{"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":"180.235.136.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/180.235.136.0-180.235.139.255/","statistics_now":{"registry":"APNIC","status":"allocated (dated 2015-11-03)"},"current_holder":{"rir":"APNIC","org":"xTom Hong Kong Limited","how":"APNIC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":126408,"date":"2020-01-13T05:46:14Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"APNIC","source_org":"xTom Shanghai Limited","recipient_org":"xTom Hong Kong Limited","range":"180.235.136.0/22","log":"APNIC"}],"events":[{"event_id":"fd11da70837dff51","registry":"APNIC","report_date":"2020-01-13","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"180.235.136.0/22","start":"180.235.136.0","end":"180.235.139.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-APNIC transfer","confidence":"CONFIRMED","source_rir":"APNIC","recipient_rir":"APNIC","source_organization":"xTom Shanghai Limited","recipient_organization":"xTom Hong Kong Limited","inventory_effect":"No effect on APNIC applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:39+00:00","page":"https://rirtracker.com/ip/180.235.136.0-180.235.139.255/#e-fd11da70837dff51","report_page":"https://rirtracker.com/apnic/reports/2020-01-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/180.235.136.0-180.235.139.255.json","observed":"Transfer: xTom Shanghai Limited (APNIC) to xTom Hong Kong Limited (APNIC)","explanation":"APNIC's transfer log records a transfer from xTom Shanghai Limited (APNIC) to xTom Hong Kong Limited (APNIC) on 2020-01-13 05:46 UTC. The registration changed hands; it is not a new allocation from APNIC.","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 2020-01-13 05:46 UTC, xTom Shanghai Limited (APNIC) to xTom Hong Kong Limited (APNIC); resources moved: 180.235.136.0/22"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2020/delegated-apnic-extended-20200113.gz","retrieved_at":"2026-10-12T23:10:24+00:00","summary":"APNIC delegated statistics 2020-01-13, before the change: allocated (dated 2015-11-03)"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2020/delegated-apnic-extended-20200114.gz","retrieved_at":"2026-10-12T23:10:27+00:00","summary":"APNIC delegated statistics 2020-01-14, after the change: allocated (dated 2015-11-03)"}]},{"event_id":"7c36f9bd0cf8c1b0","registry":"APNIC","report_date":"2015-11-03","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"ipv4","resource":"180.235.136.0/22","start":"180.235.136.0","end":"180.235.139.255","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 APNIC-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:03:00+00:00","page":"https://rirtracker.com/ip/180.235.136.0-180.235.139.255/#e-7c36f9bd0cf8c1b0","report_page":"https://rirtracker.com/apnic/reports/2015-11-03/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/180.235.136.0-180.235.139.255.json","observed":"180.235.136.0/22 available on 2015-11-03, allocated on 2015-11-04","explanation":"No transfer record matches. APNIC's statistics show it available on 2015-11-03 and allocated (dated 2015-11-03) on 2015-11-04. The tracker saw this range released from hold on 2015-10-28 (180.235.136.0/22), so it appears to have been issued again from APNIC's pool.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2015/delegated-apnic-extended-20151104.gz","retrieved_at":"2026-10-12T21:27:10+00:00","summary":"Found by comparing APNIC's daily statistics: 180.235.136.0/22 available on 2015-11-03, allocated on 2015-11-04"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2015/delegated-apnic-extended-20151103.gz","retrieved_at":"2026-10-12T21:27:01+00:00","summary":"APNIC delegated statistics 2015-11-03, before the change: available"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2015/delegated-apnic-extended-20151104.gz","retrieved_at":"2026-10-12T21:27:10+00:00","summary":"APNIC delegated statistics 2015-11-04, after the change: allocated (dated 2015-11-03)"}]},{"event_id":"bfdf0f4a1dfd8122","registry":"APNIC","report_date":"2015-10-28","source":"statistics","raw_action":"RELEASED","raw_line":null,"resource_type":"ipv4","resource":"180.235.136.0/22","start":"180.235.136.0","end":"180.235.139.255","classification":"HOLD_RELEASED","classification_label":"Released from hold (APNIC lists it as 'available')","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"APNIC's statistics now list it as 'available'; reissue not confirmed","inventory_effect_code":"RELEASED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:02:57+00:00","page":"https://rirtracker.com/ip/180.235.136.0-180.235.139.255/#e-bfdf0f4a1dfd8122","report_page":"https://rirtracker.com/apnic/reports/2015-10-28/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/180.235.136.0-180.235.139.255.json","observed":"180.235.136.0/22 reserved on 2015-10-28, available on 2015-10-29","explanation":"APNIC's statistics show it reserved on 2015-10-28 and available on 2015-10-29. