View Relay "COtto"
Fingerprint: 4E8BF739B5E7835776EDD72CF9CAA402ACE00055 |
Operator: ftp.halifax.rwth-aachen.de v3
(9 relays)
✓ Validated
|
Family: 9 relays
|
pgp:8D41788E90924014... |
AS24940
|
Germany
|
Linux
- Consensus
- In Consensus (9/9 Directory Auths)
- BW Verified
- 4/6 BW Auths Measured 65 Kbit/s Median
- Stability
- Not Overloaded | UP 3w 3d 20h ago | UP 99% (1M)
- Reachability
- IPv4: 9/9 | v6: 8/8 (Directory Auths)
- BW Weight
- 0.00% of Network | 69 Mbit/s Observed By Relay
- Version
- 0.4.9.11 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.
Addresses
- OR Address
-
c-otto.de
157.90.112.145:9001
[2a01:4f8:c2c:e8a0::1]:9001
Reachability (Directory Authorities)
- IPv4
- 9/9
- IPv6
- 8/8 (1 don't test)
Location
- Country
-
Germany
- Interactive Map
- View in RouteFluxMap
Eligible Flags (7):
Running: 9/9 | Valid: 9/9 | V2Dir: 9/9 | Fast: 9/9 | Stable: 9/9 | HSDir: 8/9 | Guard: 9/9 | Exit: 0/9
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 |
| IPv6 Reachability | Meets (8/8 DA) | 8/8 tested authorities reached relay | ≥5/8 tested (majority) (≥5/8 DA) | |
| 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) | 69.0 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 | Partial (8/9 DA) | Median: 25.2d (9/9 DA above threshold) Min/Max: 14.5d / 2069.5d (9/9 DA, Voting / Total Eligible) |
≥7.8d - 13.4d (varies) (≥5/9 DA) [Stricter] moria1: ≥7108.7d |
| Uptime | Meets (9/9 DA) | 24.9d (R) | ≥9.8d - 10.2d (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 (9/9 DA) | 9/9 DA assigned Stable | ≥7.8d - 13.4d (varies) (≥5/9 DA) [Stricter] moria1: ≥7108.7d |
|
| Prereq: V2Dir | Meets (9/9 DA) | 9/9 DA assigned V2Dir | Tunnelled directory via ORPort or DirPort (≥5/9 DA) | |
| WFU | Meets (9/9 DA) | Median: 100.0% (9/9 DA above threshold) Min/Max: 99.5% / 100.0% (9/9 DA, Voting / Total Eligible) |
≥98.0% (≥5/9 DA) | |
| Time Known | Meets (8/9 DA) | Median: 27.1d (9/9 DA above threshold) Min/Max: 9.7d / 59.0d (9/9 DA, Voting / Total Eligible) |
≥1.0d (most) (≥5/9 DA) [Stricter] moria1: ≥9.8d |
|
| 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 (9/9 DA) | 9/9 DA assigned Stable | ≥7.8d - 13.4d (varies) (≥5/9 DA) [Stricter] moria1: ≥7108.7d |
|
| Prereq: V2Dir | Meets (9/9 DA) | 9/9 DA assigned V2Dir | Tunnelled directory via ORPort or DirPort (≥5/9 DA) | |
| WFU | Meets (9/9 DA) | Median: 100.0% (9/9 DA above threshold) Min/Max: 99.5% / 100.0% (9/9 DA, Voting / Total Eligible) |
≥98% (≥5/9 DA) | |
| Time Known | Meets (9/9 DA) | Median: 27.1d (9/9 DA above threshold) Min/Max: 9.7d / 59.0d (9/9 DA, Voting / Total Eligible) |
≥8 days (≥5/9 DA) | |
| Bandwidth | Meets (9/9 DA) | 69.0 Mbit/s (R) | ≥16.0 Mbit/s (Tor spec minimum) OR ≥80.0 Mbit/s-320.0 Mbit/s (≥5/9 DA) | |
| Exit | Exit Policy | Below (0/9 DA) | Port 80: No | Port 443: No (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 2026-08-24 02:01:17).
