How to Block a Number on a Landline: Quick & Easy Methods

Have you ever wondered how to stop unwanted calls from interrupting your peace? Whether it’s telemarketers, robocalls, or a persistent caller, blocking a number on a landline is not as complicated as it seems. This guide walks you through various methods to block numbers on your landline effectively, catering to different service providers and devices.

>> Also Read: How to Block a Number on a Landline: Easy Ways for 2025

Why Would You Need to Block a Number on a Landline?

Unwanted calls are more than a nuisance; they can disrupt your day, compromise your privacy, and even pose security risks. Blocking a number is an easy way to regain control over your phone line.

Some common reasons for blocking a number include:

• Persistent telemarketers
• Robocalls or spam calls
• Harassing or threatening calls

Understanding your reason will help you choose the best solution.

Does Your Landline Support Call Blocking?

Before diving into solutions, check if your landline has built-in call-blocking capabilities. This depends on your service provider and the type of phone you’re using.

Steps to Check:

1. Contact your service provider and ask if call-blocking features are included in your plan.
2. Check your device’s manual for specific instructions on enabling blocking features.
3. Verify if you can use third-party call-blocking devices or services.

>> Also Read: How Can You Block Unwanted Calls on a Landline for Free?

Methods to Block a Number on a Landline

Method 1. Use Built-in Call Blocking Features

Most modern landlines come with built-in call-blocking options. Here’s how to use them:

• Dial a code: Many providers use *codes like 60 to block numbers.
• Add numbers to a blocklist: Follow voice prompts to enter the unwanted number.
• Confirm the process by hanging up or pressing a key as instructed.

Method 2. Enable “Anonymous Call Rejection”

If you’re plagued by calls from numbers marked as “Private” or “Unknown,” this feature can help.

• How to activate: Dial a specific code (*77 for most providers).
• How to deactivate: Use the corresponding deactivation code (*87).

Method 3. Contact Your Service Provider

Your phone company may offer advanced call-blocking tools as part of your subscription.

Popular options include:

• AT&T Call Protect
• Verizon Call Filter
• CenturyLink Call Rejection

Each provider has unique steps for enabling these services. Check their website or customer support for guidance.

Method 4. Use a Call-Blocking Device

Standalone call-blocking devices are small gadgets you connect to your landline. These devices allow you to:

• Block up to 1,000+ numbers.
• Automatically reject spam calls using a pre-programmed database.
• Add numbers manually for customized blocking.

Popular options:

• CPR V5000 Call Blocker
• Panasonic Link2Cell

Method 5. Report Persistent Spam Calls

If the same unwanted caller continues to harass you, report them to authorities or consumer protection agencies. Websites like the FTC’s Do Not Call Registry let you file complaints about spam calls.

>> Also Read: How to Block a Number on Samsung Phone

Popular Service Providers and Their Call Blocking Codes

AT&T

• Blocking Code: *60
• Additional Services: AT&T Call Protect

Verizon

• Blocking Code: *80
• Additional Services: Verizon Call Filter

CenturyLink

• Blocking Code: *77
• Additional Services: Anonymous Call Rejection

Comcast Xfinity

• Blocking Code: *60
• Additional Services: Nomorobo Partnership

>> Also Read: How to Block a Number on Android: Step-by-Step Guide

How to Block a Number Without Built-in Features

Older landlines or basic models might lack built-in call-blocking options. Here are some alternative methods:

Manual Call Screening

• Answer calls only from known numbers.
• Use an answering machine to screen calls.

Switch to a VOIP Line

VOIP (Voice Over Internet Protocol) services like Skype or Google Voice often come with advanced blocking features.

>> Also Read: How to Block a Number on iPhone: Step-by-step Guide

How to Block a Number on Specific Landline Providers

Blocking a number on a landline often depends on your service provider. Here's a breakdown of how to manage unwanted calls for major providers, with specific steps for enabling their call-blocking features.

1. AT&T: Blocking Numbers on a Landline

AT&T offers several ways to block unwanted calls, depending on whether you use traditional or digital landline services.

Steps for Traditional Landlines

1. Activate Call Blocking: Dial *60 on your phone.
2. Add a Number: Follow the voice prompts to enter the number you want to block.
3. Review the Block List: Dial *80 to review or remove numbers from the list.

Steps for Digital Landlines (AT&T U-verse)

1. Log into your AT&T account.
2. Navigate to the “Phone Features” section.
3. Select “Call Blocking” and add the unwanted numbers to your block list.

2. Verizon: Blocking Numbers on a Landline

Verizon’s options vary based on whether you use a traditional landline or a Fios Digital Voice line.

Traditional Landlines

1. Dial *80 to activate call-blocking features.
2. Follow the prompts to add the number to your block list.

Fios Digital Voice

1. Log into your Verizon account at My Verizon.
2. Click “Call and Message Blocking” under the Features section.
3. Add up to 100 numbers to your block list.

