Address Validation
Our turn-key solution for your address records. Clean, validated addresses. Worldwide.
Accurate, standardised address data for every country you operate in. We maintain the software, the data, and the updates. You stay focused on your business.
Address validation built for the real world
Built to handle addresses as they actually arrive in production: inconsistent, abbreviated, incomplete, in multiple languages and formats. Not just the easy cases that generic APIs handle well.
Validation & Verification
Checks whether an address physically exists against official postal authority data. Returns a confidence score and per-field validation status for every request.
Standardisation & Correction
Expands abbreviations, corrects house number positions, normalises formatting, and returns addresses in the official postal standard for each country.
Address Enrichment
Validation returns more than a corrected address. Each response includes structured components, country-specific fields, and metadata ready to use directly in your systems.
Bad addresses cost more than you think
Every incorrect address in your database creates a chain of downstream costs: failed deliveries, customer complaints, wasted postage, and degraded analytics. Address validation stops that at the source.
Failed deliveries
An undeliverable address means a returned shipment, a frustrated customer, and a re-delivery cost. Validating at the point of entry prevents the problem before it starts.
CRM data quality
Every bad address that enters your CRM compounds over time: duplicates, misrouted campaigns, incorrect billing. Clean input means a clean database, not just a clean shipment.
Data stays with you
Your data stays in your environment. Deploy on your own infrastructure or let us host it for you. No personal addresses crossing third-party boundaries.
Simple API. Serious results.
One endpoint. Address in, clean address out. Integrate in hours, not weeks.
Send the raw address
Submit any structured or freeform address to our REST API. The service handles parsing, validation, standardisation, and matching in one simple request.
Engine parses and validates
The address is parsed into components, matched against official postal data, and enriched with standardised field values and a confidence score.
Receive structured, clean output
A clean, standardised address with per-field validation status, correction flags, and confidence metadata. Ready to store in your CRM, ERP, or database.
Stateless, scalable, self-contained
Each node is fully independent: no cluster coordination, no shared state. Scale by adding identical nodes behind a load balancer.
// POST /validate{ "address": "Hauptstr. 23a 8001 Zürich" }// Response 200 OK{ "status": "VALID", "confidence": 0.984, "corrected": true, "result": { "street": "Hauptstrasse", "house_number": "23a", "postal_code": "8001", "city": "Zürich", "city_aliases": ["Zurich"], "country": "CH" }, "flags": [ "ABBR_EXPANDED", "MULTILINGUAL_MATCH" ] }
Who uses address validation
Address validation adds value at every point where addresses are collected, stored, or acted on. Clean, standardised records from the start prevent costly errors downstream.
CRM & customer data
Validate and standardise addresses as they enter the CRM. Prevent duplicates, ensure consistent formatting, and keep customer records clean for billing, communications, and analytics.
Logistics & shipping
Catch undeliverable addresses before a shipment is dispatched. Reduce returned parcels, re-delivery costs, and the customer service burden that follows a failed delivery.
E-commerce checkout
Validate delivery addresses at checkout, before the order is confirmed. Fewer failed deliveries, fewer customer complaints, and fewer chargebacks from customers who never received their order.
Financial services & compliance
Accurate addresses are required for KYC, AML, and regulatory correspondence. Validate and standardise addresses at account opening to meet compliance requirements from day one.
Direct mail & marketing
Clean your mailing list before every campaign. Remove undeliverables, standardise formats, and ensure every piece reaches the right door — reducing waste and improving campaign ROI.
Healthcare & public sector
Accurate addresses are critical for patient records, benefit letters, and regulatory notices. A wrong address means a missed appointment, an undelivered prescription, or a compliance failure.
International by design
Optimaize Address Software is built to handle the full diversity of international address formats, conventions, and languages: from the structural detail of Austrian sub-building components to the multilingual complexity of Swiss cities to the compound street names of Germany.
Multiple languages
Recognises city name synonyms across languages: the same city under its German, French, Italian, or local name. Returns the canonical postal form in the language of your choice. Handles Unicode, accents, umlauts, and non-ASCII characters natively.
Flexible address formats
House number before or after street name. Postcode before or after city. Sub-building components like staircase, floor, and apartment number. The parser understands regional conventions and applies the right rules per country.
Trusted data sources
Regular updates from official address registries and trusted open data sources help keep validation accurate as streets, postal codes, and settlements change.
Stateless and simple to operate
Built on a proven open-source foundation, with proprietary algorithms and software developed by Optimaize. Its stateless single-node architecture keeps deployment and operations simple, so your DevOps team can run it without specialised distributed-systems expertise.
Self-contained nodes
Each node carries its own copy of address data and search indices. No cluster coordination, no shared state, no inter-node communication. Fully independent and predictable. Scales horizontally by adding identical nodes behind your load balancer.
Your cloud infrastructure
Designed to fit into your existing infrastructure without compromise. Your data never leaves your environment. Run it on your VPC, your Kubernetes cluster, your on-premise hardware.
Incremental rollout & fast rollback
Roll out releases one node at a time with health checks between waves. Every released image is retained and redeployable within minutes. No cluster-wide automation that can propagate a bad release across all nodes simultaneously.
Ready to clean your address data?
Talk to us about your requirements. We will assess your use case and recommend the right configuration.