Have you noticed a drop in answered calls from your customers lately? Your business number could very well be flagged as SPAM by network carriers and SPAM filtering third-party services and apps. Numbers that are flagged may even be displayed as “SPAM LIKELY”, “SPAM RISK” or “SCAM LIKELY” to your customers before they answer your call.

Why are my numbers being flagged as SPAM?

Every time your business makes a call to a potential or existing customer, the customer’s phone carrier matches your number against a list of numbers they’ve determined to be SPAM numbers. Numbers are added to this list based on their history, customer complaints and other analytics from scam ID technologies.

Some common reasons that numbers are flagged as SPAM include:

1. A high volume of outbound calls per day by a single number

Carrier’s analytics software can’t always detect whether a number is legitimate or from a robot. The higher the volume of calls from a number, the more suspicious it appears. Generally, more than 100 calls per day from a single number will be viewed as suspicious.

2. Somone reported a number to its carrier as SPAM

Unfortunately, more and more numbers are being reported as SPAM due to increases in spoofing. Spoofing is when a caller disguises their caller ID as coming from a local number or company that the recipient may trust. Robocallers may be masking their identity under the name of your business, lowering the chance of customers accepting your calls.

If your numbers’ outbound caller IDs have not been correctly set, they could likely be flagged automatically as spam by carriers’ SPAM detection algorithms.

Carriers also have various features and apps that are automatically enabled on mobile devices to display incoming call numbers that have been previously reported for SPAM as “Scam Likely”.

In some cases, customers may also opt-in to extra protective features that prevent calls flagged as “Scam Likely” from even reaching their phone.

Unfortunately, these lists of “SPAM” numbers reported are Carrier-specific. There is no central body or service that oversees number designation, which can make getting a number unflagged not such a straightforward process.

How to keep your numbers from being labeled as SPAM

The best way to keep your numbers from being incorrectly marked as SPAM is by being proactive. Businesses can get their number whitelisted among the top U.S carriers (AT&T, T-Mobile and Verizon) by registering their numbers with the 

. By registering, businesses are often able to avoid having their numbers flagged as SPAM for the three reasons mentioned above.

 is also another great way to make sure your numbers aren’t incorrectly labeled as SPAM and boost your answer rate. Verified calling gives your customers the confidence to know it’s really you on the other end by including built-in branding, a verification badge and your reason for calling.

How to get your SPAM labeled numbers unflagged

As mentioned above, each Carrier and third-party SPAM blocking service/app has its own list of numbers marked as SPAM. Use the following links to register your numbers with these carriers and services and appeal to have incorrectly flagged or blocked numbers unflagged or unblocked.

https://hiyahelp.zendesk.com/hc/en-us/requests/new?ticket_form_id=824667


Robokiller is used by millions to block spam callers. Once a number is reported by a single user, it will be automatically be blocked from all other users. Email their support to unflag your number. support@robokiller.com.


Nomorobo is another popular SPAM blocking app and winner of the FTC robocall challenge. To contact them, email reports@nomorobo.com.


Numbers on Icehook’s list are flagged as SPAM if they reach a risk level of 81-100.



Numbers on Truespam’s list are flagged as SPAM if they reach a score of over 60.


Build trust with your customers and boost your answer rate with verified calling. Our experts are ready to assist you with registration or any questions you may have.

Why your number shows up as SPAM (and how to fix it)

A rate limit is a cap on the number of message segments a person or business can send per second (MPS). Rate limits are set by messaging carriers like T-Mobile and AT&T to maintain a safe and efficient messaging ecosystem for businesses and consumers alike. Without rate limits, carrier networks would become quickly congested and unreliable.

While rate limits may seem like an obstacle to your message sending at first, they play a vital role in keeping the text-messaging ecosystem safe by reducing instances of spam messaging and snowshoeing. It’s thanks in part to rate limits that text messaging is considered the most widely available and reliable communication channel.

