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

📋 Contact & Network Overview

Network Summary:
  • Bandwidth Capacity: ~369.66 Mbit/s (369.66 Mbit/s guard)
  • Total Data Transferred: 1.3 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 (epic)
  • 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: 684. -47% lower than 1296 network average. 36th percentile with 901 median.
    • Guard CW/BW: 684. -30% lower than 972 network average. 29th percentile with 934 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 24.62 Mbit/s avg (4 relays), 1y 19.59 Mbit/s avg (4 relays), 5y 19.66 Mbit/s avg (4 relays)
    • No bandwidth outliers detected
  • Performance Analysis (6mo):
    • Stability: Great (Coefficient of Variation: 2.0% = 504.51 Kbit/s σ / 24.62 Mbit/s μ)
    • Trend: Growth (+101.7%) for most recent (Aug 16 - Oct 16, 2026) vs least recent (Apr 16 - Jun 16, 2026)
    • Capacity Utilization: 26% 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 98.49 Mbit/s avg (183 days), 1y 78.36 Mbit/s avg (183 days), 5y 65.29 Mbit/s avg (90 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 2026-10-17 21:00:00 UTC

⏰ Relay Reliability

  • Overall Uptime: 30d 99.2% (4 relays), 6mo 99.8% (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 2026-10-17 21:00:00 UTC

🏷️ Flag Reliability

Flag-specific uptime percentages (1M/6M/1Y/5Y):
🛡️ Stable Operation: 98.7% / 99.7% / 99.8% / 99.9%
⚡ Fast Relay: 99.2% / 99.8% / 99.9% / 99.9%
🟢 Running Operation: 99.2% / 99.8% / 99.9% / 99.9%
🛡️ Entry Guard: 98.7% / 99.7% / 99.8% / 99.9%
📁 Directory Services: 99.2% / 99.8% / 99.9% / 99.9%
Excellent (>99%), Below average (<μ of network), Poor (≥2σ from network μ) , from 2026-10-17 21:00:00 UTC

🚀 Flag Bandwidth Performance

Flag-specific bandwidth averages (6M/1Y/5Y):
🛡️ Entry Guard: 24.62 Mbit/s / 19.59 Mbit/s / 19.66 Mbit/s
⚡ Fast Relay: 24.62 Mbit/s / 19.59 Mbit/s / 19.66 Mbit/s
🟢 Running: 24.62 Mbit/s / 19.59 Mbit/s / 19.66 Mbit/s
🎯 Stable Relay: 24.62 Mbit/s / 19.59 Mbit/s / 19.66 Mbit/s
📋 Version 2 Directory: 24.62 Mbit/s / 19.59 Mbit/s / 19.66 Mbit/s
High performance (>1.5x μ), Below average (<μ of network), Poor (≥2σ from network μ)

Last updated: Sat, 17 Oct 2026 23:06:30 GMT. Refreshed every 30 minutes from the Tor directory authorities via Tor Project's onionoo API.

Status Nickname BW Cap (369.66 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
pdos00 (4) 99.61 Mbit/s   ✓ 411 TB UP 2d 16h 53m ago 99.4%/99.8%/99.9%/99.9% Match 128.52.132.189 FastGuardRunningStableV2DirValid NA MyFamily United States of America US AS3 Unknown Linux 2y 5mo 2w ago 2d 17h 2m ago 2603:400a:0:9:f816:3eff:fe73:f862
pdos (4) 95.65 Mbit/s   ✓ 497 TB UP 2d 16h 53m ago 99.3%/99.7%/99.9%/99.8% 97.6%/99.4%/99.7%/— 128.52.132.189 FastGuardRunningStableV2DirValid NA MyFamily United States of America US AS3 Unknown Linux 2y 5mo 2w ago 2d 17h 2m ago 2603:400a:0:9:f816:3eff:fe73:f862
pdos01 (4) 95.32 Mbit/s   ✓ 183 TB UP 2d 16h 53m ago 98.9%/99.8%/99.9%/99.9% Match 128.52.132.189 FastGuardRunningStableV2DirValid NA MyFamily United States of America US AS3 Unknown Linux 1y 5mo 1d ago 2d 17h 2m ago 2603:400a:0:9:f816:3eff:fe73:f862
pdos02 (4) 79.08 Mbit/s   ✓ 179 TB UP 2d 16h 53m ago 99.0%/99.7%/99.9%/99.9% Match 128.52.132.189 FastGuardRunningStableV2DirValid NA MyFamily United States of America US AS3 Unknown Linux 1y 5mo 1d ago 2d 17h 2m ago 2603:400a:0:9:f816:3eff:fe73:f862