4-year-old B2B data validation SaaS listed at $10M, or 2.1x revenue and 5.3x profit, on $4.74M annual revenue and $1.90M annual profit.

The numbers: Margin is 40%. TrustMRR shows $224K MRR, 622 active subscriptions, $3.83M in lifetime revenue, and about 500 users.

How it works: 1Lookup provides real-time phone, email, and IP validation through one API, helping businesses improve data quality, prevent fraud, and strengthen security.

What stands out: The business has reached meaningful scale since launching in January 2022.

Worth asking: How concentrated is revenue among large customers? How much revenue is recurring versus one-time, high-volume usage? Buyers should also review churn, validation-provider costs, gross margins by product, why the seller is exiting, and whether they plan to build competing data, fraud, or API tools.