Capacity (Relay Reported)
- Observed Bandwidth
- 69.04 Mbit/s
- Advertised Bandwidth
- 65.54 Mbit/s
- Rate Limit
- 65.54 Mbit/s
- Burst Limit
- 131.07 Mbit/s
- Total Data
-
1.4 PB
(5 years)
1mo: 23 TB | 6mo: 129 TB | 1y: 246 TB | 5y: 1.4 PB
Measurement (Directory Authority Verified)
Source: CollecTor — fetched 2026-08-24 02:01:17
- Measured By
-
4/6
Bandwidth Authorities
Not measured by: faravahar, longclaw - Median Measurement
- 65.5 Kbit/s
- Min / Max
- 45.6 Kbit/s / 96.0 Kbit/s
- Deviation
- 50.4 Kbit/s [Warning] High variation
Network Participation:
Consensus Weight:
0.0036% of network
(48th pctl)
|
Guard:
0.0063% (33th pctl) |
Middle:
0.0044% (45th pctl) |
Exit:
N/A
Uptime Metrics
- Current Status
- UP 3w 3d 20h ago
- Overall Uptime (1M/6M/1Y/5Y)
- 99.9%/99.9%/99.9%/99.8%
- Flag Uptime (1M/6M/1Y/5Y)
- Matches Overall Uptime (99.9%/99.9%/99.9%/99.8%)
- Hibernating
- No
Timestamps
- First Seen
- 5y 1mo 1w ago (2021-07-14 15:00:00)
- Last Seen
- 3h 2m 57s ago (2026-08-23 23:00:00)
- Last Restarted
- 3w 3d 20h ago (2026-07-30 05:16:01)
- Last Changed Address
- 2026-04-06 23:00:00
Overload Status:
Not Overloaded — No overload conditions reported.
Operator Identity
Source: AROI Validation API — 2026-08-23 18:00 UTC
- AROI Domain (?)
- ftp.halifax.rwth-aachen.de
- Operator Validation
- Validated (9/9 relays)
- This Relay
- Validated (uri-familyid-ed25519)
- Contact
- pgp:8D41788E90924014 email:tor[]c-otto.de url:ftp.halifax.rwth-aachen.de proof:uri-familyid-ed25519 ciissversion:3
Family Configuration
- Family Support
- Happy Families (9) — Has family-cert in server descriptor (guide) | View Full Family (9)
Happy Families (family-cert)
- Effective Members: 9
008EAE223B110C8EDEE20D06FB0DD4C43E3E0142 1815E96EDB9444E9CD0D11FB9BB695B687C21E82 27E1B97D9491013EF48479D4F47002F3358E0D92 2F3B9DFFDF23DAC9CCC8E223EAB6423535DDC21E 4E8BF739B5E7835776EDD72CF9CAA402ACE00055 (this relay) 63F7DC3102C95E010F83B2041A5938909E4ABAF2 A86B8708BAAC8A1FE66F0FE9270D23A364A1601B ACB898B28ACABBD78F23AF2FB06FC864A4111646 DA78144C70B15AE3EB04DE340DC8FADB80F1F495
MyFamily (legacy declarations) — none
DNS Health
Not an exit relay — DNS health testing does not apply.Last fetch was at Mon, 24 Aug 2026 02:02:49 GMT.
Data from Tor CollecTor (authority votes, fetched 2026-08-24 02:01:17).
