Received a text message from a strange 5 or 6-digit number and wondering, “Who texted me?” You’re not alone. These numbers are known as SMS short codes, used by businesses for everything from bank alerts to marketing promotions. Identifying the sender is not just about curiosity—it’s a crucial step for your privacy and security. Whether you’re trying to verify an automated notification or block a potential scam, our 2026 updated guide provides the most reliable way to perform a free SMS short code lookup in the United States.
Important 2026 Update: As of January 1, 2026, the official U.S. Short Code Registry has fully transitioned to a new, enhanced management platform designed to provide better transparency for consumers. This transition ensures that all dedicated short codes are properly vetted, making it easier than ever to track down the legitimate business behind any message. If you are using older lookup tools, they may no longer be accurate, which is why we have verified the latest registry protocols to help you stay informed.
Common US Short Codes: Quick Identification Table
Before accessing the full database, check the table below. We have compiled a list of the most frequently searched 5 and 6-digit numbers used by major banks, retailers, and tech giants in the United States. Identifying these common codes can save you time and provide immediate peace of mind regarding the sender’s legitimacy.
| Short Code | Company / Service | Primary Purpose |
| 22444 | Two-Factor Authentication (2FA) & Security Alerts | |
| 262966 | Amazon | Order Tracking, OTP, and Delivery Updates |
| 32665 | Account Notifications and Login Approvals | |
| 73981 | Chase Bank | Fraud Alerts and Account Balance Notifications |
| 266344 | Bank of America | Transaction Alerts and Security Codes |
| 93557 | Wells Fargo | Banking Alerts and Direct Deposit Notifications |
| 28107 | Verizon | Billing Reminders and Account Support |
| 6245 | Microsoft | Outlook and Office 365 Verification Codes |
| 732873 | Starbucks | Rewards Program Updates and Promotional Offers |
| 466453 | Google (Search) | SMS Search Results and Information Services |
Why You Should Trust This Data
While many websites offer outdated lists, our directory is synchronized with the latest industry standards. It is important to note that as of January 1, 2026, the official management of these codes has transitioned to a new registry system to improve consumer transparency and security. This means that the dedicated short codes listed above are strictly regulated by the CTIA to ensure they are used for legitimate Application-to-Person (A2P) messaging.
If your code is not listed in the table above, don’t worry. The next section will guide you through the official tools you can use to find any registered owner in seconds.
How to Use the Official U.S. Short Code Registry (2026 Update)
If the number you are looking for was not in the table above, the most definitive way to identify the sender is through the official national database. As of January 1, 2026, the Official U.S. Short Code Registry has completed its transition to an upgraded platform managed by iconectiv under the authority of the CTIA. This new system is designed to provide greater transparency and security for consumers interacting with mobile messaging.
Step-by-Step Lookup Guide:
- Access the Registry:Visit the primary directory at com. Starting this year, you will notice an enhanced interface following the 2026 platform transition.
- Use the “Find a Short Code” Tool:Locate the search bar on the homepage. This tool accesses the central repository of all leased 5 and 6-digit numbers in the United States.
- Enter the Code:Type the specific short code you received a message from and click search.
- Review the Results:If the code is registered, the system will display the Company Name (the owner) and the Program Name (the specific campaign, such as “Bank Alerts” or “Delivery Notifications”).
Why the 2026 Transition Matters
The recent transition to the new management platform on January 1, 2026, was implemented to ensure that every short code is properly vetted and compliant with industry standards. This makes it much harder for bad actors to use these numbers for spam, as the registry now offers improved visibility and accountability for every messaging program.
Expert Tip: If a search returns “Available,” it means the code is not currently leased by a business. If you are still receiving messages from an unlisted code, exercise caution as it may be an unauthorized sender.
Alternative & Fast Methods for Short Code Identification
While the official registry provides the most detailed information, there are several “insider” methods you can use to identify a sender directly from your mobile device. These methods are mandated by US consumer protection laws to ensure that every business-to-consumer (B2C) text is transparent and safe.
1. The “HELP” Keyword Method (The Fastest Way)
The most effective trick to identify a legitimate short code is to simply reply with the word “HELP” to the message you received. Under CTIA guidelines, all compliant US short code programs are required to send an automated response that includes:
- The Company Name:The legal owner of the code.
- Contact Information:A phone number or email for customer support.
- Standard Rates:A disclosure about any messaging fees.
If you do not receive a compliant “HELP” response, this is a major red flag that the sender may be an unauthorized entity or a potential scammer.
2. The “STOP” Command for Instant Privacy
If you have successfully identified the sender but no longer wish to receive their texts, reply with “STOP”. This is the universal opt-out command in the US. Once sent, the company is legally obligated to remove your number from their campaign and send a final confirmation text.
3. Reporting Spam to 7726
If the lookup returns no results and the message looks like a scam, you should report it to your mobile carrier by forwarding the text to 7726 (which spells SPAM on most keypads). This service works with all major carriers, including Verizon, AT&T, and T-Mobile, allowing them to investigate and block malicious traffic on their networks.
“Are you a T-Mobile user struggling with persistent spam or short code issues? To resolve these concerns quickly without waiting on hold, we recommend using their real-time support. Check out our expert guide on how to access T-Mobile Live Chat for immediate assistance from a live representative.”
4. Simple Google Search (The “Who Texted Me” Technique)
As a quick backup, searching for the number followed by “short code” (e.g., “short code 12345”) can often reveal community-driven insights from other users who have reported the same number on consumer protection forums.
Conclusion: Stay Informed and Secure in 2026
Identifying the owner of a 5 or 6-digit number is the first line of defense against unwanted messages and potential mobile fraud. While the official U.S. Short Code Directory remains the most authoritative source for a free SMS short code lookup, utilizing quick methods like texting “HELP” can provide immediate answers.
As the industry continues to evolve following the major transition on January 1, 2026, staying updated with the latest registry protocols ensures you are interacting with verified, compliant businesses. Always remember to report suspicious activity to 7726 and never click on links from unidentified senders.
Frequently Asked Questions (FAQ)
1. Is there a truly free SMS short code lookup tool?
Yes. The official registry managed by the CTIA and iconectiv allows you to perform a short code owner lookup for free. You can search any 5 or 6-digit number to see the registered company name and its intended use.
2. How do I find out who a short code belongs to?
You can find the owner by visiting the official directory at usshortcodes.com or by texting the word “HELP” to the short code in question. Legitimate companies are required by law to provide their identity and contact details in response to a “HELP” request.
3. What changed with the U.S. Short Code Registry in 2026?
On January 1, 2026, the registry fully transitioned to a new management platform. This update was designed to improve transparency, enhance security, and ensure that all messaging programs meet strict compliance standards for consumer protection.
4. Can I block a short code from texting me?
Absolutely. To stop receiving messages from any legitimate short code, reply with the word “STOP”. The sender is legally required to opt you out of their campaign and send a final confirmation message.
5. Why is a short code not appearing in the directory?
If a code is not listed, it may be a very new registration that hasn’t updated in the public database yet, or it could be an unauthorized sender. If you receive a suspicious message from an unlisted code, forward it to 7726 to report it as spam to your carrier.
