A phone lookup is your first step to cleaner contact data. Know which numbers are valid, which are mobile, and — with DNC Lookup — which are on a DNC list, before your campaign spend touches a single bad record.
What a Marketing-Grade Phone Lookup Returns
PhoneValidator returns these data points per number — each one directly actionable for channel routing, segmentation, and compliance:
Valid / Invalid Status
Valid means the number is correctly formed and assigned to a carrier (active). Remove
Valid means the number is correctly formed and assigned to a carrier (active). Remove
Invalid numbers before any campaign — they are badly formed or not assigned. Line Type Classification
Mobile, Landline, VoIP or Toll-Free. Use this to route: mobile to SMS, landline to voice, VoIP for review.
Mobile, Landline, VoIP or Toll-Free. Use this to route: mobile to SMS, landline to voice, VoIP for review.
Current Carrier
The carrier that holds the number today, with network type and domain. Carrier data reflects number porting (LNP), so a number that moved networks shows its new carrier.
The carrier that holds the number today, with network type and domain. Carrier data reflects number porting (LNP), so a number that moved networks shows its new carrier.
DNC Status (DNC Lookup)
A separate check for US numbers: Federal (National) DNC list, TCPA Litigator list and 6 state DNC lists. Run it on its own or together with Phone + DNC Lookup.
A separate check for US numbers: Federal (National) DNC list, TCPA Litigator list and 6 state DNC lists. Run it on its own or together with Phone + DNC Lookup.
Geographic Data
City, State, ZIP, Country, Time Zone. Use for regional segmentation, call window scheduling, and geo-targeted offers.
City, State, ZIP, Country, Time Zone. Use for regional segmentation, call window scheduling, and geo-targeted offers.
Daily-Updated Data
The lookup database is updated daily. Numbers are never called or texted during a lookup.
The lookup database is updated daily. Numbers are never called or texted during a lookup.
How Phone Lookup Fits Your Marketing Workflow
At Lead Capture
Integrate the phone lookup API into your web form or landing page backend. When a prospect submits their number, validate it before the lead record is created in your CRM. Invalid numbers get caught at the source — they never pollute your database. Numbers found on a DNC list can still be captured but tagged so they are not called or texted for telemarketing.
Before Email & SMS Campaigns
Export your target segment, run a batch lookup on the phone numbers, and filter the results before uploading to your SMS platform or dialer. Removing landlines and invalid numbers from an SMS campaign means you stop paying for messages that cannot be delivered.
For CRM Hygiene
Contact data decays over time — numbers are given up, get ported to new carriers, or are added to DNC lists. A quarterly batch re-validation pass on your active contact universe keeps your database clean without requiring manual audits. Upload your CRM export as a CSV and download the enriched file (All data, Mobiles or Landlines).
For Fraud & Lead Quality Scoring
Many teams treat VoIP numbers on consumer lead forms with extra care. Including the line type (number_type in the API) as a scoring signal in your lead quality model lets you flag VoIP and invalid submissions for review before paying lead acquisition costs.
Phone Lookup vs Reverse Phone Lookup: What Is the Difference?
These terms are often confused. A reverse phone lookup returns owner information — name, address, and social history. A phone number lookup via validation (what this service provides) returns the number’s status, line type, carrier and location (and, with DNC Lookup, its DNC status). We do not return personal data about the number holder. For marketing and compliance purposes, validation is what you need.
What Phone Lookup Data Tells Your Marketing Stack
- Line type = Mobile → the line type for SMS and mobile-first campaigns (consent rules apply)
- Line type = Landline → voice-only, cannot receive SMS; route to call center queue
- Line type = VoIP → flag for review under your lead quality policy
- Status = Invalid → remove; the number is badly formed or not assigned to a carrier
- DNC status = Federal (National) DNC or TCPA Litigator → suppress from outbound; tag the record in your CRM
- Time zone → schedule calls and texts within permitted calling hours
- carrier → useful for SMS routing and deliverability optimization by network
Look Up Your First 1,000 Numbers Free
Start with 1,000 free Phone Lookup credits. No credit card. Clean your contact data before your next campaign.