Ideal postcodes
Postio.co.uk
USZipLookup
Zipcodestack
Fetchify
Data8 UK
Geocode.xyz
Postal code lookup API and downloadable country datasets for address validation, checkout, logistics and geocoding workflows.

OpenRouter
boldrouter
liteLLM
APIVAI
CometAPI
Eden AI
APIPark
Cheap unified AI API: reach Claude, GPT, Gemini and 100+ models via one OpenAI-compatible endpoint. Pay-as-you-go from $0, free tier, official SDKs in 8 languages.

Which is more popular?
Based on our record, Api.Airforce seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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PC
PostalCodes.info
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|---|---|---|
| Website | postalcodes.info | api.airforce |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.

Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using PostalCodes.info and Api.Airforce. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking PostalCodes.info since May 2026.
Third-party gateways change the economics. As of Aug 2026, Api.Airforce offers Claude Opus 5 at $3.58 per million input tokens and $17.88 per million output tokens through an OpenAI-compatible API, undercutting official pricing by... - Source: dev.to / 3 months ago
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Fast UK address, email & phone validation APIs for developers. Official Royal Mail PAF data. Pay as you go, 100 free lookups.
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A unified, OpenAI-compatible gateway to every major LLM provider. One endpoint, one key, one bill - with automatic routing and failover.
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Find any US ZIP code or Canadian postal code instantly. Search by city, address or code - get accurate location, county & population data free.
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One library to standardize all LLM APIs
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