{"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":"52.128.224.0/19","resource_type":"ipv4","page":"https://rirtracker.com/ip/52.128.224.0-52.128.255.255/","statistics_now":{"registry":"APNIC","status":"allocated (dated 1991-12-19)"},"current_holder":{"rir":"APNIC","org":"Netsec Limited","how":"APNIC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":127626,"date":"2021-11-29T05:31:51Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"APNIC","source_org":"Simcentric Solutions Limited.","recipient_org":"Netsec Limited","range":"52.128.224.0/19","log":"APNIC"},{"id":11066,"date":"2017-10-03T14:38:36Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"E.I. du Pont de Nemours and Co., Inc.","recipient_org":"Simcentric Solutions Limited","range":"52.128.224.0/19","log":"ARIN"},{"id":125549,"date":"2017-10-03T05:40:52Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"EDPDNC","recipient_org":"Simcentric Solutions Limited.","range":"52.128.224.0/19","log":"APNIC"}],"events":[{"event_id":"c473b49b50280290","registry":"APNIC","report_date":"2021-11-29","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"52.128.224.0/19","start":"52.128.224.0","end":"52.128.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-APNIC transfer","confidence":"CONFIRMED","source_rir":"APNIC","recipient_rir":"APNIC","source_organization":"Simcentric Solutions Limited.","recipient_organization":"Netsec Limited","inventory_effect":"No effect on APNIC applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:44+00:00","page":"https://rirtracker.com/ip/52.128.224.0-52.128.255.255/#e-c473b49b50280290","report_page":"https://rirtracker.com/apnic/reports/2021-11-29/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/52.128.224.0-52.128.255.255.json","observed":"Transfer: Simcentric Solutions Limited. (APNIC) to Netsec Limited (APNIC)","explanation":"APNIC's transfer log records a transfer from Simcentric Solutions Limited. (APNIC) to Netsec Limited (APNIC) on 2021-11-29 05:31 UTC. The registration changed hands; it is not a new allocation from APNIC.","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 2021-11-29 05:31 UTC, Simcentric Solutions Limited. (APNIC) to Netsec Limited (APNIC); resources moved: 52.128.224.0/19, 103.1.224.0/22, 112.121.160.0/19, 148.66.0.0/19, 180.178.32.0/19, 182.16.0.0/17, 216.118.224.0/19"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2021/delegated-apnic-extended-20211129.gz","retrieved_at":"2026-10-12T23:59:12+00:00","summary":"APNIC delegated statistics 2021-11-29, before the change: allocated (dated 1991-12-19)"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2021/delegated-apnic-extended-20211130.gz","retrieved_at":"2026-10-12T23:59:16+00:00","summary":"APNIC delegated statistics 2021-11-30, after the change: allocated (dated 1991-12-19)"}]},{"event_id":"eaf49fc571ba0cf8","registry":"ARIN","report_date":"2017-10-03","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"52.128.224.0/19","start":"52.128.224.0","end":"52.128.255.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"E.I. du Pont de Nemours and Co., Inc.","recipient_organization":"Simcentric Solutions 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":"2026-10-14T00:03:30+00:00","page":"https://rirtracker.com/ip/52.128.224.0-52.128.255.255/#e-eaf49fc571ba0cf8","report_page":"https://rirtracker.com/arin/reports/2017-10-03/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/52.128.224.0-52.128.255.255.json","observed":"52.128.224.0/19 assigned on 2017-10-03, not listed on 2017-10-04","same_transfer_as":"c573ce663062649d","explanation":"ARIN's transfer log records a transfer from E.I. du Pont de Nemours and Co., Inc. (ARIN) to Simcentric Solutions Limited (APNIC) on 2017-10-03 14:38 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/2017/delegated-arin-extended-20171004.gz","retrieved_at":"2026-10-12T21:35:20+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 52.128.224.0/19 assigned on 2017-10-03, not listed on 2017-10-04"},{"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 2017-10-03 14:38 UTC, E.I. du Pont de Nemours and Co., Inc. (ARIN) to Simcentric Solutions Limited (APNIC); resources moved: 52.128.224.0/19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171002.gz","retrieved_at":"2026-10-12T21:35:15+00:00","summary":"ARIN delegated statistics 2017-10-02 (produced 2017-10-02T05:11:47+00:00), before the report: assigned (dated 1991-12-19)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171004.gz","retrieved_at":"2026-10-12T21:35:20+00:00","summary":"ARIN delegated statistics 2017-10-04 (produced 2017-10-04T05:11:33+00:00), after the report: not listed"}]},{"event_id":"c573ce663062649d","registry":"APNIC","report_date":"2017-10-03","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"52.128.224.0/19","start":"52.128.224.0","end":"52.128.255.