$ iptables -I INPUT -m iprange --src-range 50.32.0.0-50.63.255.255 -j DROP
$ iptables -I INPUT -s 184.168.0.0/184.168.255.255 -j DROP
...

In file included from geoip.cpp:7:0:
geoip.h:98:1: error: stray '\361' in program
 bool сompare_range_start(const ip_range_t& lhs, const ip_range_t& rhs)
 ^
geoip.h:173:2: error: stray '\361' in program
  std::sort(ip_range.begin(), ip_range.end(), сompare_range_start);
  ^
geoip.h:203:2: error: stray '\361' in program
  std::vector<ip_range_t>::iterator it = std::lower_bound(ip_range.begin(), ip_range.end(), x, сompare_range_start); 
  ^
geoip.h: In member function 'bool geoip::init_csv(const char*)':
geoip.h:153:63: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
   ip_range.push_back(ip_range_t(val[0], val[1], (ip_place_t*) pl_id));
                                                               ^
geoip.h:176:37: error: cast from 'const ip_place_t*' to 'int' loses precision [-fpermissive]
  prev->place = pl_recode[(int)prev->place];
                                     ^
geoip.h:178:36: error: cast from 'const ip_place_t*' to 'int' loses precision [-fpermissive]
   cur->place = pl_recode[(int)cur->place]; // замена на постоянные ссылки
                                    ^