{"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":"158.222.16.0/20","resource_type":"ipv4","page":"https://rirtracker.com/ip/158.222.16.0-158.222.31.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2015-04-13)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"ec34c874c3096206","registry":"ARIN","report_date":"2015-04-13","source":"arin_issued","raw_action":"ADD","raw_line":"Add 158.222.16.0-158.222.31.255","resource_type":"ipv4","resource":"158.222.16.0/20","start":"158.222.16.0","end":"158.222.31.255","classification":"APPARENT_NEW_ISSUANCE","classification_label":"Apparent new issuance","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":"2026-10-13T23:51:22+00:00","page":"https://rirtracker.com/ip/158.222.16.0-158.222.31.255/#e-ec34c874c3096206","report_page":"https://rirtracker.com/arin/reports/2015-04-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/158.222.16.0-158.222.31.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2015-04-12 and allocated (dated 2015-04-13) on 2015-04-14. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2015-April/002314.html","retrieved_at":"2026-10-12T18:38:45+00:00","summary":"ARIN-Issued report for 2015-04-13: \"Add 158.222.16.0-158.222.31.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150412.gz","retrieved_at":"2026-10-12T20:51:00+00:00","summary":"ARIN delegated statistics 2015-04-12 (produced 2015-04-12T05:04:17+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150414.gz","retrieved_at":"2026-10-12T20:51:05+00:00","summary":"ARIN delegated statistics 2015-04-14 (produced 2015-04-14T05:04:32+00:00), after the report: allocated (dated 2015-04-13)"}]},{"event_id":"919e09237c4b6058","registry":"ARIN","report_date":"2015-04-13","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 158.222.16.0-158.222.31.255","resource_type":"ipv4","resource":"158.222.16.0/20","start":"158.222.16.0","end":"158.222.31.255","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":"2026-10-13T23:51:22+00:00","page":"https://rirtracker.com/ip/158.222.16.0-158.222.31.255/#e-919e09237c4b6058","report_page":"https://rirtracker.com/arin/reports/2015-04-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/158.222.16.0-158.222.31.255.json","explanation":"ARIN's statistics show it reserved on 2015-04-12 and allocated (dated 2015-04-13) on 2015-04-14. ARIN removed its own pool record for this range as part of issuing it: the same report adds 158.222.16.0-158.222.31.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2015-April/002314.html","retrieved_at":"2026-10-12T18:38:45+00:00","summary":"ARIN-Issued report for 2015-04-13: \"Remove 158.222.16.0-158.222.31.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150412.gz","retrieved_at":"2026-10-12T20:51:00+00:00","summary":"ARIN delegated statistics 2015-04-12 (produced 2015-04-12T05:04:17+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150414.gz","retrieved_at":"2026-10-12T20:51:05+00:00","summary":"ARIN delegated statistics 2015-04-14 (produced 2015-04-14T05:04:32+00:00), after the report: allocated (dated 2015-04-13)"}]},{"event_id":"8e99ba0d30ee4b89","registry":"ARIN","report_date":"2014-07-28","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 158.222.16.0-158.222.31.255","resource_type":"ipv4","resource":"158.222.16.0/20","start":"158.222.16.0","end":"158.222.31.255","classification":"HOLD_RELEASED","classification_label":"Released from hold (ARIN lists it as 'available')","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"ARIN's statistics now list it as 'available'; reissue not confirmed","inventory_effect_code":"RELEASED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:14+00:00","page":"https://rirtracker.com/ip/158.222.16.0-158.222.31.255/#e-8e99ba0d30ee4b89","report_page":"https://rirtracker.com/arin/reports/2014-07-28/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/158.222.16.0-158.222.31.255.json","explanation":"ARIN's statistics show it reserved on 2014-07-27 and available on 2014-07-29. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. That is ARIN's own label: whether and when it is reissued is not confirmed.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2014-July/002056.html","retrieved_at":"2026-10-12T18:38:26+00:00","summary":"ARIN-Issued report for 2014-07-28: \"Remove 158.222.16.0-158.222.31.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140727.gz","retrieved_at":"2026-10-12T20:38:39+00:00","summary":"ARIN delegated statistics 2014-07-27 (produced 2014-07-27T05:03:48+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140729.gz","retrieved_at":"2026-10-12T20:38:44+00:00","summary":"ARIN delegated statistics 2014-07-29 (produced 2014-07-29T05:03:52+00:00), after the report: available"}]},{"event_id":"6c987224809558a4","registry":"ARIN","report_date":"2014-07-24","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 158.222.16.0-158.222.31.255","resource_type":"ipv4","resource":"158.222.16.0/20","start":"158.222.16.0","end":"158.222.31.255","classification":"NO_MATERIAL_CHANGE","classification_label":"No substantive resource change found","confidence":"OBSERVED_ONLY","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":"2026-10-13T23:51:13+00:00","page":"https://rirtracker.com/ip/158.222.16.0-158.222.31.255/#e-6c987224809558a4","report_page":"https://rirtracker.com/arin/reports/2014-07-24/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/158.222.16.0-158.222.31.255.json","explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2014-07-23: Remove 158.222.16.0-158.222.31.255), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2014-July/002052.html","retrieved_at":"2026-10-12T18:38:26+00:00","summary":"ARIN-Issued report for 2014-07-24: \"Remove 158.222.16.0-158.222.31.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140723.gz","retrieved_at":"2026-10-12T20:38:23+00:00","summary":"ARIN delegated statistics 2014-07-23 (produced 2014-07-23T05:04:37+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140725.gz","retrieved_at":"2026-10-12T20:38:34+00:00","summary":"ARIN delegated statistics 2014-07-25 (produced 2014-07-25T05:03:53+00:00), after the report: reserved"}]},{"event_id":"567c68715863b67e","registry":"ARIN","report_date":"2014-07-23","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 158.222.16.0-158.222.31.255","resource_type":"ipv4","resource":"158.222.16.0/20","start":"158.222.16.0","end":"158.222.31.255","classification":"NO_MATERIAL_CHANGE","classification_label":"No substantive resource change found","confidence":"OBSERVED_ONLY","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":"2026-10-13T23:51:13+00:00","page":"https://rirtracker.com/ip/158.222.16.0-158.222.31.255/#e-567c68715863b67e","report_page":"https://rirtracker.com/arin/reports/2014-07-23/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/158.222.16.0-158.222.31.255.json","explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2014-07-24: Remove 158.222.16.0-158.222.31.255), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2014-July/002051.html","retrieved_at":"2026-10-12T18:38:26+00:00","summary":"ARIN-Issued report for 2014-07-23: \"Remove 158.222.16.0-158.222.31.