+800.2660.2660 is a UIFN number.

Although it resembles the domestic toll-free numbers of many countries, it is actually a country-neutral toll-free "UIFN" number that can be reached from the following countries using the corresponding dialing sequence shown:

Argentina 00-800-2660-2660
Australia 0011-800-2660-2660
Belgium 00-800-2660-2660
Brazil 0021-800-2660-2660
China  00-800-2660-2660
Denmark 00-800-2660-2660
Finland 990-800-2660-2660
France  00-800-2660-2660
Germany 00-800-2660-2660
Hong Kong  001-800-2660-2660
Hungary 00-800-2660-2660
Ireland  00-800-2660-2660
Israel (Bezek) 014-800-2660-2660
Israel (Barak ITC) 013-800-2660-2660
Israel (Golden Lines) 013-800-2660-2660
Italy  00-800-2660-2660
Japan (NTT) 0033-010-800-2660-2660
Japan (KDD) 001-010-800-2660-2660
Japan (IDC) 0061-800-2660-2660
Japan (ITJ) 0041-800-2660-2660
Korea, South (KTA) 001-800-2660-2660
Korea, South (DACOM) 002-800-2660-2660
Luxembourg 00-800-2660-2660
Macau 00-800-2660-2660
Malaysia 00-800-2660-2660
Netherlands 00-800-2660-2660
New Zealand 00-800-2660-2660
Norway  00-800-2660-2660
Philippines  00-800-2660-2660
Portugal 00-800-2660-2660
Singapore 001-800-2660-2660
South Africa 09-800-2660-2660
Spain 00-800-2660-2660
Sweden  00-800-2660-2660
Switzerland  00-800-2660-2660
Taiwan 00-800-2660-2660
Thailand  001-800-2660-2660
United Kingdom  00-800-2660-2660