API archive entry · source-reported
Postcodes.io
Postcode lookup & Geolocation for the UK
Other Geocoding APIs
These records share a directory category and are ordered by similarity of reported access facts. They are a shortlist, not proof of drop-in compatibility.
17NAS
Free IP geolocation API with IPv4/IPv6 detection, ASN and country info, no auth required
No auth · HTTPS reported · CORS Yes
IPKit
IP lookup with location, ASN/ISP and VPN/proxy/Tor signals
No auth · HTTPS reported · CORS Yes
PostalCodeCheck
City, region and coordinates for 887,000+ postal codes across 95 countries
No auth · HTTPS reported · CORS Yes
SearchPinCode
Indian postal PIN code lookup, post office locator and district data
No auth · HTTPS reported · CORS Yes
Moradas
Portuguese address autocomplete and 7-digit postal codes (CP7)
No auth · HTTPS reported · CORS Yes
ipgeolocationapi
IP geolocation with ASN, timezone, currency and threat data, 5,000 keyless calls a day
No auth · HTTPS reported · CORS Yes
How to compare them
Coverage
Compare exact endpoints, fields, geography, history, and update frequency.
Operating cost
Model request volume, caching, overages, support, and migration cost.
Integration risk
Test auth, errors, pagination, latency, versioning, and outage behavior.
Data rights
Review attribution, redistribution, retention, privacy, and commercial-use terms.
Source reference
This page separates source-reported facts from questions that need live provider verification.