View Relay "BostonUCompSci"

Fingerprint: 94C4B7B8C50C86A92B6A20107539EE2678CF9A28 | Family: 1 relay | Tor Admin <tor -at- cs -dot- bu -dot- edu> | AS10961 | United States of America | Linux

Health Status

Consensus
In Consensus (9/9 Directory Auths)
Flags
Running, Valid, V2Dir, Fast, Stable, Guard, Exit (7)
DNS Health
Healthy (19.9s, 97th percentile) (via exitdnshealth.1aeo.com)
BW Verified
5/7 BW Auths Measured 50 Kbit/s Median
Stability
Not Overloaded | UP 3d 18h 35m ago | UP 99% (1M)
Reachability
IPv4: 9/9 (Directory Auths)
First Seen
12y 7mo 6d ago
BW Weight
0.00% of Network | 61 Mbit/s Observed By Relay
Version
0.4.9.15 Recommended
Issues Detected:
  • High consensus weight deviation : Large variation in Consensus Weight values across authorities (see 'Cons Wt' column in Per-Authority Details below)
    Suggestion: Consensus weight measurements vary significantly between authorities. This can affect traffic distribution. Ensure stable network connection and consistent bandwidth availability.

Connectivity and Location

Addresses
OR Address
cs-tor.bu.edu
204.8.156.142:443
Exit Address
204.8.156.142
Reachability (Directory Authorities)
IPv4
9/9
Location
Country
United States of America United States of America
Interactive Map
View in RouteFluxMap
Autonomous System
AS Number
AS10961
AS Name
Boston GigaPoP (BGP.tools)
AS Rarity
Legendary (score: 5/5, <0.05% consensus weight, 1 operator)

Flags and Eligibility

Current Flags (7): Running, Valid, V2Dir, Fast, Stable, Guard, Exit
Eligible Flags (7): Running: 9/9 | Valid: 9/9 | V2Dir: 9/9 | Fast: 9/9 | Stable: 6/9 | HSDir: 0/9 | Guard: 6/9 | Exit: 9/9
Eligibility Flag Vote Details
Flag Metric Status Relay Value Threshold Required
Running IPv4 Reachability Meets (9/9 DA) 9/9 authorities reached relay ≥5/9 DA ORPort reachable
Valid Descriptor Meets (9/9 DA) 9/9 authorities assigned Valid Not blacklisted + valid descriptor (≥5/9 DA)
V2Dir DirPort Available Meets (9/9 DA) Tunnelled: Yes (no DirPort) (R) Tunnelled directory via ORPort or DirPort (≥5/9 DA)
Fast Speed Meets (9/9 DA) 61.8 Mbit/s (R) ≥800.0 Kbit/s (Tor spec minimum) OR top 7/8 (≥5/9 DA)
[Stricter] moria1: ≥8.4 Mbit/s
Stable MTBF Below (1/9 DA) Median: 6.4d (1/9 DA above threshold)
Min/Max: 2.6d / 12974.8d (9/9 DA, Voting / Total Eligible)		 ≥3.2d - 11.2d (varies) (≥5/9 DA)
[Stricter] moria1: ≥6577.2d
Uptime Partial (8/9 DA) 3.8d (R) ≥3.3d - 3.3d (varies) (≥5/9 DA)
HSDir Prereq: Fast Meets (9/9 DA) 9/9 DA assigned Fast ≥800.0 Kbit/s (Tor spec minimum) OR top 7/8 (≥5/9 DA)
[Stricter] moria1: ≥8.4 Mbit/s
Prereq: Stable Meets (6/9 DA) 6/9 DA assigned Stable ≥3.2d - 11.2d (varies) (≥5/9 DA)
[Stricter] moria1: ≥6577.2d
Prereq: V2Dir Meets (9/9 DA) 9/9 DA assigned V2Dir Tunnelled directory via ORPort or DirPort (≥5/9 DA)
WFU Meets (8/9 DA) Median: 99.1% (8/9 DA above threshold)
Min/Max: 97.9% / 99.3% (9/9 DA, Voting / Total Eligible)		 ≥98.0% (≥5/9 DA)
Time Known Meets (8/9 DA) Median: 17.0d (9/9 DA above threshold)
Min/Max: 9.8d / 18.7d (9/9 DA, Voting / Total Eligible)		 ≥1.0d (most) (≥5/9 DA)
[Stricter] moria1: ≥9.9d
Guard Prereq: Fast Meets (9/9 DA) 9/9 DA assigned Fast ≥800.0 Kbit/s (Tor spec minimum) OR top 7/8 (≥5/9 DA)
[Stricter] moria1: ≥8.4 Mbit/s
Prereq: Stable Meets (6/9 DA) 6/9 DA assigned Stable ≥3.2d - 11.2d (varies) (≥5/9 DA)
[Stricter] moria1: ≥6577.2d
Prereq: V2Dir Meets (9/9 DA) 9/9 DA assigned V2Dir Tunnelled directory via ORPort or DirPort (≥5/9 DA)
WFU Meets (8/9 DA) Median: 99.1% (8/9 DA above threshold)
Min/Max: 97.9% / 99.3% (9/9 DA, Voting / Total Eligible)		 ≥98% (≥5/9 DA)
Time Known Meets (9/9 DA) Median: 17.0d (9/9 DA above threshold)
Min/Max: 9.8d / 18.7d (9/9 DA, Voting / Total Eligible)		 ≥8 days (≥5/9 DA)
Bandwidth Meets (9/9 DA) 61.8 Mbit/s (R) ≥16.0 Mbit/s (Tor spec minimum) OR ≥80.0 Mbit/s-280.0 Mbit/s (≥5/9 DA)
Exit Exit Policy Meets (9/9 DA) Port 80: Yes | Port 443: Yes (R) Allows ≥1 /8 on ports 80 AND 443 (≥5/9 DA)

