Because your address is not detailed,i look up from the website and find 3 possible results as follows:
We found 3 possible results for "Bucklands Beach Auckland"
Address Type Town or City Postcode
Urban Manukau 2010
Urban Manukau 2012
Urban Manukau 2014
Here i suggest you use this website to search by yourself:
when you get the detailed information,you can find the exact answer.
Good luck:)