How do I track an AWB number starting with 421?

Enter your full 11-digit AWB number (421-XXXXXXXX) in the tracker at the top of this page. TraceAWB will instantly open S7 Airlines's official cargo tracking page with your shipment pre-loaded.

What if my AWB prefix doesn't match any airline?

If your AWB prefix does not match a known airline, it may be a House AWB (HAWB) issued by a freight forwarder rather than the actual airline. For tracking on the airline's official portal, you need the Master AWB (MAWB), which your freight forwarder can provide.

Prefix Decoded

What is AWB Prefix 421?

Q: What airline has AWB prefix 421?

AWB prefix 421 belongs to S7 Airlines (IATA code S7), based in Russian Federation. All air waybills issued by S7 Airlines start with 421-XXXXXXXX.

Q: How many digits is an IATA AWB prefix?

An IATA AWB prefix is always exactly 3 digits (000–999). It is the first part of an 11-digit air waybill number in the format XXX-XXXXXXXX. Prefix 421 belongs to S7 Airlines.

Q: Is 421 the only AWB prefix for S7 Airlines?

Yes, 421 is the IATA-assigned AWB prefix exclusively for S7 Airlines. Each IATA member airline has a unique 3-digit prefix. S7 Airlines's prefix is 421, so all their air waybills follow the 421-XXXXXXXX format.

AWB prefix 421 is the IATA-assigned airline identification code for S7 Airlines (S7), based in Russian Federation. Every air waybill issued by S7 Airlines begins with the digits 421, followed by a hyphen and an 8-digit shipment serial number — giving a total of 11 digits in the format 421-XXXXXXXX.

When you see a cargo AWB beginning with 421, you can be certain it was issued by S7 Airlines or by a freight forwarder acting on their behalf. S7 Airlines operates as a Scheduled Cargo & Passenger Network, with its primary hub at Sheremetyevo International (SVO). Typical air transit times range from 1 to 3 business days depending on origin and destination.

The IATA prefix system assigns a unique 3-digit code to every member airline, ensuring there is no ambiguity in airway bill identification across the global air freight network. Prefix 421 is exclusively reserved for S7 Airlines and cannot be used by any other carrier. For detailed shipment status, use the tracker above to reach S7 Airlines's official tracking portal instantly.

Prefix 421 — Quick Reference

Prefix Number421

Airline

S7 Airlines

IATA CodeS7

ICAO CodeSBI

CountryRussian Federation

HubSheremetyevo International (SVO)

AWB Format421-XXXXXXXX

Cargo TypeScheduled Cargo & Passenger Network

Transit Time1–3 days

Official SiteVisit

Format Guide

How to Read an AWB Starting with 421

The 11-digit IATA airway bill number is split into two parts separated by a hyphen. The first three digits (421) tell you instantly which airline issued it.

421

Airline Prefix
→ S7 Airlines

-

12345678

Shipment Serial
(8 digits)

421 always identifies S7 Airlines as the issuing carrier. The 8-digit serial is unique to each shipment. Together: 421-12345678 is a complete, valid S7 Airlines airway bill.

Prefix Lookup

Look Up Any AWB Prefix

Have a different AWB prefix? Enter any 3-digit IATA prefix below to identify the airline and get instant tracking.

Enter Any AWB Prefix

Type the first 3 digits of your airway bill number

Prefix Range 400–499

AWB Prefixes Near 421

Not sure you have the right prefix? Browse nearby IATA AWB prefixes to find the correct airline for your air waybill.

Prefix	Airline	Country	IATA	Track
413	Somon Air	Tajikistan	SZ	View
415	PopulAir	Sweden	HP	View
416	National Airlines	United States	N8	View
421 You are here	S7 Airlines	Russian Federation	S7	Track
433	Privilege Style	Spain	P6	View
441	Link Airways	Australia	FC	View
444	ULS Airlines Cargo	Türkiye	GO*	View
445	Paranair	Paraguay	ZP	View

Browse by Range

All AWB Prefix Ranges

IATA assigns AWB prefixes across the full 000–999 range. Browse all prefixes by range to find any airline.

000–099 100–199 200–299 300–399 400–499 500–599 600–699 700–799 800–899 900–999

← See the full AWB prefix index (all 440+ airlines)

FAQ

Frequently Asked Questions about AWB Prefix 421

What airline has AWB prefix 421? +

AWB prefix 421 belongs to S7 Airlines (IATA code S7, ICAO code SBI), based in Russian Federation. All air waybills with this prefix follow the format 421-XXXXXXXX and were issued by S7 Airlines or by a freight forwarder on their behalf.

How do I track an AWB starting with 421? +

Enter your full 11-digit AWB number — 421-XXXXXXXX — into the tracker at the top of this page and click "Track". TraceAWB identifies prefix 421 as S7 Airlines and opens their official cargo tracking portal with your shipment pre-loaded.

What does AWB prefix 421 mean? +

In the IATA air cargo numbering system, the first three digits of any air waybill identify the issuing airline. Prefix 421 is exclusively assigned to S7 Airlines. The remaining eight digits (after the hyphen) are the unique shipment serial number assigned to your individual cargo. The two parts together form a globally unique shipment identifier: 421-XXXXXXXX.

How many digits is an IATA AWB prefix? +

An IATA AWB prefix is always exactly 3 digits (ranging from 000 to 999). It forms the first part of an 11-digit air waybill number in the standard format XXX-XXXXXXXX. Prefix 421 identifies S7 Airlines. IATA maintains a registry of all assigned prefixes and each is unique to one airline.

What is the difference between a Master AWB and a House AWB? +

A Master Air Waybill (MAWB) is issued by the airline — in this case S7 Airlines — directly to the freight forwarder. It begins with the airline's prefix: 421. A House Air Waybill (HAWB) is issued by the freight forwarder to the individual shipper and uses the forwarder's own numbering system. For tracking on S7 Airlines's official portal, you need the MAWB starting with 421-. If you only have a HAWB, ask your freight forwarder for the corresponding MAWB.

Is 421 the only AWB prefix for S7 Airlines? +

Yes. 421 is the single IATA-assigned AWB prefix exclusively for S7 Airlines. IATA assigns one unique 3-digit prefix per airline. No other carrier uses prefix 421, so whenever you see an airway bill starting with 421, it is guaranteed to be a S7 Airlines shipment.

What if my 421 AWB shows no tracking status? +

Tracking status for a 421 AWB may not appear immediately after booking. It becomes visible only after the cargo has been physically accepted at a S7 Airlines cargo terminal and the AWB has been activated in their system. This typically takes 2–8 hours after acceptance. If your AWB still shows no status after 12 hours, contact S7 Airlines cargo customer service or your freight forwarder directly.