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140722.gz","retrieved_at":"2026-10-12T20:38:21+00:00","summary":"ARIN delegated statistics 2014-07-22 (produced 2014-07-22T05:03:37+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140724.gz","retrieved_at":"2026-10-12T20:38:26+00:00","summary":"ARIN delegated statistics 2014-07-24 (produced 2014-07-24T05:03:52+00:00), after the report: reserved"}]}],"classification_history":{"ec34c874c3096206":[{"raw_change_id":136982,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:30:30+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2015-04-12 and allocated (dated 2015-04-13) on 2015-04-14. The tracker saw this range released from hold on 2014-07-28 (158.222.16.0-158.222.31.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":136982,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:41+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2015-04-12 and allocated (dated 2015-04-13) on 2015-04-14. The tracker saw this range released from hold on 2014-07-28 (158.222.16.0-158.222.31.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":136982,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:18+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2015-04-12 and allocated (dated 2015-04-13) on 2015-04-14. The tracker saw this range released from hold on 2014-07-28 (158.222.16.0-158.222.31.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":136982,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:22+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2015-04-12 and allocated (dated 2015-04-13) on 2015-04-14. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}],"919e09237c4b6058":[{"raw_change_id":136967,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:30:28+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2015-04-12 and allocated (dated 2015-04-13) on 2015-04-14. ARIN removed its own pool record for this range as part of issuing it: the same report adds 158.222.16.0-158.222.31.255. The issuance is explained on that line."},{"raw_change_id":136967,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:41+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2015-04-12 and allocated (dated 2015-04-13) on 2015-04-14. ARIN removed its own pool record for this range as part of issuing it: the same report adds 158.222.16.0-158.222.31.255. The issuance is explained on that line."},{"raw_change_id":136967,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:18+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2015-04-12 and allocated (dated 2015-04-13) on 2015-04-14. ARIN removed its own pool record for this range as part of issuing it: the same report adds 158.222.16.0-158.222.31.255. The issuance is explained on that line."},{"raw_change_id":136967,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:22+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2015-04-12 and allocated (dated 2015-04-13) on 2015-04-14. ARIN removed its own pool record for this range as part of issuing it: the same report adds 158.222.16.0-158.222.31.255. The issuance is explained on that line."}],"8e99ba0d30ee4b89":[{"raw_change_id":133241,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:25:52+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2014-07-27 and available on 2014-07-29. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. That is ARIN's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":133241,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:35+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2014-07-27 and available on 2014-07-29. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. That is ARIN's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":133241,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:11+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2014-07-27 and available on 2014-07-29. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. That is ARIN's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":133241,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:14+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2014-07-27 and available on 2014-07-29. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. That is ARIN's own label: whether and when it is reissued is not confirmed."}],"6c987224809558a4":[{"raw_change_id":133198,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:25:49+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2014-07-23: Remove 158.222.16.0-158.222.31.255), so the before-and-after statistics may include it."},{"raw_change_id":133198,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:35+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2014-07-23: Remove 158.222.16.0-158.222.31.255), so the before-and-after statistics may include it."},{"raw_change_id":133198,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:11+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2014-07-23: Remove 158.222.16.0-158.222.31.255), so the before-and-after statistics may include it."},{"raw_change_id":133198,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:13+00:00","current":1,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2014-07-23: Remove 158.222.16.0-158.222.31.255), so the before-and-after statistics may include it."}],"567c68715863b67e":[{"raw_change_id":133188,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:25:48+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2014-07-24: Remove 158.222.16.0-158.222.31.255), so the before-and-after statistics may include it."},{"raw_change_id":133188,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:35+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2014-07-24: Remove 158.222.16.0-158.222.31.255), so the before-and-after statistics may include it."},{"raw_change_id":133188,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:11+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2014-07-24: Remove 158.222.16.0-158.222.31.255), so the before-and-after statistics may include it."},{"raw_change_id":133188,"classification_code":"NO_MATERIAL_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:13+00:00","current":1,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved). Another change to this range was reported the day before or after (2014-07-24: Remove 158.222.16.0-158.222.31.255), so the before-and-after statistics may include it."}]},"arin_statistics_now":{"status":"allocated (dated 2015-04-13)"}}