Data Collection Methodology

DNS Intelligence Framework

Multi-source Collection

  • Public DNS Servers: Aggregated from global recursive DNS resolvers
  • Cedexis Radar: Leverage DNS query data from 250k+ measurement points
  • Authoritative NS: Direct collection from our global nameserver cluster
  • Community Submission: Verified user-contributed DNS endpoints

Verification Process

Reachability Check

Hourly TCP/UDP connectivity validation

Response Validation

DNSSEC validation & response consistency

Performance Metric

Latency measurement from 10 global regions

ASN Ranking System

Data Synthesis

  • Cedexis Coverage: Real-time traffic data from 500+ ISPs
  • APNIC Stats: Official allocation data and user estimates
  • BGP Feed: Routing table analysis from 10+ route collectors

Calculation Model

Ranking = 0.4×(Cedexis Traffic Share) + 0.3×(APNIC User Coverage) + 0.3×(Network Stablility)

Data Freshness

Update Cycle

  • DNS Records: Hourly refresh
  • ASN Ranking: Daily recalculation
  • Infrastructure Data: Weekly synchronization