Identify unknown Connecticut phone numbers.
Use ThisNumber's reverse phone lookup tool to find out who's calling you.
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ThisNumber has over 28 million name and address records for about 23 million phone numbers, making it one of the best reverse phone lookup services for Connecticut residents. Stop wondering who called you and start using this free lookup tool to identify the unknown callers, verify Connecticut businesses, or research potential scam calls.
To identify the location of an Connecticut phone number, you need to understand the North American Numbering Plan (NANP) structure that all Alabama numbers follow: +1 NPA NXX XXXX.
The area code (NPA) is your key to determining location. By matching the three-digit area code to Connecticut's regional assignments, you can identify which part of the state the phone number originates from. Each area code corresponds to specific cities and counties throughout Connecticut, making it possible to narrow down the caller's general location.
Here's a complete list of Connecticut area codes with major cities:
Area Codes | Cities |
---|---|
203/475 | Bridgeport, New Haven, Stamford |
860/959 | Hartford, New Britain, West Hartford |
For latest Connecticut phone numbering regulations, contact Quat Nguyen at the Connecticut DPUC via [email protected] or 860-827-2696.
Connecticut has approximately 5.5 million active phone numbers. Cell phones dominate with 4.3 million users, while traditional landlines are declining with about 212,000 connections statewide. Internet phone services account for roughly 991,000 numbers.
Consequently, tracing a Connecticut phone number is most likely to lead to a cell phone. The diminishing presence of landlines suggests that newer numbers may be more challenging to trace compared to older landline numbers, which often had more accessible public information.
Connecticut Voice Subscriptions (in thousands):
Service Type | June 2023 | Dec 2023 | June 2024 |
---|---|---|---|
Mobile telephony | 4,207 | 4,272 | 4,307 |
Local exchange telephone service | 282 | 232 | 212 |
VoIP subscriptions | 1,003 | 964 | 991 |
Total | 5,492 | 5,468 | 5,510 |
Source: FCC Voice Telephone Services Report
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:
Connecticut residents filed 23,048 unwanted call complaints in fiscal year 2024, ranking the state #17 nationally for complaints per 100K population, according to the latest National Do Not Call Registry Data Book. Connecticut has a high number of active registrations, with 3,405,203 numbers listed on the Do Not Call Registry, ranking the state #2 nationally for registrations per 100K population.
Key Facts for Connecticut Residents:
According to the Federal Trade Commission's 2024 data, phone calls and text messages make up 35% of all fraud contact methods nationwide:
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, Connecticut residents reported 43890 fraud cases resulting in total losses of $90.3M, with a median loss of $432 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:
Connecticut Attorney General
William Tong
(860) 808-5318
Yes, reverse phone lookups are generally legal in Connecticut, but your personal data is now protected under the Connecticut Data Privacy Act (CTDPA), which gives you significant rights to control how companies collect, use, and share your phone number and related personal information.
The CTDPA defines personal data as "any information that is linked or reasonably linkable to an identified or identifiable individual." This includes your phone number when combined with other identifying information. The law provides extra protection for "sensitive data," which includes precise geolocation data that could be obtained through your phone.
However, the law doesn't apply to all organizations. It covers businesses that conduct business in Connecticut or target Connecticut residents and either:
Connecticut residents have five key rights regarding their personal data, including phone numbers:
Timeline: Companies must respond to your requests within 45 days of receipt.
Cost: You can request information from a company free once every 12 months. Beyond that, they may charge an administrative fee.
Appeal Process: If a company denies your request, you have the right to appeal. The company has 60 days to respond to your appeal and must provide information on how to contact the Attorney General if they deny your appeal.
Universal Opt-Out: As of January 1, 2025, Connecticut residents can use opt-out preference signals (like Global Privacy Control) through privacy-protective browsers to automatically tell websites not to sell or use their data for targeted advertising.
Who Enforces the Law: The Connecticut Attorney General has exclusive enforcement authority under the CTDPA.
Private Lawsuits: No, the law does not provide a private right of action for consumers. Only the Attorney General can take enforcement action.
Penalties: Companies that violate the CTDPA face fines up to $5,000 per willful violation under the Connecticut Unfair Trade Practices Act. The Attorney General can also seek injunctive relief and restitution.
Cure Period: Until December 31, 2024, companies receive a 60-day notice to fix violations. Starting January 1, 2025, the Attorney General may take immediate enforcement action without offering a cure period.
While reverse phone lookups remain legal in Connecticut, the CTDPA gives you powerful tools to control your personal information. You can request deletion of your data, opt out of data sales and targeted advertising, and file complaints with the Attorney General if companies don't comply. The law is actively enforced, with the AG's office having issued over a dozen violation notices to companies since the law took effect in July 2023.
For more information about your rights under the Connecticut Data Privacy Act, visit the Connecticut Attorney General's office, the FTC's guide on data brokers, and the International Association of Privacy Professionals' state law comparison.