{"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":"52.144.112.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/52.144.112.0-52.144.119.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2016-08-29)"},"current_holder":{"rir":"ARIN","org":"Metronet","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":19665,"date":"2020-01-02T14:20:59Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Lightspeed Communications, LLC","recipient_org":"Metronet","range":"52.144.112.0/21","log":"ARIN"},{"id":7629,"date":"2016-08-29T20:04:41Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"E.I. du Pont de Nemours and Co., Inc.","recipient_org":"Lightspeed Communications, LLC","range":"52.144.112.0/21","log":"ARIN"}],"events":[{"event_id":"b96884c4a28f1b52","registry":"ARIN","report_date":"2020-01-02","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"52.144.112.0/21","start":"52.144.112.0","end":"52.144.119.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Lightspeed Communications, LLC","recipient_organization":"Metronet","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:48+00:00","page":"https://rirtracker.com/ip/52.144.112.0-52.144.119.255/#e-b96884c4a28f1b52","report_page":"https://rirtracker.com/arin/reports/2020-01-02/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/52.144.112.0-52.144.119.255.json","observed":"Merger/acquisition: Lightspeed Communications, LLC (ARIN) to Metronet (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Lightspeed Communications, LLC (ARIN) to Metronet (ARIN) on 2020-01-02 14:20 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 2020-01-02 14:20 UTC, Lightspeed Communications, LLC (ARIN) to Metronet (ARIN); resources moved: 52.144.112.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200101.gz","retrieved_at":"2026-10-12T22:16:52+00:00","summary":"ARIN delegated statistics 2020-01-01 (produced 2020-01-01T15:00:13+00:00), before the report: allocated (dated 2016-08-29)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200103.gz","retrieved_at":"2026-10-12T22:17:05+00:00","summary":"ARIN delegated statistics 2020-01-03 (produced 2020-01-03T15:00:14+00:00), after the report: allocated (dated 2016-08-29)"}]},{"event_id":"eb1965c09b5ef654","registry":"ARIN","report_date":"2016-08-29","source":"arin_issued","raw_action":"ADD","raw_line":"Add 52.144.112.0-52.144.119.255","resource_type":"ipv4","resource":"52.144.112.0/21","start":"52.144.112.0","end":"52.144.119.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"E.I. du Pont de Nemours and Co., Inc.","recipient_organization":"Lightspeed Communications, LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:37+00:00","page":"https://rirtracker.com/ip/52.144.112.0-52.144.119.255/#e-eb1965c09b5ef654","report_page":"https://rirtracker.com/arin/reports/2016-08-29/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/52.144.112.0-52.144.119.255.json","piece_of":{"resource":"52.0.0.0/8","page":"https://rirtracker.com/ip/52.0.0.0-52.255.255.255/"},"explanation":"ARIN's transfer log records a transfer from E.I. du Pont de Nemours and Co., Inc. (ARIN) to Lightspeed Communications, LLC (ARIN) on 2016-08-29 20:04 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/2016-August/002818.html","retrieved_at":"2026-10-12T18:39:19+00:00","summary":"ARIN-Issued report for 2016-08-29: \"Add 52.144.112.0-52.144.119.255\""},{"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 2016-08-29 20:04 UTC, E.I. du Pont de Nemours and Co., Inc. (ARIN) to Lightspeed Communications, LLC (ARIN); resources moved: 52.144.112.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160828.gz","retrieved_at":"2026-10-12T21:15:26+00:00","summary":"ARIN delegated statistics 2016-08-28 (produced 2016-08-28T05:10:08+00:00), before the report: assigned (dated 1991-12-19)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160830.gz","retrieved_at":"2026-10-12T21:15:31+00:00","summary":"ARIN delegated statistics 2016-08-30 (produced 2016-08-30T05:09:21+00:00), after the report: allocated (dated 2016-08-29)"}]}],"classification_history":{"b96884c4a28f1b52":[{"raw_change_id":559823,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:48+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Lightspeed Communications, LLC (ARIN) to Metronet (ARIN) on 2020-01-02 14:20 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."}],"eb1965c09b5ef654":[{"raw_change_id":145986,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:35:53+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from E.I. du Pont de Nemours and Co., Inc. (ARIN) to Lightspeed Communications, LLC (ARIN) on 2016-08-29 20:04 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":145986,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:53+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from E.I. du Pont de Nemours and Co., Inc. (ARIN) to Lightspeed Communications, LLC (ARIN) on 2016-08-29 20:04 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":145986,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:31+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from E.I. du Pont de Nemours and Co., Inc. (ARIN) to Lightspeed Communications, LLC (ARIN) on 2016-08-29 20:04 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":145986,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:37+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from E.I. du Pont de Nemours and Co., Inc. (ARIN) to Lightspeed Communications, LLC (ARIN) on 2016-08-29 20:04 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2016-08-29)"}}