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North American carrier lookup

Find the line type, carrier and location of North American numbers.

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Checks on this page

  • Carrier lookup

Checks you can order

  • Carrier lookup

    Returns the line type, carrier, underlying carrier and location of each number.

    Columns in the result file

    • Number
    • Line type
    • Country code
    • Carrier
    • Underlying carrier
    • Region
    • Region (Chinese)
    • City

Good to know

  • For numbers with country code +1: the United States, Canada and the other North American Numbering Plan regions.
  • This looks up carrier information; it does not tell whether a number uses any app.
  • Numbers are only checked to start with 1 or +1, so malformed numbers may still be charged.

Exported CSV sample

Representative output columns and masked sample rows exported in UTF-8 CSV format.

NumberLine typeCountry codeCarrierUnderlying carrierRegionCity
+1202555****MOBILEUSVerizonVerizon WirelessDCWashington
+1415555****MOBILEUSAT&TAT&T MobilityCASan Francisco
+1647555****MOBILECARogersRogers CommunicationsONToronto
API endpoint referenceSupported country codes

How orders work

  • Number format

    A UTF-8 TXT or CSV file with one column and no header, one international number with its country code per line (a leading + is fine). Up to 100 MB per file, or paste the numbers directly.

  • Billing

    The quote counts the numbers left after removing duplicates and invalid entries; invalid numbers are not charged. The quote is reserved when you order, and once the order finishes you pay for the numbers actually processed. The rest goes back to your balance.

  • Result files

    Successful numbers come in a CSV file and the others in a TXT file. Large orders are delivered in batches, so you can download finished parts while the order runs. A number in the unsuccessful file may simply not have been checked successfully this time; it is not proof the number is unregistered.

  • Countries and regions

    International numbers with a country code are supported, except numbers from mainland China (+86).

Start bulk phone number checking & active account filtering

Upload your list and CheckIM strips duplicates and invalid numbers for free, then gives you an instant quote for registration or activity checks.

See pricing