{"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":"216.221.16.0/20","resource_type":"ipv4","page":"https://rirtracker.com/ip/216.221.16.0-216.221.31.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2019-01-25)"},"current_holder":{"rir":"ARIN","org":"Arista Networks, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":42603,"date":"2026-01-13T19:37:38Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Avago Technologies U.S. Inc.","recipient_org":"Arista Networks, Inc.","range":"216.221.16.0/20","log":"ARIN"},{"id":42044,"date":"2025-11-14T17:15:51Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"VMWare, LLC","recipient_org":"Avago Technologies U.S. Inc.","range":"216.221.16.0/20","log":"ARIN"},{"id":21022,"date":"2020-07-13T11:13:36Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Pivotal Software, Inc.","recipient_org":"VMWare, Inc.","range":"216.221.16.0/20","log":"ARIN"}],"events":[{"event_id":"8b59c152cbd9361a","registry":"ARIN","report_date":"2026-01-13","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"216.221.16.0/20","start":"216.221.16.0","end":"216.221.31.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Avago Technologies U.S. Inc.","recipient_organization":"Arista Networks, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:25+00:00","page":"https://rirtracker.com/ip/216.221.16.0-216.221.31.255/#e-8b59c152cbd9361a","report_page":"https://rirtracker.com/arin/reports/2026-01-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.221.16.0-216.221.31.255.json","observed":"Merger/acquisition: Avago Technologies U.S. Inc. (ARIN) to Arista Networks, Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Avago Technologies U.S. Inc. (ARIN) to Arista Networks, Inc. (ARIN) on 2026-01-13 19:37 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 2026-01-13 19:37 UTC, Avago Technologies U.S. Inc. (ARIN) to Arista Networks, Inc. (ARIN); resources moved: 216.221.16.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260112","retrieved_at":"2026-10-09T18:54:51+00:00","summary":"ARIN delegated statistics 2026-01-12 (produced 2026-01-12T14:00:47+00:00), before the report: allocated (dated 2019-01-25)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260114","retrieved_at":"2026-10-09T18:54:57+00:00","summary":"ARIN delegated statistics 2026-01-14 (produced 2026-01-14T14:00:47+00:00), after the report: allocated (dated 2019-01-25)"}]},{"event_id":"ed4135364addb273","registry":"ARIN","report_date":"2025-11-14","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"216.221.16.0/20","start":"216.221.16.0","end":"216.221.31.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"VMWare, LLC","recipient_organization":"Avago Technologies U.S. Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:24+00:00","page":"https://rirtracker.com/ip/216.221.16.0-216.221.31.255/#e-ed4135364addb273","report_page":"https://rirtracker.com/arin/reports/2025-11-14/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.221.16.0-216.221.31.255.json","observed":"Merger/acquisition: VMWare, LLC (ARIN) to Avago Technologies U.S. Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from VMWare, LLC (ARIN) to Avago Technologies U.S. Inc. (ARIN) on 2025-11-14 17:15 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 2025-11-14 17:15 UTC, VMWare, LLC (ARIN) to Avago Technologies U.S. Inc. (ARIN); resources moved: 216.221.16.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20251113.gz","retrieved_at":"2026-10-13T00:10:06+00:00","summary":"ARIN delegated statistics 2025-11-13 (produced 2025-11-13T14:00:46+00:00), before the report: allocated (dated 2019-01-25)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20251115.gz","retrieved_at":"2026-10-13T00:10:21+00:00","summary":"ARIN delegated statistics 2025-11-15 (produced 2025-11-15T14:00:50+00:00), after the report: allocated (dated 2019-01-25)"}]},{"event_id":"f79429e24338d148","registry":"ARIN","report_date":"2020-07-13","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"216.221.16.0/20","start":"216.221.16.0","end":"216.221.31.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Pivotal Software, Inc.","recipient_organization":"VMWare, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:50+00:00","page":"https://rirtracker.com/ip/216.221.16.0-216.221.31.255/#e-f79429e24338d148","report_page":"https://rirtracker.com/arin/reports/2020-07-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.221.16.0-216.221.31.255.json","observed":"Merger/acquisition: Pivotal Software, Inc. (ARIN) to VMWare, Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Pivotal Software, Inc. (ARIN) to VMWare, Inc. (ARIN) on 2020-07-13 11:13 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 2020-07-13 11:13 UTC, Pivotal Software, Inc. (ARIN) to VMWare, Inc. (ARIN); resources moved: 216.221.16.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200712.gz","retrieved_at":"2026-10-12T22:27:05+00:00","summary":"ARIN delegated statistics 2020-07-12 (produced 2020-07-12T14:00:13+00:00), before the report: assigned (dated 2019-01-25)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200714.gz","retrieved_at":"2026-10-12T22:27:09+00:00","summary":"ARIN delegated statistics 2020-07-14 (produced 2020-07-14T14:00:13+00:00), after the report: allocated (dated 2019-01-25)"}]},{"event_id":"4b240d46161fcf18","registry":"ARIN","report_date":"2019-01-25","source":"arin_issued","raw_action":"ADD","raw_line":"Add 216.221.16.0-216.221.31.255","resource_type":"ipv4","resource":"216.221.16.0/20","start":"216.221.16.0","end":"216.221.31.255","classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from ARIN-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:24+00:00","page":"https://rirtracker.com/ip/216.221.16.0-216.221.31.255/#e-4b240d46161fcf18","report_page":"https://rirtracker.com/arin/reports/2019-01-25/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.221.16.0-216.221.31.