nanpa_lookup

Look up callers in the North America Number Plan Adminstrator (NANPA) database. Useful for identifying source of robocalls.

Quickstart

$ pip install nanpa_lookup

Query the database for a number:

$ nanpa_lookup -n 9072001234 --field company
GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION

Or provide a file containing phone numbers:

$ nanpa_lookup -f numbers.txt --field company
GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC
ONVOY, LLC - TN
GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION

Grab call log for last 30 days from a rooted Android phone via adb:

$ nanpa_lookup -a 30 --field company | sort | uniq -c | sort -n
3 ONVOY, LLC - TN
3 PEERLESS NETWORK OF TENNESSEE,
4 BELLSOUTH TELECOMM INC DBA SOU
4 TELEPORT COMMUNICATIONS AMERIC
5 NEW CINGULAR WIRELESS PCS, LLC
5 ONVOY, LLC
6 LEVEL 3 COMMUNICATIONS, LLC -
9 No matches found
11 ILLINOIS BELL TEL CO
27 BRIGHTLINK COMMUNICATIONS, LLC

Usage

usage: nanpa_lookup [-h] [-n N] [-f F] [-a A] [--field FIELD] [--query QUERY]
[--database DATABASE]

Look up number in NANPA database

options:
-h, --help           show this help message and exit
-n N                 number
-f F                 file containing list of numbers
-a A                 pull numbers from ADB device
--field FIELD        print out specific field (company, npanxxy, type, ocn, email)
--query QUERY        make arbitrary SQL query
--database DATABASE  numbers database

Caveats

This does not work for robocalls which spoof the origin number, only for spammers making use of legitimate numbers from VOIP companies. This may eventually be addressed by STIR/SHAKEN.