How to Block a Phone Number on a Landline

To block a phone number on a landline, use your provider’s call-blocking feature or a compatible handset’s blocked-number list. The correct method depends on whether the landline is a traditional phone line, a digital home phone service, or a VoIP service.

What type of landline service do you have?

Identify the service type before changing any settings because landline phone number blocking is not handled the same way on every connection.

• A traditional phone line carries calls through a telephone wall jack. Blocking may be controlled by a provider feature, a star code, or the handset.

• A digital home phone service usually runs through a modem or gateway supplied for home communications. Blocking controls may appear in the provider account.

• A VoIP landline sends calls through an internet connection. VoIP means Voice over Internet Protocol. Its blocking tools are commonly managed through an online account, an app, or connected phone equipment.

If you are unsure which type you have, check the name of the service on a recent statement or inspect where the phone cord connects. Do not assume that a wall-jack phone uses a traditional line; some digital systems also feed existing wall jacks.

How do you block a phone number on a landline with a star code?

Some providers let customers block unwanted calls on landline service by entering a star code from the telephone keypad. The code, menu prompts, capacity, and availability depend on the provider, so use only a code shown in the provider’s official instructions.

1. Write down the unwanted number, or leave the most recent unwanted call in the caller list.

2. Check the provider’s official call-blocking instructions for the code assigned to selective call rejection or call blocking.

3. Pick up the receiver, confirm that there is a dial tone, and enter the verified code.

4. Follow the recorded prompts to turn on blocking and add a number. Some systems offer an option to add the most recent caller even when the caller’s number was not displayed.

5. Listen for confirmation before hanging up.

If the code produces a busy signal, an error message, or no menu, do not keep trying unrelated codes. The feature may use a different process or may not be available on that service.

How do you block a number through your landline provider account?

To block a phone number on landline service through an online account, open the company’s official website and sign in with the account that manages the home phone line. Have the unwanted number ready exactly as it appears in caller ID.

1. Select the home phone or landline service rather than a mobile line or internet service.

2. Look for a section named Call Settings, Call Blocking, Privacy, Security, or Spam Controls.

3. Choose the control for blocking individual numbers.

4. Enter the full number, review it for mistakes, and save or apply the change.

5. Return to the blocked-number list and confirm that the entry appears.

If no blocking control appears, confirm that you selected the correct line and account role. The primary account holder may have settings that another user cannot see. Provider tools also vary, so the absence of an online control does not prove that the handset cannot block calls.

How do you block a number on a landline phone itself?

A compatible handset or answering system may store blocked callers in its own memory. This method works at the phone equipment level and does not require every landline provider to support the same feature.

1. Open the caller list and highlight the unwanted call. If the number is saved in the phonebook, open that entry instead.

2. Open Options, Menu, or Call Settings.

3. Select an item labeled Block, Block Caller, Reject, or Add to Blocked List.

4. Confirm the number and save the entry.

5. Check the handset’s blocked-call settings to make sure blocking is enabled.

Button names differ by phone model. If no blocking option appears, check the handset guide for “call block” or “blocked numbers.” A phone without that feature cannot gain it through an ordinary caller-list menu.

How do you block anonymous or unidentified calls on a landline?

Blocking one known number is different from rejecting anonymous calls. A known-number block targets the digits you entered, while anonymous-call rejection targets calls whose caller ID is marked private, withheld, unavailable, or unidentified.

Check the provider account or handset settings for controls labeled Anonymous Call Rejection, Private Call Blocking, or Unknown Call Blocking. Read the description before enabling one: a broad setting may also reject legitimate callers who intentionally hide their number or whose caller ID is unavailable.

Unknown-call controls may not stop spoofed calls. Spoofing means a caller disguises the number shown on caller ID. If unwanted calls arrive from changing displayed numbers, blocking each number may have limited effect.

How can you confirm that a landline number is blocked?

Confirm a block by reviewing the same blocked-number list used to create it. Testing from the blocked line can help, but the result may vary because providers and handsets handle rejected calls differently.

1. Open the provider’s blocking controls or the handset’s blocked-number menu.

2. Check every digit and remove an incorrect entry before adding the correct number.

3. Save the setting again if the page or phone shows an unsaved change.

4. If appropriate, ask the owner of the blocked number to place a test call.

5. If calls continue, compare the incoming caller ID with the saved entry. A different or spoofed number will not match the original block.

When learning how to block calls on a landline, also check where the block was created. A handset block may affect only that base unit, while provider-level controls may operate differently. Restart digital phone equipment only if the provider’s instructions call for it. If the correct number remains listed but calls continue, use the verified support option supplied with your account and describe the service type, blocking method, and displayed caller ID.