(DA) = Dir. Auth. Measured | (R) = Relay Reported
Data from Tor CollecTor (authority votes, fetched 2026-11-08 08:01:41).

Bandwidth Metrics

Capacity (Relay Reported)
Observed Bandwidth
61.84 Mbit/s
Advertised Bandwidth
50.33 Mbit/s
Rate Limit
50.33 Mbit/s
Burst Limit
50.33 Mbit/s
Total Data
990 TB (5 years)
1mo: 21 TB | 6mo: 99 TB | 1y: 171 TB | 5y: 990 TB
Measurement (Directory Authority Verified)

Source: CollecTor — fetched 2026-11-08 08:01:41

Measured By
5/7 Bandwidth Authorities
Not measured by: faravahar, longclaw
Median Measurement
50.3 Kbit/s
Min / Max
46.4 Kbit/s / 88.0 Kbit/s
Deviation
41.6 Kbit/s [Warning] High variation
Network Participation: Consensus Weight: 0.0031% of network (38th pctl) | Guard: N/A | Middle: N/A | Exit: 0.0095% (13th pctl)

Uptime and Stability

Uptime Metrics
Current Status
UP 3d 18h 35m ago
Overall Uptime (1M/6M/1Y/5Y)
99.3%/99.8%/99.9%/99.2%
Flag Uptime (1M/6M/1Y/5Y)
Matches Overall Uptime (99.3%/99.8%/99.9%/99.2%)
Hibernating
No
Timestamps
First Seen
12y 7mo 6d ago (2014-04-08 15:00:00)
Last Seen
2h 7m 1s ago (2026-11-08 06:00:00)
Last Restarted
3d 18h 35m ago (2026-11-04 13:31:19)
Last Changed Address
2026-04-06 23:00:00
Overload Status: Not Overloaded — No overload conditions reported.

Operator and Family

Operator Identity

Source: AROI Validation API — 2026-11-07 23:00 UTC

AROI Domain (?)
Not specified
Operator Validation
Unvalidated
This Relay
N/A (no AROI configured)
Contact
Tor Admin <tor -at- cs -dot- bu -dot- edu>
Family Configuration
Family Support
None — No family membership configured
Happy Families (family-cert)
Effective Members: 0
none
MyFamily (legacy declarations)
Effective Member: 1 
94C4B7B8C50C86A92B6A20107539EE2678CF9A28 (this relay)
Alleged Members: 0
none
Indirect Members: 0
none

