{"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":"159.138.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/159.138.0.0-159.138.255.255/","statistics_now":{"registry":"APNIC","status":"allocated (dated 1992-04-20)"},"current_holder":{"rir":"APNIC","org":"HUAWEI INTERNATIONAL PTE LTD","how":"APNIC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":11384,"date":"2017-11-16T15:50:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"AK Steel Corporation","recipient_org":"HUAWEI INTERNATIONAL PTE LTD","range":"159.138.0.0/16","log":"ARIN"},{"id":125594,"date":"2017-11-16T05:18:09Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"ASC-163-Z","recipient_org":"HUAWEI INTERNATIONAL PTE. LTD.","range":"159.138.0.0/16","log":"APNIC"},{"id":10336,"date":"2017-07-13T17:23:36Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Rouge Steel Co.","recipient_org":"AK Steel Corporation","range":"159.138.0.0/16","log":"ARIN"}],"events":[{"event_id":"ec3440ac8a2efb3c","registry":"ARIN","report_date":"2017-11-16","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"159.138.0.0/16","start":"159.138.0.0","end":"159.138.255.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"AK Steel Corporation","recipient_organization":"HUAWEI INTERNATIONAL PTE LTD","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":"2026-10-14T00:03:38+00:00","page":"https://rirtracker.com/ip/159.138.0.0-159.138.255.255/#e-ec3440ac8a2efb3c","report_page":"https://rirtracker.com/arin/reports/2017-11-16/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/159.138.0.0-159.138.255.255.json","observed":"159.138.0.0/16 assigned on 2017-11-16, not listed on 2017-11-17","same_transfer_as":"fea3b4ce671ebe58","explanation":"ARIN's transfer log records a transfer from AK Steel Corporation (ARIN) to HUAWEI INTERNATIONAL PTE LTD (APNIC) on 2017-11-16 15:50 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-20171117.gz","retrieved_at":"2026-10-12T21:37:28+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 159.138.0.0/16 assigned on 2017-11-16, not listed on 2017-11-17"},{"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 2017-11-16 15:50 UTC, AK Steel Corporation (ARIN) to HUAWEI INTERNATIONAL PTE LTD (APNIC); resources moved: 159.138.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171115.gz","retrieved_at":"2026-10-12T21:37:24+00:00","summary":"ARIN delegated statistics 2017-11-15 (produced 2017-11-15T06:11:34+00:00), before the report: assigned (dated 1992-04-20)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171117.gz","retrieved_at":"2026-10-12T21:37:28+00:00","summary":"ARIN delegated statistics 2017-11-17 (produced 2017-11-17T06:11:07+00:00), after the report: not listed"}]},{"event_id":"fea3b4ce671ebe58","registry":"APNIC","report_date":"2017-11-16","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"159.138.0.0/16","start":"159.138.0.0","end":"159.138.255.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into APNIC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"ASC-163-Z","recipient_organization":"HUAWEI INTERNATIONAL PTE. LTD.","inventory_effect":"Transferred into APNIC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:36+00:00","page":"https://rirtracker.com/ip/159.138.0.0-159.138.255.255/#e-fea3b4ce671ebe58","report_page":"https://rirtracker.com/apnic/reports/2017-11-16/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/159.138.0.0-159.138.255.255.json","observed":"Transfer: ASC-163-Z (ARIN) to HUAWEI INTERNATIONAL PTE. LTD. (APNIC)","same_transfer_as":"ec3440ac8a2efb3c","explanation":"APNIC's transfer log records a transfer from ASC-163-Z (ARIN) to HUAWEI INTERNATIONAL PTE. LTD. (APNIC) on 2017-11-16 05:18 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 2017-11-16 05:18 UTC, ASC-163-Z (ARIN) to HUAWEI INTERNATIONAL PTE. LTD. (APNIC); resources moved: 159.138.0.0/16"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2017/delegated-apnic-extended-20171116.gz","retrieved_at":"2026-10-12T22:16:21+00:00","summary":"APNIC delegated statistics 2017-11-16, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2017/delegated-apnic-extended-20171117.gz","retrieved_at":"2026-10-12T22:16:24+00:00","summary":"APNIC delegated statistics 2017-11-17, after the change: allocated (dated 1992-04-20)"}]},{"event_id":"776f4a6001181fd6","registry":"ARIN","report_date":"2017-07-13","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"159.138.0.0/16","start":"159.138.0.0","end":"159.138.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Rouge Steel Co.","recipient_organization":"AK Steel Corporation","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:30+00:00","page":"https://rirtracker.com/ip/159.138.0.0-159.138.255.255/#e-776f4a6001181fd6","report_page":"https://rirtracker.com/arin/reports/2017-07-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/159.138.0.0-159.138.255.255.json","observed":"Merger/acquisition: Rouge Steel Co. (ARIN) to AK Steel Corporation (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Rouge Steel Co. (ARIN) to AK Steel Corporation (ARIN) on 2017-07-13 17:23 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 2017-07-13 17:23 UTC, Rouge Steel Co. (ARIN) to AK Steel Corporation (ARIN); resources moved: 159.138.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170712.gz","retrieved_at":"2026-10-12T21:31:04+00:00","summary":"ARIN delegated statistics 2017-07-12 (produced 2017-07-12T05:09:42+00:00), before the report: assigned (dated 1992-04-20)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170714.gz","retrieved_at":"2026-10-12T21:31:09+00:00","summary":"ARIN delegated statistics 2017-07-14 (produced 2017-07-14T05:08:58+00:00), after the report: assigned (dated 1992-04-20)"}]}],"classification_history":{"ec3440ac8a2efb3c":[{"raw_change_id":343748,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T05:16:36+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from AK Steel Corporation (ARIN) to HUAWEI INTERNATIONAL PTE LTD (APNIC) on 2017-11-16 15:50 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":343748,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:15:54+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from AK Steel Corporation (ARIN) to HUAWEI INTERNATIONAL PTE LTD (APNIC) on 2017-11-16 15:50 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":343748,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:59:27+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from AK Steel Corporation (ARIN) to HUAWEI INTERNATIONAL PTE LTD (APNIC) on 2017-11-16 15:50 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":343748,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:03:38+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from AK Steel Corporation (ARIN) to HUAWEI INTERNATIONAL PTE LTD (APNIC) on 2017-11-16 15:50 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."}],"fea3b4ce671ebe58":[{"raw_change_id":35038,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:35:37+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from ASC-163-Z (ARIN) to HUAWEI INTERNATIONAL PTE. LTD. (APNIC) on 2017-11-16 05:18 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":35038,"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 ASC-163-Z (ARIN) to HUAWEI INTERNATIONAL PTE. LTD. (APNIC) on 2017-11-16 05:18 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":35038,"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 ASC-163-Z (ARIN) to HUAWEI INTERNATIONAL PTE. LTD. (APNIC) on 2017-11-16 05:18 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":35038,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:36+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from ASC-163-Z (ARIN) to HUAWEI INTERNATIONAL PTE. LTD. (APNIC) on 2017-11-16 05:18 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."}],"776f4a6001181fd6":[{"raw_change_id":552622,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:30+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Rouge Steel Co. (ARIN) to AK Steel Corporation (ARIN) on 2017-07-13 17:23 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."}]},"arin_statistics_now":{"status":"not listed"}}