Track 4PX cross-border shipments into France through Roissy customs and La Poste Colissimo or Chronopost final-mile delivery.

4PX Worldwide Express operates direct air linehaul from Shenzhen and Hong Kong into Paris Charles de Gaulle and Liege, pre-labeling French parcels with La Poste Colissimo (`6A…` / `8R…` / `8G…`) or Chronopost barcodes.

Try a live tracking number:

Barcode transition: 4PX Worldwide Express to La Poste Colissimo

Domestic 4PX Worldwide Express parcels keep the same 92… / 420… barcode from pickup to mailbox. Pass ?carrier=4px to inspect middle-mile sort scans before USPS induction.

Origin / middle-mile carrier
4PX Worldwide Express (4px)
4PX Waybill or Pre-Assigned Colissimo 6A… / 8R…
^(4PX[0-9A-Z]{12,16}|[68][A-Z]\d{11})$
Origin example
6A23456789012
Final-mile carrier
La Poste Colissimo (laposte)
La Poste Colissimo 13-character Code (6A… / 8R…)
^[68][A-Z]\d{11}$
Final-mile example
6A23456789012
Middle-mile resolution
Votre colis est en cours d'acheminement — Colissimo (?carrier=laposte)

How the 4PX → Colissimo handoff works

Follow the parcel across both networks without waiting on asynchronous webhooks or losing visibility at the handoff boundary.

1. 4PX Shenzhen sort & Colissimo pre-advice
4PX prints a native La Poste Colissimo 6A… barcode on the parcel in China while La Poste displays 'Votre colis va bientôt nous être confié'.
2. Air export & French customs clearance
4PX flies the shipment to Paris CDG or Liege, clears EU VAT via IOSS, and trucks the pallets to La Poste's sorting hub.
3. La Poste Colissimo delivery
La Poste scans the 6A… barcode at Chilly-Mazarin / Moissy-Cramayel and delivers within 24–48 hours.
4PX origin query
GET /v1/track/6A23456789012?carrier=4px
La Poste query
GET /v1/track/6A23456789012?carrier=laposte
Consolidator override
Pass ?carrier=4px on a 6A… number to see Chinese warehouse and flight scans before La Poste receives the parcel

Chain 4PX → Colissimo in code or MCP

Resolve both legs synchronously in TypeScript, curl, or your AI support agent via Streamable HTTP MCP.

REST (Synchronous GET)

# 1. Query 4PX Worldwide Express middle-mile scans on the 92… barcode:
curl "https://api.lastscanned.com/v1/track/6A23456789012?carrier=4px" \
  -H "Authorization: Bearer lsk_live_YOUR_API_KEY"

# 2. Query USPS final-mile scans on the same barcode:
curl "https://api.lastscanned.com/v1/track/6A23456789012" \
  -H "Authorization: Bearer lsk_live_YOUR_API_KEY"

TypeScript (Automatic Handoff Chaining)

const headers = { Authorization: `Bearer ${process.env.LASTSCANNED_API_KEY}` };
const res = await fetch(`https://api.lastscanned.com/v1/track/${encodeURIComponent(number)}`, { headers });
let pkg = await res.json();

// If USPS is still waiting on the consolidator parcel, query 4PX Worldwide Express middle-mile hubs:
if (pkg.carrier === "usps" && pkg.status === "label_created" && /^(420\d{5})?9[2345]/.test(number)) {
  const mid = await fetch(`https://api.lastscanned.com/v1/track/${encodeURIComponent(number)}?carrier=4px`, { headers });
  if (mid.ok) pkg = await mid.json();
}

Remote MCP (Claude Code / Cursor / ChatGPT)

claude mcp add --transport http lastscanned https://mcp.lastscanned.com \
  --header "Authorization: Bearer lsk_live_YOUR_API_KEY"

4PX Worldwide Express to La Poste Colissimo & Chronopost France Handoff FAQ

Why does La Poste say 'Votre colis va bientôt nous être confié' for a week on my 4PX order?
Because the 6A… Colissimo barcode was applied in China before the flight to France. Querying ?carrier=4px on that exact same 6A… number shows the live Chinese warehouse and airport scans.
How long does 4PX take to deliver to France after landing at Roissy?
Once customs clearance completes and La Poste scans the parcel at its national hub, Colissimo delivers in 1 to 2 working days.

Other carrier handoff guides

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