PHONE NUMBER LOOKUP
Increase security, reduce costs, and optimize data travel. There’s no point in sending messages to outdated numbers – check first and send with confidence.
Accurate billing and routing are critical for effective SMS and voice calls. Identify mobile number networks with Number Lookup, and be sure to get it right every time!
Using Sinch messaging services today? Great, we’re already routing numbers for you efficiently, so relax.
If you’re looking for excellent performance when it comes to availability, throughput, latency, redundancy, and resilience, we’ve got you covered. Our service is built on a true carrier-grade platform to ensure the very best performance.
Enhance your communication workflows, prevent fraud, and maintain compliance. The Number Lookup API checks against trusted, authorized data sources to provide accurate phone number intelligence.
Integrate seamlessly to access port-corrected carrier data, identify line types, detect risks like SIM swaps, and query the Reassigned Numbers Database (RND) for TCPA compliance.
The Number Lookup API provides real-time, accurate phone number intelligence. By identifying the line type (mobile, landline, VoIP) and the associated carrier, it allows you to optimize routing, reduce operational costs, and prevent fraud like SIM swaps. Note: If you already use Sinch messaging services, we handle basic routing lookups for you automatically.
Yes. For U.S. numbers, we offer access to the Reassigned Numbers Database (RND), which helps you determine if a phone number has been disconnected and reassigned to a new owner. This keeps your database clean, ensures you reach the right person, and helps maintain TCPA compliance.
The key purpose of the service is to provide accurate line-type to help customers optimize campaigns and prevent some types of fraud. To achieve this in North America the number database needs to be corrected for number porting. This is not required in any other country.
The API includes powerful security capabilities. SIM Swap detection (US/CA) flags recent SIM changes to prevent phone number takeovers and 2FA bypass. Furthermore, our Advanced VoIP detection leverages AI to analyze carriers and categorize the likelihood that a number belongs to a virtual phone provider, allowing you to proactively block bad actors and fake accounts.
Yes. To ensure compliance with trusted data sources, we require you to declare your use cases before using the API. Additionally, performing number lookups in Canada requires a CLNPC license (an application process we can guide you through), and SIM swap access requires specific carrier registration and approval.
Not really. Revealing a granular location without the end user’s consent poses privacy risks. In most cases, mobile operators protect their customers and block this information. Our API is built on authorized, compliant data sources designed for optimizing communication channels and fraud prevention, not physical tracking.
We leverage the same high-quality data that supports Sinch’s global Super Network. We have gone to great lengths to ensure redundancy and resiliency, utilizing multiple application nodes in each datacenter, high throughput capacity, and geographic redundancy to protect against regional outages.
No. HLR Lookups are a privileged service that can only be accessed by Telecommunication companies that are routing traffic. This service is still available, to some extent, from other suppliers (but Sinch cautions customers against using it since it is both unreliable and result in data privacy issues for your business)
Enrich your business – get started today!
