4PX package tracking, and the API behind it.
4PX's cross-border parcels, the AliExpress and marketplace workhorse. One free lookup a day, no sign-up.
Also known as 4PX Worldwide Express, 4PX Express.
4PX tracking numbers
We recognize these formats from the number alone. For anything else from 4PX, add ?carrier=4px.
- 4PX
- 4PX + 13 digits + CN
- Example (format only)
- 4PX3001234567890CN
- Category
- Cross-border
- API carrier code
- 4px
4PX tracking API quickstart
One request per number, or up to 100 at once with ?numbers=a,b,c. Your agents can use the same data over MCP.
REST
curl "https://api.lastscanned.com/v1/track/4PX3001234567890CN?carrier=4px"Claude Code
claude mcp add --transport http lastscanned https://mcp.lastscanned.comThen ask
> Where is my 4PX package 4PX3001234567890CN? When will it arrive?
4PX tracking FAQ
- How do I track a 4PX package?
- Paste the tracking number into the lookup on this page. We read 4PX's own tracking data and show every scan, the current status and the delivery details. Anyone can do one lookup a day without signing up.
- Is there a 4PX tracking API?
- Yes. GET https://api.lastscanned.com/v1/track/:number?carrier=4px returns 4PX tracking as JSON, in the same shape as every other carrier lastscanned covers. Sign up for a free key with 5 lookups a day, or Pro for $4.99 a month with 1,000 numbers.
- What does a 4PX tracking number look like?
- 4PX: 4PX + 13 digits + CN. For example 4PX3001234567890CN. lastscanned recognizes these formats on its own, so ?carrier=4px is optional for them.
- Does this work for 4PX Worldwide Express and 4PX Express numbers?
- Yes. They are tracked through 4PX and come back as carrier "4px".
- Can an AI agent track 4PX packages?
- Yes. Add lastscanned as an MCP server (https://mcp.lastscanned.com) in Claude, ChatGPT, Cursor or VS Code and ask it where a 4PX parcel is.
Other carriers
Major carriers
Regional US last mile
Tracking pages are for people. This is for your code.
Every carrier shows a parcel differently. lastscanned reads them all and answers in one shape, so your app, your spreadsheet or your agent handles any carrier the same way.
| Carrier website | lastscanned API | |
|---|---|---|
| Carriers | One carrier per site | 18 carriers behind one endpoint |
| Response | A web page to read | The same JSON for every carrier |
| Volume | One number at a time | Up to 100 numbers per request |
| Agents | Copy and paste | MCP server for Claude, ChatGPT and Cursor |
| Automation | Check back by hand | Poll from your own code or workflow |
Free: 5 numbers a day with a key. Pro: $4.99 a month for 1,000 numbers, then $0.015 each.