{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"atlas","mode":"comparison","updatedThrough":"2026-08-15","guardrail":"A bilateral atlas route preserves a sequence of declared edges for navigation and audit. A direct edge, common neighbor, or multi-hop path does not make the endpoints equivalent, establish ownership or control, assign liability, define an antitrust market, make unlike measures comparable, or show causation.","filters":{"layer":"all","layerMatched":true,"left":"topic:geographic-competition","leftMatched":true,"right":"report:rep-fixed-broadband-geography","rightMatched":true,"view":"paths"},"summary":{"nodeCount":5478,"edgeCount":19193,"sourceCount":0,"profileCount":5433,"nodeKindCount":13,"layerCount":4,"directEdgeCount":1,"disconnected":false,"eligibleEdgeCount":19193,"ledgerEdgeCount":1,"leftNeighborCount":17,"pathLimitReached":false,"rightNeighborCount":4,"sharedNeighborCount":0,"shortestHopCount":1,"shortestPathCount":1},"endpoints":{"left":{"id":"topic:geographic-competition","kind":"topic","label":"Geographic Competition","shortLabel":"Geographic Competition","description":"How does competitive structure vary across national, state, county, tract, route, and other local frames?","href":"/research/topics/geographic-competition","metricLabel":"Publication memberships","metricValue":"7","detail":"AR-T04 / 4 issue programs / 5 evidence lanes","status":"institutional research topic","year":2026,"color":"#ea580c","searchText":"ar-t04 geographic competition places how does competitive structure vary across national, state, county, tract, route, and other local frames? connect place-based concentration screens to their exact geography, source vintage, ownership rules, and local-market research needs. a statewide, county, tract, or national screen does not establish a legal geographic market. medians of local hhis are not interchangeable with one national hhi. area-level shares and distributions, ownership and entry histories, local prices and quality, commuting or procurement patterns, capacity, switching, and stable geographic definitions. local officials, researchers, journalists, and community advocates ar-sc-2026-01 the u.s. competition landscape ar-dn-2026-02 housing competition needs local ownership data ar-rb-2026-03 state banking structure, 2015-2025 ar-rb-2026-06 fixed broadband concentration across geographic scales, 2020-2024 ar-rb-2026-07 state individual insurance concentration, 2024 ar-ci-2026-04 geographic concentration screens point in different directions at different scales. ar-ci-2026-05 national fixed-broadband hhi rose while three geographic medians fell.","connectionCount":17},"right":{"id":"report:rep-fixed-broadband-geography","kind":"report","label":"Fixed Broadband Concentration Across Geographic Scales, 2020-2024","shortLabel":"Fixed Broadband Concent...","description":"A source-backed research brief on nine FCC fixed-broadband reporting periods, the divergent paths of national and subnational median HHI, and the public evidence needed to move from geographic screens to mechanisms and outcomes.","href":"/reports/fixed-broadband-geographic-concentration-2020-2024","metricLabel":"Evidence sources","metricValue":"1","detail":"1 linked market","status":"published","year":2026,"color":"#6366f1","searchText":"fixed broadband concentration across geographic scales, 2020-2024 national hhi rose while median state, county, and census-tract concentration fell a source-backed research brief on nine fcc fixed-broadband reporting periods, the divergent paths of national and subnational median hhi, and the public evidence needed to move from geographic screens to mechanisms and outcomes. a four-scale fcc concentration history showing why a rising national hhi and falling subnational medians must be read together without converting them into one market. federal communications commission internet access services figure 5, covering nine semiannual reporting periods from december 2020 through december 2024 for residential fixed connections meeting the 100/20 mbps threshold. the packet preserves the national hhi and medians of separately calculated state, county, and census-tract hhis as distinct geographic summaries.","connectionCount":4}},"shortestPaths":[{"id":"path:topic-publication:geographic-competition:AR-RB-2026-06","edges":[{"id":"topic-publication:geographic-competition:AR-RB-2026-06","type":"topic_publication","layer":"research","from":"topic:geographic-competition","to":"report:rep-fixed-broadband-geography","label":"Declared topic membership","detail":"AR-RB-2026-06, Fixed Broadband Concentration Across Geographic Scales, 2020-2024, carries the exact Geographic Competition publication-theme membership.","evidenceLabel":"Publication theme contract","sourceId":null,"sourceUrl":null,"confidenceLevel":"bounded","guardrail":"A topic-to-publication link records one exact editorial theme membership. It does not rank publication quality, evidence strength, importance, impact, or policy effect."}],"hopCount":1,"nodes":[{"id":"topic:geographic-competition","kind":"topic","label":"Geographic Competition","shortLabel":"Geographic Competition","description":"How does competitive structure vary across national, state, county, tract, route, and other local frames?","href":"/research/topics/geographic-competition","metricLabel":"Publication memberships","metricValue":"7","detail":"AR-T04 / 4 issue programs / 5 evidence lanes","status":"institutional research topic","year":2026,"color":"#ea580c","searchText":"ar-t04 geographic competition places how does competitive structure vary across national, state, county, tract, route, and other local frames? connect place-based concentration screens to their exact geography, source vintage, ownership rules, and local-market research needs. a statewide, county, tract, or national screen does not establish a legal geographic market. medians of local hhis are not interchangeable with one national hhi. area-level shares and distributions, ownership and entry histories, local prices and quality, commuting or procurement patterns, capacity, switching, and stable geographic definitions. local officials, researchers, journalists, and community advocates ar-sc-2026-01 the u.s. competition landscape ar-dn-2026-02 housing competition needs local