3. Spectrum: Blocking Numbers on a Landline

Spectrum provides robust call-blocking features for its Voice customers.

Steps to Block Numbers

1. Log into your Spectrum account online.
2. Go to the Voice section and select “Manage Call Guard.”
3. Activate Call Guard to block spam calls automatically.
4. Add specific numbers to your block list under “Custom Call Blocking.”

Spectrum also works with Nomorobo, a third-party service that blocks robocalls effectively.

4. Xfinity: Blocking Numbers on a Landline

Xfinity Voice subscribers can use advanced features to block unwanted calls.

Steps to Enable Blocking

1. Log into your Xfinity account at Xfinity Voice.
2. Navigate to “Voice Settings” and select “Call Blocking.”
3. Add numbers manually or enable spam filtering to block robocalls automatically.

5. CenturyLink: Blocking Numbers on a Landline

CenturyLink offers anonymous call rejection and selective call rejection for blocking unwanted numbers.

Steps to Activate

1. Dial *60 for selective call rejection.
2. Follow the prompts to add the number you want to block.
3. Use *77 to enable anonymous call rejection.

For detailed instructions, visit the CenturyLink Support Page.

6. Frontier: Blocking Numbers on a Landline

Frontier provides call-blocking options for digital and traditional landlines.

Steps for Blocking Calls

1. Dial *60 to activate call-blocking features.
2. Enter the number you wish to block when prompted.

For digital lines, manage blocking features through Frontier’s online portal.

7. Cox Communications: Blocking Numbers on a Landline

Cox offers several call-blocking options, including Selective Call Rejection.

Steps to Block Numbers

1. Dial *60 and follow the prompts.
2. Add the unwanted number to your rejection list.
3. For robocall blocking, activate Cox’s Nomorobo integration.

8. Optimum: Blocking Numbers on a Landline

Optimum Voice customers can block specific numbers and enable spam filters.

Steps to Enable Blocking

1. Log into your Optimum account online.
2. Navigate to “My Features” and select “Call Blocking.”
3. Add numbers manually or enable automatic spam filtering.

>> Also Read: How to Unblock a Number on iPhone: Quickly and Easily

Comparison of Landline Call-Blocking Features by Provider

AT&T

• Feature: Built-in call blocking
• Max Numbers Blocked: 10-100 (depends on plan)
• Special Codes: 60, 80
• Third-Party Support: No

Verizon

• Feature: Call and Message Blocking
• Max Numbers Blocked: Up to 100
• Special Codes: *80
• Third-Party Support: Yes (Digital Voice)

Spectrum

• Feature: Custom Call Blocking
• Max Numbers Blocked: Unlimited (via app)
• Special Codes: None
• Third-Party Support: Yes (Nomorobo)

Xfinity

• Feature: Call Blocking + Spam Filter
• Max Numbers Blocked: 25-100
• Special Codes: None
• Third-Party Support: Yes

CenturyLink

• Feature: Selective Call Rejection
• Max Numbers Blocked: 10
• Special Codes: 60, 77
• Third-Party Support: No

Cox Communications

• Feature: Selective Call Rejection
• Max Numbers Blocked: 30
• Special Codes: *60
• Third-Party Support: Yes (Nomorobo)

Optimum

• Feature: Call Blocking + Spam Filter
• Max Numbers Blocked: Unlimited (via app)
• Special Codes: None
• Third-Party Support: Yes

>> Also Read: How to Unblock a Phone Number on Android (Easy Ways)

Tips for Effective Call Blocking Across Providers

• Regularly update your block list: Remove old numbers and add new ones as needed.
• Use third-party services: Tools like Nomorobo and Hiya can enhance your landline’s call-blocking capabilities.
• Check for provider upgrades: Many service providers regularly update their call-blocking tools.

Tips to Minimize Unwanted Calls

Blocking numbers is a reactive step. Here are proactive measures you can take to prevent future disruptions:

1. Register your number with the Do Not Call Registry.
2. Avoid sharing your landline number online.
3. Use apps like Nomorobo to filter robocalls automatically.

>> Also Read: How to See Blocked Numbers on iPhone: Step-by-Step Guide

FAQs About Blocking Numbers on Landlines

Can I block an entire area code?

Yes, some call-blocking devices and providers allow you to block calls by area code.

Do I need to pay for call-blocking features?

Many basic services are free, but some advanced tools may require a subscription.

Can I unblock a number?

Yes, most providers and devices allow you to remove numbers from your blocklist.

Conclusion

Blocking a number on a landline doesn’t have to be stressful. Whether you use built-in features, contact your provider, or invest in a call-blocking device, there are plenty of solutions available. Take charge of your phone line today and enjoy uninterrupted peace!