I had configured my pdb module to accept 5 number prefixes by doing:

In pdbt.c:

bufsize = slen + 1 + 1 + 4 + 1 + 1; // line buff
er (telephone number + colon + white space + carrier ID + newline + \0)

...

And i hadn't had any problem until now. I had rows in my .csv like:

0645052050;10122

And it worked. The problem I have now is with prefixes bigger than 40000. I get segmentation fault when doiong a query with pdbt, however the pdbt build works good without any error. 

At first i thought of a buffer problem but eventhough testing with a .csv of 2 rows with 50000 prefixes will not work. Another curious effect is that for a prefix like 84238 the server changes the answer to 18754. I dont know why...

Could anyone help me please?

Thanks and regards,

Igor.