{"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":"158.120.224.0/20","resource_type":"ipv4","page":"https://rirtracker.com/ip/158.120.224.0-158.120.239.255/","statistics_now":{"registry":"APNIC","status":"allocated (dated 1992-02-28)"},"current_holder":{"rir":"APNIC","org":"CERNER CORPORATION PTY LIMITED","how":"APNIC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":24651,"date":"2021-05-18T11:08:21Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"City of Colorado Springs","recipient_org":"CERNER CORPORATION PTY LIMITED","range":"158.120.224.0/20","log":"ARIN"},{"id":127263,"date":"2021-05-18T04:27:11Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"CCS-29","recipient_org":"CERNER CORPORATION PTY LIMITED","range":"158.120.224.0/20","log":"APNIC"}],"events":[{"event_id":"29475156d50f1f5e","registry":"APNIC","report_date":"2021-05-18","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"158.120.224.0/20","start":"158.120.224.0","end":"158.120.239.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into APNIC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"CCS-29","recipient_organization":"CERNER CORPORATION PTY LIMITED","inventory_effect":"Transferred into APNIC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:42+00:00","page":"https://rirtracker.com/ip/158.120.224.0-158.120.239.255/#e-29475156d50f1f5e","report_page":"https://rirtracker.com/apnic/reports/2021-05-18/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/158.120.224.0-158.120.239.255.json","observed":"Transfer: CCS-29 (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC)","same_transfer_as":"965f764407b512a6","explanation":"APNIC's transfer log records a transfer from CCS-29 (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC) on 2021-05-18 04:27 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance.","evidence":[{"type":"transfer","url":"https://ftp.apnic.net/stats/apnic/transfers/transfers_latest.json","retrieved_at":"2026-10-13T18:17:16+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2021-05-18 04:27 UTC, CCS-29 (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC); resources moved: 158.120.224.0/20"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2021/delegated-apnic-extended-20210518.gz","retrieved_at":"2026-10-12T23:44:50+00:00","summary":"APNIC delegated statistics 2021-05-18, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2021/delegated-apnic-extended-20210519.gz","retrieved_at":"2026-10-12T23:44:53+00:00","summary":"APNIC delegated statistics 2021-05-19, after the change: allocated (dated 1992-02-28)"}]},{"event_id":"965f764407b512a6","registry":"ARIN","report_date":"2021-05-17","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"158.120.224.0/20","start":"158.120.224.0","end":"158.120.239.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"City of Colorado Springs","recipient_organization":"CERNER CORPORATION PTY LIMITED","inventory_effect":"Transferred out of ARIN administration; not offered to ARIN applicants","inventory_effect_code":"TRANSFER_OUT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:08:10+00:00","page":"https://rirtracker.com/ip/158.120.224.0-158.120.239.255/#e-965f764407b512a6","report_page":"https://rirtracker.com/arin/reports/2021-05-17/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/158.120.224.0-158.120.239.255.json","observed":"158.120.224.0/20 assigned on 2021-05-17, not listed on 2021-05-18","same_transfer_as":"29475156d50f1f5e","explanation":"ARIN's transfer log records a transfer from City of Colorado Springs (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC) on 2021-05-18 11:08 UTC: it left ARIN for APNIC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210518.gz","retrieved_at":"2026-10-12T22:42:52+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 158.120.224.0/20 assigned on 2021-05-17, not listed on 2021-05-18"},{"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 2021-05-18 11:08 UTC, City of Colorado Springs (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC); resources moved: 158.120.224.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210516.gz","retrieved_at":"2026-10-12T22:42:48+00:00","summary":"ARIN delegated statistics 2021-05-16 (produced 2021-05-16T14:00:12+00:00), before the report: assigned (dated 1992-02-28)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210518.gz","retrieved_at":"2026-10-12T22:42:52+00:00","summary":"ARIN delegated statistics 2021-05-18 (produced 2021-05-18T14:00:12+00:00), after the report: not listed"}]}],"classification_history":{"29475156d50f1f5e":[{"raw_change_id":37735,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:36:47+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from CCS-29 (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC) on 2021-05-18 04:27 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":37735,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:01:57+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from CCS-29 (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC) on 2021-05-18 04:27 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":37735,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:07+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from CCS-29 (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC) on 2021-05-18 04:27 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":37735,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:42+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from CCS-29 (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC) on 2021-05-18 04:27 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."}],"965f764407b512a6":[{"raw_change_id":412245,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T05:45:22+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from City of Colorado Springs (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC) on 2021-05-18 11:08 UTC: it left ARIN for APNIC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":412245,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:19:37+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from City of Colorado Springs (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC) on 2021-05-18 11:08 UTC: it left ARIN for APNIC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":412245,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T15:03:28+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from City of Colorado Springs (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC) on 2021-05-18 11:08 UTC: it left ARIN for APNIC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":412245,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:08:10+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from City of Colorado Springs (ARIN) to CERNER CORPORATION PTY LIMITED (APNIC) on 2021-05-18 11:08 UTC: it left ARIN for APNIC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."}]},"arin_statistics_now":{"status":"not listed"}}