{"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":"147.178.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/147.178.0.0-147.178.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1991-07-02)"},"current_holder":{"rir":"ARIN","org":"Dell, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":31015,"date":"2023-03-20T11:22:32Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"EMC Corporation","recipient_org":"Dell, Inc.","range":"147.178.0.0/16","log":"ARIN"}],"events":[{"event_id":"6109304656258f53","registry":"ARIN","report_date":"2023-03-20","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"147.178.0.0/16","start":"147.178.0.0","end":"147.178.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"EMC Corporation","recipient_organization":"Dell, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:07+00:00","page":"https://rirtracker.com/ip/147.178.0.0-147.178.255.255/#e-6109304656258f53","report_page":"https://rirtracker.com/arin/reports/2023-03-20/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/147.178.0.0-147.178.255.255.json","observed":"Merger/acquisition: EMC Corporation (ARIN) to Dell, Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from EMC Corporation (ARIN) to Dell, Inc. (ARIN) on 2023-03-20 11:22 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 2023-03-20 11:22 UTC, EMC Corporation (ARIN) to Dell, Inc. (ARIN); resources moved: 147.178.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230319.gz","retrieved_at":"2026-10-12T23:17:36+00:00","summary":"ARIN delegated statistics 2023-03-19 (produced 2023-03-19T13:00:11+00:00), before the report: allocated (dated 1991-07-02)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230321.gz","retrieved_at":"2026-10-12T23:17:40+00:00","summary":"ARIN delegated statistics 2023-03-21 (produced 2023-03-21T13:00:11+00:00), after the report: allocated (dated 1991-07-02)"}]},{"event_id":"115ac14af3772cc2","registry":"ARIN","report_date":"2015-04-10","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"147.178.0.0/16","start":"147.178.0.0","end":"147.178.255.255","classification":"REMOVED_REASON_UNKNOWN","classification_label":"Removed (return, revocation or reclamation not publicly distinguishable)","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Possible future reissue candidate after hold","inventory_effect_code":"HOLD_CANDIDATE","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:00:45+00:00","page":"https://rirtracker.com/ip/147.178.0.0-147.178.255.255/#e-115ac14af3772cc2","report_page":"https://rirtracker.com/arin/reports/2015-04-10/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/147.178.0.0-147.178.255.255.json","observed":"147.178.0.0/16 assigned on 2015-04-10, reserved on 2015-04-11","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_days":60,"estimated_hold_end":"2015-06-09","availability_statement":"Possible reissue candidate after this date; not confirmed available"},"explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 1991-07-02) on 2015-04-09 and reserved on 2015-04-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2015-06-09. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150411.gz","retrieved_at":"2026-10-12T20:50:58+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 147.178.0.0/16 assigned on 2015-04-10, reserved on 2015-04-11"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150409.gz","retrieved_at":"2026-10-12T20:50:53+00:00","summary":"ARIN delegated statistics 2015-04-09 (produced 2015-04-09T05:04:03+00:00), before the report: assigned (dated 1991-07-02)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150411.gz","retrieved_at":"2026-10-12T20:50:58+00:00","summary":"ARIN delegated statistics 2015-04-11 (produced 2015-04-11T05:03:59+00:00), after the report: reserved"}]}],"classification_history":{"6109304656258f53":[{"raw_change_id":567849,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:07+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from EMC Corporation (ARIN) to Dell, Inc. (ARIN) on 2023-03-20 11:22 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."}],"115ac14af3772cc2":[{"raw_change_id":298837,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:55:30+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 1991-07-02) on 2015-04-09 and reserved on 2015-04-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2015-06-09. This does not confirm availability."},{"raw_change_id":298837,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:13:26+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 1991-07-02) on 2015-04-09 and reserved on 2015-04-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2015-06-09. This does not confirm availability."},{"raw_change_id":298837,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:56:49+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 1991-07-02) on 2015-04-09 and reserved on 2015-04-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2015-06-09. This does not confirm availability."},{"raw_change_id":298837,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:00:45+00:00","current":1,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 1991-07-02) on 2015-04-09 and reserved on 2015-04-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2015-06-09. This does not confirm availability."}]},"arin_statistics_now":{"status":"allocated (dated 1991-07-02)"}}