Data sources & methodology

Every netblock's org attribution comes from one of several tiers, in descending confidence. "GLEIF-matched" means the cluster resolved to a verified Legal Entity Identifier; "BGP-inherited" means a sub-allocation's identity isn't independently known and it inherits its announcing carrier's attribution — a lower-confidence but still useful signal.

Netblock counts by registry / routing source.

How much of the world's delegated address space this index attributes, weighted by addresses (not object counts). The denominator is every allocation and assignment all five RIRs have ever published in their delegated-extended stats. Registrant-grade = verified legal entity (GLEIF) or registry records; carrier-inferred = attributed to the announcing/parent carrier — useful, but an inference; unresolved = indexed but not attributed; not indexed = delegated space we hold no object for yet. Computed 2026-11-01.

IPv4

IPv6

These blocks are ingested from each provider's own published list, then checked that our clustering still attributes them to a cluster carrying that provider's name — this measures recall against a source we already hold, not precision, and it is self-corroborating rather than independent ground truth. It covers only these seven providers; see "Attribution quality" above and the accuracy page's registrant-grade figure for the honest picture across the whole dataset. Recomputed every pipeline run; a drop here is a clustering-regression alarm — 100% is partly guaranteed by how the check is built, not proof of overall accuracy.

When each ingestion/enrichment step last completed successfully. The full pipeline runs weekly, with a scheduled watchdog that flags failures and anomalous row-count deviations.