{"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":"57.206.0.0/23","resource_type":"ipv4","page":"https://rirtracker.com/ip/57.206.0.0-57.206.1.255/","statistics_now":{"registry":"APNIC","status":"reserved"},"current_holder":{"rir":"APNIC","org":null,"how":"APNIC's latest statistics"},"rdap_snapshots":[],"transfers":[{"id":92018,"date":"2022-12-20T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"RIPE NCC","recipient_rir":"APNIC","source_org":"SITA Switzerland Sarl","recipient_org":null,"range":"57.206.0.0/23","log":"RIPE NCC"},{"id":128304,"date":"2022-12-20T05:44:08Z","type":"RESOURCE_TRANSFER","source_rir":"RIPE NCC","recipient_rir":"APNIC","source_org":"ORG-SSS101-RIPE","recipient_org":"Interglobe Aviation Ltd.","range":"57.206.0.0/23","log":"APNIC"}],"events":[{"event_id":"76b8d69068955269","registry":"APNIC","report_date":"2026-02-10","source":"statistics","raw_action":"REMOVED","raw_line":null,"resource_type":"ipv4","resource":"57.206.0.0/23","start":"57.206.0.0","end":"57.206.1.255","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":"2026-10-13T23:46:04+00:00","page":"https://rirtracker.com/ip/57.206.0.0-57.206.1.255/#e-76b8d69068955269","report_page":"https://rirtracker.com/apnic/reports/2026-02-10/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/57.206.0.0-57.206.1.255.json","observed":"57.206.0.0/23 assigned on 2026-02-10, reserved on 2026-02-11","hold":{"hold_rule_source_url":"https://www.apnic.net/manage-ip/manage-resources/address-status","hold_rule_months":12,"estimated_hold_end":"2027-02-10","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 1993-06-21) on 2026-02-10 and reserved on 2026-02-11. 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 2027-02-10. 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/2026/delegated-apnic-extended-20260211.gz","retrieved_at":"2026-10-12T16:17:15+00:00","summary":"Found by comparing APNIC's daily statistics: 57.206.0.0/23 assigned on 2026-02-10, reserved on 2026-02-11"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2026/delegated-apnic-extended-20260210.gz","retrieved_at":"2026-10-12T16:17:11+00:00","summary":"APNIC delegated statistics 2026-02-10, before the change: assigned (dated 1993-06-21)"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2026/delegated-apnic-extended-20260211.gz","retrieved_at":"2026-10-12T16:17:15+00:00","summary":"APNIC delegated statistics 2026-02-11, after the change: reserved"}]},{"event_id":"5be4b5b61573a72c","registry":"RIPE NCC","report_date":"2022-12-20","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"57.206.0.0/23","start":"57.206.0.0","end":"57.206.1.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of the RIPE NCC","confidence":"CONFIRMED","source_rir":"RIPE NCC","recipient_rir":"APNIC","source_organization":"SITA Switzerland Sarl","recipient_organization":null,"inventory_effect":"Transferred out of RIPE NCC administration; not offered to RIPE NCC applicants","inventory_effect_code":"TRANSFER_OUT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:49:20+00:00","page":"https://rirtracker.com/ip/57.206.0.0-57.206.1.255/#e-5be4b5b61573a72c","report_page":"https://rirtracker.com/ripe/reports/2022-12-20/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/57.206.0.0-57.206.1.255.json","observed":"Transfer: SITA Switzerland Sarl (RIPE NCC) to (no name) (APNIC)","piece_of":{"resource":"57.206.0.0/16","page":"https://rirtracker.com/ip/57.206.0.0-57.206.255.255/"},"same_transfer_as":"8331ecc7f9a12a50","explanation":"The RIPE NCC's transfer log records a transfer from SITA Switzerland Sarl (RIPE NCC) to an unnamed organization (APNIC) on 2022-12-20 19:00 UTC: it left the RIPE NCC for APNIC. It is not a new allocation and is not offered to RIPE NCC applicants.","evidence":[{"type":"transfer","url":"https://ftp.ripe.net/pub/stats/ripencc/transfers/transfers_latest.json","retrieved_at":"2026-10-13T21:49:37+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2022-12-20 19:00 UTC, SITA Switzerland Sarl (RIPE NCC) to (no name) (APNIC); resources moved: 57.206.0.0/23"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2022/delegated-ripencc-extended-20221219.bz2","retrieved_at":"2026-10-12T23:51:15+00:00","summary":"RIPE NCC delegated statistics 2022-12-19 (produced 2022-12-19T22:59:59+00:00), before the change: assigned (dated 1993-06-21)"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2022/delegated-ripencc-extended-20221220.bz2","retrieved_at":"2026-10-12T23:51:39+00:00","summary":"RIPE NCC delegated statistics 2022-12-20 (produced 2022-12-20T22:59:59+00:00), after the change: not listed"}]},{"event_id":"8331ecc7f9a12a50","registry":"APNIC","report_date":"2022-12-20","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"57.206.0.0/23","start":"57.206.0.0","end":"57.206.1.