What Is Reverse ASIN Lookup? How to Find Every Keyword Your Competitor Ranks For
Do you know exactly which keywords your top competitor ranks for? Not a guess — the actual list, with search volumes and rank positions. Reverse ASIN lookup is how you find that out.
How Does Reverse ASIN Lookup Work?
Every Amazon product has a unique ASIN (Amazon Standard Identification Number). Reverse ASIN lookup takes that identifier and returns the complete list of keywords that product ranks for — both organic and sponsored.
What you get: organic rankings, sponsored positions, monthly search volume, difficulty score, and — with KeySpy — a 7-day trend sparkline for each keyword.
Where to Find a Competitor's ASIN
The ASIN is in the product URL, right after "/dp/". It's always a 10-character alphanumeric code starting with "B".
Which Competitor Should You Analyze?
Not necessarily the best-seller. Look for competitors with:
- Similar price point to your product
- Fewer than 500 reviews (they're beatable)
- Listed within the last 12 months (their strategy is current)
A competitor at your level with good sales has already figured out which keywords work. You're borrowing that research — not guessing from scratch.
Sponsored-Only Keywords: A Hidden Opportunity
When a competitor ranks for a keyword only through sponsored ads — not organically — it means the organic competition for that keyword may be low. They're paying for visibility because they can't earn it. You might be able to rank organically where they can't, giving you free traffic on a proven converting keyword.
No other tool does this in a single click. Helium 10 requires a manual export-import between Cerebro and Scribbles. KeySpy → ScribeAI transfers your keyword list instantly — no CSV, no copy-paste.