Postcoder

Postcoder

Allies Computing
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About

1Lookup is an enterprise-grade data verification and intelligence platform that gives businesses real-time, high-accuracy validation for phone numbers, email addresses, and IP addresses through a unified API, helping ensure data quality, reduce fraud, and protect user experiences. It aggregates data from authoritative sources, including carrier networks, FCC databases, and global threat feeds, with daily updates to deliver sub-second verification results that detect invalid, risky, or fraudulent identities, improve deliverability, and flag disposable or suspicious contact data. The core services include phone validation with HLR and carrier lookup, phone spam and risk detection, email address validation with SMTP checks and disposable domain screening, and IP intelligence for precise geolocation, proxy/VPN detection, and risk scoring, all accessible via modern REST API calls that scale to millions of daily lookups without rate limits.

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.

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

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

Audience

Developers, product teams, and risk/compliance professionals who need an API to validate and verify user phone numbers, email addresses, and IPs in real time to improve data quality, prevent fraud, and reduce risk

Audience

Organizations wanting a tool to improve their address lookup and form validation processes

Support

Phone Support Not Supported
24/7 Live Support Supported
Online Supported

Support

Phone Support Supported
24/7 Live Support Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$49 per month
Free Version Not Supported
Free Trial Supported

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

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Supported
Live Online Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

1Lookup
United States
www.1lookup.io

Company Information

Allies Computing
Founded: 1987
United Kingdom
postcoder.com

Alternatives

Alternatives

Postcodes.io

Postcodes.io

Ideal Postcodes
Antideo

Antideo

Bizmindz Technologies LLP

Categories

Categories

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

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
JavaScript Not Supported
Ninja Forms Not Supported
Node.js Not Supported
PHP Not Supported
Python Not Supported
WP Fluent Forms Not Supported
Wix Not Supported

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
JavaScript Supported
Ninja Forms Supported
Node.js Supported
PHP Supported
Python Supported
WP Fluent Forms Supported
Wix Supported
Claim 1Lookup and update features and information
Claim 1Lookup and update features and information
Claim Postcoder and update features and information
Claim Postcoder and update features and information