What tariffs do you support?
What services do you support?
What information sources do you subscribe to for tariff data?
How often do you update your tariff database?


What tariffs do you support?
NDA provides the most comprehensive tariff data in North America. In the US, we support all RBOCs and ILECs and many IXC tariffs. In Canada, we support all provincial company tariffs. Internationally, we support North American and European country gateway to gateway and city to city tariffs.

More than 3000 US, Canadian and International tariffs are drawn from tariff subscriptions and telco web-sites.

Click on the below links for more detailed information on the carriers and services supported as part of the standard AMS offering

U.S.A.

Canada

What services are supported?
All voice, data and IP services are supported including DSO, DS1, DS3, OCn, Ethernet, DSL, IPVPN, VoIP, ISDN, Frame Relay, ATM, TLS, Centrex, PBX, POTS and Internet Access. Equipment and Managed Services pricing is also supported.

What information sources do you subscribe to for tariff data?
In North America, we subscribe directly to the Telephone Company tariffs and also draw information from Telco websites. Tariff information outside of North America is supplied by Tarifica.

How often do you update your tariff database?
NDA updates tariff data on a daily basis. Updates are compiled and sent to customers twice per month - the most frequent in the industry.