Postcoder

Postcoder

Allies Computing
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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.

About

TrustLookup is a hosted API and web dashboard for checking phone numbers, email addresses, IP addresses and domains. The API identifies each value and returns results for selected checks. Phone checks cover validity, format and line type; paid-plan lookups add the current carrier, number portability and live HLR status. Email checks assess syntax, mail servers, mailbox response, disposable and role addresses, and catch-all domains. IP results include location, network and ISP, hosting, VPN, proxy and Tor indicators, plus a free public spam-blocklist check. Domain lookups provide WHOIS and age information. Free tools check SPF and DMARC records and provide VIN, NPI and USDOT lookups. Users can check items in the browser, call the API or upload CSV files for bulk processing. Paid plans include Pro phone lookups and CSV uploads; Growth and Scale add webhooks, and Growth includes five team seats. The service supports developers and teams reviewing signups, contact data and risk.

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

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

Audience

Developers, fraud and risk teams, and sales and marketing ops that need to check phone numbers, emails, and IPs.

Support

Phone Support Supported
24/7 Live Support Supported
Online Supported

Support

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

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

No images available

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

Pricing

$19/month
Starter is $19/month for 7,500 credits. Paid-plan credits roll over for three months. Paid top-ups are $3.50 per 1,000 credits. The free plan includes 250 credits each month.
Free Version Supported
Free Trial Not 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 Not Supported
Live Online Supported
In Person Not Supported

Training

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

Company Information

Allies Computing
Founded: 1987
United Kingdom
postcoder.com

Company Information

TrustLookup
Founded: 2026
Cyprus
trustlookup.io

Alternatives

Postcodes.io

Postcodes.io

Ideal Postcodes

Alternatives

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# 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

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
Claim Postcoder and update features and information
Claim Postcoder and update features and information
Claim TrustLookup and update features and information
Claim TrustLookup and update features and information