To determine what rate limits apply to your messaging, it’s important to understand what your messaging use case is. While 

 (10-digit long code application to person) rate limits can vary greatly. The default rate limit for 10DLC is 1 MPS but can increase up to 1000 MPS depending on your messaging use case.

Not sure what your messaging use case is? 

 to learn everything you need to know and get started on registering your 10DLC messaging campaigns.

If you’re new to 10DLC messaging, it’s important to understand the campaign registry, a registration process for all message senders that helps protect the messaging ecosystem and lets senders benefit from higher rate limits. If you’re unfamiliar with campaign registration, 

check out our previous blog on it to gain a better understanding

While some messaging providers leave it to their customers to determine what rate limits they require, Tychron takes on the heavy lifting of setting rate limits automatically in accordance with your messaging campaigns. This ensures that our message senders are able to benefit from the fastest message sending possible while staying compliant with campaign registry regulations. Tychron’s automatic rate limits also lessen the burden on your programmers as no extra configuration is required to get the most out of your messaging.

For inbound messaging, customers receiving messages through Tychron are not subject to any rate limits. However, these messages are still subject to carrier rate limits and the rate limits of whoever is sending the messages.

Get the maximum rate limits on all your messaging while saving an average of 35% on your messaging by switching to Tychron as your messaging service provider. Message faster, save more, no extra work required.

Simplifying Messaging: Rate Limits

As businesses and consumers continue to shift towards a remote-first mentality, the need for over-the-phone service continues to grow. While the use of communication products and conferencing software like Google Meet and Zoom has increased significantly over the past few years, voice calling is still the preferred channel among consumers when it comes to voice communication.



However, while business and consumer use of voice calling continues to grow, cases of robocalls are also on the rise. In 2021 alone, more than 50 billion robocalls were made to U.S phones.

 Overall, more than 5.7 million people filed fraud reports, totaling a yearly loss of $5.8 billion dollars among consumers and businesses.



As instances of fraud increase, the suspicion consumers have in who is really on the other end of the line is growing. In fact, only 21% of consumers are likely to pick the phone for an unidentified caller vs 68% for an identified caller!

 With 79% of calls going unanswered, time and money are being thrown out the window by businesses that do not use enhanced identification for their voice calling.

For businesses that want to engage more with their customers over the phone and stop wasting resources, Tychron includes 

, with verified calling businesses can easily display their branding, reasons for calling and a verification badge when making a call. By including branding and a verification badge, businesses are able to extinguish the suspicion customers have of who is on the other end for every call.

Verified calling is currently available for Android devices in 9 countries: the United States, Canada, Mexico, Brazil, the United Kingdom, Spain, France, India and the Philippines, with more to come.

Boost your answer rates by building trust

In a world where the average consumer faces up to 44 spam calls per month,

 verified calling helps businesses to stand out from the scammers and give their customers the confidence to pick up the phone. Without branding, your outgoing calls are likely to go unanswered or worse, be blocked by customers who suspect spam. A picture is worth a thousand words, and creating a visual connection with your customers before they answer the call is the fastest way to gain their trust. According to market research by Google, businesses are experiencing 3x higher answer rates by using verified calling.

Bring your customers up to speed with your reason for calling

By displaying their reason for calling, businesses are able to shorten the time needed to communicate critical information to their customers with verified calling. It’s a quick way to save time, provide your customers with a better service experience and boost the reputation of your brand.

Deliver better conversations with verified calling

Ready to make your answer rate skyrocket and deliver more? Tychron’s experts are here to help you get up and running quickly with verified calling and include it for free with our voice services. 

Build trust with your customers and boost your answer rate with verified calling. Our experts are ready to assist you with registration or any questions you may have. 

An end to fraudulent callers

Everything you need to avoid scammers

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Customer notifications

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Dig Deeper

Why your number shows up as SPAM (and how to fix it)

Simplifying Messaging: Rate Limits

How Verified Calling Can Make Your Answer Rate Skyrocket

Get CNAM w/ Robocall Mitigation