ownership data ar-rb-2026-03 state banking structure, 2015-2025 ar-rb-2026-06 fixed broadband concentration across geographic scales, 2020-2024 ar-rb-2026-07 state individual insurance concentration, 2024 ar-ci-2026-04 geographic concentration screens point in different directions at different scales. ar-ci-2026-05 national fixed-broadband hhi rose while three geographic medians fell.","connectionCount":17},{"id":"report:rep-fixed-broadband-geography","kind":"report","label":"Fixed Broadband Concentration Across Geographic Scales, 2020-2024","shortLabel":"Fixed Broadband Concent...","description":"A source-backed research brief on nine FCC fixed-broadband reporting periods, the divergent paths of national and subnational median HHI, and the public evidence needed to move from geographic screens to mechanisms and outcomes.","href":"/reports/fixed-broadband-geographic-concentration-2020-2024","metricLabel":"Evidence sources","metricValue":"1","detail":"1 linked market","status":"published","year":2026,"color":"#6366f1","searchText":"fixed broadband concentration across geographic scales, 2020-2024 national hhi rose while median state, county, and census-tract concentration fell a source-backed research brief on nine fcc fixed-broadband reporting periods, the divergent paths of national and subnational median hhi, and the public evidence needed to move from geographic screens to mechanisms and outcomes. a four-scale fcc concentration history showing why a rising national hhi and falling subnational medians must be read together without converting them into one market. federal communications commission internet access services figure 5, covering nine semiannual reporting periods from december 2020 through december 2024 for residential fixed connections meeting the 100/20 mbps threshold. the packet preserves the national hhi and medians of separately calculated state, county, and census-tract hhis as distinct geographic summaries.","connectionCount":4}]}],"sharedNeighbors":[],"nodes":[{"id":"report:rep-fixed-broadband-geography","kind":"report","label":"Fixed Broadband Concentration Across Geographic Scales, 2020-2024","shortLabel":"Fixed Broadband Concent...","description":"A source-backed research brief on nine FCC fixed-broadband reporting periods, the divergent paths of national and subnational median HHI, and the public evidence needed to move from geographic screens to mechanisms and outcomes.","href":"/reports/fixed-broadband-geographic-concentration-2020-2024","metricLabel":"Evidence sources","metricValue":"1","detail":"1 linked market","status":"published","year":2026,"color":"#6366f1","searchText":"fixed broadband concentration across geographic scales, 2020-2024 national hhi rose while median state, county, and census-tract concentration fell a source-backed research brief on nine fcc fixed-broadband reporting periods, the divergent paths of national and subnational median hhi, and the public evidence needed to move from geographic screens to mechanisms and outcomes. a four-scale fcc concentration history showing why a rising national hhi and falling subnational medians must be read together without converting them into one market. federal communications commission internet access services figure 5, covering nine semiannual reporting periods from december 2020 through december 2024 for residential fixed connections meeting the 100/20 mbps threshold. the packet preserves the national hhi and medians of separately calculated state, county, and census-tract hhis as distinct geographic summaries.","connectionCount":4},{"id":"topic:geographic-competition","kind":"topic","label":"Geographic Competition","shortLabel":"Geographic Competition","description":"How does competitive structure vary across national, state, county, tract, route, and other local frames?","href":"/research/topics/geographic-competition","metricLabel":"Publication memberships","metricValue":"7","detail":"AR-T04 / 4 issue programs / 5 evidence lanes","status":"institutional research topic","year":2026,"color":"#ea580c","searchText":"ar-t04 geographic competition places how does competitive structure vary across national, state, county, tract, route, and other local frames? connect place-based concentration screens to their exact geography, source vintage, ownership rules, and local-market research needs. a statewide, county, tract, or national screen does not establish a legal geographic market. medians of local hhis are not interchangeable with one national hhi. area-level shares and distributions, ownership and entry histories, local prices and quality, commuting or procurement patterns, capacity, switching, and stable geographic definitions. local officials, researchers, journalists, and community advocates ar-sc-2026-01 the u.s. competition landscape ar-dn-2026-02 housing competition needs local ownership data ar-rb-2026-03 state banking structure, 2015-2025 ar-rb-2026-06 fixed broadband concentration across geographic scales, 2020-2024 ar-rb-2026-07 state individual insurance concentration, 2024 ar-ci-2026-04 geographic concentration screens point in different directions at different scales. ar-ci-2026-05 national fixed-broadband hhi rose while three geographic medians fell.","connectionCount":17}],"rows":[{"id":"topic-publication:geographic-competition:AR-RB-2026-06","layer":"research","relationshipType":"topic_publication","relationshipLabel":"Declared topic membership","fromId":"topic:geographic-competition","fromKind":"topic","fromLabel":"Geographic Competition","fromHref":"/research/topics/geographic-competition","toId":"report:rep-fixed-broadband-geography","toKind":"report","toLabel":"Fixed Broadband Concentration Across Geographic Scales, 2020-2024","toHref":"/reports/fixed-broadband-geographic-concentration-2020-2024","evidenceLabel":"Publication theme contract","evidenceDetail":"AR-RB-2026-06, Fixed Broadband Concentration Across Geographic Scales, 2020-2024, carries the exact Geographic Competition publication-theme membership.","sourceId":null,"sourceUrl":null,"confidenceLevel":"bounded","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A topic-to-publication link records one exact editorial theme membership. It does not rank publication quality, evidence strength, importance, impact, or policy effect."}]}