Software and Version

Platform
Linux — Tor 0.4.9.15 on Linux
Version
0.4.9.15 — Recommended
Version Status
Recommended

Exit Health & Policy

DNS Health
Status
Healthy (avg. 19.9s, 97th percentile)
Query Domain
d6b12aec623a4a6ba4e73ada5bd3061b.94c4b7b8.tor.exit.validator.1aeo.com
DNS Result
Resolved to 64.65.4.1
Cross-Validation
4/4 instances succeeded
First Hop
yaleRroTatsuJ (DE) 7C669EE84FA3BD039FB8C09A3FA785C585ECB990
Exit Address Used
204.8.156.142
Per-Instance Results
Cross Validation Attempt 1: Success, 16.8s (cv1_w3)
Cross Validation Attempt 2: Success, 20.3s (cv2_w3)
Cross Validation Attempt 3: Success, 20.0s (cv3_w3)
Cross Validation Attempt 4: Success, 22.5s (cv4_w3)
Tested: 2026-11-07 20:12:47 UTC
Source: exitdnshealth.1aeo.com
IPv4 Exit Policy Summary
reject: 
  25
  119
  135-139
  445
  563
  1214
  4661-4666
  6346-6429
  6699
  6881-6999
IPv6 Exit Policy Summary
None
Full Exit Policy
reject 0.0.0.0/8:*
reject 169.254.0.0/16:*
reject 127.0.0.0/8:*
reject 192.168.0.0/16:*
reject 10.0.0.0/8:*
reject 172.16.0.0/12:*
reject 128.197.0.0/16:*
reject 155.41.0.0/16:*
reject 168.122.0.0/16:*
reject 192.12.185.0/24:*
reject 192.12.186.0/24:*
reject 192.12.187.0/24:*
reject 192.12.188.0/24:*
reject 192.12.189.0/24:*
reject 192.12.190.0/24:*
reject 192.12.191.0/24:*
reject 192.5.206.0/24:*
reject 192.5.207.0/24:*
reject 192.5.208.0/24:*
reject 192.54.224.0/24:*
reject 204.8.152.0/21:*
reject *:25
reject *:119
reject *:135-139
reject *:445
reject *:563
reject *:1214
reject *:4661-4666
reject *:6346-6429
reject *:6699
reject *:6881-6999
accept *:*

Last fetch was at Sun, 08 Nov 2026 08:06:52 GMT.

Consensus Evaluation

Data from Tor CollecTor (authority votes, fetched 2026-11-08 08:01:41).

Per-Authority Details

Each cell shows: your measured value | authority threshold. Green = meets, red = below. Flags: green = all authorities agree, yellow = partial.

