Back to Tools

Area Code & State Finder for Phone Numbers

Upload US phone numbers to append area code, NPANXX and state context to each record. This is a lookup and enrichment workflow for routing, segmentation, reporting and lead preparation; it adds reference fields to your file and does not filter or remove rows.

United States only Free
1Upload 2Configure 3Process 4Download
Upload
Drop your CSV file here or click to browse
Supported: .csv, .txt, .tsv  -  Max 50MB site upload setting
Configure
Which column contains the 10-digit phone numbers?

Outputs include normalized phone values and optional NPANXX + state fields (based on reference data).

Tool information

What it does

Upload US phone numbers to append area code, NPANXX and state context to each record. This is a lookup and enrichment workflow for routing, segmentation, reporting and lead preparation; it adds reference fields to your file and does not filter or remove rows.

How it works

  1. Upload your CSV file
  2. Select the phone column
  3. Run the tool to append location context
  4. Download the enriched output

Output / privacy

Normalizes phones, extracts NPANXX, and appends state from reference data.

Uploads and generated files are stored privately and retained for the configured retention period.

Reference-based phone enrichment

The tool reads each phone number, extracts its area code and NPANXX, and appends the matching reference fields available to it — typically area code, NPANXX and state. It adds these columns to each row and keeps the row count unchanged.

This is a reference lookup, not a location service. An area code reflects where a number was originally assigned, so the output does not identify a person’s current physical location or provide carrier-level precision.

Because it is enrichment rather than filtering, every source row is retained, including rows a team may later choose to include or exclude in a campaign.

How area-code and state lookup helps outbound teams

Routing and territory assignment: a consistent state and NPANXX field lets teams assign records to the right region, campaign or agent group without manual lookups.

Segmentation: geography fields make it easy to split a national list into regional or state-based groups before a dialer upload or CRM import.

Reporting: standardized state fields let dashboards and summary reports group results by geography instead of relying on inconsistent free-text columns.

Lead preparation: appending geography to a raw lead export adds the context that later cleaning, suppression and dialing steps expect, while keeping the original rows intact.

This tool performs lookup and enrichment only. To include or exclude rows based on supplied state, area code or NPANXX values, use the State, Area Code & NPANXX Phone Filter, which classifies records into matched and unmatched exports.

FAQ

What does this tool append?
It appends location context based on the phone number, such as area code and state fields for routing and segmentation.
Can I run it on bulk lists?
Yes. Upload your CSV, select the phone column, and download the enriched export.
Is my upload public?
No. Uploads and outputs are stored privately and served via protected download links.