Why is my outbound call showing up as spam?
Recently, many telephony providers - especially mobile providers - have become more aggressive in flagging outbound calls as spam. This can happen in a couple of different ways. Firstly, as you may have noticed on your own personal devices, it's now very easy for individuals to report calls from unknown numbers as spam to their providers. Enough of these reports from individuals can cause a number to be flagged as a spam number or a spam risk. Secondly, carriers may also flag numbers as spam via algorithm without any user interactions.
We confirm that the reputations of all numbers we provide are clear when the numbers are first provisioned. If a newly-provisioned number shows as spam on first use, please contact us to address the issue directly. However, if a number that was previously working fine was recently flagged as spam, that's outside of what we are currently able to assist with.
What can I do?
As a first step to get ahead of potential flagging issues, you can Register your numbers with providers so they know the numbers belong to a legitimate business. Here is a blog post on Why it's important to register your numbers with carriers.
You can also potentially update numbers that lead to blocked calls by signing up with Free Caller Registry. The free portal will send information to major carriers so they can update their databases and, hopefully, remove flags from your business numbers.
Also, major telecom providers have set up simple ways to dispute flags and blocks.