Track YDH Express cross-border e-commerce parcels from China and Japan into La Poste Colissimo and Chronopost in France.

YDH Express specializes in Sino-Japan and China-to-Europe cross-border e-commerce linehaul. On European lanes into France (CDG/LGG), YDH pre-advises La Poste Colissimo (6A… / 8R…) and Chronopost barcodes so parcels enter the French domestic postal network immediately after EU IOSS clearance.

Try a live tracking number:

Barcode transition: YDH Express to La Poste Colissimo / Chronopost

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

Origin / middle-mile carrier
YDH Express (ydh)
YDH Express barcode or Colissimo 6A… number
^(YDH[A-Z0-9]+|6A\d{11})$
Origin example
YDH202609182736
Final-mile carrier
La Poste Colissimo / Chronopost (laposte)
La Poste Colissimo 13-character barcode (6A… / 8R…)
^(6A|8R|9V)\d{11}$
Final-mile example
6A12345678901
Middle-mile resolution
Remis à La Poste Colissimo après dédouanement

How the YDH Express → Colissimo handoff works

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

1. YDH origin warehouse processing
YDH Express scans the parcel at its Shanghai, Shenzhen, or Yiwu sortation center and transmits the French Colissimo pre-advice.
2. Air linehaul to Paris CDG or Liège (LGG)
The shipment flies to Europe and clears EU IOSS customs inspection.
3. La Poste Colissimo hub induction & delivery
La Poste scans the 6A… barcode at its French plate-forme industrielle courrier (PIC) and delivers to the recipient’s mailbox or Point Relais.
YDH Express query
GET /v1/track/{number}?carrier=ydh
La Poste Colissimo query
GET /v1/track/{number}?carrier=laposte
Chronopost query
GET /v1/track/{number}?carrier=chronopost

Chain YDH Express → 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 YDH Express middle-mile scans on the 92… barcode:
curl "https://api.lastscanned.com/v1/track/YDH202609182736?carrier=ydh" \
  -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/6A12345678901" \
  -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 YDH 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=ydh`, { 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"

YDH Express to La Poste Colissimo & Chronopost France Linehaul Handoff Tracking FAQ

Why does La Poste Colissimo say Votre colis va bientôt nous être confié on a YDH shipment?
La Poste displays that pre-shipment message while YDH Express is transporting the parcel from China to France and clearing EU customs. Querying ?carrier=ydh reveals the live air linehaul scans.
Can I track both the YDH number and the 6A… Colissimo number on lastscanned?
Yes. Pass ?carrier=ydh for the YDH origin timeline and query the 6A… barcode (auto-detected as laposte) for French domestic delivery.

Other carrier handoff guides

Explore cross-border last-mile barcode extraction and domestic USPS consolidator overrides across all 273 carriers.

All 273 supported carriers

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Cross-border