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2010-09-07, 1877 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2015/delegated-apnic-extended-20151029.gz","retrieved_at":"2026-10-12T21:26:44+00:00","summary":"Found by comparing APNIC's daily statistics: 180.235.136.0/22 reserved on 2015-10-28, available on 2015-10-29"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2015/delegated-apnic-extended-20151028.gz","retrieved_at":"2026-10-12T21:26:41+00:00","summary":"APNIC delegated statistics 2015-10-28, before the change: reserved"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2015/delegated-apnic-extended-20151029.gz","retrieved_at":"2026-10-12T21:26:44+00:00","summary":"APNIC delegated statistics 2015-10-29, after the change: available"}]},{"event_id":"9b4b304d085342ce","registry":"APNIC","report_date":"2010-09-07","source":"statistics","raw_action":"REMOVED","raw_line":null,"resource_type":"ipv4","resource":"180.235.136.0/22","start":"180.235.136.0","end":"180.235.139.255","classification":"REMOVED_REASON_UNKNOWN","classification_label":"Removed (return, revocation or reclamation not publicly distinguishable)","confidence":"OBSERVED_ONLY","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":"2026-10-13T23:56:40+00:00","page":"https://rirtracker.com/ip/180.235.136.0-180.235.139.255/#e-9b4b304d085342ce","report_page":"https://rirtracker.com/apnic/reports/2010-09-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/180.235.136.0-180.235.139.255.json","observed":"180.235.136.0/22 assigned on 2010-09-07, not listed on 2010-09-08","explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it assigned (dated 2009-11-04) on 2010-09-07 and not listed on 2010-09-08. Being gone from APNIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, and its statistics show a steady one (a year) only for removals from 2014-07-01 on; this one came earlier, so the tracker gives no estimate. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2010/delegated-apnic-extended-20100908.gz","retrieved_at":"2026-10-12T19:24:28+00:00","summary":"Found by comparing APNIC's daily statistics: 180.235.136.0/22 assigned on 2010-09-07, not listed on 2010-09-08"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2010/delegated-apnic-extended-20100907.gz","retrieved_at":"2026-10-12T19:24:25+00:00","summary":"APNIC delegated statistics 2010-09-07, before the change: assigned (dated 2009-11-04)"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2010/delegated-apnic-extended-20100908.gz","retrieved_at":"2026-10-12T19:24:28+00:00","summary":"APNIC delegated statistics 2010-09-08, after the change: not listed"}]},{"event_id":"1c4f3feaea5bcbd9","registry":"APNIC","report_date":"2009-11-04","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"ipv4","resource":"180.235.136.0/22","start":"180.235.136.0","end":"180.235.139.255","classification":"UNRESOLVED","classification_label":"Unresolved change","confidence":"OBSERVED_ONLY","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Inventory effect unknown","inventory_effect_code":"UNKNOWN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:55:56+00:00","page":"https://rirtracker.com/ip/180.235.136.0-180.235.139.255/#e-1c4f3feaea5bcbd9","report_page":"https://rirtracker.com/apnic/reports/2009-11-04/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/180.235.136.0-180.235.139.255.json","observed":"180.235.136.0/22 not listed on 2009-11-04, assigned on 2009-11-05","explanation":"No transfer record matches. APNIC's statistics show it not listed on 2009-11-04 and assigned (dated 2009-11-04) on 2009-11-05. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2009/delegated-apnic-extended-20091105.gz","retrieved_at":"2026-10-12T19:08:46+00:00","summary":"Found by comparing APNIC's daily statistics: 180.235.136.0/22 not listed on 2009-11-04, assigned on 2009-11-05"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2009/delegated-apnic-extended-20091104.gz","retrieved_at":"2026-10-12T19:08:43+00:00","summary":"APNIC delegated statistics 2009-11-04, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2009/delegated-apnic-extended-20091105.gz","retrieved_at":"2026-10-12T19:08:46+00:00","summary":"APNIC delegated statistics 2009-11-05, after the change: assigned (dated 2009-11-04)"}]}],"classification_history":{"fd11da70837dff51":[{"raw_change_id":36303,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:36:12+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from xTom Shanghai Limited (APNIC) to xTom Hong Kong Limited (APNIC) on 2020-01-13 05:46 UTC. The registration changed hands; it is not a new allocation from APNIC."},{"raw_change_id":36303,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:01:54+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from xTom Shanghai Limited (APNIC) to xTom Hong Kong Limited (APNIC) on 2020-01-13 05:46 UTC. The registration changed hands; it is not a new allocation from APNIC."},{"raw_change_id":36303,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:04+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from xTom Shanghai Limited (APNIC) to xTom Hong Kong Limited (APNIC) on 2020-01-13 05:46 UTC. The registration changed hands; it is not a new allocation from APNIC."},{"raw_change_id":36303,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:39+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from xTom Shanghai Limited (APNIC) to xTom Hong Kong Limited (APNIC) on 2020-01-13 05:46 UTC. The registration changed hands; it is not a new allocation from APNIC."}],"7c36f9bd0cf8c1b0":[{"raw_change_id":333841,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:11:28+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2015-11-03 and allocated (dated 2015-11-03) on 2015-11-04. The tracker saw this range released from hold on 2015-10-28 (180.235.136.0/22), so it appears to have been issued again from APNIC's pool."