{"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":"143.137.184.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/143.137.184.0-143.137.187.255/","statistics_now":{"registry":"LACNIC","status":"allocated (dated 2015-10-01)"},"current_holder":{"rir":"LACNIC","org":"Delta Telecomunicações Eireli","how":"LACNIC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":132197,"date":"2022-04-18T11:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"LACNIC","recipient_rir":"LACNIC","source_org":"J.C. Bartzen Telecomunicações Eireli","recipient_org":"Delta Telecomunicações Eireli","range":"143.137.184.0/22","log":"LACNIC"}],"events":[{"event_id":"562f5e9cd93e7d66","registry":"LACNIC","report_date":"2022-04-18","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"143.137.184.0/22","start":"143.137.184.0","end":"143.137.187.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-LACNIC transfer","confidence":"CONFIRMED","source_rir":"LACNIC","recipient_rir":"LACNIC","source_organization":"J.C. Bartzen Telecomunicações Eireli","recipient_organization":"Delta Telecomunicações Eireli","inventory_effect":"No effect on LACNIC applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:26+00:00","page":"https://rirtracker.com/ip/143.137.184.0-143.137.187.255/#e-562f5e9cd93e7d66","report_page":"https://rirtracker.com/lacnic/reports/2022-04-18/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/143.137.184.0-143.137.187.255.json","observed":"Transfer: J.C. Bartzen Telecomunicações Eireli (LACNIC) to Delta Telecomunicações Eireli (LACNIC)","explanation":"LACNIC's transfer log records a transfer from J.C. Bartzen Telecomunicações Eireli (LACNIC) to Delta Telecomunicações Eireli (LACNIC) on 2022-04-18 11:00 UTC. The registration changed hands; it is not a new allocation from LACNIC.","evidence":[{"type":"transfer","url":"https://ftp.lacnic.net/pub/stats/lacnic/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:38+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2022-04-18 11:00 UTC, J.C. Bartzen Telecomunicações Eireli (LACNIC) to Delta Telecomunicações Eireli (LACNIC); resources moved: 143.137.184.0/22"},{"type":"delegated_before","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2022/delegated-lacnic-extended-20220417","retrieved_at":"2026-10-13T00:28:37+00:00","summary":"LACNIC delegated statistics 2022-04-17, before the change: allocated (dated 2015-10-01)"},{"type":"delegated_after","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2022/delegated-lacnic-extended-20220418","retrieved_at":"2026-10-13T00:28:41+00:00","summary":"LACNIC delegated statistics 2022-04-18, after the change: allocated (dated 2015-10-01)"}]},{"event_id":"69063ca8f1c617b5","registry":"LACNIC","report_date":"2015-10-01","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"ipv4","resource":"143.137.184.0/22","start":"143.137.184.0","end":"143.137.187.255","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":"2026-10-14T00:01:27+00:00","page":"https://rirtracker.com/ip/143.137.184.0-143.137.187.255/#e-69063ca8f1c617b5","report_page":"https://rirtracker.com/lacnic/reports/2015-10-01/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/143.137.184.0-143.137.187.255.json","observed":"143.137.184.0/22 reserved on 2015-09-30, allocated on 2015-10-01","explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2015-09-30 and allocated (dated 2015-10-01) on 2015-10-01. 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/2015/delegated-lacnic-extended-20151001","retrieved_at":"2026-10-12T21:00:48+00:00","summary":"Found by comparing LACNIC's daily statistics: 143.137.184.0/22 reserved on 2015-09-30, allocated on 2015-10-01"},{"type":"delegated_before","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2015/delegated-lacnic-extended-20150930","retrieved_at":"2026-10-12T21:00:44+00:00","summary":"LACNIC delegated statistics 2015-09-30, before the change: reserved"},{"type":"delegated_after","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2015/delegated-lacnic-extended-20151001","retrieved_at":"2026-10-12T21:00:48+00:00","summary":"LACNIC delegated statistics 2015-10-01, after the change: allocated (dated 2015-10-01)"}]}],"classification_history":{"562f5e9cd93e7d66":[{"raw_change_id":30627,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:33:25+00:00","current":0,"public_explanation":"LACNIC's transfer log records a transfer from J.C. Bartzen Telecomunicações Eireli (LACNIC) to Delta Telecomunicações Eireli (LACNIC) on 2022-04-18 11:00 UTC. The registration changed hands; it is not a new allocation from LACNIC."},{"raw_change_id":30627,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:01:44+00:00","current":0,"public_explanation":"LACNIC's transfer log records a transfer from J.C. Bartzen Telecomunicações Eireli (LACNIC) to Delta Telecomunicações Eireli (LACNIC) on 2022-04-18 11:00 UTC. The registration changed hands; it is not a new allocation from LACNIC."},{"raw_change_id":30627,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:43:52+00:00","current":0,"public_explanation":"LACNIC's transfer log records a transfer from J.C. Bartzen Telecomunicações Eireli (LACNIC) to Delta Telecomunicações Eireli (LACNIC) on 2022-04-18 11:00 UTC. The registration changed hands; it is not a new allocation from LACNIC."},{"raw_change_id":30627,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:26+00:00","current":1,"public_explanation":"LACNIC's transfer log records a transfer from J.C. Bartzen Telecomunicações Eireli (LACNIC) to Delta Telecomunicações Eireli (LACNIC) on 2022-04-18 11:00 UTC. The registration changed hands; it is not a new allocation from LACNIC."}],"69063ca8f1c617b5":[{"raw_change_id":309651,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:00:07+00:00","current":0,"public_explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2015-09-30 and allocated (dated 2015-10-01) on 2015-10-01. The tracker saw this range released from hold on 2014-04-23 (143.137.0.0/16), so it appears to have been issued again from LACNIC's pool."},{"raw_change_id":309651,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:14:02+00:00","current":0,"public_explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2015-09-30 and allocated (dated 2015-10-01) on 2015-10-01. The tracker saw this range released from hold on 2014-04-23 (143.137.0.0/16), so it appears to have been issued again from LACNIC's pool."},{"raw_change_id":309651,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:57:27+00:00","current":0,"public_explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2015-09-30 and allocated (dated 2015-10-01) on 2015-10-01. The tracker saw this range released from hold on 2014-04-23 (143.137.0.0/16), so it appears to have been issued again from LACNIC's pool."},{"raw_change_id":309651,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:01:27+00:00","current":1,"public_explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2015-09-30 and allocated (dated 2015-10-01) on 2015-10-01. It moved from LACNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by LACNIC."}]},"arin_statistics_now":{"status":"not listed"}}