Area Code 713: Houston, Texas

Area Code Overview

Area code 713 is one of Texas's original 1947 area codes and today covers the core of the City of Houston — roughly the area within or near Beltway 8 (the Sam Houston Tollway), including downtown Houston, Midtown, Montrose, Memorial, and numerous inner-loop neighborhoods. As Houston grew into the fourth-largest city in the United States, overlays 281 (1996), 832 (1999), and 346 (2014) were added to serve the broader metro area.

Houston is the energy capital of the world. It is home to more than 40% of the nation's oil and gas processing capacity and hosts thousands of energy sector companies including ExxonMobil, Chevron, Shell, ConocoPhillips, and Baker Hughes, along with the Texas Medical Center (the largest medical complex in the world), the Port of Houston, and NASA's Johnson Space Center. This unique combination — energy industry, major medical center, international port, and space program — creates a distinct scam environment tied to these industries.

Houston is also the most racially and ethnically diverse major city in the United States. A large Hispanic population (roughly 45% of the city), plus significant Vietnamese, Indian, Nigerian, and other immigrant communities, creates a multilingual, multidemographic scam target profile.

Current Scam Patterns

Energy Industry Impersonation
Houston's energy sector identity is actively exploited. Scam texts impersonate CenterPoint Energy (Houston's primary electric utility), Reliant Energy, NRG Energy, or fictional "oil & gas investment opportunities." CenterPoint impersonation texts are particularly common — threatening disconnection unless immediate payment is made via a link or gift card. CenterPoint will not demand payment via text.

Texas Medical Center Scams
The Texas Medical Center's massive footprint — 60+ institutions, 160,000 employees — creates impersonation opportunities. Texts impersonating UTHealth, Memorial Hermann, Houston Methodist, or "health insurance administrators" request insurance information, offer free screenings, or threaten loss of health benefits.

Port of Houston and Shipping Scams
Houston's port generates substantial package and freight activity. Scam delivery notification texts impersonating USPS, FedEx, or customs authorities are prevalent — claiming packages are held for customs fees or require address confirmation.

Multilingual and Hispanic-Targeted Scams
Houston's large Spanish-speaking population is a documented target for Spanish-language scam texts. These impersonate the IRS ("El IRS"), Texas Health and Human Services (benefits programs), or utility companies. Vietnamese-language scams targeting Houston's large Vietnamese community are also reported.

Home Services and Contractor Fraud
Houston's vulnerability to flooding (Hurricane Harvey's aftermath increased contractor demand dramatically) created a persistent home services scam ecosystem. Texts offer HVAC repair, foundation work, flood damage remediation, or roof inspections at below-market rates — collecting deposits and not delivering services.

Lottery and Sweepstakes Fraud
Texas Lottery impersonation and sweepstakes prize notification texts are common. Messages claim winners and direct recipients to pay processing fees to claim prizes.

Carrier Landscape

AT&T, T-Mobile, and Verizon all have major presence in Houston. US Cellular has limited presence in the Houston market. The Houston energy sector and medical center drive significant enterprise wireless and VoIP adoption — large companies maintain extensive corporate phone systems, many VoIP-based.

The 713 number mix:
- Wireless: The majority of active 713 numbers are mobile
- VoIP: Elevated, particularly in the energy and healthcare sectors; many legitimate 713 business lines are VoIP
- Landline: Declining; still present among established businesses and older residential accounts

Houston's international character also means a higher proportion of numbers ported from international carriers or assigned through MVNOs serving immigrant communities.

VoIP and Spoofing Risk

Risk Level: HIGH

713 is a sought-after number prefix in Houston — it carries core-city credibility in a metro where the full geographic footprint is divided among multiple area codes. VoIP acquisition of 713 numbers is straightforward and inexpensive. Energy industry impersonation scams specifically favor 713 numbers because CenterPoint Energy, the target of most impersonation texts, is a 713 company.

Large-scale robocall and spam text campaigns targeting Texas and Houston specifically have been documented using 713 VoIP numbers as sender IDs.

What To Do If You Receive a Text From a 713 Number

Step 1: CenterPoint Energy and utility texts. CenterPoint does not demand immediate payment via text. If a 713 text threatens disconnection, log in to your CenterPoint account directly or call 713-207-2222 (the number on your bill). Never pay through a link in a text.

Step 2: Look up the number. Search at Who Sent That Text Message to check for prior reports, particularly for energy, medical, and delivery scams.

Step 3: Verify medical texts. Texts claiming to be from hospitals or insurance administrators should be verified by calling the institution directly using numbers from your insurance card or the facility's official website.

Step 4: Home contractor offers. Unsolicited texts offering home repair services — especially after a major weather event — should be treated with caution. Request written estimates in person and verify contractor licensing with the Texas Department of Licensing and Regulation.

Step 5: Report it. Forward to 7726 (SPAM). File with the FTC at reportfraud.ftc.gov. Texas-specific fraud: Texas Attorney General at texasattorneygeneral.gov.

When to block: Energy disconnection threats, fake prize notifications, unsolicited contractor texts.

When to verify: If a text references a real utility account or delivery, verify through official channels.

Frequently Asked Questions

What city is area code 713?
Area code 713 covers the core of the City of Houston, Texas — including downtown, Midtown, Montrose, Memorial, and inner-loop neighborhoods. The broader Houston metro uses 281, 832, and 346 as well. 713 is Houston's original and most recognized area code.

Is CenterPoint Energy sending me texts from 713 numbers?
CenterPoint Energy does send some text alerts to customers who have opted in to account notifications — but these will not demand immediate payment via a link or threaten same-day disconnection. If a 713 text claims to be from CenterPoint and threatens disconnection, it is almost certainly fraudulent. Call CenterPoint at the number on your bill to check your account status.

Why do I get so many scam texts about oil and gas investments from 713 numbers?
Houston's identity as the world's energy capital makes 713 a natural choice for investment scammers. Texts offering shares in oil wells, royalty interests, or energy company opportunities from unknown 713 numbers are a documented scam category. Legitimate oil and gas investments are not offered via cold text.

Is 713 a scam area code?
No — 713 is the legitimate Houston area code used by millions of residents and energy, medical, and business organizations. It is frequently used or spoofed by scammers because Houston's industries lend credibility. An unknown 713 text deserves the same scrutiny as any unknown sender.