View Contact Nickolai Zeldovich <nickolai AT csail dot mit dot edu> Details

📋 Contact & Network Overview

Network Summary:
  • Bandwidth Capacity: ~383.01 Mbit/s (383.01 Mbit/s guard)
  • Network Influence: 0.01% of overall consensus weight (0.03% guard)
  • Network Position: Guard-only (4 total relays, 4 guards)

📊 Operator Intelligence

  • Network Diversity: Poor, 1 network
  • Geographic Diversity: Poor, 1 country
  • Infrastructure Diversity: Poor, 1 platform, 1 version
  • Bandwidth Capacity Measurements: 4/4 relays measured by authorities
  • Performance Insights: Overall CW/BW: 554. -57% lower than 1284 network average. 29th percentile with 924 median.
    • Guard CW/BW: 554. -36% lower than 868 network average. 19th percentile with 1010 median.
  • Operational Maturity: Operating since 2024-05-01 (expanded through 2025-05-19)
  • Version Compliance: All, 4 (100%) compliant
    • Version Status: All, 4 (100%) recommended

🚀 Bandwidth Reliability

Operator Performance:
  • Average Relay Throughput: 6mo 12.42 Mbit/s avg (4 relays), 1y 17.18 Mbit/s avg (2 relays), 5y 25.89 Mbit/s avg (2 relays)
    • No bandwidth outliers detected
  • Performance Analysis (6mo):
    • Stability: Good (Coefficient of Variation: 47.0% = 5.83 Mbit/s σ / 12.42 Mbit/s μ)
    • Trend: Stable (+1.4%) for most recent (Aug 23 - Oct 23, 2025) vs least recent (Apr 23 - Jun 23, 2025)
    • Capacity Utilization: 13% of all-time peak capacity (current 6mo avg vs all-time 5yr peak)
Network Comparison:
  • Network Position: Top 75% (25th-50th percentile)
  • Network Contribution: 6mo 47.26 Mbit/s avg (183 days), 1y 34.35 Mbit/s avg (183 days), 5y 51.79 Mbit/s avg (54 days)
Bandwidth Stability: Great (Top 25% most stable), Good (25-50% most stable), Variable (25-50% most stable), Extreme (Bottom 10% most variable)
Reliability data available for 4/4 relays, from 2025-10-24 17:00:00 UTC

⏰ Relay Reliability

  • Overall Uptime: 30d 100.0% (4 relays), 6mo 100.0% (4 relays), 1y 100.0% (2 relays), 5y 99.9% (2 relays)
    • ✅ No statistical outliers detected - consistent performance across all relays
    • Network Uptime (6mo): 5th Pct: 71%, 25th Pct: 98%, 50th Pct: 100%, 75th Pct: 100%, 90th Pct: 100%, 95th Pct: 100%, 99th Pct: 100%, Operator: 100%
  • Offline: 0 relays
Reliability data available for 4/4 relays, from 2025-10-24 17:00:00 UTC

🏷️ Flag Reliability

Flag-specific uptime percentages (1M/6M/1Y/5Y):
🛡️ Stable Operation: 100.0% / 100.0% / 100.0% / 99.8%
⚡ Fast Relay: 100.0% / 100.0% / 100.0% / 99.9%
🟢 Running Operation: 100.0% / 100.0% / 100.0% / 99.9%
🛡️ Entry Guard: 100.0% / 100.0% / 100.0% / 99.8%
📁 Directory Services: 100.0% / 100.0% / 100.0% / 99.9%
Excellent (>99%), Below average (<μ of network), Poor (≥2σ from network μ) , from 2025-10-24 17:00:00 UTC

🚀 Flag Bandwidth Performance

Flag-specific bandwidth averages (6M/1Y/5Y):
🛡️ Entry Guard: 12.42 Mbit/s / 17.18 Mbit/s / 25.89 Mbit/s
⚡ Fast Relay: 12.42 Mbit/s / 17.18 Mbit/s / 25.89 Mbit/s
🟢 Running: 12.42 Mbit/s / 17.18 Mbit/s / 25.89 Mbit/s
🎯 Stable Relay: 12.42 Mbit/s / 17.18 Mbit/s / 25.89 Mbit/s
📋 Version 2 Directory: 12.42 Mbit/s / 17.18 Mbit/s / 25.89 Mbit/s
High performance (>1.5x μ), Below average (<μ of network), Poor (≥2σ from network μ)

Last updated: Fri, 24 Oct 2025 18:31:39 GMT. Refreshed every 30 minutes from the Tor directory authorities via Tor Project's onionoo API.

Nickname BW Cap (383.01 Mbit/s) Uptime/Downtime Uptime (1M/6M/1Y/5Y) Flag Uptime (1M/6M/1Y/5Y) IPv4 Flags Country AS Number AS Name Platform First Seen Last Restarted
pdos02 (4) 115.59 Mbit/s    UP 1d 11h 31m ago 100.0%/100.0%/0.0%/0.0% Match 128.52.132.189 Fast Guard Running Stable V2Dir Valid United States of America US AS3 Unknown Linux 5mo 1w 1d ago 1d 11h 36m ago
pdos (4) 108.85 Mbit/s    UP 1d 11h 31m ago 100.0%/100.0%/100.0%/99.7% Match 128.52.132.189 Fast Guard Running Stable V2Dir Valid United States of America US AS3 Unknown Linux 1y 5mo 3w ago 1d 11h 36m ago
pdos00 (4) 87.82 Mbit/s    UP 1d 11h 31m ago 100.0%/100.0%/100.0%/100.0% Match 128.52.132.189 Fast Guard Running Stable V2Dir Valid United States of America US AS3 Unknown Linux 1y 5mo 3w ago 1d 11h 36m ago
pdos01 (4) 70.75 Mbit/s    UP 1d 11h 31m ago 100.0%/100.0%/0.0%/0.0% Match 128.52.132.189 Fast Guard Running Stable V2Dir Valid United States of America US AS3 Unknown Linux 5mo 1w 1d ago 1d 11h 36m ago