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into APNIC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"EDPDNC","recipient_organization":"Simcentric Solutions 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":"2026-10-13T23:46:35+00:00","page":"https://rirtracker.com/ip/52.128.224.0-52.128.255.255/#e-c573ce663062649d","report_page":"https://rirtracker.com/apnic/reports/2017-10-03/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/52.128.224.0-52.128.255.255.json","observed":"Transfer: EDPDNC (ARIN) to Simcentric Solutions Limited. (APNIC)","same_transfer_as":"eaf49fc571ba0cf8","explanation":"APNIC's transfer log records a transfer from EDPDNC (ARIN) to Simcentric Solutions Limited. (APNIC) on 2017-10-03 05:40 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 2017-10-03 05:40 UTC, EDPDNC (ARIN) to Simcentric Solutions Limited. (APNIC); resources moved: 52.128.224.0/19"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2017/delegated-apnic-extended-20171003.gz","retrieved_at":"2026-10-12T22:13:20+00:00","summary":"APNIC delegated statistics 2017-10-03, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2017/delegated-apnic-extended-20171004.gz","retrieved_at":"2026-10-12T22:13:31+00:00","summary":"APNIC delegated statistics 2017-10-04, after the change: allocated (dated 1991-12-19)"}]}],"classification_history":{"c473b49b50280290":[{"raw_change_id":38280,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:37:01+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from Simcentric Solutions Limited. (APNIC) to Netsec Limited (APNIC) on 2021-11-29 05:31 UTC. The registration changed hands; it is not a new allocation from APNIC."},{"raw_change_id":38280,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:01:58+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from Simcentric Solutions Limited. (APNIC) to Netsec Limited (APNIC) on 2021-11-29 05:31 UTC. The registration changed hands; it is not a new allocation from APNIC."},{"raw_change_id":38280,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:08+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from Simcentric Solutions Limited. (APNIC) to Netsec Limited (APNIC) on 2021-11-29 05:31 UTC. The registration changed hands; it is not a new allocation from APNIC."},{"raw_change_id":38280,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:44+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from Simcentric Solutions Limited. (APNIC) to Netsec Limited (APNIC) on 2021-11-29 05:31 UTC. The registration changed hands; it is not a new allocation from APNIC."}],"eaf49fc571ba0cf8":[{"raw_change_id":341766,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T05:15:34+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 Simcentric Solutions Limited (APNIC) on 2017-10-03 14:38 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":341766,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:15:47+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 Simcentric Solutions Limited (APNIC) on 2017-10-03 14:38 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":341766,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:59:20+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 Simcentric Solutions Limited (APNIC) on 2017-10-03 14:38 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":341766,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:03:30+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 Simcentric Solutions Limited (APNIC) on 2017-10-03 14:38 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."}],"c573ce663062649d":[{"raw_change_id":34935,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:35:34+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from EDPDNC (ARIN) to Simcentric Solutions Limited. (APNIC) on 2017-10-03 05:40 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":34935,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:01:51+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from EDPDNC (ARIN) to Simcentric Solutions Limited. (APNIC) on 2017-10-03 05:40 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":34935,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:01+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from EDPDNC (ARIN) to Simcentric Solutions Limited. (APNIC) on 2017-10-03 05:40 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":34935,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:35+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from EDPDNC (ARIN) to Simcentric Solutions Limited. (APNIC) on 2017-10-03 05:40 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."}]},"arin_statistics_now":{"status":"not listed"}}