Carrier data
Line type and carrier
See whether a number is mobile, landline or VoIP, and which carrier it's on, with the carrier ID and name.
Free test drive
Test drive SubscriberVerify on your own phone list
Want to know how many numbers on your list are dead, landlines, or tied to a known TCPA litigator? Run them through SubscriberVerify and see. The trial includes 10,000 free lookups, and you don't need a credit card.
- Real-time carrier lookup: mobile, landline or VoIP, plus carrier name and ID
- SMS deliverability, including the landlines that can receive texts
- TCPA litigator screening with LitigatorVerify
- Do Not Call screening against the federal registry, plus state and complainer lists
- US and Canada numbers, by CSV upload or API
It may take up to 2 business days for our team to send your trial link.
Get your trial link
10,000 free lookups. No credit card required.
Inside every lookup
What you can test
Each lookup returns structured carrier, deliverability and compliance data. Here's what to look at during your trial.
Carrier data
Ported numbers
When someone switches carriers, SubscriberVerify shows the new carrier and the date the number was ported.
Included free
Deactivated and suspended numbers
Find numbers that were deactivated or suspended. These checks come at no extra cost.
Deliverability
SMS-enabled landlines
About 7% of landlines can send or receive texts. SubscriberVerify identifies them so you don't drop them by mistake.
Compliance
Litigator risk
Check numbers against a TCPA litigator database that's refreshed daily, and flag serial plaintiffs and repeat filers before you call or text.
Included free
DNC screening
See which numbers match the National Do Not Call Registry, plus state DNC and complainer lists where they apply. Federal DNC screening is included at no extra cost when it's enabled on your account. A match is registry data, not a ruling on whether you can call.
Location
Time zone and location
Get the number's time zone and geo data (country, state, city). Our location algorithm doesn't rely only on the area code. It can use other data, such as IP, and the response tells you which source it used.
Bulk
CSV bulk upload
Upload a whole list with whatever headers you have. No special formatting is needed, and you can get our output on its own or appended to your data.
Integration
REST API
Check numbers in real time at lead capture, in your dialer or in your CRM. The API docs include request fields, examples and the bulk API reference.
How the test drive works
1
Fill in the form
Just your name, email and company. Phone and Telegram/WhatsApp are optional.
2
Get your trial link
Our team emails you a personal trial link, usually within 2 business days.
3
Upload a list or call the API
Upload a CSV with whatever headers you have, since no special formatting is needed. Or connect through the API. Results show up in your dashboard.
Built with TCPA risk in mind
Carrier data tells you whether a number is reachable. LitigatorVerify helps you decide whether you should reach out at all. It screens against a continuously updated TCPA litigator database, which matters because TCPA violations can cost $500 to $1,500 each.
No tool can make a campaign compliant on its own. Consent, calling hours and your own policies still count. Screening before you dial or text, though, can cut down on avoidable exposure. If you're not sure where your program stands, talk to your legal counsel.
Learn more about LitigatorVerify · Bulk Phone Validator · API documentation
Test drive FAQ
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