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Address generator

Japan address generator

Built on the real addressing rules of Japan — a name, an address, a phone number, and an anonymous email you can actually use, in one go.

NEXMASK · IDENTITY ISSUED
Name
山本颯太
Address
〒920-9620 石川県金沢市春日町2-30-8 Japan
Phone
+81 76-507-0425
Anonymous email
[email protected]

Generated locally in your browser. It never reaches a server — we cannot see it either.

How Japan postal codes work

Japanese postal codes run three digits, a hyphen, then four — usually prefixed with the 〒 mark (〒980-0021). The first three locate a municipality, the last four a chōme block. Combined with the banchi, the code gets you close to a specific building.

How a Japan address is written

Japanese addresses run the opposite way to Western ones: largest unit first. Postal code, prefecture, municipality, then the chōme-banchi-gō block, then the building. Only when romanised is the order reversed. A string like 1-2-3 is chōme-banchi-gō, not a house number.

In practice

Where people get it wrong

  • 01

    There are no street names

    Most Japanese addresses do not use street names at all. They locate by block: town, chōme, banchi, gō. You navigate by block, not by numbers rising along a road.

  • 02

    Block numbers are not sequential along a street

    Banchi were historically assigned in order of land registration, so numbers on either side of one road may be unrelated. This is why addresses in Japan are famously hard to navigate.

  • 03

    The prefecture is mandatory

    Unlike Germany, where the state is dropped, Japanese addresses always carry the prefecture — many municipality names repeat across prefectures.

FAQ

Questions about Japan addresses

What does 1-2-3 mean in a Japanese address?

Chōme, banchi, gō in that order: block 1 of the town, lot 2 within the block, building 3 on the lot. It is not a house number and cannot be split apart.

How do I write a Japanese address on an English form?

Reverse the whole order, smallest first: 3-2-1 Honcho, Aoba-ku, Sendai-shi, Miyagi 980-0021, Japan. The postal code follows the prefecture, matching Western convention.

Are the generated Japanese names common ones?

Surnames come from the ten most common in Japan (Satō, Suzuki, Takahashi…) and given names from recent high-frequency baby names. The combination matches real demographics rather than reading as invented.

Should the 〒 symbol go in the form?

No. 〒 is Japan Post’s marker; forms want just the digits and hyphen (980-0021), and some strip the hyphen too.

The address is fake. Do not pair it with a real inbox.

The part of a synthetic identity most likely to expose you is the email address — it carries your real name, your other accounts, and every sign-up you have ever made. Add an anonymous alias and the identity finally has nothing to do with you.