{"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":"AS4819","resource_type":"asn","page":"https://rirtracker.com/asn/4819/","statistics_now":{"registry":"APNIC","status":"allocated (dated 2010-04-06)"},"current_holder":{"rir":"APNIC","org":null,"how":"APNIC's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"553a97619a996e75","registry":"APNIC","report_date":"2010-04-06","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"asn","resource":"AS4819","start":4819,"end":4819,"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":"2026-10-13T23:56:19+00:00","page":"https://rirtracker.com/asn/4819/#e-553a97619a996e75","report_page":"https://rirtracker.com/apnic/reports/2010-04-06/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/4819.json","observed":"AS4819 not listed on 2010-04-06, allocated on 2010-04-07","explanation":"No transfer record matches. APNIC's statistics show it not listed on 2010-04-06 and allocated (dated 2010-04-06) on 2010-04-07. 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/2010/delegated-apnic-extended-20100407.gz","retrieved_at":"2026-10-12T19:16:34+00:00","summary":"Found by comparing APNIC's daily statistics: AS4819 not listed on 2010-04-06, allocated on 2010-04-07"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2010/delegated-apnic-extended-20100406.gz","retrieved_at":"2026-10-12T19:16:31+00:00","summary":"APNIC delegated statistics 2010-04-06, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2010/delegated-apnic-extended-20100407.gz","retrieved_at":"2026-10-12T19:16:34+00:00","summary":"APNIC delegated statistics 2010-04-07, after the change: allocated (dated 2010-04-06)"}]},{"event_id":"729c45e67e67bc57","registry":"APNIC","report_date":"2009-04-01","source":"statistics","raw_action":"REMOVED","raw_line":null,"resource_type":"asn","resource":"AS4819","start":4819,"end":4819,"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":"2026-10-13T23:55:26+00:00","page":"https://rirtracker.com/asn/4819/#e-729c45e67e67bc57","report_page":"https://rirtracker.com/apnic/reports/2009-04-01/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/4819.json","observed":"AS4819 allocated on 2009-04-01, not listed on 2009-04-02","explanation":"Removed from active registration. The tracker found it by comparing APNIC's daily statistics. APNIC's statistics show it allocated (dated 2001-12-10) on 2009-04-01 and not listed on 2009-04-02. 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/2009/delegated-apnic-extended-20090402.gz","retrieved_at":"2026-10-12T18:57:22+00:00","summary":"Found by comparing APNIC's daily statistics: AS4819 allocated on 2009-04-01, not listed on 2009-04-02"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2009/delegated-apnic-extended-20090401.gz","retrieved_at":"2026-10-12T18:57:19+00:00","summary":"APNIC delegated statistics 2009-04-01, before the change: allocated (dated 2001-12-10)"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2009/delegated-apnic-extended-20090402.gz","retrieved_at":"2026-10-12T18:57:22+00:00","summary":"APNIC delegated statistics 2009-04-02, after the change: not listed"}]}],"classification_history":{"553a97619a996e75":[{"raw_change_id":226469,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T04:19:01+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2010-04-06 and allocated (dated 2010-04-06) on 2010-04-07. 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":226469,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:09:35+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2010-04-06 and allocated (dated 2010-04-06) on 2010-04-07. 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":226469,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:52:38+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2010-04-06 and allocated (dated 2010-04-06) on 2010-04-07. 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":226469,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:56:19+00:00","current":1,"public_explanation":"No transfer record matches. APNIC's statistics show it not listed on 2010-04-06 and allocated (dated 2010-04-06) on 2010-04-07. 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."}],"729c45e67e67bc57":[{"raw_change_id":211692,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T04:13:05+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 2001-12-10) on 2009-04-01 and not listed on 2009-04-02. 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 ASNs before reissuing them, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":211692,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:08:50+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 2001-12-10) on 2009-04-01 and not listed on 2009-04-02. 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 ASNs before reissuing them, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":211692,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:51:49+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 2001-12-10) on 2009-04-01 and not listed on 2009-04-02. 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 ASNs before reissuing them, so the tracker gives no estimate. This does not confirm availability."},{"raw_change_id":211692,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:55:26+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 allocated (dated 2001-12-10) on 2009-04-01 and not listed on 2009-04-02. 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."}]},"arin_statistics_now":{"status":"not listed"}}