Data APIs for lookup and enrichment, $245K MRR: one key

A business selling phone, email, IP, company, SEO, web, and audio data APIs through one integration. Its $245K MRR is verified through the payment provider's API by TrustMRR (Stripe), as of September 30, 2026.

What it actually sells

1Lookup offers “44 data products on one API key and one shared credit balance,” covering validation, enrichment, B2B prospecting, SEO, and transcription. One API key and one credit balance cover six kinds of data.

Its products include Phone Intelligence, Email Validation, IP Intelligence, Phone Spam Check, and other data tools. “Contact enrichment turns a phone number, an email or a name and address into the rest of a person's record.”

How it charges

The pages we read did not identify the product's price. Its structure centers on one API key and a shared credit balance across 44 data products, with 672 active subscriptions recorded alongside the revenue data.

Month by month

Monthly revenue as read from the payment provider by TrustMRR, in US dollars, as of September 30, 2026.

Month	Revenue (USD)
2025-10	$139,715
2025-11	$208,475
2025-12	$187,087
2026-01	$267,099
2026-02	$231,512
2026-03	$277,381
2026-04	$324,603
2026-05	$411,409
2026-06	$411,623
2026-07	$495,823
2026-08	$407,149
2026-09	$366,324

Where customers come from

The visible acquisition surfaces are free phone, email, IP, domain, social, and safety lookup tools, API documentation, an API reference, integration guides, integrations, and an affiliate program. The audience listed on the revenue-verification profile is B2B; the site also names agencies, freelancers, growing businesses, high-volume applications, and enterprises.

What stands out

The site reports “Millions Lookups processed” and validation answers in under 0.3 seconds. It also claims a 5.0 Trustpilot rating.

The product set extends beyond validation to contact enrichment, company data, SEO, web, and audio data APIs. It also includes an MCP server that lets an AI agent run lookups and an audio transcription feature.

From the official site

Starter For agencies and freelancers

Contact enrichment turns a phone number, an email or a name and address into the rest of a person's record.

Excerpts from the official website, fetched October 1, 2026.

Where it sits in the data

1Lookup's $245K MRR is higher than 100% of the 5,602 projects with payment-verified revenue in our dataset; the median across them is $150. Within the “Sales” category (202 projects) it is higher than 99% (category median $441). Snapshot: 2026-09-02 to 2026-09-30. The dataset only covers founders who chose to publish their numbers, so it leans toward businesses that work; use it for scale, not as an average.

Currency

All figures are in US dollars as published. A rough yuan or euro conversion is not applied here because prices, taxes and acquisition costs differ by country.

Could you build something like this?

In my view, demand would come from developers and technical teams that need consistent data lookups inside applications and workflows. Buyers could include agencies, freelancers, growing businesses, high-volume applications, and enterprises.

Distribution would need to come from free lookup tools, useful documentation, integration guides, and developer-focused content. The hard parts would include maintaining data quality, handling support requests, managing usage and billing, and competing with established providers; regulation would matter wherever personal data is involved.

Verdict: Hard to replicate.

One thing to take from it

The clearest product-shape lesson is consolidation: 44 data products operate through one API key and one shared credit balance, while free tools, documentation, integration guides, and an affiliate program provide visible entry points.

Sources

1Lookup official website, fetched October 1, 2026
1Lookup pricing page, fetched October 1, 2026
TrustMRR: revenue verified through the payment provider's API by TrustMRR (Stripe), as of September 30, 2026

Revenue, team and start-cost figures are what the founder reported at the interview date, not current figures and not a prediction of what you will earn. Product and pricing facts come from the business's own website as checked on 30 September 2026. Method & sources · Disclosure