{"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":"103.183.164.0/23","resource_type":"ipv4","page":"https://rirtracker.com/ip/103.183.164.0-103.183.165.255/","statistics_now":{"registry":"APNIC","status":"available"},"current_holder":{"rir":"APNIC","org":null,"how":"APNIC's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"b12eeb895f236132","registry":"APNIC","report_date":"2024-07-31","source":"statistics","raw_action":"REMOVED","raw_line":null,"resource_type":"ipv4","resource":"103.183.164.0/23","start":"103.183.164.0","end":"103.183.165.255","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":"2026-10-14T00:17:26+00:00","page":"https://rirtracker.com/ip/103.183.164.0-103.183.165.255/#e-b12eeb895f236132","report_page":"https://rirtracker.com/apnic/reports/2024-07-31/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/103.183.164.0-103.183.165.255.json","observed":"103.183.164.0/23 assigned on 2024-07-31, reserved on 2024-08-01","hold":{"hold_rule_source_url":"https://www.apnic.net/manage-ip/manage-resources/address-status","hold_rule_months":12,"estimated_hold_end":"2025-07-31","availability_statement":"Possible reissue candidate after this date; not confirmed available","hold_rule_observed":true},"explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it assigned (dated 2022-03-11) on 2024-07-31 and reserved on 2024-08-01. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, but its statistics have released returned IPv4 space a year after the removal or later since 2014, so the tracker estimates the hold ends on 2025-07-31. That is what APNIC has done, not a rule it states. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2024/delegated-apnic-extended-20240801.gz","retrieved_at":"2026-10-13T01:14:53+00:00","summary":"Found by comparing APNIC's daily statistics: 103.183.164.0/23 assigned on 2024-07-31, reserved on 2024-08-01"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2024/delegated-apnic-extended-20240731.gz","retrieved_at":"2026-10-13T01:14:49+00:00","summary":"APNIC delegated statistics 2024-07-31, before the change: assigned (dated 2022-03-11)"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2024/delegated-apnic-extended-20240801.gz","retrieved_at":"2026-10-13T01:14:53+00:00","summary":"APNIC delegated statistics 2024-08-01, after the change: reserved"}]},{"event_id":"cc5e27d8e273c856","registry":"APNIC","report_date":"2022-03-11","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"ipv4","resource":"103.183.164.0/23","start":"103.183.164.0","end":"103.183.165.255","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 APNIC-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:13:42+00:00","page":"https://rirtracker.com/ip/103.183.164.0-103.183.165.255/#e-cc5e27d8e273c856","report_page":"https://rirtracker.com/apnic/reports/2022-03-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/103.183.164.0-103.183.165.255.json","observed":"103.183.164.0/23 available on 2022-03-11, assigned on 2022-03-12","explanation":"No transfer record matches. APNIC's statistics show it available on 2022-03-11 and assigned (dated 2022-03-11) on 2022-03-12. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2022/delegated-apnic-extended-20220312.gz","retrieved_at":"2026-10-13T00:07:39+00:00","summary":"Found by comparing APNIC's daily statistics: 103.183.164.0/23 available on 2022-03-11, assigned on 2022-03-12"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2022/delegated-apnic-extended-20220311.gz","retrieved_at":"2026-10-13T00:07:35+00:00","summary":"APNIC delegated statistics 2022-03-11, before the change: available"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2022/delegated-apnic-extended-20220312.gz","retrieved_at":"2026-10-13T00:07:39+00:00","summary":"APNIC delegated statistics 2022-03-12, after the change: assigned (dated 2022-03-11)"}]}],"classification_history":{"b12eeb895f236132":[{"raw_change_id":532785,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T06:40:34+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 2022-03-11) on 2024-07-31 and reserved on 2024-08-01. 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":532785,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:27:06+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 2022-03-11) on 2024-07-31 and reserved on 2024-08-01. 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":532785,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:11:29+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 2022-03-11) on 2024-07-31 and reserved on 2024-08-01. 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":532785,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:17:26+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 2022-03-11) on 2024-07-31 and reserved on 2024-08-01. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no hold period, but its statistics have released returned IPv4 space a year after the removal or later since 2014, so the tracker estimates the hold ends on 2025-07-31. That is what APNIC has done, not a rule it states. This does not confirm availability."}],"cc5e27d8e273c856":[{"raw_change_id":486496,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T06:18:23+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2022-03-11 and assigned (dated 2022-03-11) on 2022-03-12. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC."},{"raw_change_id":486496,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:24:04+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2022-03-11 and assigned (dated 2022-03-11) on 2022-03-12. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC."},{"raw_change_id":486496,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:08:14+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2022-03-11 and assigned (dated 2022-03-11) on 2022-03-12. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC."},{"raw_change_id":486496,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:13:42+00:00","current":1,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2022-03-11 and assigned (dated 2022-03-11) on 2022-03-12. It moved from APNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by APNIC."}]},"arin_statistics_now":{"status":"not listed"}}