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

📋 Contact & Network Overview

Network Summary:
  • Bandwidth Capacity: ~314.46 Mbit/s (314.46 Mbit/s guard)
  • Total Data Transferred: 945 TB (0.02% of 5yr network data)
  • Network Influence: 0.01% of overall consensus weight (0.02% guard)
  • Network Position: Guard-only (4 total relays, 4 guards)

📊 Operator Intelligence

  • Network Diversity: Great, 1 network (epic)
  • Geographic Diversity: Poor, 1 country
  • Infrastructure Diversity: Poor, 1 platform
  • Bandwidth Capacity Measurements: 4/4 relays measured by authorities
  • Performance Insights: Overall CW/BW: 595. -51% lower than 1211 network average. 35th percentile with 909 median.
    • Guard CW/BW: 595. -39% lower than 972 network average. 23th percentile with 1045 median.
  • Operational Maturity: Operating since 2024-05-02 (expanded through 2025-05-17)
  • Version Compliance: All, 4 (100%) compliant
    • Version Status: All, 4 (100%) recommended
  • Family Support: 4 MyFamily (100%)

🚀 Bandwidth Reliability

Operator Performance:
  • Average Relay Throughput: 6mo 15.28 Mbit/s avg (4 relays), 1y 13.59 Mbit/s avg (4 relays), 5y 17.11 Mbit/s avg (4 relays)
    • No bandwidth outliers detected
  • Performance Analysis (6mo):
    • Stability: Great (Coefficient of Variation: 11.8% = 1.80 Mbit/s σ / 15.28 Mbit/s μ)
    • Trend: Stable (+0.7%) for most recent (Apr 14 - Jun 13, 2026) vs least recent (Dec 13 - Feb 11, 2026)
    • Capacity Utilization: 16% of all-time peak capacity (current 6mo avg vs all-time 5yr peak)
Network Comparison:
  • Network Position: Top 50% (50th-75th percentile)
  • Network Contribution: 6mo 61.13 Mbit/s avg (182 days), 1y 54.35 Mbit/s avg (183 days), 5y 57.12 Mbit/s avg (77 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 2026-06-15 12:00:00 UTC

⏰ Relay Reliability

  • Overall Uptime: 30d 100.0% (4 relays), 6mo 100.0% (4 relays), 1y 100.0% (4 relays), 5y 99.9% (4 relays)
    • ✅ No statistical outliers detected - consistent performance across all relays
    • Network Uptime (6mo): 5th Pct: 75%, 25th Pct: 98%, 50th Pct: 100%, Operator: 100%, 75th Pct: 100%, 90th Pct: 100%, 95th Pct: 100%, 99th Pct: 100%
  • Offline: 0 relays
Reliability data available for 4/4 relays, from 2026-06-15 12:00:00 UTC

🏷️ Flag Reliability

Flag-specific uptime percentages (1M/6M/1Y/5Y):
🛡️ Stable Operation: 100.0% / 100.0% / 100.0% / 99.9%
⚡ 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% / 99.9%
📂 Hidden Services: 41.9% / 58.9% / 61.2% / 65.6%
📁 Directory Services: 100.0% / 100.0% / 100.0% / 99.9%
Excellent (>99%), Below average (<μ of network), Poor (≥2σ from network μ) , from 2026-06-15 12:00:00 UTC

🚀 Flag Bandwidth Performance

Flag-specific bandwidth averages (6M/1Y/5Y):
🛡️ Entry Guard: 15.28 Mbit/s / 13.59 Mbit/s / 17.11 Mbit/s
⚡ Fast Relay: 15.28 Mbit/s / 13.59 Mbit/s / 17.11 Mbit/s
🟢 Running: 15.28 Mbit/s / 13.59 Mbit/s / 17.11 Mbit/s
📁 Hidden Service Directory: 15.28 Mbit/s / 13.59 Mbit/s / 17.11 Mbit/s
🎯 Stable Relay: 15.28 Mbit/s / 13.59 Mbit/s / 17.11 Mbit/s
📋 Version 2 Directory: 15.28 Mbit/s / 13.59 Mbit/s / 17.11 Mbit/s
High performance (>1.5x μ), Below average (<μ of network), Poor (≥2σ from network μ)

Last updated: Mon, 15 Jun 2026 13:15:53 GMT. Refreshed every 30 minutes from the Tor directory authorities via Tor Project's onionoo API.

Status Nickname BW Cap (314.46 Mbit/s) Total Data Uptime/Downtime Uptime (1M/6M/1Y/5Y) Flag Uptime (1M/6M/1Y/5Y) ▾ IPv4 Flags DNS Family Country AS Number AS Name Platform First Seen Last Restarted IPv6
pdos01 (4) 87.30 Mbit/s   ✓ 103 TB UP 5d 7h 10m ago 100.0%/100.0%/100.0%/100.0% Match 128.52.132.189 FastGuardHSDirRunningStableV2DirValid NA MyFamily United States of America US AS3 Unknown Linux 1y 4w 1d ago 5d 7h 11m ago N/A
pdos00 (4) 96.89 Mbit/s   ✓ 335 TB UP 5d 7h 10m ago 100.0%/100.0%/100.0%/100.0% Match 128.52.132.189 FastGuardHSDirRunningStableV2DirValid NA MyFamily United States of America US AS3 Unknown Linux 1y 9mo 1w ago 5d 7h 11m ago N/A
pdos02 (4) 68.79 Mbit/s   ✓ 94 TB UP 5d 7h 10m ago 100.0%/100.0%/100.0%/100.0% Match 128.52.132.189 FastGuardHSDirRunningStableV2DirValid NA MyFamily United States of America US AS3 Unknown Linux 1y 4w 1d ago 5d 7h 11m ago N/A
pdos (4) 61.48 Mbit/s   ✓ 413 TB UP 5d 7h 10m ago 100.0%/100.0%/100.0%/99.8% Match 128.52.132.189 FastGuardHSDirRunningStableV2DirValid NA MyFamily United States of America US AS3 Unknown Linux 2y 1mo 2w ago 5d 7h 11m ago N/A