When you press the “Block Now” button on your CPR Call Blocker, have you ever wondered what happens next?
Behind that simple action lies a smart process that logs, categorises, and manages blocked numbers — helping your call blocker learn and improve over time. This article explains exactly how that system works and why it matters for protecting your home from scam and nuisance calls.
How Do Landline Call Blockers Store Blocked Numbers?
Every time you block a number, your call blocker records it in its internal memory. Think of it as a personal “blacklist” unique to your device.
Depending on the model:
- The CPR Call Blocker V5000 can store up to 5,000 blocked numbers.
- The V100K model includes over 100,000 pre-programmed scam numbers, plus space for new entries.
- Each blocked number is saved until you choose to delete or overwrite it.
- Numbers are stored securely in the device’s memory and remain there even if you unplug the blocker or lose power.
Summary: Call blockers create a personal blacklist in their memory, storing thousands of blocked numbers safely and permanently.
What Happens When You Block a Number?
Here’s the typical process after pressing “Block Now”:
- The device captures the caller ID of the incoming call.
- The number is added to your personal blocked list.
- Future calls from that number are automatically rejected before your phone rings.
- A record is stored in your call log for future reference.
- Some models even allow you to review and manually unblock numbers if needed.
Summary: When you block a number, your call blocker logs it instantly and rejects all future attempts from that number.
How Are Pre-Programmed Numbers Managed?
Pre-programmed numbers are scam and nuisance numbers compiled by trusted sources like Ofcom reports and telecom databases.
Devices like the CPR Call Blocker V100K come pre-loaded with tens of thousands of known scam numbers, including:
- International telemarketers.
- HMRC scam lines.
- Automated robocallers.
- Fraudulent technical support numbers.
These lists are curated from public and regulatory data to ensure you’re protected from the most common scams right out of the box.
Summary: Pre-programmed databases block known scam numbers before they reach your phone, providing instant, automatic protection.
Can You Manage or Edit Your Blocked Numbers?
Yes, users have full control. Most call blockers let you:
- Manually unblock numbers if added by mistake.
- View your block list using a display screen or sequence of buttons.
- Add new numbers manually, even if they haven’t called you yet.
- Reset the device if you want to clear your entire history.
This flexibility ensures genuine callers never get stuck on your blocked list permanently.
Summary: You can view, delete, or add blocked numbers anytime, giving full control over your call security.
What Happens When the Memory Fills Up?
When the device reaches its maximum capacity:
- New blocked numbers overwrite the oldest entries, keeping protection up to date.
- Pre-programmed scam lists remain unaffected.
- You can reset or clear the device at any time.
The system ensures that your call blocker always keeps space for new threats.
Summary: If storage fills, newer blocked numbers replace the oldest, ensuring your call blocker stays current and effective.
How Secure Is the Stored Data?
Your blocked list is stored locally — not online — meaning it can’t be accessed or shared externally. There’s no internet connection, no cloud storage, and no risk of data leaks.
This design makes landline call blockers one of the safest privacy tools available.
Summary: All blocked data stays offline, ensuring total privacy and zero exposure to cyber risks.
Conclusion
Landline call blockers don’t just reject nuisance calls — they remember them. By storing blocked numbers locally, maintaining pre-programmed scam lists, and giving users control, they ensure long-term, secure protection for your entire household.
Explore CPR Call Blocker V100K to protect your loved ones today.
FAQs
Q: How many numbers can my call blocker store?
A: Depending on the model, between 2,000 and 100,000 numbers.
Q: Will blocked numbers stay saved if I unplug the device?
A: Yes—all data is stored securely in non-volatile memory.
Q: Can I remove a number if it was blocked by mistake?
A: Absolutely—just use the unblock or delete function.
Q: Are stored numbers shared with anyone?
A: No, all data remains local and private.
