Proposal 137801 Review | Lorimer 
- CO.DELTA △
VOTE: YES
TLDR: Replaces a down and degraded node with two up ones. The sole DFINITY node is removed, but replace with another DFINITY node, conforming to business rules relating to subnet recovery procedures. Decentralisation stats remain within IC Target Topology specification. Clustering within Europe is increased by country diversity is also increased.
Decentralisation Stats
Subnet node distance stats (distance between any 2 nodes in the subnet) →
| Smallest Distance | Average Distance | Largest Distance | |
|---|---|---|---|
| EXISTING | 0 km | 7377.761 km | 16465.583 km |
| PROPOSED | 1.636 km (+∞%) | 6914.14 km (-6.3%) | 16465.583 km |
This proposal slightly reduces decentralisation, considered purely in terms of geographic distance (and therefore there’s a slight theoretical reduction in localised disaster resilience). 
Subnet characteristic counts →
| Continents | Countries | Data Centers | Owners | Node Providers | Node Operator | |
|---|---|---|---|---|---|---|
| EXISTING | 4 | 10 | 13 | 13 | 13 | 13 |
| PROPOSED | 4 | 11 (+9.1%) | 13 | 13 | 13 | 13 |
This proposal slightly improves decentralisation in terms of jurisdiction diversity. 
Largest number of nodes with the same characteristic (e.g. continent, country, data center, etc.) →
| Continent | Country | Data Center | Owner | Node Provider | Node Operator | |
|---|---|---|---|---|---|---|
| EXISTING | 6 | 2 | 1 | 1 | 1 | 1 |
| PROPOSED | 7 (+16.67%) | 2 | 1 | 1 | 1 | 1 |
See here for acceptable limits → Motion 137147
The above subnet information is illustrated below, followed by a node reference table:
Map Description
- Red marker represents a removed node (transparent center for overlap visibility)
- Green marker represents an added node
- Blue marker represents an unchanged node
- Highlighted patches represent the country the above nodes sit within (red if the country is removed, green if added, otherwise grey)
- Light grey markers with yellow borders are examples of unassigned nodes that would be viable candidates for joining the subnet according to formal decentralisation coefficients (so this proposal can be viewed in the context of alternative solutions that are not being used)
Node Changes
| Action | Node | Status | Continent | Country | Data Center | Owner | Node Provider | Node Operator | |
|---|---|---|---|---|---|---|---|---|---|
| Remove |  |
||||||||
| Remove | |
||||||||
| Add | 6hkcx | UP | |
Europe | Switzerland | Zurich 2 (zh2) | Everyware | DFINITY Stiftung | wqyl3 |
| Add | r7few | UP | |
Europe | Romania | Bucharest (bu1) | M247 | Iancu Aurel | c5ssg |
Other Nodes
| Node | Status | Continent | Country | Data Center | Owner | Node Provider | Node Operator | |
|---|---|---|---|---|---|---|---|---|
| uajv3 | UP | |
Oceania | Australia | Queensland 1 (sc1) | NEXTDC | ANYPOINT PTY LTD | 6jel7 |
| z2tgr | UP | |
Europe | Belgium | Antwerp (an1) | Datacenter United | NODAO | k4aor |
| clfor | UP | |
North America | Canada | Vancouver (bc1) | Cyxtera | Blockchain Development Labs | feb2q |
| ctqez | UP | |
Europe | Switzerland | Zurich 4 (zh4) | Nine.Ch | Tomahawk.vc | paxme |
| ognrk | UP | |
Asia | Georgia | Tbilisi 1 (tb1) | Cloud9 | George Bassadone | yhfy4 |
| jux3z | UP | |
Asia | Hong Kong | HongKong 4 (hk4) | hkntt | Web3game | dg7of |
| abg3e | UP | |
Europe | Isle of Man | Douglas 1 (im1) | Manx Telecom | Blue Ant LLC | 4isre |
| ywdqr | UP | |
Europe | Isle of Man | Douglas 2 (im2) | Continent8 | Zarety LLC | ylbc3 |
| f6etz | UP | |
Asia | Singapore | Singapore 3 (sg3) | Racks Central | Protocol16 | vicvb |
| uw4qe | UP | |
Europe | Slovenia | Maribor (mb1) | Posita.si | BlockFinance | ozfkj |
| xszxr | UP | |
North America | United States of America (the) | Sterling (st1) | CyrusOne | MI Servers | tcn4t |
You may wish to follow the CO.DELTA known neuron if you found this analysis helpful.
CO.DELTA △
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Note that this analysis involved data provided by the IC-API, which is not open source. I’m in the process of switching over to more verifiable sources of this sort of information for future proposal reviews. See here for related discussion.