{"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":"170.85.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/170.85.0.0-170.85.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2022-04-19)"},"current_holder":{"rir":"ARIN","org":"ZSCALER, INC.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":27845,"date":"2022-04-19T19:08:51Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"WestRock Company","recipient_org":"ZSCALER, INC.","range":"170.85.0.0/16","log":"ARIN"},{"id":26200,"date":"2021-11-29T22:48:31Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"MWV","recipient_org":"WestRock Company","range":"170.85.0.0/16","log":"ARIN"},{"id":5773,"date":"2015-06-18T18:19:23Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Westvaco Corporation","recipient_org":"MWV","range":"170.85.0.0/16","log":"ARIN"}],"events":[{"event_id":"eeda4d326ce95b7c","registry":"ARIN","report_date":"2022-04-19","source":"arin_issued","raw_action":"ADD","raw_line":"Add 170.85.0.0-170.85.255.255","resource_type":"ipv4","resource":"170.85.0.0/16","start":"170.85.0.0","end":"170.85.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"WestRock Company","recipient_organization":"ZSCALER, INC.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:22+00:00","page":"https://rirtracker.com/ip/170.85.0.0-170.85.255.255/#e-eeda4d326ce95b7c","report_page":"https://rirtracker.com/arin/reports/2022-04-19/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/170.85.0.0-170.85.255.255.json","explanation":"ARIN's transfer log records a transfer from WestRock Company (ARIN) to ZSCALER, INC. (ARIN) on 2022-04-19 19:08 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/2022-April/004876.html","retrieved_at":"2026-10-12T18:41:43+00:00","summary":"ARIN-Issued report for 2022-04-19: \"Add 170.85.0.0-170.85.255.255\""},{"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 2022-04-19 19:08 UTC, WestRock Company (ARIN) to ZSCALER, INC. (ARIN); resources moved: 170.85.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220418.gz","retrieved_at":"2026-10-12T23:00:02+00:00","summary":"ARIN delegated statistics 2022-04-18 (produced 2022-04-18T13:00:10+00:00), before the report: allocated (dated 1994-03-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220420.gz","retrieved_at":"2026-10-12T23:00:07+00:00","summary":"ARIN delegated statistics 2022-04-20 (produced 2022-04-20T13:00:10+00:00), after the report: allocated (dated 2022-04-19)"}]},{"event_id":"fbcba64c05dddb38","registry":"ARIN","report_date":"2021-11-29","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"170.85.0.0/16","start":"170.85.0.0","end":"170.85.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"MWV","recipient_organization":"WestRock Company","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:58+00:00","page":"https://rirtracker.com/ip/170.85.0.0-170.85.255.255/#e-fbcba64c05dddb38","report_page":"https://rirtracker.com/arin/reports/2021-11-29/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/170.85.0.0-170.85.255.255.json","observed":"Merger/acquisition: MWV (ARIN) to WestRock Company (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from MWV (ARIN) to WestRock Company (ARIN) on 2021-11-29 22:48 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 2021-11-29 22:48 UTC, MWV (ARIN) to WestRock Company (ARIN); resources moved: 170.85.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211128.gz","retrieved_at":"2026-10-12T22:52:52+00:00","summary":"ARIN delegated statistics 2021-11-28 (produced 2021-11-28T14:00:14+00:00), before the report: assigned (dated 1994-03-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211130.gz","retrieved_at":"2026-10-12T22:52:57+00:00","summary":"ARIN delegated statistics 2021-11-30 (produced 2021-11-30T14:00:12+00:00), after the report: assigned (dated 1994-03-08)"}]},{"event_id":"1e35d93a6400746c","registry":"ARIN","report_date":"2015-06-18","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"170.85.0.0/16","start":"170.85.0.0","end":"170.85.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Westvaco Corporation","recipient_organization":"MWV","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:22+00:00","page":"https://rirtracker.com/ip/170.85.0.0-170.85.255.255/#e-1e35d93a6400746c","report_page":"https://rirtracker.com/arin/reports/2015-06-18/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/170.85.0.0-170.85.255.255.json","observed":"Merger/acquisition: Westvaco Corporation (ARIN) to MWV (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Westvaco Corporation (ARIN) to MWV (ARIN) on 2015-06-18 18:19 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 2015-06-18 18:19 UTC, Westvaco Corporation (ARIN) to MWV (ARIN); resources moved: 170.85.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150617.gz","retrieved_at":"2026-10-12T20:54:16+00:00","summary":"ARIN delegated statistics 2015-06-17 (produced 2015-06-17T05:04:49+00:00), before the report: assigned (dated 1994-03-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150619.gz","retrieved_at":"2026-10-12T20:54:21+00:00","summary":"ARIN delegated statistics 2015-06-19 (produced 2015-06-19T05:05:11+00:00), after the report: assigned (dated 1994-03-08)"}]}],"classification_history":{"eeda4d326ce95b7c":[{"raw_change_id":176138,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:55:46+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from WestRock Company (ARIN) to ZSCALER, INC. (ARIN) on 2022-04-19 19:08 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":176138,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:12+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from WestRock Company (ARIN) to ZSCALER, INC. (ARIN) on 2022-04-19 19:08 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":176138,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:00+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from WestRock Company (ARIN) to ZSCALER, INC. (ARIN) on 2022-04-19 19:08 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":176138,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:22+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from WestRock Company (ARIN) to ZSCALER, INC. (ARIN) on 2022-04-19 19:08 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"fbcba64c05dddb38":[{"raw_change_id":564262,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:58+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from MWV (ARIN) to WestRock Company (ARIN) on 2021-11-29 22:48 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."}],"1e35d93a6400746c":[{"raw_change_id":549325,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:22+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Westvaco Corporation (ARIN) to MWV (ARIN) on 2015-06-18 18:19 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":"allocated (dated 2022-04-19)"}}