If you use SMS one-time passwords (OTPs) to add a layer of risky IP address authentication to your Twilio application, it’s important to detect VoIP numbers before sending them. These numbers are often correlated with bots and can be a threat to your security.

Detecting VoIP Phone Numbers Before Sending OTP

You can easily use the Lookup API to detect fixed and non-fixed VoIP phone numbers. You can also combine it with the Verify API to filter out non-fixed numbers before sending an OTP.

Assessing Risky IP Addresses: Best Practices for Enhanced Cybersecurity and Fraud Prevention

Unlike landline or cell phone numbers, VoIP phone numbers are not assigned to physical locations but instead to people who are using them. This makes it difficult to trace a bad actor’s identity.

There are a few ways to identify the owner of a VoIP phone number, but the most popular is by using a CNAM (caller ID name) lookup. This identifier is connected to the caller ID and is much harder to fake than caller ID, making it an excellent tool for tracing VoIP numbers.

Reverse Phone Lookup Tools

Using a reverse phone lookup tool is the easiest and fastest way to find out who owns a VOIP number. They are free, easy to use and will give you the name and address most of the time. However, they aren’t always accurate and may not give you the information you need.

Using a phone carrier lookup helps you to identify the correct service provider and the location of a particular number. The carrier lookup can also help to prevent fraud and improve delivery of messages. It can reduce the number of undelivered messages and prevent chargebacks for fraudulent accounts.

Australian Mobile Carrier Lookup – Bulk SMS Service

IPQS offers a free phone carrier lookup tool. It can find cellular and landline numbers for any country. It can also perform VOIP searches. It can also look up the latest carrier of record for any phone number. It is easy to integrate this API into your software.

The phone carrier lookup allows you to target specific audiences and maximize your marketing campaign. It can also help to prevent fraudulent accounts from charging back your credit card. It can also help to increase the accuracy of your phone number database, which will increase the ROI of your messaging efforts.

IPQS connects directly to the telecom backbones of the major phone carriers. It can perform a phone carrier lookup by pinging a network of carriers in 150 countries.

Whether you are looking for the phone line type, time zone, or name of the person associated with a given number, the service provides it all. In addition, it costs only a few cents for each number.

When you send out SMS text messages, you need to ensure that you are sending them to valid phone numbers. The carrier lookup tool can verify the validity of a number before you send it to your customers.