},{"raw_change_id":333841,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:15:22+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2015-11-03 and allocated (dated 2015-11-03) on 2015-11-04. The tracker saw this range released from hold on 2015-10-28 (180.235.136.0/22), so it appears to have been issued again from APNIC's pool."},{"raw_change_id":333841,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:58:53+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2015-11-03 and allocated (dated 2015-11-03) on 2015-11-04. The tracker saw this range released from hold on 2015-10-28 (180.235.136.0/22), so it appears to have been issued again from APNIC's pool."},{"raw_change_id":333841,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:03:00+00:00","current":1,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2015-11-03 and allocated (dated 2015-11-03) on 2015-11-04. The tracker saw this range released from hold on 2015-10-28 (180.235.136.0/22), so it appears to have been issued again from APNIC's pool."}],"bfdf0f4a1dfd8122":[{"raw_change_id":333135,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:11:01+00:00","current":0,"public_explanation":"APNIC's statistics show it reserved on 2015-10-28 and available on 2015-10-29. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2010-09-07, 1877 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":333135,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:15:20+00:00","current":0,"public_explanation":"APNIC's statistics show it reserved on 2015-10-28 and available on 2015-10-29. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2010-09-07, 1877 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":333135,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:58:50+00:00","current":0,"public_explanation":"APNIC's statistics show it reserved on 2015-10-28 and available on 2015-10-29. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2010-09-07, 1877 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":333135,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:02:57+00:00","current":1,"public_explanation":"APNIC's statistics show it reserved on 2015-10-28 and available on 2015-10-29. APNIC moved it from its reserved (held) records to the status it calls 'available'. The tracker saw it removed from registration on 2010-09-07, 1877 days earlier. That is APNIC's own label: whether and when it is reissued is not confirmed."}],"9b4b304d085342ce":[{"raw_change_id":232695,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T04:21:29+00:00","current":0,"public_explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it assigned (dated 2009-11-04) on 2010-09-07 and not listed on 2010-09-08. Being gone from APNIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no fixed period for which it holds returned IPv4 space before reissuing it, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":232695,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:09:54+00:00","current":0,"public_explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it assigned (dated 2009-11-04) on 2010-09-07 and not listed on 2010-09-08. Being gone from APNIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no fixed period for which it holds returned IPv4 space before reissuing it, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":232695,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:52:59+00:00","current":0,"public_explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it assigned (dated 2009-11-04) on 2010-09-07 and not listed on 2010-09-08. Being gone from APNIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no fixed period for which it holds returned IPv4 space before reissuing it, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":232695,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:56:40+00:00","current":1,"public_explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it assigned (dated 2009-11-04) on 2010-09-07 and not listed on 2010-09-08. Being gone from APNIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, and its statistics show a steady one (a year) only for removals from 2014-07-01 on; this one came earlier, so the tracker gives no estimate. This does not confirm availability."}],"1c4f3feaea5bcbd9":[{"raw_change_id":219998,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T04:16:37+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2009-11-04 and assigned (dated 2009-11-04) on 2009-11-05. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":219998,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:09:15+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2009-11-04 and assigned (dated 2009-11-04) on 2009-11-05. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":219998,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:52:16+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2009-11-04 and assigned (dated 2009-11-04) on 2009-11-05. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":219998,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:55:56+00:00","current":1,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2009-11-04 and assigned (dated 2009-11-04) on 2009-11-05. It wasn't in APNIC's statistics before, so it wasn't APNIC's unissued inventory; it may have come from another registry in a transfer not yet in the log."}]},"arin_statistics_now":{"status":"not listed"}}