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Postcoder checks and validates mobile phone numbers in real-time as soon as they're typed into your form. Reduce fraudulent or incorrect signups, and collect valid and active mobile phone numbers from genuine customers.
Illustration showing Postcoder validating a mobile phone number, including the validation result, network, country, number and status.
Postcoder mobile validation queries the Home Location Register (HLR) databases of global network providers in real time to confirm if a number is active, assigned and reachable via call or SMS.
Animated demo showing a mobile number being entered, validated and accepted during checkout.
"60% of consumers intentionally provide incorrect information when submitting their details online."
Source: Verve Research
Postcoder instantly checks if international mobile phone numbers are real and active.
Postcoder identifies recently active mobile numbers, so your calls and SMS reach real users at the right time.
Postcoder standardises international mobile numbers into a consistent format and returns network provider details.
Prevent fake, inaccurate or dead mobile phone numbers from being used to create bogus accounts.
Save time and money by verifying a mobile phone number is active and switched on before trying to call it.
Reduce the risk of your customer waiting for a code that never arrives by validating their mobile number first.
Avoid losing leads or customers at registration due to accidental typos in their mobile phone number.
Increase the effectiveness of your SMS campaigns by ensuring your customers get the texts they want from you.
Standardise mobile phone numbers by automatically removing unnecessary characters like spaces and brackets.
Postcoder and its team of address and technology specialists meet the needs of high-demand applications and rapidly growing businesses.
Built on quality management best practices you can trust.
Seamlessly handles enterprise volumes and traffic spikes.
Designed for secure, privacy-first data handling.
Proven reliability to keep your integrations running smoothly.
Our engineers are on standby 24/7 to respond to service disruptions.
Fast, reliable API performance at all times, even under load.
Connect easily with your existing tech stack.
Real-time mobile number validation with carrier, status and reachability checks across all countries.
Personalised setup and best-practice guidance.
Smooth transition from legacy systems or providers.
Get help via chat, email or phone - at no extra cost.
Businesses rate Postcoder 4.7 stars out of 5 on the world's most trusted software marketplace.
"Having a more simplified checkout page with the help of Postcoder has had two major benefits to our business. Faster checkouts by customers who haven't had to type in their full address, a much simpler customer journey and a major reduction in data errors; where we saw a big drop in incorrect details entered."Alex Woods Digital Marketing Executive / Victorian Plumbing
"We picked Postcoder because the API is simple to use and it supports many countries which we want to scale out to."David Annez Head of Engineering / loveholidays
"The reason we like Postcoder is that the rooftop lat/long coordinates have proven to be far more accurate than any other service and Postcoder has hugely increased our successful delivery rates."Laura Bailey E-commerce Product Manager / Pasta Evangelists
"Postcoder offers a seamless integration with our services. It is very popular with our customers."James Gutterson Commercial Manager / Signicat
"Postcoder has been great; there has been a noticeable quality increase in our campaigns. In some the pickup rate went from 30% to 60-70% and our appointment ratings for a campaign went from a 15% average to 40% for one client!"Daniel Jones IT Technician / Lead Pronto
"Postcoder is a single API that provides all the features we need... Rather than integrate several APIs, we only had to integrate one."Carl Horn Head of Digital Servicing & Customer Transformation / Capquest
"Postcoder ensures that all the address data, the mobile number and the email addresses that our customers give us are correct. It really speeds up the process for our customers."Julie Taylor Operations Director / Barrhead Travel
