View Contact Nickolai Zeldovich <nickolai AT csail dot mit dot edu> Details
📋 Contact & Network Overview
- Contact: Nickolai Zeldovich <nickolai AT csail dot mit dot edu>
- Hash: 93fef766c4eea9dff7737eca1d6b50cb
- Countries:
United States of America (4)
Network Summary:
- Bandwidth Capacity: ~329.83 Mbit/s (329.83 Mbit/s guard)
- Network Influence: 0.01% of overall consensus weight (0.02% 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: 577. -55% lower than 1271 network average. 31th percentile with 936 median.
- Guard CW/BW: 577. -32% lower than 848 network average. 22th percentile with 1014 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 12.66 Mbit/s avg (4 relays), 1y 12.01 Mbit/s avg (4 relays), 5y 24.17 Mbit/s avg (2 relays)
- No bandwidth outliers detected
-
Performance Analysis (6mo):
- Stability: Good (Coefficient of Variation: 31.6% = 4.00 Mbit/s σ / 12.66 Mbit/s μ)
- Trend: Growth (+12.1%) for most recent (Nov 08 - Jan 08, 2026) vs least recent (Jul 09 - Sep 08, 2025)
- Capacity Utilization: 13% 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 50.62 Mbit/s avg (183 days), 1y 40.97 Mbit/s avg (183 days), 5y 48.35 Mbit/s avg (62 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 2026-01-10 03:00:00 UTC
⏰ Relay Reliability
- Overall Uptime:
30d 100.0% (4 relays), 6mo 100.0% (4 relays), 1y 100.0% (4 relays), 5y 99.9% (2 relays)
- ✅ No statistical outliers detected - consistent performance across all relays
- Network Uptime (6mo): 5th Pct: 64%, 25th Pct: 97%, 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 2026-01-10 03:00:00 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:
87.1% / 66.2% / 68.0% / 70.9%
📁 Directory Services:
100.0% / 100.0% / 100.0% / 99.9%
Excellent (>99%),
Below average (<μ of network),
Poor (≥2σ from network μ)
, from 2026-01-10 03:00:00 UTC
🚀 Flag Bandwidth Performance
Flag-specific bandwidth averages (6M/1Y/5Y):
🛡️ Entry Guard:
12.66 Mbit/s / 12.01 Mbit/s / 24.17 Mbit/s
⚡ Fast Relay:
12.66 Mbit/s / 12.01 Mbit/s / 24.17 Mbit/s
🟢 Running:
12.66 Mbit/s / 12.01 Mbit/s / 24.17 Mbit/s
📁 Hidden Service Directory:
12.66 Mbit/s / 12.01 Mbit/s / 24.17 Mbit/s
🎯 Stable Relay:
12.66 Mbit/s / 12.01 Mbit/s / 24.17 Mbit/s
📋 Version 2 Directory:
12.66 Mbit/s / 12.01 Mbit/s / 24.17 Mbit/s
High performance (>1.5x μ),
Below average (<μ of network),
Poor (≥2σ from network μ)
Last updated: Sat, 10 Jan 2026 04:47:26 GMT. Refreshed every 30 minutes from the Tor directory authorities via Tor Project's onionoo API.
| Nickname | BW Cap (329.83 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pdos (4) | 114.78 Mbit/s ✓ | UP 3w 3d 22h ago | 100.0%/100.0%/100.0%/99.8% | Match | 128.52.132.189 |        |
US
|
AS3 | Unknown | Linux | 1y 8mo 2w ago | 3w 3d 22h ago | |
| pdos02 (4) | 91.64 Mbit/s ✓ | UP 3w 3d 22h ago | 100.0%/100.0%/100.0%/0.0% | Match | 128.52.132.189 | |
US
|
AS3 | Unknown | Linux | 7mo 3w 5d ago | 3w 3d 22h ago | |
| pdos00 (4) | 65.17 Mbit/s ✓ | UP 3w 3d 22h ago | 100.0%/100.0%/100.0%/100.0% | Match | 128.52.132.189 | |
US
|
AS3 | Unknown | Linux | 1y 8mo 1w ago | 3w 3d 22h ago | |
| pdos01 (4) | 58.23 Mbit/s ✓ | UP 3w 3d 22h ago | 100.0%/100.0%/100.0%/0.0% | Match | 128.52.132.189 | |
US
|
AS3 | Unknown | Linux | 7mo 3w 5d ago | 3w 3d 22h ago |