{"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":"192.144.72.0/23","resource_type":"ipv4","page":"https://rirtracker.com/ip/192.144.72.0-192.144.73.255/","statistics_now":{"registry":"LACNIC","status":"assigned (dated 2018-03-26)"},"current_holder":{"rir":"LACNIC","org":null,"how":"LACNIC's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"84afb0c5cc94fb6b","registry":"LACNIC","report_date":"2018-03-26","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"ipv4","resource":"192.144.72.0/23","start":"192.144.72.0","end":"192.144.73.255","classification":"APPARENT_NEW_ISSUANCE","classification_label":"Apparent new issuance","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from LACNIC-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:25+00:00","page":"https://rirtracker.com/ip/192.144.72.0-192.144.73.255/#e-84afb0c5cc94fb6b","report_page":"https://rirtracker.com/lacnic/reports/2018-03-26/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/192.144.72.0-192.144.73.255.json","observed":"192.144.72.0/23 reserved on 2018-03-25, assigned on 2018-03-26","explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2018-03-25 and assigned (dated 2018-03-26) on 2018-03-26. It moved from LACNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by LACNIC.","evidence":[{"type":"statistics_diff","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2018/delegated-lacnic-extended-20180326","retrieved_at":"2026-10-12T22:17:06+00:00","summary":"Found by comparing LACNIC's daily statistics: 192.144.72.0/23 reserved on 2018-03-25, assigned on 2018-03-26"},{"type":"delegated_before","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2018/delegated-lacnic-extended-20180325","retrieved_at":"2026-10-12T22:17:02+00:00","summary":"LACNIC delegated statistics 2018-03-25, before the change: reserved"},{"type":"delegated_after","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2018/delegated-lacnic-extended-20180326","retrieved_at":"2026-10-12T22:17:06+00:00","summary":"LACNIC delegated statistics 2018-03-26, after the change: assigned (dated 2018-03-26)"}]},{"event_id":"0bf6bc9cddd3fa43","registry":"LACNIC","report_date":"2018-03-05","source":"statistics","raw_action":"RELEASED","raw_line":null,"resource_type":"ipv4","resource":"192.144.72.0/23","start":"192.144.72.0","end":"192.144.73.255","classification":"HOLD_RELEASED","classification_label":"Released from hold (LACNIC lists it as 'available')","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"LACNIC's statistics now list it as 'available'; reissue not confirmed","inventory_effect_code":"RELEASED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:15+00:00","page":"https://rirtracker.com/ip/192.144.72.0-192.144.73.255/#e-0bf6bc9cddd3fa43","report_page":"https://rirtracker.com/lacnic/reports/2018-03-05/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/192.144.72.0-192.144.73.255.json","observed":"192.144.72.0/23 reserved on 2018-03-04, available on 2018-03-05","explanation":"LACNIC's statistics show it reserved on 2018-03-04 and available on 2018-03-05. LACNIC moved it from its reserved (held) records to the status it calls 'available'. That is LACNIC's own label: whether and when it is reissued is not confirmed.","evidence":[{"type":"statistics_diff","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2018/delegated-lacnic-extended-20180305","retrieved_at":"2026-10-12T22:15:23+00:00","summary":"Found by comparing LACNIC's daily statistics: 192.144.72.0/23 reserved on 2018-03-04, available on 2018-03-05"},{"type":"delegated_before","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2018/delegated-lacnic-extended-20180304","retrieved_at":"2026-10-12T22:15:18+00:00","summary":"LACNIC delegated statistics 2018-03-04, before the change: reserved"},{"type":"delegated_after","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2018/delegated-lacnic-extended-20180305","retrieved_at":"2026-10-12T22:15:23+00:00","summary":"LACNIC delegated statistics 2018-03-05, after the change: available"}]}],"classification_history":{"84afb0c5cc94fb6b":[{"raw_change_id":387067,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:34:00+00:00","current":0,"public_explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2018-03-25 and assigned (dated 2018-03-26) on 2018-03-26. The tracker saw this range released from hold on 2018-03-05 (192.144.72.0/23), so it appears to have been issued again from LACNIC's pool."},{"raw_change_id":387067,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:18:12+00:00","current":0,"public_explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2018-03-25 and assigned (dated 2018-03-26) on 2018-03-26. The tracker saw this range released from hold on 2018-03-05 (192.144.72.0/23), so it appears to have been issued again from LACNIC's pool."},{"raw_change_id":387067,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:01:56+00:00","current":0,"public_explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2018-03-25 and assigned (dated 2018-03-26) on 2018-03-26. The tracker saw this range released from hold on 2018-03-05 (192.144.72.0/23), so it appears to have been issued again from LACNIC's pool."},{"raw_change_id":387067,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:25+00:00","current":1,"public_explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2018-03-25 and assigned (dated 2018-03-26) on 2018-03-26. It moved from LACNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by LACNIC."}],"0bf6bc9cddd3fa43":[{"raw_change_id":384434,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:33:10+00:00","current":0,"public_explanation":"LACNIC's statistics show it reserved on 2018-03-04 and available on 2018-03-05. LACNIC moved it from its reserved (held) records to the status it calls 'available'. That is LACNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":384434,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:18:03+00:00","current":0,"public_explanation":"LACNIC's statistics show it reserved on 2018-03-04 and available on 2018-03-05. LACNIC moved it from its reserved (held) records to the status it calls 'available'. That is LACNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":384434,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:01:47+00:00","current":0,"public_explanation":"LACNIC's statistics show it reserved on 2018-03-04 and available on 2018-03-05. LACNIC moved it from its reserved (held) records to the status it calls 'available'. That is LACNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":384434,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:15+00:00","current":1,"public_explanation":"LACNIC's statistics show it reserved on 2018-03-04 and available on 2018-03-05. LACNIC moved it from its reserved (held) records to the status it calls 'available'. That is LACNIC's own label: whether and when it is reissued is not confirmed."}]},"arin_statistics_now":{"status":"not listed"}}