LK
LOOKUP100M
100M Cryptographic Preimages Indexed•v2026-09-12

Reverse SHA-256 Hashes to Verified Phone Numbers in 0.5ms

Ultra-low latency intelligence API covering over 100,000,000 Kenyan mobile records (CAK Safaricom allocations). Purpose-built for fintech transaction reconciliation, fraud forensics, and zero-leakage KYC verification.

~0.48ms
p99 Read Latency
100M
Pre-indexed Hashes
50K
Async Batch Jobs
Launch ConsoleGet Free API KeyAPI Docs
live-sandbox.lookup.local
Cluster:Production Node
// Ready for execution

Click “Execute Query Now” to test live sub-millisecond resolution.

Direct High-Speed Cluster ConnectionNeed bulk lookup? 500 batch →

Architecture Telemetry

Mobile Records Indexed

Kenyan Safaricom CAK allocations (254XXXXXXXXX)

p99 Execution Latency

Lock-free shard-per-core distributed data engine

Hashes Per Async Batch

Multi-threaded worker pools with webhook alerts

High-Availability SLA

Distributed clustering with automated rate limiting

Enterprise Use Cases

M-Pesa Trace: 1235926f...
MATCHED
254791000000
0.42 ms
// Zero plaintext leakage during audit transit
Fintech & Payments

M-Pesa Transaction Reconciliation

Reconcile anonymized transaction queues back to verified telecom subscriber numbers in sub-millisecond execution times without storing customer numbers in unsecured cache layers.

Try 500-item batch
Forensic Job: #job_01j7...96.4% DONE
PROCESSED48,200 / 50K
TIME ELAPSED3.8 seconds
Fraud & Forensics

High-Volume Incident Forensics

Ingest dumps of up to 50,000 anonymized SHA-256 strings during security audits or regulatory investigations. Worker threads resolve records in seconds with automatic webhook dispatch.

Explore async jobs
SHA
Identity & KYC

Deterministic Preimage Verification

Cryptographically verify phone records against the entire Safaricom 254 allocation space with zero data tampering risks and full mathematical reproducibility.

Get API credentials

Engine Architecture & Features

Sub-Millisecond Single Lookups

Direct point queries via distributed partition-aware storage clusters delivering 0.48ms response times at thousands of requests per second.

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500-Item Synchronous Batches

Execute concurrent multi-hash queries in a single HTTP request with instant JSON / CSV export and missing hash reconciliation.

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50,000-Item Async Worker Engine

Offload heavy forensic datasets to dedicated background job queues with automated webhook delivery and real-time polling progress.

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Distributed In-Memory Infrastructure

Distributed lock-free cluster engine paired with multi-layer sliding-window rate limiters and real-time telemetry counters.

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Automated Fraud & Tor Shields

Integrated IP reputation scoring, Tor exit node detection, and autonomous rate limiting preventing API scraping and denial of service.

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Deterministic Cryptography

Full SHA-256 preimage verification with support for CAK Safaricom allocations (254XXXXXXXXX) and zero plaintext leakage.

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Developer Integration

# Single hash reverse lookup in ~0.5ms
curl -X GET "http://localhost/v1/lookup/1235926f0e31f4c9cee58f172167753b2f94f7574fb89f7adfcbb8724fa0446c" \
  -H "X-API-Key: lk_live_83d3027e2aaa5c85" \
  -H "API-Version: 2026-09-12"

# Response (200 OK):
# { "number": "254791000000" }

Pricing & Plans

Transparent pricing built for scale.

Start free with 100 requests per day and up to 1,000,000 lookups per year, or upgrade to Production for KES 4,000/year with unlimited lookups.

Free

KES 0/ free forever

Immediate self-service key for developers and testing.

  • 100 requests per day (Free)
  • 1,000,000 lookups per year
  • Single reverse lookup (~0.5ms)
  • 500-item synchronous batch lookups
  • Full API Versioning support
  • Community & developer support
Get Free API Key

Production
Most Popular

KES 4,000/ year

For scaling fintechs, reconciliation, and automated KYC.

  • Unlimited lookups
  • High concurrency (up to 2,500 RPS)
  • 50,000-item async batch jobs
  • Automated Webhook delivery
  • Priority dedicated query routing
  • Detailed usage telemetry & audit logs
  • 99.95% uptime SLA
Upgrade to Production

Enterprise

Custom/ custom agreement

Dedicated clusters for tier-1 banks & telecommunications.

  • Unlimited lookups & custom concurrency
  • 10,000+ RPS dedicated cluster
  • Unlimited batch sizes
  • VPC peering / private networking
  • Custom ASN & IP security policies
  • Dedicated account engineer
  • 99.99% uptime guarantee
Contact Enterprise

Testimonials

D

David K.

Fintech Infrastructure Lead, Nairobi

We integrated LOOKUP into our automated M-Pesa reconciliation pipeline. Reversing hashed transaction records at 0.4ms p99 latency cut our ledger mismatch resolution from 4 hours down to real-time.

S

Sarah M.

Head of Fraud Forensics, Tier-1 Bank

The 50,000 async batch jobs with webhook delivery allowed our incident response team to analyze massive fraud dumps in minutes rather than running expensive external cloud jobs.

B

Brian O.

Compliance & Risk Director

Zero-leakage preimage lookup. We mathematically verify customer numbers against Communications Authority allocations without exposing plaintext phone numbers to third-party endpoints.

⚡ Ready for production deployment

Start resolving 100M+ phone hashes today

Get instant self-service access with 500 RPS free capacity. No credit card required.

Generate API KeyOpen Live Console