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Entities

Prefixes

A network block, the providers within it, and the collateral of blocking it.

Answers the question a block decision turns on: which providers and how many addresses sit inside this range.

Shared prefixes

Prefixes carrying more than one provider are marked shared, with each provider's share. 37.19.196.0/23 in AS212238 carries NordVPN at 45.8 %, PIA at 36.1 % and CyberGhost at 18.1 %. Action against one provider necessarily affects all three.

Coverage and density

FieldMeans
observedIpsAddresses in this prefix we have actually seen
networkSizeAddresses the prefix contains
coverageThe ratio — how much of the block we can speak to

Low coverage is not evidence of absence. A /16 with forty observed addresses supports statements about those forty only. The ratio is shown so the limit is visible.

37.19.196.0/23Three providers in one block.Open →