{"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":"121.93.0.0/17","resource_type":"ipv4","page":"https://rirtracker.com/ip/121.93.0.0-121.93.127.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2025-01-13)"},"current_holder":{"rir":"ARIN","org":"AMAZO-4","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":129925,"date":"2025-01-14T00:27:41Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"ARIN","source_org":"Japan Network Information Center/INFOWEB","recipient_org":"AMAZO-4","range":"121.93.0.0/17","log":"APNIC"},{"id":38375,"date":"2025-01-13T19:25:24Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"ARIN","source_org":"FUJITSU LIMITED","recipient_org":"Amazon.com, Inc.","range":"121.93.0.0/17","log":"ARIN"}],"events":[{"event_id":"9af27e63ddcba6c7","registry":"APNIC","report_date":"2025-01-20","source":"statistics","raw_action":"REMOVED","raw_line":null,"resource_type":"ipv4","resource":"121.93.0.0/17","start":"121.93.0.0","end":"121.93.127.255","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":"2026-10-14T00:17:49+00:00","page":"https://rirtracker.com/ip/121.93.0.0-121.93.127.255/#e-9af27e63ddcba6c7","report_page":"https://rirtracker.com/apnic/reports/2025-01-20/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/121.93.0.0-121.93.127.255.json","observed":"121.93.0.0/17 allocated on 2025-01-20, not listed on 2025-01-21","hold":{"hold_rule_source_url":"https://www.apnic.net/manage-ip/manage-resources/address-status","hold_rule_months":12,"estimated_hold_end":"2026-01-20","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 allocated (dated 2006-07-12) on 2025-01-20 and not listed on 2025-01-21. 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, 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 2026-01-20. 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/2025/delegated-apnic-extended-20250121.gz","retrieved_at":"2026-10-13T01:28:07+00:00","summary":"Found by comparing APNIC's daily statistics: 121.93.0.0/17 allocated on 2025-01-20, not listed on 2025-01-21"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2025/delegated-apnic-extended-20250120.gz","retrieved_at":"2026-10-13T01:28:03+00:00","summary":"APNIC delegated statistics 2025-01-20, before the change: allocated (dated 2006-07-12)"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2025/delegated-apnic-extended-20250121.gz","retrieved_at":"2026-10-13T01:28:07+00:00","summary":"APNIC delegated statistics 2025-01-21, after the change: not listed"}]},{"event_id":"215adaf630e992c1","registry":"APNIC","report_date":"2025-01-14","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"121.93.0.0/17","start":"121.93.0.0","end":"121.93.127.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of APNIC","confidence":"CONFIRMED","source_rir":"APNIC","recipient_rir":"ARIN","source_organization":"Japan Network Information Center/INFOWEB","recipient_organization":"AMAZO-4","inventory_effect":"Transferred out of APNIC administration; not offered to APNIC applicants","inventory_effect_code":"TRANSFER_OUT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:53+00:00","page":"https://rirtracker.com/ip/121.93.0.0-121.93.127.255/#e-215adaf630e992c1","report_page":"https://rirtracker.com/apnic/reports/2025-01-14/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/121.93.0.0-121.93.127.255.json","observed":"Transfer: Japan Network Information Center/INFOWEB (APNIC) to AMAZO-4 (ARIN)","piece_of":{"resource":"121.92.0.0/15","page":"https://rirtracker.com/ip/121.92.0.0-121.93.255.255/"},"same_transfer_as":"cd93cbefea49e3bc","explanation":"APNIC's transfer log records a transfer from Japan Network Information Center/INFOWEB (APNIC) to AMAZO-4 (ARIN) on 2025-01-14 00:27 UTC: it left APNIC for ARIN. It is not a new allocation and is not offered to APNIC applicants.","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 2025-01-14 00:27 UTC, Japan Network Information Center/INFOWEB (APNIC) to AMAZO-4 (ARIN); resources moved: 121.93.0.0/17"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2025/delegated-apnic-extended-20250114.gz","retrieved_at":"2026-10-13T01:27:26+00:00","summary":"APNIC delegated statistics 2025-01-14, before the change: allocated (dated 2006-07-12)"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2025/delegated-apnic-extended-20250115.gz","retrieved_at":"2026-10-13T01:27:43+00:00","summary":"APNIC delegated statistics 2025-01-15, after the change: allocated (dated 2006-07-12)"}]}],"classification_history":{"9af27e63ddcba6c7":[{"raw_change_id":538533,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T06:43:35+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 allocated (dated 2006-07-12) on 2025-01-20 and not listed on 2025-01-21. 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":538533,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:27:24+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 allocated (dated 2006-07-12) on 2025-01-20 and not listed on 2025-01-21. 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":538533,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T15:11:49+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 allocated (dated 2006-07-12) on 2025-01-20 and not listed on 2025-01-21. 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":538533,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-14T00:17:49+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 allocated (dated 2006-07-12) on 2025-01-20 and not listed on 2025-01-21. 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, 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 2026-01-20. That is what APNIC has done, not a rule it states. This does not confirm availability."}],"215adaf630e992c1":[{"raw_change_id":41946,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:38:40+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from Japan Network Information Center/INFOWEB (APNIC) to AMAZO-4 (ARIN) on 2025-01-14 00:27 UTC: it left APNIC for ARIN. It is not a new allocation and is not offered to APNIC applicants."},{"raw_change_id":41946,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:02:05+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from Japan Network Information Center/INFOWEB (APNIC) to AMAZO-4 (ARIN) on 2025-01-14 00:27 UTC: it left APNIC for ARIN. It is not a new allocation and is not offered to APNIC applicants."},{"raw_change_id":41946,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:17+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from Japan Network Information Center/INFOWEB (APNIC) to AMAZO-4 (ARIN) on 2025-01-14 00:27 UTC: it left APNIC for ARIN. It is not a new allocation and is not offered to APNIC applicants."},{"raw_change_id":41946,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:53+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from Japan Network Information Center/INFOWEB (APNIC) to AMAZO-4 (ARIN) on 2025-01-14 00:27 UTC: it left APNIC for ARIN. It is not a new allocation and is not offered to APNIC applicants."}]},"arin_statistics_now":{"status":"allocated (dated 2025-01-13)"}}