number
As for the main postcode file.

kana
The name of the place of business in kana.

kanji
The name of the place of business in kanji.

ken_kanji
The kanji version of the prefecture name.

city_kanji
The kanji version of the city name.

address_kanji
The kanji version of the address name.

street_number
The exact street number of the place of business.

new_postcode
As for the "ken_all" fields.

old_postcode
As for the "ken_all" fields.

post-office
The post office which handles mail for this postcode.

type
0=Large company
1=Private

multiple-postcode
0=Not multiple, also 1,2,3.

Alteration code
0=No change
1=New addition
2=Deleted

