sthan.io
A set of REST APIs for US addresses and IP location, made for developers. Verify a US address (corrected address, ZIP+4, county and a deliverability status), parse one line of freeform text into house number, street, unit, city, state and ZIP, autocomplete addresses as a user types, geocode addresses to latitude/longitude and back, and look up the location and network (ASN, ISP, mobile/proxy/hosting flags) of any IPv4 or IPv6 address. India PIN code, city and locality autocomplete too. Inputs can be messy: typos, abbreviations and parts out of order are fine. Every product has a free monthly tier, no credit card is needed to start, address verification starts at $12 a month for 10,000 requests (other products have their own plans), and every price is listed on the site. Annual billing costs less than monthly on every plan. Docs, OpenAPI spec, Postman collection, an MCP server and a CLI are in the documentation.
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Geocodio
Whether you have 100 or 100,000,000 addresses, we can help you. Use the data however you want with no restrictions. Geocodio will automatically add missing components to an address and can parse complex addresses such as intersections. Geocodio will automatically correct minor typos and inconsistencies. Append Congressional districts, state legislative districts, Census blocks, timezones and more to any address. Geocodio breaks addresses into standardized, individual components in a consistent format. Geocodio only supports US and Canadian addresses at this time.
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Web APIs by Melissa
4.8 out of 5 stars
(4 Ratings)
Melissa’s Web APIs provide a comprehensive solution for global data verification, cleansing, and enrichment to maintain reliable data. Verify, standardize and cleanse global identities, addresses, phones & emails, powered by AI-driven reference data. Our flexible APIs are designed for modern interfaces, including REST, JSON, and XML are easily accessible through our Developer Portal, where you can build, test, and explore integrations.
Enhance your data with geographic, demographic, and firmographic insights, along with U.S. property data for advanced enrichment. Melissa supports seamless integration with popular platforms such as Salesforce, Shopify, and more, making data management and governance simple and efficient. Whether you’re focused on data management, data validation, or leveraging our APIs into your website or mobile applications, Melissa helps you unlock the full potential of your data.
Get started with 1,000 complimentary credits! All you need is a Melissa account
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PAV API
PAV (Postal Address Verification) is a CASS Certified™ API that allows you to standardize, correct, and validate U.S. and Canadian addresses in one step. Save time, money, and resources by verifying that addresses are deliverable before mailings or packages are sent out. PAV helps businesses ensure data quality for U.S. and Canadian customers. When verifying a Canadian address, the API will only verify the city, state, and ZIP Code. The province name must be abbreviated in order for PAV to append a missing ZIP Code to a verified Canadian address. CDYNE offers trial license keys for all web services so that you may test the APIs for free. Postal Address Verification (PAV) is an API (Application Programming Interface). The API allows a business's IT department to configure the Web Service on a web page, application, or database with a few lines of code. There is no software to buy or install, no complex system to learn, and the service's data is automatically updated each month.
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