code: def _get_region(self, ipnum):
          
          region_code = None
          country_code = None
          seek_country = self._seek_country(ipnum)
  
          def get_region_code(offset):
              region1 = chr(offset // 26 + 65)
              region2 = chr(offset % 26 + 65)
              return ''.join([region1, region2])
  
          if self._databaseType == const.REGION_EDITION_REV0:
              seek_region = seek_country - const.STATE_BEGIN_REV0
              if seek_region >= 1000:
                  country_code = 'US'
                  region_code = get_region_code(seek_region - 1000)
              else:
                  country_code = const.COUNTRY_CODES[seek_region]
          elif self._databaseType == const.REGION_EDITION_REV1:
              seek_region = seek_country - const.STATE_BEGIN_REV1
              if seek_region < const.US_OFFSET:
                  pass
              elif seek_region < const.CANADA_OFFSET:
                  country_code = 'US'
                  region_code = get_region_code(seek_region - const.US_OFFSET)
              elif seek_region < const.WORLD_OFFSET:
                  country_code = 'CA'
                  region_code = get_region_code(seek_region - const.CANADA_OFFSET)
              else:
                  index = (seek_region - const.WORLD_OFFSET) // const.FIPS_RANGE
                  if index < len(const.COUNTRY_CODES):
                      country_code = const.COUNTRY_CODES[index]
          elif self._databaseType in const.CITY_EDITIONS:
              rec = self._get_record(ipnum)
              region_code = rec.get('region_code')
              country_code = rec.get('country_code')
  
          return {'country_code': country_code, 'region_code': region_code}
docs: Seek and return the region information.
          Returns dict containing country_code and region_code.
  
          :arg ipnum: Result of ip2long conversion