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📌 Finding Unregistered Numbers in a Project


When you have hundreds or even thousands of numbers in your project, it can be painstaking to try and find out which ones are registered and which are not. However, this process is essential to ensure your messages are not blocked for coming from unregistered numbers. This script makes it easy to compare all the numbers in your project with a CSV of registered numbers. If you don't have a CSV of your registered numbers, this snippet can help you accomplish that!

What do I need to run this code?

To quickly run this code, check out our recipe below and replace the variables with your own!

🦉 Open Recipe: How to Compare All Project Numbers with Registered Numbers

You will need your API credentials as well as a CSV of your registered numbers. You can find your API credentials in the API tab of your SignalWire Space!

How to Run Application

This application is very simple! We will first define our SpaceURL, projectID, authToken, and pathToCSV variables to be used throughout the code.

from import Client as signalwire_client
import csv

# define your variables here so they don't need to be hardcoded
SpaceURL = ''
projectID = ""
authToken = ""
PathToCSV = 'folder/FileName.csv'

We will use the authentication variables we just defined to instantiate the SignalWire Client and list all phone numbers in the project.

# authenticate client 
client = signalwire_client(projectID, authToken, signalwire_space_url=SpaceURL)

# List and print all numbers on account
incoming_phone_numbers = client.incoming_phone_numbers.list()
print("Total Numbers -- " + str(len(incoming_phone_numbers)))

We are going to have to keep track of both unregistered and registered numbers, so we will create two lists to store the data. Now that we have a results array, we will loop through the CSV using csv.reader and append each number. If a number is not already in E164 format, we will modify it before appending to results.

# Open CSV file with registered numbers
with open(PathToCSV, 'r', encoding='utf-8-sig') as csvfile:
reader = csv.reader(csvfile)
# Change to E164 format if it's not already in that format
for row in reader:
if "+" not in row[0]:
results.append("+" + row[0])

We have now arrived at the last step, I told you it was easy! All we have to do now is loop through the numbers on the project that we pulled from the API earlier and check each number to see if it exists in results. If it does, then it is already registered, and therefore needs no attention. If not, we will add the number to the unregistered list. Once we have finished, we will print all of the unregistered numbers. If they are toll-free, they are safe to ignore! Any local numbers with messaging destined to US numbers on this unregistered list should be added to a campaign to use them for messaging.

for record in incoming_phone_numbers:
if record.phone_number in results:
print('unregistered number --' + record.phone_number)


Sign Up Here

If you would like to test this example out, you can create a SignalWire account and space here.

Please feel free to reach out to us on our Community Slack or create a Support ticket if you need guidance!