Блог

Гайды и заметки об адресных форматах, тестовых данных и смежных процессах.

Decoding Hong Kong addresses: no ZIP, many floors

Flat, floor, block, estate: how Hong Kong packs a whole location into one line, and why there is no postal code.

The Court of Chancery, franchise tax and the no-sales-tax combo that made a small state a corporate giant.

Why Delaware, Montana, New Hampshire, Oregon and Alaska keep popping up in billing test data.

A practical walkthrough for developers who need a US storefront sandbox account.

Odd/even sides, block-based grids and the logic behind American street numbers.

Two-letter USPS codes vs full state names, and how to keep form validation happy with either.

Random strings break validators; format-aware sample data finds real bugs earlier.

Recipient, street line, city-state-ZIP: what each part of a standard American address means and how validators read it.