10 Best Call Blocker For Landline Phone 2026 in the United States

The Panasonic KX-TGF852B is a versatile call-blocker for landline phones that combines a corded base unit with two cordless handsets, expandable to six. Its advanced call-blocking capability stands out, automatically pre-blocking robocalls and allowing you to block telemarketers easily. With a capacity to block up to 1,000 numbers using a one-touch button, it excels in blocking capacity.

The system is user-friendly, featuring a large, tiltable 3.4-inch LCD display for clear caller information and one-touch dial buttons for frequently called numbers. Additionally, the Talking Caller ID feature, available in English and Spanish, announces callers, which is convenient for hands-free usage. The two-way recording function ensures you never miss important call details, making it suitable for business use.

The large red call block button is a practical addition for quickly stopping nuisance calls. However, the device relies on four AAA batteries, which may require frequent replacements depending on usage. While the system's manual keypad is straightforward, some users may prefer a more modern interface. The expandable handset feature is beneficial for larger homes or offices, but the need to purchase additional handsets separately could be seen as a drawback. This Panasonic model is well-suited for those needing robust call-blocking features, ease of use, and the flexibility of both corded and cordless options.

The AT&T BL3107-5 is a versatile 5-handset cordless home phone system that excels in call blocking and landline functionality. Its Smart Call Blocker feature is highly effective, allowing you to store up to 1,000 numbers in the block list and instantly blacklist unwanted callers using a dedicated key, which is excellent for reducing robocalls and spam calls. The system is user-friendly with a large, backlit screen and a lighted keypad with big buttons, making it easy to use even in low-light conditions.

The device supports Bluetooth connectivity, letting you pair up to two cell phones or a cell phone and a headset, and even access voice assistants directly from the handsets. This can be particularly beneficial if your cell phone is in another room, ensuring you never miss important calls or messages. The digital answering system with a voice guide offers 22 minutes of recording time, which provides ample space for incoming messages and memos. Setting up and managing this feature is straightforward, thanks to the voice-guided setup. Additionally, you can download your cell phone contacts to the BL3107-5, centralizing all your contact information in one place.

However, there are some drawbacks. The system operates on a single line, which might be limiting for users needing multiple lines. It also requires five specific batteries (included), which could be an inconvenience if replacements are needed quickly. Despite these minor issues, the AT&T BL3107-5 is well-suited for those looking for robust call blocking and home phone functionality, especially for users who need to integrate cell phone connectivity seamlessly.

The AT&T 5-Handset DECT 6.0 Cordless Home and Business Phone with Answering Machine (model DLP73590) offers extensive features suitable for both home and business use. It boasts a 5-inch color display that enhances ease of use by providing clear menu navigation and assigning one-touch shortcuts for essential functions like contacts and call history. This makes managing your communication straightforward and efficient. Additionally, the phone supports conference calls and intercom functionality between handsets and the base unit, making it ideal for busy environments that need seamless internal communication.

The device excels in call blocking capabilities, with a smart call blocker that automatically prevents robocalls from ringing through and the ability to blacklist up to 1,000 numbers with one touch. For added convenience, it integrates with your mobile phone via Bluetooth, allowing you to make and receive calls from your cellular plan through the landline handsets. The built-in digital answering system can record up to 40 minutes of messages, ensuring you never miss an important call. Range and clarity are top-notch thanks to DECT 6.0 technology, which improves coverage and reduces noise.

However, there are a few drawbacks. The system requires five AAA batteries, which may be an inconvenience for some users. The weight (4.28 pounds) and dimensions (9.49 x 6.14 x 7.28 inches) might also be a bit bulky for some setups. Nevertheless, its extensive feature set, including call blocking, easy usability features, and excellent connectivity, makes it a strong contender for anyone needing an effective call-blocking landline phone system.