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

📋 Contact & Network Overview

Network Summary:
  • Bandwidth Capacity: ~396.66 Mbit/s (396.66 Mbit/s guard)
  • Total Data Transferred: 1.2 PB (0.02% of 5yr network data)
  • Network Influence: 0.02% of overall consensus weight (0.03% guard)
  • Network Position: Guard-only (4 total relays, 4 guards)

📊 Operator Intelligence

  • Network Diversity: Great, 1 network (legendary)
  • Geographic Diversity: Poor, 1 country (4 relays)
  • Infrastructure Diversity: Poor, 1 platform
  • Bandwidth Capacity Measurements: 4/4 relays measured by authorities
  • Performance Insights: Overall CW/BW: 615. -51% lower than 1249 network average. 34th percentile with 850 median.
    • Guard CW/BW: 615. -37% lower than 975 network average. 23th percentile with 951 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
  • Family Support: 4 MyFamily (100%)

🚀 Bandwidth Reliability

Operator Performance:
  • Average Relay Throughput: 6mo 21.92 Mbit/s avg (4 relays), 1y 18.15 Mbit/s avg (4 relays), 5y 18.88 Mbit/s avg (4 relays)
    • No bandwidth outliers detected
  • Performance Analysis (6mo):
    • Stability: Great (Coefficient of Variation: 4.3% = 950.78 Kbit/s σ / 21.92 Mbit/s μ)
    • Trend: Growth (+87.6%) for most recent (Jul 20 - Sep 19, 2026) vs least recent (Mar 19 - May 19, 2026)
    • Capacity Utilization: 23% 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 87.56 Mbit/s avg (184 days), 1y 72.60 Mbit/s avg (183 days), 5y 62.74 Mbit/s avg (87 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 2026-09-20 12:00:00 UTC

⏰ Relay Reliability

  • Overall Uptime: 30d 99.8% (4 relays), 6mo 99.9% (4 relays), 1y 99.9% (4 relays), 5y 99.9% (4 relays)
    • ✅ No statistical outliers detected - consistent performance across all relays
    • Network Uptime (6mo): 5th Pct: 86%, 25th Pct: 98%, 50th Pct: 99%, 75th Pct: 100%, Operator: 100%, 90th Pct: 100%, 95th Pct: 100%, 99th Pct: 100%
  • Offline: 0 relays
Reliability data available for 4/4 relays, from 2026-09-20 12:00:00 UTC

🏷️ Flag Reliability

Flag-specific uptime percentages (1M/6M/1Y/5Y):
🛡️ Stable Operation: 99.8% / 99.9% / 99.9% / 99.9%
⚡ Fast Relay: 99.8% / 99.9% / 99.9% / 99.9%
🟢 Running Operation: 99.8% / 99.9% / 99.9% / 99.9%
🛡️ Entry Guard: 99.8% / 99.9% / 99.9% / 99.9%
📂 Hidden Services: 38.1% / 46.3% / 54.2% / 60.6%
📁 Directory Services: 99.8% / 99.9% / 99.9% / 99.9%
Excellent (>99%), Below average (<μ of network), Poor (≥2σ from network μ) , from 2026-09-20 12:00:00 UTC

🚀 Flag Bandwidth Performance

Flag-specific bandwidth averages (6M/1Y/5Y):
🛡️ Entry Guard: 21.92 Mbit/s / 18.15 Mbit/s / 18.88 Mbit/s
⚡ Fast Relay: 21.92 Mbit/s / 18.15 Mbit/s / 18.88 Mbit/s
🟢 Running: 21.92 Mbit/s / 18.15 Mbit/s / 18.88 Mbit/s
📁 Hidden Service Directory: 21.80 Mbit/s / 17.74 Mbit/s / 16.71 Mbit/s
🎯 Stable Relay: 21.92 Mbit/s / 18.15 Mbit/s / 18.88 Mbit/s
📋 Version 2 Directory: 21.92 Mbit/s / 18.15 Mbit/s / 18.88 Mbit/s
High performance (>1.5x μ), Below average (<μ of network), Poor (≥2σ from network μ)

Last updated: Sun, 20 Sep 2026 13:45:54 GMT. Refreshed every 30 minutes from the Tor directory authorities via Tor Project's onionoo API.

Status Nickname BW Cap (396.66 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
pdos (4) 99.86 Mbit/s   ✓ 474 TB UP 1w 2d 7h ago 99.5%/99.8%/99.9%/99.8% Match 128.52.132.189 FastGuardRunningStableV2DirValid NA MyFamily United States of America US AS3 Unknown Linux 2y 4mo 3w ago 1w 2d 7h ago 2603:400a:0:9:f816:3eff:fe73:f862
pdos02 (4) 98.48 Mbit/s   ✓ 156 TB UP 1w 2d 7h ago 99.9%/99.9%/100.0%/100.0% Match 128.52.132.189 FastGuardHSDirRunningStableV2DirValid NA MyFamily United States of America US AS3 Unknown Linux 1y 4mo 4d ago 1w 2d 7h ago 2603:400a:0:9:f816:3eff:fe73:f862
pdos00 (4) 99.02 Mbit/s   ✓ 388 TB UP 1w 2d 7h ago 99.9%/99.9%/99.9%/99.9% Match 128.52.132.189 FastGuardHSDirRunningStableV2DirValid NA MyFamily United States of America US AS3 Unknown Linux 2y 4mo 2w ago 1w 2d 7h ago 2603:400a:0:9:f816:3eff:fe73:f862
pdos01 (4) 99.29 Mbit/s   ✓ 159 TB UP 1w 2d 7h 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 4mo 4d ago 1w 2d 7h ago 2603:400a:0:9:f816:3eff:fe73:f862