Postcode shape
For a form that should reject SW1A 1A before it calls a lookup. Start with Getting started.
GET /v1/check/postcode checks the UK outward and inward shape, including GIR 0AA. BFPO is not covered. This is not a Royal Mail lookup. To resolve a real code, use postcode (GET /v1/postcode).
Try it
https://fetch.li/v1/check/postcode?number=SW1A%201AA
Parameters
| Parameter | Required | Description |
|---|---|---|
number |
Yes | UK postcode, space optional |
Demo
GET endpoints work without an API key on the public demo tier (60 calls per hour per IP).
Related: postcode lookup, Pulse, checks overview.
Try it
GET https://fetch.li/v1/check/postcode
Answer
Response