Derived from:
- The OpenCellID DB http://opencellid.org
- Newest record: 2021-06-07T23:49:37
- CGI DB
- CC by SA 3.0 https://creativecommons.org/licenses/by-sa/3.0/
- The FCC License DB http://data.fcc.gov
- Newest record: 2021-06-04T15:33:48
- ARFCN DB
- Twilio's API: https://twilio.com
- CGI to provider correlation