1Lookup
The #1 tool for validating phone, email and IP data in real time. All through one powerful API.
SaaS · Founded 2022 · United States
- SaaS
- Dev Tools
- Analytics
- Marketing
- Sales
Can you vibecode this?
Kinda
The core validation endpoints ship fast — phone, email, IP are standard API-wrapping work. But 43 data products with real-time fraud scoring, daily FCC/carrier ingestion, skip tracing, social scraping, and audio transcription is months of surface area before anyone pays meaningfully.
The business
Total revenueEstimated from public sources and the business’s own reporting, not independently verified.
$4.9M+
Verified recently
Monthly revenueEstimated from public sources and the business’s own reporting, not independently verified.
$400K+/mo
→ Steady · 60-day average
Peak month
~$500K
Best single month
Growth
~2.5×
Early months vs recent
Profit margin
40%
For owners
Own 1Lookup? List it for sale.
Founders read this page looking for a business to build like your $400K+/mo one — some would rather buy one that already works. They skip the line, you get a clean exit. $25 one-time, no commission.
Why it works
Value proposition
43 data products behind one API key and one credit balance.
Problem
Businesses waste money on bad, outdated contact and IP data.
Audience
Call centers, marketing agencies and e-commerce businesses needing data validation.
Business model
Pay-as-you-go credits bought upfront; a 7-day free trial to start.
Can you vibecode this?
Kinda
The core validation endpoints ship fast — phone, email, IP are standard API-wrapping work. But 43 data products with real-time fraud scoring, daily FCC/carrier ingestion, skip tracing, social scraping, and audio transcription is months of surface area before anyone pays meaningfully.
Moat
- Proprietary data
- Ecosystem embedding
- Switching costs
Why people pay 1Lookup
1Lookup pulls phone and carrier data daily directly from FCC and carrier sources, which a new copy cannot replicate on day one. Customers already embedded across 43 endpoints on one API key, with credits spent and integrations wired into Pipedrive, Salesforce, and dialers, face real friction to leave.
Product complexity
ModerateA multi-endpoint API covering validation, enrichment, social, SEO and transcription is substantial but standard web-app work.
Data
HighCore accuracy depends on direct FCC and carrier data feeds that require established data-provider relationships.
Integrations & infrastructure
ModerateConnections to Twilio, HubSpot, Salesforce and social platforms run through their public APIs.
Human operations
LowThe product is fully API-driven; no human delivery is needed to fulfill a lookup.
Regulation / hardware
ModerateSkip tracing and DNC registry access require FCRA compliance and carrier data agreements.
Build this business
Use the build specification below with any AI coding tool, or build it directly with Leapd.
Build This with Leapd →Leapd builds
- API dashboard with 43-endpoint catalog, credit wallet and usage reporting
- Pay-as-you-go credit purchases with Stripe
- Twilio, HubSpot and Salesforce connections
- A landing page
Leapd runs
- Cold email outreach to potential customers
- Meta ads
- LinkedIn and X posts
- SEO and AI-search visibility
- A daily report of what shipped
Opportunity check
- Passes: Proven market: $400K+/mo already paid for it
- Passes: Proven model: Pay-as-you-go universal credits; one balance covers every product, 40% margin
- Passes: Proven need: Businesses need clean contact data constantly
- Partly: Buildable: Leapd builds the product; the rest is months of work, or an approval you hold
Build a pay-as-you-go data validation and enrichment API platform sold on a universal credit system.
Product:
- Accounts with API key management, usage dashboard and credit balance display
- 43-endpoint API catalog covering phone validation, email validation, IP intelligence, enrichment, B2B prospecting, social data, SEO metrics and audio transcription
- Batch upload via CSV for bulk validation jobs
- MCP server endpoint so AI agents can call lookups via OAuth 2.1 without a pasted API key
- Real-time fraud scoring (0-100) returned on every phone, email and IP validation response
- 7-day free trial with live API access on signup, no setup fees or minimums
- API documentation covering all endpoints, response shapes and credit costs per lookup
Billing:
- Universal credit packs purchased on demand via Stripe; each product type deducts a fixed credit cost per successful lookup.
Integrations:
- Twilio, HubSpot and Salesforce connected through their APIs using the customer's own credentials.
Data:
- Phone carrier and line-type data from FCC and carrier sources via their APIs
- Social platform data from Instagram, TikTok, YouTube, X, Facebook, LinkedIn, Threads, Reddit, Pinterest, Bluesky, Twitch, Snapchat and Truth Social via their public APIs
- SEO and domain intelligence from third-party SEO data providers via their APIs
Business details
- Founded
January 2022
4 years in business
- Country
United States
- Audience
B2BSells to businesses
- Tech stack
- Domain ratingStrength of the website's backlink profile, from 0 to 100.
25 / 100
050100
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Questions
How much revenue does 1Lookup make?
1Lookup has made $4.9M+ in revenue to date and brings in $400K+/mo, with its best month around $500K.
How does 1Lookup make money?
1Lookup sells per-lookup API access across 43 data products, charged by consuming universal credits purchased through Stripe.
Is 1Lookup profitable?
Yes. 1Lookup reports a 40% profit margin.
Is 1Lookup growing?
Revenue is holding steady over the last 3 months. Since its early months, monthly revenue has grown about 2.5×.
Can you vibecode a business like 1Lookup?
Kinda, with Leapd. It builds the product, then helps you find customers with outreach, ads and SEO. See the build spec →
Ready to build it?
The market is proven. The opportunity is real. Build your version with Leapd.
Build This with Leapd →Founder interest
simple and high margin business - but there are many players and quality of service is vey important
20 days ago