PostcoderAllies Computing
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Postcodes.ioIdeal Postcodes
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Related Products
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About
Postcoder is an API from Allies Computing that gives developers a single endpoint for verifying and validating customer contact data at the point of entry. Used across sectors from healthcare to retail, it's built to drop into checkout, onboarding, and account creation flows with minimal friction.
What's included:
Address lookup – Postcode, partial address, or coordinate-based search across Royal Mail PAF, Ordnance Survey AddressBase, and 249 countries worldwide.
Bank validation – Real-time sort code and account number verification, with branch data and direct debit eligibility returned in the response.
Email validation – Domain and formatting checks with disposable address detection.
Mobile validation – Live network status checks across 200+ countries.
OTP verification – SMS-based one-time password delivery.
Clear documentation, multi-language sample code, and a straightforward REST structure mean integration is quick. 30 day free trial with no credit card required.
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About
Postcodes.io is an open source postcode lookup API and geocoder for the United Kingdom that lets developers search, validate, and geolocate UK postcodes while retrieving detailed administrative and geographic information. The API can look up complete postcode records, reverse geocode latitude and longitude coordinates to nearby postcodes, search by partial postcode strings, find nearest postcodes to a location, and query outward codes and places. Responses can include coordinates, regions, administrative districts, counties, wards, parishes, parliamentary constituencies, statistical areas, health geographies, rural-urban classifications, and other associated codes and attributes. Bulk reverse geocoding allows large sets of coordinates to be converted into their nearest postcode areas, while autocomplete and validation methods simplify postcode entry and verification workflows.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Organizations wanting a tool to improve their address lookup and form validation processes
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Audience
Developers and organizations seeking to validate, search, geocode, and retrieve geographic or administrative data for UK postcodes through an API
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Support
Phone Support
Supported
24/7 Live Support
Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Supported
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API
Offers API
Supported
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
£27 per 500 credits
Start with a free trial, then pay-as-you-go or pay monthly. Credit packs start at £27, and monthly plans start at £45. Volume discounts and charity/public sector pricing available.
Free Version
Not Supported
Free Trial
Supported
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Pricing
No information available.
Free Version
Not Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationAllies Computing
Founded: 1987
United Kingdom
postcoder.com
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Company InformationIdeal Postcodes
United Kingdom
postcodes.io
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Alternatives |
Alternatives |
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Categories |
Categories |
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Address Verification Features
Address Validation
Supported
Autocomplete
Supported
Automatic Formatting
Supported
Data Cleansing
Supported
Data Discovery
Not Supported
Data Quality Control
Not Supported
Data Verification
Supported
Geographic Maps
Not Supported
Geolocation
Supported
Metadata Management
Supported
Reporting / Analytics
Supported
Search / Filter
Supported
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Integrations
C#
Supported
CSS
Supported
Contact Form 7
Supported
Divi
Supported
Elementor
Supported
Formidable Forms
Supported
Forminator
Supported
Gravity Forms
Supported
Gutenberg Technology
Supported
HTML
Supported
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Integrations
C#
Not Supported
CSS
Not Supported
Contact Form 7
Not Supported
Divi
Not Supported
Elementor
Not Supported
Formidable Forms
Not Supported
Forminator
Not Supported
Gravity Forms
Not Supported
Gutenberg Technology
Not Supported
HTML
Not Supported
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