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 | v6 | 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 | No | — | N | Yes | Yes | Running, Valid, V2Dir, Fast, Stable, HSDir, Guard | 69.0 Mbit/s | 816.0 Kbit/s | 69.0 Mbit/s | 80.0 Mbit/s OR 16.0 Mbit/s | 99.9% | 98% | 26.1d | 8d | 21.6d | 11.2d | 24.9d | 9.8d | 99.9% | 98.0% | 26.1d | 1.0d | 2026-08-23 19:17:32 | 65.5 Kbit/s |
| dannenberg (DE) | Yes | Yes | No | — | Y | Yes | Yes | Running, Valid, V2Dir, Fast, Stable, HSDir, Guard | 69.0 Mbit/s | 816.0 Kbit/s | 69.0 Mbit/s | 320.0 Mbit/s OR 16.0 Mbit/s | 100.0% | 98% | 27.1d | 8d | 24.3d | 13.4d | 24.9d | 11.8d | 100.0% | 98.0% | 27.1d | 1.0d | 2026-08-23 19:17:32 | 96.0 Kbit/s |
| dizum (NL) | Yes | Yes | No | — | N | Yes | Yes | Running, Valid, V2Dir, Fast, Stable, HSDir, Guard | 69.0 Mbit/s | 816.0 Kbit/s | 69.0 Mbit/s | 80.0 Mbit/s OR 16.0 Mbit/s | 100.0% | 98% | 26.2d | 8d | 23.6d | 12.8d | 24.9d | 9.8d | 100.0% | 98.0% | 26.2d | 1.0d | 2026-08-23 19:17:32 | 65.5 Kbit/s |
| faravahar (US) | Yes | Yes | No | — | Y | Yes | Yes | Running, Valid, V2Dir, Fast, Stable, HSDir, Guard | 69.0 Mbit/s | 816.0 Kbit/s | 69.0 Mbit/s | 80.0 Mbit/s OR 16.0 Mbit/s | 100.0% | 98% | 28.2d | 8d | 25.2d | 12.7d | 24.9d | 10.2d | 100.0% | 98.0% | 28.2d | 1.0d | 2026-08-23 19:17:32 | 65.5 Kbit/s |
| gabelmoo (DE) | Yes | Yes | No | — | Y | Yes | Yes | Running, Valid, V2Dir, Fast, Stable, HSDir, Guard | 69.0 Mbit/s | 816.0 Kbit/s | 69.0 Mbit/s | 296.0 Mbit/s OR 16.0 Mbit/s | 100.0% | 98% | 48.2d | 8d | 40.2d | 13.7d | 24.9d | 10.2d | 100.0% | 98.0% | 48.2d | 1.0d | 2026-08-23 19:17:32 | 64.8 Kbit/s |
| longclaw (US) | Yes | Yes | No | — | Y | Yes | — | Running, Valid, V2Dir, Fast, Stable, HSDir, Guard | 69.0 Mbit/s | 816.0 Kbit/s | 69.0 Mbit/s | 80.0 Mbit/s OR 16.0 Mbit/s | 100.0% | 98% | 59.0d | 8d | 54.6d | 17.0d | 24.9d | 10.2d | 100.0% | 98.0% | 59.0d | 1.0d | 2026-08-23 19:17:32 | 65.5 Kbit/s |
| maatuska (SE) | Yes | Yes | No | — | N | Yes | Yes | Running, Valid, V2Dir, Fast, Stable, HSDir, Guard | 69.0 Mbit/s | 816.0 Kbit/s | 69.0 Mbit/s | 80.0 Mbit/s OR 16.0 Mbit/s | 99.5% | 98% | 22.6d | 8d | 14.5d | 7.8d | 24.9d | 10.1d | 99.5% | 98.0% | 22.6d | 1.0d | 2026-08-23 19:17:32 | 65.5 Kbit/s |
| moria1 (US) | Yes | Yes | No | — | Y | Yes | Yes | Running, Valid, V2Dir, Fast, Stable, Guard | 69.0 Mbit/s | 8.4 Mbit/s | 69.0 Mbit/s | 208.0 Mbit/s OR 16.0 Mbit/s | 99.9% | 98% | 9.7d | 8d | 2069.5d | 7108.7d | 24.9d | 9.8d | 99.9% | 98.0% | 9.7d | 9.8d | 2026-08-23 19:17:32 | 45.6 Kbit/s |
| tor26 (AT) | Yes | Yes | No | — | Y | Yes | Yes | Running, Valid, V2Dir, Fast, Stable, HSDir, Guard | 69.0 Mbit/s | 816.0 Kbit/s | 69.0 Mbit/s | 288.0 Mbit/s OR 16.0 Mbit/s | 100.0% | 98% | 33.5d | 8d | 30.0d | 13.5d | 24.9d | 10.6d | 100.0% | 98.0% | 33.5d | 1.0d | 2026-08-23 19:17:32 | 88.0 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.
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.
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.