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into APNIC","confidence":"CONFIRMED","source_rir":"RIPE NCC","recipient_rir":"APNIC","source_organization":"ORG-SSS101-RIPE","recipient_organization":"Interglobe Aviation Ltd.","inventory_effect":"Transferred into APNIC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:46+00:00","page":"https://rirtracker.com/ip/57.206.0.0-57.206.1.255/#e-8331ecc7f9a12a50","report_page":"https://rirtracker.com/apnic/reports/2022-12-20/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/57.206.0.0-57.206.1.255.json","observed":"Transfer: ORG-SSS101-RIPE (RIPE NCC) to Interglobe Aviation Ltd. (APNIC)","same_transfer_as":"5be4b5b61573a72c","explanation":"APNIC's transfer log records a transfer from ORG-SSS101-RIPE (RIPE NCC) to Interglobe Aviation Ltd. (APNIC) on 2022-12-20 05:44 UTC: it came to APNIC from the RIPE NCC. It was already issued by another registry, so this is not a new issuance.","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 2022-12-20 05:44 UTC, ORG-SSS101-RIPE (RIPE NCC) to Interglobe Aviation Ltd. (APNIC); resources moved: 57.206.0.0/23"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2022/delegated-apnic-extended-20221220.gz","retrieved_at":"2026-10-13T00:28:37+00:00","summary":"APNIC delegated statistics 2022-12-20, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2022/delegated-apnic-extended-20221221.gz","retrieved_at":"2026-10-13T00:28:52+00:00","summary":"APNIC delegated statistics 2022-12-21, after the change: assigned (dated 1993-06-21)"}]}],"classification_history":{"76b8d69068955269":[{"raw_change_id":23336,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.2.0","classified_at":"2026-10-12T17:43:12+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 1993-06-21) on 2026-02-10 and reserved on 2026-02-11. Public sources do not distinguish a voluntary return, revocation, or reclamation. APNIC publishes no fixed period for which it holds returned IPv4 before reissuing them, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":23336,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-12T18:23:06+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 1993-06-21) on 2026-02-10 and reserved on 2026-02-11. 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":23336,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:01:25+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 1993-06-21) on 2026-02-10 and reserved on 2026-02-11. 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":23336,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:43:31+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 1993-06-21) on 2026-02-10 and reserved on 2026-02-11. 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":23336,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:04+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 1993-06-21) on 2026-02-10 and reserved on 2026-02-11. 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 2027-02-10. That is what APNIC has done, not a rule it states. This does not confirm availability."}],"5be4b5b61573a72c":[{"raw_change_id":92424,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:59:29+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from SITA Switzerland Sarl (RIPE NCC) to an unnamed organization (APNIC) on 2022-12-20 19:00 UTC: it left the RIPE NCC for APNIC. It is not a new allocation and is not offered to RIPE NCC applicants."},{"raw_change_id":92424,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:04:08+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from SITA Switzerland Sarl (RIPE NCC) to an unnamed organization (APNIC) on 2022-12-20 19:00 UTC: it left the RIPE NCC for APNIC. It is not a new allocation and is not offered to RIPE NCC applicants."},{"raw_change_id":92424,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:46:33+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from SITA Switzerland Sarl (RIPE NCC) to an unnamed organization (APNIC) on 2022-12-20 19:00 UTC: it left the RIPE NCC for APNIC. It is not a new allocation and is not offered to RIPE NCC applicants."},{"raw_change_id":92424,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:49:20+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from SITA Switzerland Sarl (RIPE NCC) to an unnamed organization (APNIC) on 2022-12-20 19:00 UTC: it left the RIPE NCC for APNIC. It is not a new allocation and is not offered to RIPE NCC applicants."}],"8331ecc7f9a12a50":[{"raw_change_id":39335,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:37:27+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from ORG-SSS101-RIPE (RIPE NCC) to Interglobe Aviation Ltd. (APNIC) on 2022-12-20 05:44 UTC: it came to APNIC from the RIPE NCC. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":39335,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:02:00+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from ORG-SSS101-RIPE (RIPE NCC) to Interglobe Aviation Ltd. (APNIC) on 2022-12-20 05:44 UTC: it came to APNIC from the RIPE NCC. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":39335,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:11+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from ORG-SSS101-RIPE (RIPE NCC) to Interglobe Aviation Ltd. (APNIC) on 2022-12-20 05:44 UTC: it came to APNIC from the RIPE NCC. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":39335,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:46+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from ORG-SSS101-RIPE (RIPE NCC) to Interglobe Aviation Ltd. (APNIC) on 2022-12-20 05:44 UTC: it came to APNIC from the RIPE NCC. It was already issued by another registry, so this is not a new issuance."}]},"arin_statistics_now":{"status":"not listed"}}