ISP Block Score API ·

If an entrepreneur "adopted" this product today, here's the realistic math.

Fermi summary

Land 50 proxy-provider shops at $300/mo and you're at $180k ARR - but the market has maybe 800 real buyers, your scores go stale in days, and savvy customers churn once they've reverse-engineered your signal; honest 15% shot you make it.

Market size (TAM)

$5.0M

~800 serious buyers globally (small residential proxy providers, ad-verification firms, scraping-as-a-service shops) × ~$500/mo avg API spend = ~$4.8M; capped at $5M because Tier-1 providers (Bright Data, Oxylabs) build this in-house

Year-1 ARR range

$36k - $600k

midpoint $180k

Gross margin

68%

Investment to production

$22k

Dev $9k: auth, rate-limiting, billing, SDKs, SLA-grade uptime. Data $7k: licensing IP reputation feeds (IPQS, Scamalytics, or equivalent) +

Probability of success

15%

P(reaching mid case in 12 months)

Expected take-home Y1

$-2600

probability-weighted, after investment

Go-to-market motion

Direct cold email to CTOs/founders of 500 small residential proxy providers on Crunchbase + proxy-forum communities (BlackHatWorld, ProxyWays Discord) → free-tier trial → conversion at $150-500/mo based on volume tier.

Key risks

Block-detection accuracy decays weekly: streaming platforms and anti-bot vendors (Cloudflare, DataDome) update heuristics constantly, requiring continuous data refresh that erodes margins and creates churn when the score goes stale
Target customers (proxy providers) are adversarial engineers who will reverse-engineer your scoring signals after 30 days of API logs and stop paying
The addressable market is thin: most shops needing this above ~100k IPs/day build it internally with open-source blacklists + their own fingerprinting data

Generated by the Wishdeal Factory financial-analysis agent. Numbers are honest Fermi estimates, not guarantees. Real outcomes depend on the operator. The studio is bullish on the engineering quality, agnostic on the business outcome.