Authority Running Valid Exit MiddleOnly BW Scan
(Authority)		 v4 Flags Fast (Relay|T) Guard BW (Relay|Threshold) Guard WFU (M|T) Guard TK (M|T) Stable MTBF (M|T) Stable Uptime (Relay|T) HSDir WFU (M|T) HSDir TK (M|T) Desc Published Cons Wt (Authority)
bastet (US) Yes Yes Yes — Y Yes Running, Valid, V2Dir, Fast, Exit 61.8 Mbit/s | 816.0 Kbit/s 61.8 Mbit/s | 184.0 Mbit/s OR 16.0 Mbit/s 98.6% | 98% 15.6d | 8d 4.4d | 9.7d 3.8d | 5.7d 98.6% | 98.0% 15.6d | 1.0d 2026-11-06 01:31:23 88.0 Kbit/s
dannenberg (DE) Yes Yes Yes — Y Yes Running, Valid, V2Dir, Fast, Stable, Guard, Exit 61.8 Mbit/s | 816.0 Kbit/s 61.8 Mbit/s | 280.0 Mbit/s OR 16.0 Mbit/s 99.3% | 98% 17.6d | 8d 6.5d | 11.2d 3.8d | 3.4d 99.3% | 98.0% 17.6d | 1.0d 2026-11-07 13:31:25 46.4 Kbit/s
dizum (NL) Yes Yes Yes — N Yes Running, Valid, V2Dir, Fast, Exit 61.8 Mbit/s | 816.0 Kbit/s 61.8 Mbit/s | 80.0 Mbit/s OR 16.0 Mbit/s 97.9% | 98% 15.1d | 8d 4.9d | 8.6d 3.8d | 3.4d 97.9% | 98.0% 15.1d | 1.0d 2026-11-07 13:31:25 50.3 Kbit/s
faravahar (US) Yes Yes Yes — Y Yes Running, Valid, V2Dir, Fast, Stable, Guard, Exit 61.8 Mbit/s | 816.0 Kbit/s 61.8 Mbit/s | 80.0 Mbit/s OR 16.0 Mbit/s 99.1% | 98% 17.3d | 8d 5.7d | 8.0d 3.8d | 3.3d 99.1% | 98.0% 17.3d | 1.0d 2026-11-07 13:31:25 50.3 Kbit/s
gabelmoo (DE) Yes Yes Yes — Y Yes Running, Valid, V2Dir, Fast, Stable, Guard, Exit 61.8 Mbit/s | 816.0 Kbit/s 61.8 Mbit/s | 264.0 Mbit/s OR 16.0 Mbit/s 99.1% | 98% 17.3d | 8d 6.4d | 12.9d 3.8d | 3.3d 99.1% | 98.0% 17.3d | 1.0d 2026-11-07 13:31:25 59.2 Kbit/s
longclaw (US) Yes Yes Yes — Y Yes Running, Valid, V2Dir, Fast, Stable, Guard, Exit 61.8 Mbit/s | 816.0 Kbit/s 61.8 Mbit/s | 80.0 Mbit/s OR 16.0 Mbit/s 99.2% | 98% 17.0d | 8d 6.4d | 13.2d 3.8d | 3.3d 99.2% | 98.0% 17.0d | 1.0d 2026-11-07 13:31:25 50.3 Kbit/s
maatuska (SE) Yes Yes Yes — N Yes Running, Valid, V2Dir, Fast, Exit 61.8 Mbit/s | 816.0 Kbit/s 61.8 Mbit/s | 80.0 Mbit/s OR 16.0 Mbit/s 98.3% | 98% 15.6d | 8d 2.6d | 3.2d 3.8d | 3.3d 98.3% | 98.0% 15.6d | 1.0d 2026-11-07 13:31:25 50.3 Kbit/s
moria1 (US) Yes Yes Yes — Y Yes Running, Valid, V2Dir, Fast, Stable, Guard, Exit 61.8 Mbit/s | 8.4 Mbit/s 61.8 Mbit/s | 184.0 Mbit/s OR 16.0 Mbit/s 98.6% | 98% 9.8d | 8d 12974.8d | 6577.2d 3.8d | 3.3d 98.6% | 98.0% 9.8d | 9.9d 2026-11-07 13:31:25 88.0 Kbit/s
tor26 (AT) Yes Yes Yes — Y Yes Running, Valid, V2Dir, Fast, Stable, Guard, Exit 61.8 Mbit/s | 816.0 Kbit/s 61.8 Mbit/s | 256.0 Mbit/s OR 16.0 Mbit/s 99.3% | 98% 18.7d | 8d 7.1d | 13.0d 3.8d | 3.4d 99.3% | 98.0% 18.7d | 1.0d 2026-11-07 13:31:25 48.0 Kbit/s

— = not tested/available • Format: relay value | authority threshold • WFU = Weighted Fractional Uptime • TK = Time Known

Bandwidth Values Explained:
Relay Reported = Your relay's self-reported bandwidth from its descriptor (observed_bandwidth). Used for flag eligibility (Guard, Fast).
Authority Measured = Bandwidth measured by authority's sbws scanner. Used for consensus weight (path selection probability).
Why different? Authorities verify your reported bandwidth independently. 6 of 9 authorities run bandwidth scanners; 3 use relay-reported values directly.
Stable Uptime (Two Data Sources):
Relay Uptime = From Onionoo API (last_restarted field). Self-reported uptime from descriptor. Same value for all authorities.
Authority Threshold = From CollecTor vote files (flag-thresholds stable-uptime). Each authority may have different thresholds.
Why two sources? Vote files contain authority thresholds but not per-relay uptime values. Onionoo aggregates relay descriptors which include uptime.