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Spam Detection on Outbound Calls

What to do if your number is being labeled as “Spam” when you make outbound calls

In an effort to protect consumers against abusive robocalls, phone carriers are increasingly implementing call blocking programs and Spam Likely Call IDs.

RingRx has observed that AT&T, Verizon and T-Mobile increasingly blocking calls and tagging calls as spam that they feel fit typical robocalling campaign characteristics such as high-volume, short-duration calls originating from a single number.

Unfortunately there is nothing within RingRx’s platform that can stop another phone company from labeling calls from your number as Spam.


There are many, many legitimate use cases for high-volume, short-duration calls including school closing notifications, weather alerts, and patient reminders. These are entirely valid and legitimate use cases where recipients want to receive these calls and have opted-in to receive these calls; however, when viewed en-masse at the network level, they can look like illegal robocalling.

In order to ensure your outbound calls are not miscategorized as unwanted or fraudulent calls by the wireless carriers, we highly encourage you to proactively request whitelisting of legitimate outbound calling use cases from each of the major wireless carriers.

Below are websites where you can submit whitelisting requests:

Free Call Registry

Free Call Registry is a partnership of the three largest whitelisting companies in the US representing all major wireless and landline carriers.

If you choose to be extra certain, you can also register your number directly with the following carriers

AT&T/Wireless/Call Protect/HIYA

T-Mobile / FirstOrion / PrivacyStar

Please be advised these links are provided as a courtesy and are not affiliated with RingRx. They have changed their URL locations several times.