Validate phone numbers, ensure compliance, and connect with the right people, all through a single, powerful lookup service.


Signalmash Query is a comprehensive lookup service that provides instant insights into any given phone number. With a single API call or portal lookup, you can retrieve:
Use Signalmash Query to reduce misdials, improve customer matching, and ensure every call is properly routed and compliant.
Visit portal.signalmash.com and create your account or speak with our team about setting up Query access.
Pick the plan that suits your usage needs—whether you need occasional lookups or high-volume, real-time queries.
Fill out a brief Know Your Customer (KYC) form to keep your account in line with telecom regulations.
Once approved, use our APIs or web portal to perform lookups and retrieve detailed data on any phone number instantly.
At Signalmash, we combine telecom expertise with modern technology to deliver reliable, transparent, and scalable solutions.
Signalmash Query takes the guesswork out of outbound calling and compliance, helping you connect with the right people in a way that’s both efficient and trusted.

Input the phone number you want to look up via our web portal or integrate our robust APIs into your existing platform.
Instantly see CNAM (subscriber info), carrier details, line type, and DNC status all presented in a concise, actionable format.
Use these insights to route calls, personalize customer interactions, and maintain compliance saving time and resources.
Phone number intelligence (also called number lookup, phone intelligence or line-type lookup) is a real-time query against carrier and registry databases that returns what is known about a telephone number before you call or text it. Signalmash Query returns four fields for US and Canadian numbers, each answering a different operational question.
Before a 10DLC or short code campaign. Consumer lists collected over years are typically 15 to 30 percent landline or disconnected. Every SMS to a landline is billed and never delivered, and a high failure rate on a new 10DLC campaign looks like spam to carrier filters. A line-type pass over the list before the first send removes both problems and pays for itself on the first campaign of any size.
At sign-up and checkout. A number that is VoIP, was ported in the last few days, or whose CNAM does not resemble the name on the form is not proof of fraud, but it is the cheapest risk signal you can add to an OTP flow: step up to a voice OTP or a manual review for the small share of sign-ups that trip the rules, and leave everyone else alone.
In the contact center. CNAM and carrier data on an inbound call let the agent see who is calling and confirm the caller's carrier matches the account on file, which shortens verification and catches social-engineering attempts that use a spoofed display number.
Before an outbound voice campaign. Federal DNC status plus line type tells the dialler which numbers may be called with an automated system at all, and which need a manual dial or should be skipped, before the campaign starts rather than after the complaint arrives.
Signalmash Query covers the first three methods from one API call or a portal upload, with results returned in real time for most numbers, and runs on the same account as your SMS API, voice and Branded Caller ID. Terms used above are defined in the telecom glossary.
A real-time lookup that returns what carrier databases know about a phone number: line type (mobile, landline, VoIP, toll-free), the current carrier after porting, the registered caller name (CNAM) and, in the US, whether the number is on the federal Do Not Call list. It is used to clean lists, choose routes, verify identities and stay compliant before a message or call is sent.
Yes. Line type is derived from the carrier and number-block records, which identify wireless carriers, wireline carriers and VoIP providers. Numbers behind VoIP apps and virtual-number services are classified as VoIP, which is why many sign-up flows treat them as higher risk and ask for a second verification step.
No. The National Do Not Call Registry governs telemarketing calls and texts to listed numbers, but the TCPA separately requires prior express written consent for marketing messages sent with an automated system, honouring company-specific opt-outs, calling-hour limits and, for texts, the 10DLC registration carriers require. Treat the DNC scrub as one mandatory step in a documented consent process and keep the check date with each record.
Very accurate for US and Canadian numbers, because ports are recorded in the Number Portability Administration Center as they complete and lookups query that data rather than the original block owner. The exception is the first minutes after a port, and numbers outside the US and Canada, where data quality varies by country.
Signalmash prices lookups per query on its usage-based plans: carrier lookup (LRN, carrier name and line type), federal DNC lookup and inbound CNAM query are each $0.0015 per query on the Launch and Growth plans and $0.0013 on Scale (see the Identity section of the pricing page), so a one-off list clean and a per-sign-up check are billed the same way. Against it, a single undeliverable SMS costs a segment fee plus carrier pass-through, and a single fraudulent sign-up costs far more, which is why lookups are usually run on every record rather than a sample.
In most cases, queries are returned in real time—often within milliseconds—ensuring minimal delays in your workflow.
Absolutely. We offer a RESTful API and detailed documentation so you can seamlessly integrate lookups into your existing systems.
Yes, although data quality and available information may vary by region. Contact our team for specifics on international coverage.
We handle DNC checks on our end, but you’re responsible for respecting opt-outs and adhering to regulations. Our KYC process ensures you meet core telecom guidelines.
We source CNAM data from reputable carrier databases, but accuracy can vary based on how frequently carriers update their records.
Gain real-time insights into who you’re calling and ensure every campaign stays compliant. Sign up for Signalmash Query today or contact our team to learn more about our lookup solutions.