Call Screening and Blocking - Blocked International Destinations

Pre-existing blocked locations

International Revenue Sharing Fraud, or IRSF,  is a huge problem. Through fishing attacks or bad actors within an organization, fraudsters gain access to a user's login credentials. Once able to sign in the fraudster begins making a high volume of calls to premium international destinations and up to 25% of the cost of the call goes into their pocket! 

Due to the high risk of this type of fraud certain international destinations are automatically blocked by AVOXI. Outbound calls cannot be completed to these locations from the AVOXI web or mobile phones. 

To identify blocked destinations sign into your AVOXI platform and follow the below steps. 

  1. Select the "Home" section of the lefthand navigation bar.
  2. Click the "Settings" tab.
  3. Select the "Block List" section. 

Blocked destinations are created based on source number or dial prefix. Source number will block all calls to the number. Dial prefix will block all calls to the any number starting with the prefix.

  • Example source number:  +14048592703 
  • Example prefix: +14*

To unblock a destination due to a legitimate business need the rule blocking a location can be deleted in the AVOXI platform. 

  1. Select the "Home" section of the lefthand navigation bar.
  2. Click the "Settings" tab.
  3. Select the "Block List" section. 
  4. Click "Delete" on the destination


Blocked Outbound Destinations

Below is a list of outbound destinations that are blocked by default.

Country
ISO Code
Country Code
Afghanistan
AF
93
Albania
AL
355
Antarctica
AQ
672
Azerbaijan
AZ
994
Austria
AT
43
Belarus
BY
375
Bulgaria
BG
359
Cambodia
KH
855
Cameroon
CM
237
Chad
TD
235
Croatia
HR
385
Cuba
CU
53
Democratic Republic of Congo
CD
243
Ecuador
EC
593
Georgia
GE
995
Greenland
GL
299
Guinea
GN
224
Haiti
HT
509
Ivory Coast
CI
225
Latvia
LV
371
Libya
LY
218
Lithuania
LT
370
Madagascar
MG
261
Maldives
MV
960
Morocco
MA
212
Niger
NE
227
North Korea
NP
850
Papua New Guinea
PG
675
Republic of the Congo
CG
242
Samoa
WS
685
Satellite
- 881
Serbia
RS
381
Sierra Leone
SL
232
Solomon Islands
SB
677
Somalia
SO
252
South Sudan
SS
211
Tanzania
TZ
255
Tokelau
TK
690
Zimbabwe
ZW
263


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Updated:

December 6th, 2022

Author:

Jeff Cook

Updated By:

Kay Senior

KB ID:

1611753

Page Views:

2703

Tags:

blocked number, unblock, fraud, block list, call screening, blocked destinations

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