Interasia
Container Tracking
Interasia has a single registered container prefix and no SCAC anyone can agree on, so it pays to know what is actually verifiable. Enter a container, bill of lading or booking number for the latest milestones.
What a Interasia tracking number looks like
The lookup above accepts any of these in the same field. If one returns nothing, try another. Carriers release milestone data against different identifiers at different stages.
Container number
4 letters + 7 digits (11 characters)
IAAU1234567Standard ISO 6346. IAAU is the only prefix registered to Interasia, so most boxes on an Interasia booking will be leased and carry another code.
Bill of lading number
Alphanumeric, no publicly documented format
IALHKG123456Interasia publishes no specification. Enter the number exactly as printed on your document.
Booking number
Alphanumeric
12345678Accepted in the same field as container and B/L numbers.
Interasia container prefixes
These owner codes are registered to Interasia Lines, Ltd. in the BIC ISO 6346 register. Containers moving under a Interasia booking may also carry a leasing company's prefix. A leased box is still your shipment, the prefix just does not identify the carrier.
How to track a Interasia shipment
- 1
Find your container or BL number
It is printed on your bill of lading, your booking confirmation, or on the container door itself. Any of the three works in the search box above.
- 2
Interasia is already selected
Because you are on the Interasia page, the carrier dropdown is filled in for you. If you actually need a different line, change it. The selection is not locked.
- 3
Enter the number and press Track
Type it exactly as printed. Spaces and dashes are fine, but a mistyped letter will return nothing, since the check digit at the end only validates against the correct serial.
- 4
Read the milestone timeline
You will see terminal and vessel events from origin gate-in through to empty return, plus the vessel and voyage your box is actually on.
You can also check Interasia's own portal directly at Interasia cargo tracking . The advantage of tracking here is keeping several carriers on one screen instead of one portal per line.
About Interasia
Interasia Lines was founded in Tokyo in 1967 under the name Nichinankaiun and took its current name in 1969. Despite the Japanese origin it operates as an intra-Asia specialist across Chinese, Southeast Asian and Japanese trades, and it is affiliated with Wan Hai Lines.
Alphaliner puts it at 27 vessels and 77,985 TEU as of April 2026, small by global standards, but the relevant comparison is with other regional operators rather than with the deep-sea majors. Interasia typically handles one leg of a longer journey, feeding boxes into or out of the hub ports where the alliance services call.
It is also a carrier where remarkably little is verifiable. Its headquarters is reported differently by trade press and by the container register, three different SCAC codes circulate, and a container prefix widely attributed to it does not exist. Where we could not confirm something, this page leaves it out rather than guessing.
Interasia tracking: what to check first
IALU is not a real prefix. Several tracking sites list it for Interasia. Query it against the BIC owner-code register and there is nothing there. It is not registered to anyone. The only Interasia code is IAAU. If your paperwork appears to show IALU, re-read it; it is likely IAAU or a lessor’s code.
Most Interasia boxes are leased. With one registered prefix, the carrier owns very few containers outright. A Triton, CAI or Beacon prefix on an Interasia booking is entirely normal and does not mean you have the wrong carrier.
The carrier’s own site is difficult to reach programmatically. Interasia’s tracking form sits behind a site that redirects automated requests in a loop, so saved deep links and automated checks tend to fail even when the service itself is fine.
Because Interasia is a feeder rather than a deep-sea line, a Pakistan-bound shipment will hand off to another carrier at a transshipment hub. A timeline that stops at hub discharge is usually that hand-off rather than a stalled container. The onward leg is being reported by whoever operates it.
What each Interasia tracking status means
Ocean carriers share the same terminal and vessel event vocabulary, so these milestones read the same whichever line you are tracking.
Gate in
The container passed through the terminal gate at the origin port and is now in the terminal's custody, waiting to be loaded.
Loaded on vessel
The box was lifted onto the ship. This is the milestone that fixes your shipment to a specific vessel and voyage number.
Vessel departure
The ship has sailed from the origin port. Transit time is measured from here, and it is the point most ETA calculations are anchored to.
Transshipment
The container was discharged at an intermediate hub and will be reloaded onto a second vessel. Most delays originate here rather than at origin.
Discharged
The container came off the ship at the destination port. Free time and demurrage clocks typically start from this event.
Gate out
The container left the terminal on a truck or rail wagon. Once this fires, the terminal's storage charges stop and the haulier's clock starts.
Empty return
The unpacked container was returned to the carrier's nominated depot. This closes the shipment and stops any per-diem detention charges.
Where Interasia shipments usually move
Interasia tracking questions
Which container prefix does Interasia use?
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IAAU, and only IAAU. It is the sole code registered to Interasia in the BIC ISO 6346 register. Because the carrier owns so few containers, most boxes moving on Interasia bookings are leased and carry a leasing company's prefix instead.
Is IALU an Interasia prefix?
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No. IALU is not registered in the BIC container owner-code register at all. It appears on several aggregator lists for Interasia, presumably because it looks like an abbreviation of the name, but it is not a valid container prefix and will never resolve.
What is Interasia's SCAC code?
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We do not publish one. Three different values circulate for Interasia and no authoritative source settles it. NMFTA's SCAC register is paywalled and the published lists disagree. Rather than pick one at random, we leave the field out.
Where is Interasia based?
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This is genuinely ambiguous, so we do not state a headquarters. Trade press places Interasia in Taipei, while the entity registered as the container owner with BIC is in Singapore. Both are real; which one you call the headquarters depends on which entity you mean.
Is Interasia related to Wan Hai?
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Yes, Interasia is an affiliated intra-Asia operator. They remain separate carriers with separate prefixes and separate booking systems, so an Interasia number will not resolve as Wan Hai, but the two names appear together on connected routings.
How large is Interasia?
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27 vessels and 77,985 TEU as of April 2026, per Alphaliner. It is a regional intra-Asia operator rather than a deep-sea carrier, so it usually appears as one leg of a longer journey rather than as the carrier for a whole shipment.
Does Maalbardaar charge for Interasia tracking?
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No. Tracking is included with a free Maalbardaar account, which also lets you keep shipments across several carriers on one dashboard instead of checking each carrier's portal separately.
Every carrier on one dashboard.
Stop checking Interasia's portal separately from everyone else's. Track your whole book of shipments in one place.
Not shipping with Interasia?
Track any of these lines from the same dashboard, or use the general tracking page if your carrier is not listed.
Ocean carriers
Air cargo
Maalbardaar is an independent logistics technology platform and is not affiliated with, endorsed by, or sponsored by Interasia Lines, Ltd.. "Interasia" and all related marks are trademarks of their respective owners and are used here for identification purposes only. For official information, visit the carrier's own website . Carrier data sources: IAAU confirmed against the BIC ISO 6346 register as the only Interasia code; IALU, widely listed, is not registered at all. Founded in Tokyo in 1967 as Nichinankaiun and renamed in 1969. Fleet of 27 vessels and 77,985 TEU per Alphaliner, April 2026. HQ omitted: trade press says Taipei while the BIC registrant is the Singapore entity, and the two could not be reconciled. SCAC omitted: three conflicting values are in circulation.