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2019-01-24 and assigned (dated 2019-01-25) on 2019-01-26. The tracker saw this range released from hold on 2018-12-18 (216.221.16.0-216.221.31.255), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2019-January/003698.html","retrieved_at":"2026-10-12T18:40:20+00:00","summary":"ARIN-Issued report for 2019-01-25: \"Add 216.221.16.0-216.221.31.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190124.gz","retrieved_at":"2026-10-12T21:59:15+00:00","summary":"ARIN delegated statistics 2019-01-24 (produced 2019-01-24T06:00:15+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190126.gz","retrieved_at":"2026-10-12T21:59:20+00:00","summary":"ARIN delegated statistics 2019-01-26 (produced 2019-01-26T06:00:17+00:00), after the report: assigned (dated 2019-01-25)"}]},{"event_id":"1fe4ea90b81b59a4","registry":"ARIN","report_date":"2019-01-25","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 216.221.16.0-216.221.31.255","resource_type":"ipv4","resource":"216.221.16.0/20","start":"216.221.16.0","end":"216.221.31.255","classification":"POOL_RECORD_CHANGE","classification_label":"Change to ARIN's own pool record","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Part of the issuance reported the same day","inventory_effect_code":"PAIRED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:24+00:00","page":"https://rirtracker.com/ip/216.221.16.0-216.221.31.255/#e-1fe4ea90b81b59a4","report_page":"https://rirtracker.com/arin/reports/2019-01-25/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.221.16.0-216.221.31.255.json","explanation":"ARIN's statistics show it reserved on 2019-01-24 and assigned (dated 2019-01-25) on 2019-01-26. ARIN removed its own pool record for this range as part of issuing it: the same report adds 216.221.16.0-216.221.31.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2019-January/003698.html","retrieved_at":"2026-10-12T18:40:20+00:00","summary":"ARIN-Issued report for 2019-01-25: \"Remove 216.221.16.0-216.221.31.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190124.gz","retrieved_at":"2026-10-12T21:59:15+00:00","summary":"ARIN delegated statistics 2019-01-24 (produced 2019-01-24T06:00:15+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190126.gz","retrieved_at":"2026-10-12T21:59:20+00:00","summary":"ARIN delegated statistics 2019-01-26 (produced 2019-01-26T06:00:17+00:00), after the report: assigned (dated 2019-01-25)"}]},{"event_id":"f9a4243fcf9a59bc","registry":"ARIN","report_date":"2018-12-18","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 216.221.16.0-216.221.31.255","resource_type":"ipv4","resource":"216.221.16.0/20","start":"216.221.16.0","end":"216.221.31.255","classification":"NO_MATERIAL_CHANGE","classification_label":"No substantive resource change found","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:22+00:00","page":"https://rirtracker.com/ip/216.221.16.0-216.221.31.255/#e-f9a4243fcf9a59bc","report_page":"https://rirtracker.com/arin/reports/2018-12-18/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.221.16.0-216.221.31.255.json","explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved).","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2018-December/003660.html","retrieved_at":"2026-10-12T18:40:18+00:00","summary":"ARIN-Issued report for 2018-12-18: \"Remove 216.221.16.0-216.221.31.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181217.gz","retrieved_at":"2026-10-12T21:57:14+00:00","summary":"ARIN delegated statistics 2018-12-17 (produced 2018-12-17T06:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181219.gz","retrieved_at":"2026-10-12T21:57:19+00:00","summary":"ARIN delegated statistics 2018-12-19 (produced 2018-12-19T06:00:13+00:00), after the report: reserved"}]},{"event_id":"0825b6e237626153","registry":"ARIN","report_date":"2015-06-09","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"216.221.16.0/20","start":"216.221.16.0","end":"216.221.31.255","classification":"REMOVED_REASON_UNKNOWN","classification_label":"Removed (return, revocation or reclamation not publicly distinguishable)","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Possible future reissue candidate after hold","inventory_effect_code":"HOLD_CANDIDATE","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:00:54+00:00","page":"https://rirtracker.com/ip/216.221.16.0-216.221.31.255/#e-0825b6e237626153","report_page":"https://rirtracker.com/arin/reports/2015-06-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.221.16.0-216.221.31.255.json","observed":"216.221.16.0/20 assigned on 2015-06-09, reserved on 2015-06-10","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_days":60,"estimated_hold_end":"2015-08-08","availability_statement":"Possible reissue candidate after this date; not confirmed available"},"explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2004-01-30) on 2015-06-08 and reserved on 2015-06-10. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2015-08-08. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150610.gz","retrieved_at":"2026-10-12T20:53:52+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 216.221.16.0/20 assigned on 2015-06-09, reserved on 2015-06-10"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150608.gz","retrieved_at":"2026-10-12T20:53:47+00:00","summary":"ARIN delegated statistics 2015-06-08 (produced 2015-06-08T05:04:45+00:00), before the report: assigned (dated 2004-01-30)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150610.gz","retrieved_at":"2026-10-12T20:53:52+00:00","summary":"ARIN delegated statistics 2015-06-10 (produced 2015-06-10T05:04:31+00:00), after the report: reserved"}]}],"classification_history":{"8b59c152cbd9361a":[{"raw_change_id":575293,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:25+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Avago Technologies U.S. Inc. (ARIN) to Arista Networks, Inc. (ARIN) on 2026-01-13 19:37 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."