Add Country Whitelist
Written by B3Networks Academy
Updated at June 7th, 2023
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Table of Contents
1. What is Country code?
Country code is the Telephone dialing prefixes for the member countries of the International Telecommunication Union (ITU).
- Example:
- Vietnam: +84
- Singapore: +65
- USA/Canada: +1
France: +33
By Default, SIP Trunk allows all country codes.
2. Configuration:
Country Whitelist is a call blocker feature that you can narrow down the selection of countries to which your outbound calls can reach. It is a useful security feature that helps to avoid international calls in case of being hacked. All the calls to the destinations not included in the whitelist will be automatically blocked.
To add Country Whitelist, follow the steps below:
- Go to SIP
- Select Security
- Choose Country white list
- Enter the country name or country code
- Add Country
Note:
If you leave the Country Whitelist empty, it means no restriction.
3. Additional
In most hack cases, hackers use your numbers to call out to their overseas premium numbers that unreasonably overcharge. That’s how hackers collect money from users. Hence, adding Country Whitelist is a highly recommended feature that you should activate this features to protect your SIP account.
In order to protect users from hackers, we have put default 20 countries in the country whitelist whose routes are quite secured. Here is the list:
- Singapore (65)
- Malaysia (60)
- Multiple countries (USA, Canada, Caribbean nations) (1)
- Hong Kong (852)
- New Zealand (64)
- Taiwan (886)
- United Kingdom (44)
- United Arab Emirates (971)
- Thailand (66)
- Philippines (63)
- Pakistan (92)
- Korea, Republic of (82)
- Japan (81)
- Indonesia (62)
- India (91)
- Germany (49)
- France (33)
- China (86)
- Multiple countries (Australia, Christmas Islands) (61)
- Viet Nam (84)