org | Collects numbers for marketing giveaways | Telemarketing | ✅ |
| WinPrizesNow.com | Signs up users for sweepstakes with follow-up calls | Spam/Promotions | ✅ |
| SurveyMonkey (3rd Party) | Redirects to survey partners that collect phone numbers | Telemarketing | ✅ |
| FakePrizeCalls.com | Sends fake sweepstake & promotion calls | Spam Calls | ✅ |
| Newsletter Blaster | Adds numbers to SMS & call marketing databases | SMS/Calls | ✅ |
How to Sign Someone Up for Spam Calls (Safely)
- Go to a giveaway or promo website like FreeSamples.org.
- Enter a valid phone number (preferably with consent).
- Choose marketing preferences or skip them to trigger follow-up calls.
- Submit the form — done! Calls may begin within hours or days.
These websites collect user data and sell it to telemarketing agencies, which results in frequent promotional calls.
Use Cases (Why People Do This)
- Pranks on friends (with their knowledge or as harmless fun).
- Testing how fast spam calls begin.
- Checking which companies leak data.
- Teaching cybersecurity awareness.
Tips Before You Use These Sites
- Always use a disposable or virtual number (like Google Voice).
- Don’t enter your main number—unless you’re ready for endless calls.
- Avoid giving real addresses if the site seems shady.
- Don’t use for harassment or revenge—this could violate privacy laws.
FAQs
Q1: Can I really sign up a phone number for spam calls for free?
Yes. Many websites collect user info for marketing and forward it to third-party advertisers who call back.
Q2: Is it illegal to sign someone else up?
If it’s done without consent, it can be considered harassment or misuse of personal data depending on your country.
Q3: How fast do spam calls start after sign-up?
Usually within 24 to 48 hours. Some sites are faster.
Q4: How do these websites make money?
They sell collected data to advertising firms, sweepstake marketers, or robocall services.
Final Thoughts
If you’re curious about how telemarketers get your number, or want to explore the shady world of spam call sign-up websites, these platforms give a glimpse into the data-selling ecosystem.
Use responsibly. Better yet, educate others on how to avoid these traps — and always keep your real number private.
Pro Tip: Use BurnerApp or TextNow for disposable numbers when testing or pranking with sign-up services.
