International Tracking Code Mockup

AliExpress tracking codes: carriers, formats and customs

AliExpress is the cross-border B2C/B2B marketplace launched in 2010 by the Alibaba Group. Unlike a single carrier, it routes parcels through dozens of logistics partners, so a "tracking code" can take very different shapes depending on the shipping method picked at checkout. The most common families are the UPU S10 format used by national post offices (same 13-character pattern as Brazilian Correios, e.g. LP123456789CN with a trailing CN country suffix for AliExpress Standard Shipping) and Cainiao's own numbering, which uses prefixes like YT... or CNAOC.... Cainiao is Alibaba's global logistics network — conceptually similar to Amazon FBA, but built on a partner model.

Other carriers you will see are AliExpress Premium Shipping (faster UPU-style format), JT Express (strong in Indonesia and SE Asia), China Post, and EMS (Express Mail Service — also UPU S10). To track across all of them, use cainiao.com (official Alibaba portal), 17track.net (aggregator covering 1000+ carriers), parcelapp.com or packageradar.

Delivery time and Brazilian customs

Typical Brazil delivery time is 30 to 90 days on Standard Shipping and 15 to 25 days on Premium. Since January 2024 the Programa Remessa Conforme (Receita Federal) applies: orders up to US$ 50 are exempt from the 60% federal import tax but still pay ICMS at 17%; orders above US$ 50 pay both 60% IR + ICMS. Compliant sellers like AliExpress collect the tax at checkout, avoiding the dreaded "garra" hold at customs.

Returns and consumer rights

AliExpress offers a 90-day buyer protection window — far longer than the 7-day right of withdrawal in Brazilian CDC for online purchases. Disputes are opened in the app and resolved through Alibaba mediation, which is one of the platform's main competitive moats over smaller marketplaces.

When to use mock tracking codes

Generated codes look real but are not registered in any carrier system. Typical mock use cases: designing B2B logistics dashboards, integration testing against carrier APIs (17track, Cainiao, ParcelApp), fixture data for ERP / WMS staging, QA of email/SMS templates that embed tracking links.

FAQ

Does the tool generate a real tracking code I can look up? No. The format is syntactically correct for the chosen carrier (UPU S10, Cainiao, JT, etc.), but the code is not registered. Looking it up on 17track or cainiao.com returns "not found".

Will 17track and similar aggregators accept the format? Yes — aggregators parse the shape and route to the right carrier, so they will try to look it up. They just will not find a parcel behind it.

What is the average AliExpress delivery time to Brazil? Around 30-60 days on Standard, 15-25 on Premium. Free shipping items tend to use the slowest carriers.

Why are there so many tracking formats? Because AliExpress acts as a broker over a network of regional carriers (Cainiao, JT, China Post, EMS, local post offices). Each carrier has its own numbering scheme; only the ones that joined UPU follow the S10 standard.