Find the rightpost code toolfor the job.
From foreign addresses and labels to batch checks, see how PostcodeDog differs from the tools you already know.
PostcodeDogPostcodeDog vs the tools you know
Each page focuses on the workflow, not a feature checklist.
Youbianku
Compare PostcodeDog and Youbianku for lookup cost, audience, input, batch and developer access.
USPS ZIP Code Lookup
Compare PostcodeDog and USPS ZIP Code Lookup for coverage, input, formats, batch and developer access.
Postcodes.io
Compare PostcodeDog and Postcodes.io for coverage, interface, input, batch and languages.
Zippopotam.us
Compare PostcodeDog and Zippopotam.us for form, countries, input, batch and languages.
GeoNames
Compare PostcodeDog and GeoNames for starting point, input, batch, workflow and AI agents.
Melissa Lookups
Compare PostcodeDog and Melissa Lookups for scope, access, batch, developer access and languages.
Royal Mail Postcode Finder
Compare PostcodeDog and Royal Mail Postcode Finder for coverage, input, formats, batch and AI agents.
Japan Post Postal Code Search
Compare PostcodeDog and Japan Post Postal Code Search for coverage, input, formats, languages and batch and agents.
ZIP-Codes.com
Compare PostcodeDog and ZIP-Codes.com for coverage, access, form, batch and languages.
IP138 邮编查询
Compare PostcodeDog and IP138 邮编查询 for coverage, focus, input, batch and languages.
Zipcodebase
Compare PostcodeDog and Zipcodebase for form, access, input, batch and AI agents.
GeoPostcodes
Compare PostcodeDog and GeoPostcodes for form, access, input, batch and AI agents.
Smarty
Compare PostcodeDog and Smarty for scope, access, batch, MCP and languages.
Google Maps
Compare PostcodeDog and Google Maps for best-fit question, input, batch, developer access and languages.
NowMsg
Compare PostcodeDog and NowMsg for coverage, input, batch, developer and workflow.
PostCodeBase
Compare PostcodeDog and PostCodeBase for form, access, input, batch and AI agents.
World Postal Code
Compare PostcodeDog and World Postal Code for coverage, input, batch, developer and workflow.
UnitedStatesZipCodes.org
Compare PostcodeDog and UnitedStatesZipCodes.org for coverage, input, batch, developer and workflow.
邮编网
Compare PostcodeDog and 邮编网 for coverage, input, batch, developer and workflow.
911查询
Compare PostcodeDog and 911查询 for coverage, input, batch, developer and workflow.
Australia Post
Compare PostcodeDog and Australia Post for coverage, input, formats, batch and AI agents.
Deutsche Post
Compare PostcodeDog and Deutsche Post for coverage, input, formats, batch and AI agents.
La Poste
Compare PostcodeDog and La Poste for coverage, input, formats, batch and AI agents.
PostNL
Compare PostcodeDog and PostNL for coverage, input, formats, batch and AI agents.
NZ Post
Compare PostcodeDog and NZ Post for coverage, input, formats, batch and AI agents.
Swiss Post
Compare PostcodeDog and Swiss Post for coverage, input, formats, batch and AI agents.
Poste Italiane
Compare PostcodeDog and Poste Italiane for coverage, input, formats, batch and AI agents.
Correos
Compare PostcodeDog and Correos for coverage, input, formats, batch and AI agents.
Loqate
Compare PostcodeDog and Loqate for scope, access, batch, MCP and languages.
Postcoder
Compare PostcodeDog and Postcoder for form, access, input, batch and AI agents.
Ideal Postcodes
Compare PostcodeDog and Ideal Postcodes for form, access, input, batch and AI agents.
Postcode.nl
Compare PostcodeDog and Postcode.nl for form, access, input, batch and AI agents.
ZipCodeAPI
Compare PostcodeDog and ZipCodeAPI for form, access, input, batch and AI agents.
Mapbox
Compare PostcodeDog and Mapbox for best-fit question, input, batch, developer and languages.
OpenCage
Compare PostcodeDog and OpenCage for form, access, input, batch and AI agents.
Nominatim
Compare PostcodeDog and Nominatim for best-fit question, input, batch, developer and languages.
HERE
Compare PostcodeDog and HERE for best-fit question, input, batch, developer and languages.
TomTom
Compare PostcodeDog and TomTom for best-fit question, input, batch, developer and languages.
Apple Maps
Compare PostcodeDog and Apple Maps for best-fit question, input, batch, developer and languages.
Experian
Compare PostcodeDog and Experian for scope, access, batch, MCP and languages.
GBG
Compare PostcodeDog and GBG for scope, access, batch, MCP and languages.
PostcodesDB
Compare PostcodeDog and PostcodesDB for form, access, input, batch and AI agents.
Postcodes4u
Compare PostcodeDog and Postcodes4u for coverage, input, batch, developer and workflow.
ZipInfo
Compare PostcodeDog and ZipInfo for coverage, input, batch, developer and workflow.
No comparison matches that search. Clear it to see every comparison.
One lookup box for the messy, multi-country part of the job.
Most post code tools are built around one country or one data product. PostcodeDog is built around the address in front of you.
Any format in one box
Paste a full address, a city or a code. Country and format are detected, so nobody has to remember whether Japan uses seven digits or the UK uses letters.
82 countries in one workflow
The same lookup handles US ZIP, UK outcode, German PLZ, Japanese 〒 and more, with coverage notes for each country.
Answers next to the task
Amazon orders, USPS labels and 4PX warehouses all have their own pages, so the lookup sits where the address is actually filled.
Open for people and agents
A free JSON API and an MCP server, with no key. People use the box; agents call the same lookup.
Start with the workflow you already have.
The same data is reachable from a browser, a spreadsheet or an AI client.
Filling foreign addresses every day
Start with the lookup. Paste the address, confirm the place and format, then move on to the label.
Open the lookup 02Clearing a label queue
Use the batch page: one column in, up to 50 rows checked, then CSV out with valid, ambiguous and missing statuses.
Open batch check 03Building checkout or an agent
Call the free JSON API from your code, or connect the MCP server to Claude, Cursor, Codex or your own agent.
Connect MCPIs PostcodeDog free?
Yes. Lookups, batch checks, the JSON API and the MCP server are free and need no account.
Does PostcodeDog replace the tools on this page?
It can sit alongside them. Use the official tool when you need that country’s own mailing rules; use PostcodeDog when the address is foreign, multi-country or headed for a label.
Which countries are covered?
Eighty-two countries have postal data today. Coverage depth varies, and every country page plus the data page states what is available.
Can I suggest another comparison?
Yes. Tell us which tool you want to see next and we will review it.
See the difference in one lookup.
Try 90210, SW1A or 100-0001. No signup, no credit card.