“Dispatch from outward office of exchange (国際交換局から発送 — Japan Post)”Normalized: in_transit (In transit)Japan Post (japanpost)USPS (usps)Royal Mail (royalmail)Canada Post (canadapost)

What Japan Post 'Dispatch from outward office of exchange' (国際交換局から発送) means.

Japan Post has cleared your EMS, ePacket, or Registered Airmail parcel through Japanese export customs at Tokyo International Post Office, Osaka International, or Chubu, and sealed it into an outbound postal dispatch bag for international air uplift.

Try a live tracking number:

What is happening in the supply chain

Under Universal Postal Union (UPU) S10 standards, every country operates designated Offices of Exchange (OE). In Japan, international mail routes to Tokyo INT (138-8799), Kawasaki Higashi (for surface/air), Osaka INT, or Fukuoka INT. Once export customs clears the item and it is manifested to an outbound flight, Japan Post logs Dispatch from outward office of exchange (国際交換局から発送) and transmits an electronic PREDES message to the destination postal operator (such as USPS, Royal Mail, or Canada Post).

92… USPS Awaiting Item Checker →
Verbatim carrier scan
“Dispatch from outward office of exchange (国際交換局から発送 — Japan Post)”
Normalized API status
in_transit
Typical time to delivery
3–7 business days (EMS) or 7–14 days (Airmail)
Recommended recipient action
Your package has cleared Japanese export processing and is waiting for or flying on an international aircraft. The next scan will log when it arrives at your country’s inward office of exchange (e.g., ISC New York, ISC Los Angeles, or ISC Chicago).
Developer / WISMO action
Query GET /v1/track/{S10_number}?carrier=japanpost and also query the destination post (?carrier=usps) using the exact same 13-character S10 barcode (e.g., EN...JP or RN...JP).

How lastscanned normalizes this scan

Instead of maintaining brittle regexes for every carrier's raw scan phrasing across 273 carriers, query GET /v1/track/{number} or connect https://mcp.lastscanned.com.

Get an API keyJapan Post API docs

Synchronous GET request

curl "https://api.lastscanned.com/v1/track/EN123456789JP" \
  -H "Authorization: Bearer lsk_live_YOUR_API_KEY"

Normalized JSON response

{
  "carrier": "japanpost",
  "trackingNumber": "EN123456789JP",
  "status": "in_transit",
  "statusDescription": "Dispatch from outward office of exchange (国際交換局から発送 — Japan Post)",
  "events": [
    {
      "timestamp": "2026-10-26T14:22:00Z",
      "localTime": "2026-10-26T10:22:00",
      "status": "in_transit",
      "description": "Dispatch from outward office of exchange (国際交換局から発送 — Japan Post)",
      "location": "TOKYO INT, JP"
    }
  ]
}

Frequently asked questions

Does 'Dispatch from outward office of exchange' mean my package is already on the airplane?
It means Japan Post has sealed the postal receptacle and handed it over to the airport cargo terminal for the assigned flight. Depending on flight capacity from Haneda (HND) or Narita (NRT), uplift occurs within 12–72 hours.
Can I use my Japan Post EN...JP or RN...JP tracking number on USPS?
Yes. S10 barcodes ending in JP track natively on both Japan Post (?carrier=japanpost) and USPS (?carrier=usps).

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