Does it handle addresses with building names and room numbers?

Yes. It automatically strips building names, room numbers, company names and notes to find the correct postal code for both road-name (도로명) and lot-number (지번) addresses.

Automatic Korean Postal Codes for Thousands of Addresses

A solution for Vietnam - Korea logistics businesses that need to fill postal codes (우편번호) for hundreds or thousands of addresses every day — fast, accurate, via Excel.

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Looking up thousands of postal codes by hand is impossible

A Vietnam - Korea logistics company processes hundreds to thousands of orders daily. Each needs an accurate Korean postal code for customs and delivery.

Done manually, staff open a lookup page, paste each address, copy the postal code, paste it back into a file… over and over. At 2,000 addresses/day, this consumes nearly a full employee's time — tiring, error-prone, and almost impossible to keep up with the volume.

⚠️ Looking up 2,000 addresses by hand takes 8–13 hours a day. A single wrong postal code can hold a shipment at customs or cause a misdelivery.

The solution: fill postal codes from addresses automatically

The Vietnam - Korea Logistics software automatically looks up Korean postal codes (우편번호) from Korean addresses. Paste a list or upload an Excel file, and it fills the 5-digit code for every address in minutes and exports a result file.

⚡

Bulk via Excel

Upload a file, get it back with postal codes in the right column. Thousands of rows in minutes.

🎯

Accurate, official data

Uses Korea's government address API (도로명주소, juso.go.kr) — standard 5-digit codes.

🏢

Handles complex addresses

Auto-strips building names, room numbers, company names; supports road-name (도로명) and lot-number (지번).

🌐

Multilingual

Vietnamese, English and Korean — for both your Vietnam team and Korean partners.

📦

Shipping file processing

Fill codes directly into your shipping file template, keeping every other column (Pro/Enterprise).

✏️

Edit & re-search

Unmatched addresses can be edited and re-searched instantly — no need to start over.

How it works — 3 steps

Enter or upload addresses

Paste a list of Korean addresses, or upload an Excel file with thousands of rows.

Automatic postal code lookup

Each address is matched against Korea's official address data to get the postal code.

Download the result file

Preview, then download the Excel with postal codes filled — ready for shipping and customs.

Far cheaper than hiring someone to do it by hand

Criteria	Manual staff	Software (Pro)
Cost per year	120–144M₫ (salary + benefits)	29M₫
Process 2,000 addresses	8–13 hours / day	Minutes
Error rate	High — fatigue, typos, omissions	Low — government data
When volume doubles	Hire more people	Unlimited, no extra cost

Save ~100M₫ per year

Pay 29M₫/year instead of 120–144M₫ in staff cost — about 75% savings. Pays for itself in 1–2 months.

Pricing & plans

Start free. Upgrade when you need to process large volumes — a fraction of the cost of a data-entry hire.

Free

Single lookup
Excel trial up to 5 addresses
Manual search

Start

Pro

35,000,000₫29,000,000₫ /year

Save ~100M₫/year vs. a hire

Unlimited lookups
Up to 2,000 addresses/run
Bulk Excel upload
Shipping file processing

Contact to register

Enterprise

Contact for pricing

Unlimited lookups
Up to 10,000 addresses/run
Multiple accounts
Priority support

Request a quote

Contact support@transflash.app for a plan that fits your order volume.

Who is it for?

Logistics, express, forwarding companies on the Vietnam – Korea route.
E-commerce businesses selling into Korea (Coupang, Qoo10, etc.).
Customs brokerage teams that need accurate postal codes.
Anyone who has to fill Korean postal codes for many addresses daily.

Frequently asked questions

How do I look up Korean postal codes for thousands of addresses?

Upload an Excel file with your address list; the software looks up the postal code for each row and exports a result file in minutes, instead of hours of manual work.

Is the data accurate?

It uses the official road-name address API of Korea's Ministry of the Interior and Safety (도로명주소, juso.go.kr) for accurate 5-digit codes.

What about addresses with building names and room numbers?

It auto-strips building names, room numbers, company names and notes to find the correct code for both road-name (도로명) and lot-number (지번) addresses.

How much does it cost?

There is a free trial. Pro is 29,000,000₫/year (was 35,000,000₫) with unlimited lookups and Excel processing — about 75% cheaper than a data-entry hire. Enterprise is contact for pricing.

Is there a Korea customs clearance tracking tool too?

Yes. The same system also tracks Korea import customs clearance by B/L number (HAWB).