View Contact ftp.halifax.rwth-aachen.de Details

📋 Contact & Network Overview

Network Summary:
  • Bandwidth Capacity: ~4.50 Gbit/s (4.50 Gbit/s guard)
  • Total Data Transferred: 31 PB (0.51% of 5yr network data)
  • Network Influence: 0.41% of overall consensus weight (0.72% guard)
  • Network Position: Guard-only (9 total relays, 9 guards)

📊 Operator Intelligence

  • Network Diversity: Great, 2 networks (1 rare)
  • Geographic Diversity: Poor, 1 country
  • Infrastructure Diversity: Poor, 1 platform
  • Bandwidth Capacity Measurements: 9/9 relays measured by authorities
  • Performance Insights: Overall CW/BW: 1411. +21% higher than 1169 network average. 86th percentile with 897 median.
    • Guard CW/BW: 1411. +60% higher than 884 network average. 85th percentile with 974 median.
  • Operational Maturity: Operating since 2024-05-12 (expanded through 2024-09-19)
  • Version Compliance: All, 9 (100%) compliant
    • Version Status: All, 9 (100%) recommended
  • Family Support: 9 Happy Families (100%)

⏰ Relay Reliability

  • Overall Uptime: 30d 99.2% (9 relays), 6mo 99.7% (9 relays), 1y 99.8% (9 relays), 5y 97.8% (9 relays)
    • Outlier (6mo: ≥2σ 99.5% from μ 99.7%): 1 relays out of 9 relays (11.1%)Exceptional: 1 relay
    • Network Uptime (6mo): 5th Pct: 71%, 25th Pct: 98%, Operator: 100%, 50th Pct: 100%, 75th Pct: 100%, 90th Pct: 100%, 95th Pct: 100%, 99th Pct: 100%
  • Offline: 0 relays
Reliability data available for 9/9 relays, from 2026-05-27 05:00:00 UTC

🚀 Bandwidth Reliability

Operator Performance:
  • Average Relay Throughput: 6mo 214.05 Mbit/s avg (9 relays), 1y 230.62 Mbit/s avg (9 relays), 5y 209.77 Mbit/s avg (9 relays)
  • Performance Analysis (6mo):
    • Stability: Good (Coefficient of Variation: 33.0% = 70.59 Mbit/s σ / 214.05 Mbit/s μ)
    • Trend: Growth (+6.3%) for most recent (Mar 26 - May 25, 2026) vs least recent (Nov 25 - Jan 24, 2026)
    • Capacity Utilization: 46% of all-time peak capacity (current 6mo avg vs all-time 5yr peak)
    • Bandwidth Outliers: 1 relay with unusual bandwidth patterns, Low: COtto
Network Comparison:
  • Network Position: Top 25% (75th-95th percentile)
  • Network Contribution: 6mo 1.93 Gbit/s avg (181 days), 1y 2.08 Gbit/s avg (183 days), 5y 800.95 Mbit/s avg (177 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 9/9 relays, from 2026-05-27 05:00:00 UTC

🏆 AROI Champion Rankings

3 winning AROI Champions Dashboard categories:

🏷️ Flag Reliability

Flag-specific uptime percentages (1M/6M/1Y/5Y):
🛡️ Stable Operation: 99.2% / 99.7% / 99.8% / 96.7%
⚡ Fast Relay: 99.2% / 99.7% / 99.8% / 97.6%
🟢 Running Operation: 99.2% / 99.7% / 99.8% / 97.8%
🛡️ Entry Guard: 99.2% / 99.7% / 99.8% / 92.8%
📂 Hidden Services: 59.0% / 82.1% / 83.0% / 81.5%
📁 Directory Services: 99.2% / 99.7% / 99.8% / 97.8%
Excellent (>99%), Below average (<μ of network), Poor (≥2σ from network μ) , from 2026-05-27 05:00:00 UTC

🚀 Flag Bandwidth Performance

Flag-specific bandwidth averages (6M/1Y/5Y):
🛡️ Entry Guard: 214.05 Mbit/s / 230.62 Mbit/s / 209.77 Mbit/s
⚡ Fast Relay: 214.05 Mbit/s / 230.62 Mbit/s / 209.77 Mbit/s
🟢 Running: 214.05 Mbit/s / 230.62 Mbit/s / 209.77 Mbit/s
📁 Hidden Service Directory: 214.05 Mbit/s / 230.62 Mbit/s / 209.77 Mbit/s
🎯 Stable Relay: 214.05 Mbit/s / 230.62 Mbit/s / 209.77 Mbit/s
📋 Version 2 Directory: 214.05 Mbit/s / 230.62 Mbit/s / 209.77 Mbit/s
High performance (>1.5x μ), Below average (<μ of network), Poor (≥2σ from network μ)

Last updated: Wed, 27 May 2026 07:15:38 GMT. Refreshed every 30 minutes from the Tor directory authorities via Tor Project's onionoo API.

