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Phone Numbers: (240) 899-XXXX

Recently Searched Numbers in the 240 Area Code

About the (240) 899 Prefix

The (240) 899 prefix serves Germantown, Maryland, United States. Phone numbers in this exchange follow the format (240) 899-XXXX. The primary carrier assigned to this prefix is OMNIPOINT COMM CAP.

(240) 899 Geographic Info

Primary City
Germantown
State
Maryland, United States
Primary Carrier
OMNIPOINT COMM CAP

Other Prefixes in the 240 Area Code

From Our Blog

The way we use phones has changed — but so have the risks. Here's something our research team thinks you should know:

In the Google Phone app on Android, blocking unknown numbers (Settings → Blocked Numbers → toggle on "Unknown") outright rejects calls that don't transmit a caller ID. It's more aggressive than iPhone's Silence Unknown Callers — blocked calls don't go to voicemail.

Read more: How to Stop Spam Calls on iPhone and Android (2026 Guide)

Frequently Asked Questions

What area code is (240) 899?

(240) 899 is a telephone prefix in the 240 area code, which serves Germantown, Maryland, United States.

Where is the (240) 899 prefix located?

Phone numbers with the (240) 899 prefix are located in Germantown, Maryland, United States. The primary carrier for this prefix is OMNIPOINT COMM CAP.

What carrier uses the (240) 899 prefix?

The primary carrier assigned to the (240) 899 prefix is OMNIPOINT COMM CAP. However, numbers may be ported to other carriers over time.

How do I look up a phone number with the (240) 899 prefix?

Enter the full 10-digit number (e.g. (240) 899-XXXX) into ClarityCheck's reverse phone lookup to instantly see the owner's name, address, social profiles, and more.