Reverse Phone Lookup Guam

Reverse Phone Lookup by Guam Area Code

All Guam phone numbers consist of three parts: the three-digit Area Code, the three-digit Prefix Code (also known as the exchange or central office code), and the final four-digit line number. While the area code narrows down the location to a large region, the prefix code can often specify the original city or town where the number was registered.

Here's a complete list of Guam area codes:

For latest Guam phone numbering regulations, contact at the via or .

Guam Phone Numbers

Guam has approximately 185,000+ active mobile phone numbers. Landline and VoIP subscription numbers are unavailable. Cell phones make up the majority with 185,000 users.

This means that when you search a Guam phone number, it's most likely a cell phone.

Guam Voice Subscriptions (in thousands):

Service Type	June 2023	Dec 2023	June 2024
Mobile telephony	169	179	185
Local exchange telephone service	*	*	*
VoIP subscriptions	*	*	*

Source: FCC Voice Telephone Services Report

Top 5 US Cell Phone Companies

Most phone numbers are cell phones, and most cell phone numbers come from the top three United States wireless companies. Here are the top five US Cell Phone Companies in Q1 2025:

• Verizon - 146 million customers
• T-Mobile US - 131 million customers
• AT&T Mobility - 118 million customers
• Boost Mobile - 7 million customers
• U.S. Cellular - 4.4 million customers

Verify Phone Number Owner to avoid Scam Calls Guam Fraud Statistics

According to the Federal Trade Commission's 2024 data, phone calls and text messages make up 35% of all fraud contact methods nationwide:

• Phone calls: 19% of fraud reports (284,659 reports, $948M in losses)
• Text messages: 16% of fraud reports (246,784 reports, $470M in losses)

More than 1 in 3 fraud attempts happen through phone communication. Phone call fraud costs victims a median of $1,500 per case. Text message fraud costs a median of $1,000 per victim.

In 2024, Guam residents reported fraud cases resulting in total losses of , with a median loss of $ per victim. With phone-based fraud representing such a significant portion of these cases, phone owner verification has become a critical consumer protection tool.

When you receive calls from unknown numbers, take a moment to research the caller's identity. Reverse phone lookup services allow you to search a phone number to find information about who's calling—including whether the number has been reported for fraudulent activity.

Received fraudulent calls or fallen victim to phone fraud? Report it immediately. Each report helps authorities identify fraud patterns and protect other consumers from similar scams.

Additional Contact:
Guam Attorney General