}],"ed4135364addb273":[{"raw_change_id":574869,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:24+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from VMWare, LLC (ARIN) to Avago Technologies U.S. Inc. (ARIN) on 2025-11-14 17:15 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."}],"f79429e24338d148":[{"raw_change_id":560669,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:50+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Pivotal Software, Inc. (ARIN) to VMWare, Inc. (ARIN) on 2020-07-13 11:13 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."}],"4b240d46161fcf18":[{"raw_change_id":158293,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:43:25+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2019-01-24 and assigned (dated 2019-01-25) on 2019-01-26. The tracker saw this range released from hold on 2018-12-18 (216.221.16.0-216.221.31.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":158293,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:28+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2019-01-24 and assigned (dated 2019-01-25) on 2019-01-26. The tracker saw this range released from hold on 2018-12-18 (216.221.16.0-216.221.31.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":158293,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:11+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2019-01-24 and assigned (dated 2019-01-25) on 2019-01-26. The tracker saw this range released from hold on 2018-12-18 (216.221.16.0-216.221.31.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":158293,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:24+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2019-01-24 and assigned (dated 2019-01-25) on 2019-01-26. The tracker saw this range released from hold on 2018-12-18 (216.221.16.0-216.221.31.255), so it appears to have been issued again from ARIN's pool."}],"1fe4ea90b81b59a4":[{"raw_change_id":158284,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:43:25+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2019-01-24 and assigned (dated 2019-01-25) on 2019-01-26. ARIN removed its own pool record for this range as part of issuing it: the same report adds 216.221.16.0-216.221.31.255. The issuance is explained on that line."},{"raw_change_id":158284,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:28+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2019-01-24 and assigned (dated 2019-01-25) on 2019-01-26. ARIN removed its own pool record for this range as part of issuing it: the same report adds 216.221.16.0-216.221.31.255. The issuance is explained on that line."},{"raw_change_id":158284,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:11+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2019-01-24 and assigned (dated 2019-01-25) on 2019-01-26. ARIN removed its own pool record for this range as part of issuing it: the same report adds 216.221.16.0-216.221.31.255. The issuance is explained on that line."},{"raw_change_id":158284,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:24+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2019-01-24 and assigned (dated 2019-01-25) on 2019-01-26. ARIN removed its own pool record for this range as part of issuing it: the same report adds 216.221.16.0-216.221.31.255. The issuance is explained on that line."}],"f9a4243fcf9a59bc":[{"raw_change_id":157672,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:43:06+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."},{"raw_change_id":157672,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:26+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."},{"raw_change_id":157672,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:09+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."},{"raw_change_id":157672,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:22+00:00","current":1,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."}],"0825b6e237626153":[{"raw_change_id":301105,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:56:36+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2004-01-30) on 2015-06-08 and reserved on 2015-06-10. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2015-08-08. This does not confirm availability."},{"raw_change_id":301105,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:13:34+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2004-01-30) on 2015-06-08 and reserved on 2015-06-10. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2015-08-08. This does not confirm availability."},{"raw_change_id":301105,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:56:57+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2004-01-30) on 2015-06-08 and reserved on 2015-06-10. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2015-08-08. This does not confirm availability."},{"raw_change_id":301105,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:00:54+00:00","current":1,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 2004-01-30) on 2015-06-08 and reserved on 2015-06-10. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2015-08-08. This does not confirm availability."}]},"arin_statistics_now":{"status":"allocated (dated 2019-01-25)"}}