Cables_DB=# SELECT country_code, city_name, latitude, longitude, radius FROM geoip WHERE '8.8.8.8' << netblock LIMIT 1;
 country_code | city_name | latitude | longitude | radius 
--------------+-----------+----------+-----------+--------
 US           |           |   37.751 |   -97.822 |   1000
(1 row)

Cables_DB=# EXPLAIN SELECT country_code, city_name, latitude, longitude, radius FROM geoip WHERE '8.8.8.8' << netblock LIMIT 1;
                                      QUERY PLAN                                       
---------------------------------------------------------------------------------------
 Limit  (cost=0.41..8.43 rows=1 width=35)
   ->  Index Scan using geoip_netblock_idx on geoip  (cost=0.41..8.43 rows=1 width=35)
         Index Cond: ((netblock)::inet >> '8.8.8.8'::inet)
(3 rows)