💡 Want to upgrade to ciissversion:3?

All 9 of your relays validate cleanly on CIISS v2 (RSA fingerprint proofs). The new CIISS v3 spec replaces per-relay RSA proofs with a single shared ed25519 family-id proof — same url, one published file for the whole family.

To migrate, change torrc ContactInfo to:

ciissversion:3 url:ftp.halifax.rwth-aachen.de proof:uri-familyid-ed25519

And on a secure host, generate the happy-family key:

tor --keygen-family /path/to/myfamily # then deploy myfamily.secret_family_key to every relay's KeyDir

Publish .public_family_id at /.well-known/tor-relay/ed25519-family-id.txt. Allow ~24h after restarting Tor for Onionoo to refresh family_ids. Full guide: aroivalidator setup guide.

✓ VALIDATED RELAYS (9)

Status Nickname BW Cap (4.50 Gbit/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
✓ COtto (9) 71.56 Mbit/s   ✓ 1.4 PB UP 2w 3d 11h ago 100.0%/100.0%/100.0%/99.8% Match 157.90.112.145 FastGuardHSDirRunningStableV2DirValid NA Happy Families Germany DE AS24940 Hetzner Online GmbH Linux 2y 2w 1d ago 2w 3d 11h ago N/A
✓ FTPhalifaxRWTH (9) 591.28 Mbit/s   ✓ 3.7 PB UP 2w 4d 2h ago 99.1%/99.7%/99.8%/97.7% —/—/—/92.6% 137.226.34.45 FastGuardHSDirRunningStableV2DirValid NA Happy Families Germany DE AS47610 RWTH Aachen University Linux 1y 8mo 1w ago 2w 4d 2h ago N/A
✓ FTPhalifaxRWTH (9) 544.08 Mbit/s   ✓ 3.8 PB UP 2w 4d 14m ago 99.1%/99.7%/99.8%/97.6% —/—/—/92.0% 137.226.34.45 FastGuardHSDirRunningStableV2DirValid NA Happy Families Germany DE AS47610 RWTH Aachen University Linux 2y 5d 7h ago 2w 4d 15m ago N/A
✓ FTPhalifaxRWTH (9) 524.58 Mbit/s   ✓ 3.4 PB UP 2w 4d 9h ago 99.1%/99.7%/99.8%/97.6% —/—/—/91.4% 137.226.34.45 FastGuardHSDirRunningStableV2DirValid NA Happy Families Germany DE AS47610 RWTH Aachen University Linux 2y 5d 7h ago 2w 4d 9h ago N/A
✓ FTPhalifaxRWTH (9) 663.21 Mbit/s   ✓ 3.7 PB UP 2w 4d 8h ago 99.1%/99.7%/99.8%/97.6% —/—/—/92.1% 137.226.34.45 FastGuardHSDirRunningStableV2DirValid NA Happy Families Germany DE AS47610 RWTH Aachen University Linux 2y 5d 7h ago 2w 4d 8h ago N/A
✓ FTPhalifaxRWTH (9) 540.92 Mbit/s   ✓ 3.6 PB UP 2w 4d 9h ago 99.1%/99.7%/99.8%/97.6% —/—/—/91.9% 137.226.34.45 FastGuardHSDirRunningStableV2DirValid NA Happy Families Germany DE AS47610 RWTH Aachen University Linux 2y 5d 7h ago 2w 4d 9h ago N/A
✓ FTPhalifaxRWTH (9) 511.41 Mbit/s   ✓ 3.6 PB UP 2w 4d 7h ago 99.1%/99.7%/99.8%/97.6% —/—/—/92.0% 137.226.34.45 FastGuardHSDirRunningStableV2DirValid NA Happy Families Germany DE AS47610 RWTH Aachen University Linux 2y 5d 7h ago 2w 4d 7h ago N/A
✓ FTPhalifaxRWTH (9) 479.33 Mbit/s   ✓ 3.8 PB UP 2w 4d 9h ago 99.1%/99.7%/99.8%/97.6% —/—/—/92.0% 137.226.34.45 FastGuardHSDirRunningStableV2DirValid NA Happy Families Germany DE AS47610 RWTH Aachen University Linux 2y 5d 7h ago 2w 4d 9h ago N/A
✓ FTPhalifaxRWTH (9) 575.27 Mbit/s   ✓ 3.7 PB UP 2w 4d 9h ago 99.1%/99.7%/99.7%/97.6% —/—/—/91.8% 137.226.34.45 FastGuardHSDirRunningStableV2DirValid NA Happy Families Germany DE AS47610 RWTH Aachen University Linux 2y 5d 7h ago 2w 4d 9h ago N/A