{"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":"128.1.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/128.1.0.0-128.1.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2016-09-07)"},"current_holder":{"rir":"ARIN","org":"Zenlayer Inc","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":11872,"date":"2018-01-12T21:10:46Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Zenlayer Inc","recipient_org":"Zenlayer Inc","range":"128.1.0.0/16","log":"ARIN"},{"id":7777,"date":"2016-09-07T18:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Raytheon BBN Technologies Corp.","recipient_org":"Zenlayer Inc","range":"128.1.0.0/16","log":"ARIN"}],"events":[{"event_id":"363584df66204b54","registry":"ARIN","report_date":"2018-01-12","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"128.1.0.0/16","start":"128.1.0.0","end":"128.1.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Zenlayer Inc","recipient_organization":"Zenlayer Inc","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:33+00:00","page":"https://rirtracker.com/ip/128.1.0.0-128.1.255.255/#e-363584df66204b54","report_page":"https://rirtracker.com/arin/reports/2018-01-12/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/128.1.0.0-128.1.255.255.json","observed":"Merger/acquisition: Zenlayer Inc (ARIN) to Zenlayer Inc (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Zenlayer Inc (ARIN) to Zenlayer Inc (ARIN) on 2018-01-12 21:10 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 2018-01-12 21:10 UTC, Zenlayer Inc (ARIN) to Zenlayer Inc (ARIN); resources moved: 128.1.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180111.gz","retrieved_at":"2026-10-12T21:40:09+00:00","summary":"ARIN delegated statistics 2018-01-11 (produced 2018-01-11T06:09:45+00:00), before the report: allocated (dated 2016-09-07)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180113.gz","retrieved_at":"2026-10-12T21:40:14+00:00","summary":"ARIN delegated statistics 2018-01-13 (produced 2018-01-13T06:09:44+00:00), after the report: allocated (dated 2016-09-07)"}]},{"event_id":"0f982f612bdee8fb","registry":"ARIN","report_date":"2016-09-07","source":"arin_issued","raw_action":"ADD","raw_line":"Add 128.1.0.0-128.1.255.255","resource_type":"ipv4","resource":"128.1.0.0/16","start":"128.1.0.0","end":"128.1.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Raytheon BBN Technologies Corp.","recipient_organization":"Zenlayer Inc","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:38+00:00","page":"https://rirtracker.com/ip/128.1.0.0-128.1.255.255/#e-0f982f612bdee8fb","report_page":"https://rirtracker.com/arin/reports/2016-09-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/128.1.0.0-128.1.255.255.json","explanation":"ARIN's transfer log records a transfer from Raytheon BBN Technologies Corp. (ARIN) to Zenlayer Inc (ARIN) on 2016-09-07 18:00 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2016-September/002827.html","retrieved_at":"2026-10-12T18:39:21+00:00","summary":"ARIN-Issued report for 2016-09-07: \"Add 128.1.0.0-128.1.255.255\""},{"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 2016-09-07 18:00 UTC, Raytheon BBN Technologies Corp. (ARIN) to Zenlayer Inc (ARIN); resources moved: 128.1.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160906.gz","retrieved_at":"2026-10-12T21:15:56+00:00","summary":"ARIN delegated statistics 2016-09-06 (produced 2016-09-06T05:09:40+00:00), before the report: allocated (dated 1991-11-20)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160908.gz","retrieved_at":"2026-10-12T21:16:01+00:00","summary":"ARIN delegated statistics 2016-09-08 (produced 2016-09-08T05:09:30+00:00), after the report: allocated (dated 2016-09-07)"}]}],"classification_history":{"363584df66204b54":[{"raw_change_id":553588,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:33+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Zenlayer Inc (ARIN) to Zenlayer Inc (ARIN) on 2018-01-12 21:10 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."}],"0f982f612bdee8fb":[{"raw_change_id":146137,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:35:59+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Raytheon BBN Technologies Corp. (ARIN) to Zenlayer Inc (ARIN) on 2016-09-07 18:00 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":146137,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:53+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Raytheon BBN Technologies Corp. (ARIN) to Zenlayer Inc (ARIN) on 2016-09-07 18:00 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":146137,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:32+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Raytheon BBN Technologies Corp. (ARIN) to Zenlayer Inc (ARIN) on 2016-09-07 18:00 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":146137,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:38+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Raytheon BBN Technologies Corp. (ARIN) to Zenlayer Inc (ARIN) on 2016-09-07 18:00 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2016-09-07)"}}