Private logistics Production

Postcode Structure Checker Production

Compare one short postcode string with a frozen country shape; this Production never checks allocation, locality, or an address.

No address input, storage, saved state, usage metrics, or network provider. Enter one short postcode string only.

One short string · no address fields

Check a postcode shape

Select a country and enter one short postcode. The browser compares characters with the frozen review pack; nothing is sent anywhere.

no_result

Choose a country and submit one short postcode.

Shape, not a decision

Use an operator lookup for the final check

A structure match is not postcode existence, locality matching, address validation, or deliverability.

Reviewed references

Source records in the frozen pack

Static HTML keeps each reviewed host and path as separate text nodes. The same-origin fragment is the fallback; a reviewed destination is assembled only after a deliberate click.

auspost-finder-boundary

AU

Australia Post postcode-finder limitation

Owner
Australia Post
Reviewed
2026-08-05
Source SHA-256
c65baf462a9ce2116089593c2798af432a912923d84e113db00c7632218790a9
auspost.com.au/postcode/00000

royalmail-finder

GB

Royal Mail Postcode Finder and PAF scope

Owner
Royal Mail
Reviewed
2026-08-05
Source SHA-256
2f758b48ee7dea029d263fb92a9f1b2118685d3a1d997d719baab2cc1b60cd04
www.royalmail.com/find-a-postcode

Boundaries

Questions before using a shape check

Does a shape match show that a postcode exists?

No. It only compares characters with a frozen structural sample; allocation and locality records remain outside this Production.

Why does the Production show a normalized value?

The normalized value is a display aid for the permitted uppercase or separator action. The original entry is not saved or shared.

Can I paste an address or recipient here?

No. The checker accepts one short postcode string and has no city, street, recipient, order, or address fields.