{"classifier_version":"1.4.0","documentation":"https://rirtracker.com/api/","disclaimer":"This site independently analyzes publicly available Internet number-resource records. It is not affiliated with or endorsed by ARIN, the RIPE NCC, APNIC, LACNIC, AFRINIC, the Number Resource Organization (NRO), or any other Regional Internet Registry. Classifications and hold-expiration dates are evidence-based interpretations and do not constitute confirmation that a resource is available for issuance or transfer.","resource":"170.120.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/170.120.0.0-170.120.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2020-11-19)"},"current_holder":{"rir":"ARIN","org":"Amazon Technologies Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":22141,"date":"2020-11-19T20:34:22Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"MAGELLAN HEALTH, INC.","recipient_org":"Amazon Technologies Inc.","range":"170.120.0.0/16","log":"ARIN"},{"id":21831,"date":"2020-11-03T22:26:12Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Charter Medical Corporation","recipient_org":"MAGELLAN HEALTH, INC.","range":"170.120.0.0/16","log":"ARIN"}],"events":[{"event_id":"f8b73e33543066dc","registry":"ARIN","report_date":"2020-11-19","source":"arin_issued","raw_action":"ADD","raw_line":"Add 170.120.0.0-170.120.255.255","resource_type":"ipv4","resource":"170.120.0.0/16","start":"170.120.0.0","end":"170.120.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"MAGELLAN HEALTH, INC.","recipient_organization":"Amazon Technologies Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:01+00:00","page":"https://rirtracker.com/ip/170.120.0.0-170.120.255.255/#e-f8b73e33543066dc","report_page":"https://rirtracker.com/arin/reports/2020-11-19/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/170.120.0.0-170.120.255.255.json","explanation":"ARIN's transfer log records a transfer from MAGELLAN HEALTH, INC. (ARIN) to Amazon Technologies Inc. (ARIN) on 2020-11-19 20:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2020-November/004360.html","retrieved_at":"2026-10-12T18:41:07+00:00","summary":"ARIN-Issued report for 2020-11-19: \"Add 170.120.0.0-170.120.255.255\""},{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:20+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2020-11-19 20:34 UTC, MAGELLAN HEALTH, INC. (ARIN) to Amazon Technologies Inc. (ARIN); resources moved: 170.120.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20201118.gz","retrieved_at":"2026-10-12T22:33:37+00:00","summary":"ARIN delegated statistics 2020-11-18 (produced 2020-11-18T15:00:13+00:00), before the report: assigned (dated 1994-04-18)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20201120.gz","retrieved_at":"2026-10-12T22:33:50+00:00","summary":"ARIN delegated statistics 2020-11-20 (produced 2020-11-20T15:00:13+00:00), after the report: allocated (dated 2020-11-19)"}]},{"event_id":"e5ad843ed24bc22a","registry":"ARIN","report_date":"2020-11-03","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"170.120.0.0/16","start":"170.120.0.0","end":"170.120.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Charter Medical Corporation","recipient_organization":"MAGELLAN HEALTH, INC.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:51+00:00","page":"https://rirtracker.com/ip/170.120.0.0-170.120.255.255/#e-e5ad843ed24bc22a","report_page":"https://rirtracker.com/arin/reports/2020-11-03/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/170.120.0.0-170.120.255.255.json","observed":"Merger/acquisition: Charter Medical Corporation (ARIN) to MAGELLAN HEALTH, INC. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Charter Medical Corporation (ARIN) to MAGELLAN HEALTH, INC. (ARIN) on 2020-11-03 22:26 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.","evidence":[{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:20+00:00","summary":"Transfer log: MERGER_ACQUISITION on 2020-11-03 22:26 UTC, Charter Medical Corporation (ARIN) to MAGELLAN HEALTH, INC. (ARIN); resources moved: 170.120.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20201102.gz","retrieved_at":"2026-10-12T22:32:47+00:00","summary":"ARIN delegated statistics 2020-11-02 (produced 2020-11-02T15:00:13+00:00), before the report: assigned (dated 1994-04-18)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20201104.gz","retrieved_at":"2026-10-12T22:32:52+00:00","summary":"ARIN delegated statistics 2020-11-04 (produced 2020-11-04T15:00:13+00:00), after the report: assigned (dated 1994-04-18)"}]}],"classification_history":{"f8b73e33543066dc":[{"raw_change_id":168568,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:50:26+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from MAGELLAN HEALTH, INC. (ARIN) to Amazon Technologies Inc. (ARIN) on 2020-11-19 20:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":168568,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:56+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from MAGELLAN HEALTH, INC. (ARIN) to Amazon Technologies Inc. (ARIN) on 2020-11-19 20:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":168568,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:41+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from MAGELLAN HEALTH, INC. (ARIN) to Amazon Technologies Inc. (ARIN) on 2020-11-19 20:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":168568,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:01+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from MAGELLAN HEALTH, INC. (ARIN) to Amazon Technologies Inc. (ARIN) on 2020-11-19 20:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"e5ad843ed24bc22a":[{"raw_change_id":561196,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:51+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Charter Medical Corporation (ARIN) to MAGELLAN HEALTH, INC. (ARIN) on 2020-11-03 22:26 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it."}]},"arin_statistics_now":{"status":"allocated (dated 2020-11-19)"}}