Track JS Express (Jisu) cross-border shipments from China into USPS, UniUni, and GOFO Express in the United States.

JS Express (Jisu International Logistics) handles cross-border e-commerce air linehaul from South and East China into US gateways, pre-labeling packages with USPS (`926129…` / `920019…`), UniUni (`UUS…`), or GOFO Express (`GF…`) tracking numbers.

Try a live tracking number:

Barcode transition: JS Express (Jisu International) to USPS / UniUni / GOFO

Domestic JS Express (Jisu International) parcels keep the same 92… / 420… barcode from pickup to mailbox. Pass ?carrier=usps to inspect middle-mile sort scans before USPS induction.

Origin / middle-mile carrier
JS Express (Jisu International) (usps)
JS Express JS… / Pre-Allocated USPS 92…
^(JS[A-Z0-9]{10,16}|92\d{20,24}|UUS[A-Z0-9]{10,16})$
Origin example
9261290312833844954982
Final-mile carrier
USPS / UniUni / GOFO (usps)
USPS 92… / UniUni UUS… / GOFO GF…
^(92\d{20,24}|UUS[A-Z0-9]{10,16}|GF\d{12,15})$
Final-mile example
9261290312833844954982
Middle-mile resolution
Released from customs — inducted into USPS regional facility

How the JS Express → USPS handoff works

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

1. JS Express origin sort & label allocation
JS Express receives the parcel in China and applies the US domestic last-mile barcode.
2. Air flight & US CBP customs release
The consolidated air manifest clears customs at Los Angeles, Chicago, or New York.
3. USPS or regional courier delivery
USPS, UniUni, or GOFO scans the parcel and completes residential delivery.
USPS query
GET /v1/track/9261290312833844954982?carrier=usps
UniUni query
GET /v1/track/{number}?carrier=uniuni
GOFO query
GET /v1/track/{number}?carrier=gofo

Chain JS Express → USPS 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 JS Express (Jisu International) middle-mile scans on the 92… barcode:
curl "https://api.lastscanned.com/v1/track/9261290312833844954982?carrier=usps" \
  -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/9261290312833844954982" \
  -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 JS Express (Jisu International) 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=usps`, { 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"

JS Express / Jisu International to USPS & Regional Last-Mile Handoff FAQ

Who delivers JS Express packages in the US?
JS Express hands off cleared US parcels to USPS as well as regional couriers UniUni, GOFO Express, and SpeedX.
How long does JS Express take to deliver?
Most JS Express air shipments arrive at US addresses within 7 to 12 business days.

Other carrier handoff guides

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

All 273 supported carriers

International posts and couriers

Cross-border