{"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":"172.16.0.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/172.16.0.0-172.16.3.255/","statistics_now":{"registry":"AFRINIC","status":"not listed"},"current_holder":{"rir":null,"org":null,"how":null},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"d30cfd9391f776ee","registry":"AFRINIC","report_date":"2013-05-26","source":"statistics","raw_action":"REMOVED","raw_line":null,"resource_type":"ipv4","resource":"172.16.0.0/22","start":"172.16.0.0","end":"172.16.3.255","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":"2026-10-13T23:55:28+00:00","page":"https://rirtracker.com/ip/172.16.0.0-172.16.3.255/#e-d30cfd9391f776ee","report_page":"https://rirtracker.com/afrinic/reports/2013-05-26/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.16.0.0-172.16.3.255.json","observed":"172.16.0.0/22 allocated on 2013-05-26, not listed on 2013-05-27","explanation":"Removed from active registration. The tracker found it by comparing AFRINIC's daily statistics. AFRINIC's statistics show it allocated (dated 2013-05-21) on 2013-05-26 and not listed on 2013-05-27. Being gone from AFRINIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. AFRINIC 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.","evidence":[{"type":"statistics_diff","url":"https://ftp.afrinic.net/pub/stats/afrinic/2013/delegated-afrinic-extended-20130527","retrieved_at":"2026-10-12T18:57:40+00:00","summary":"Found by comparing AFRINIC's daily statistics: 172.16.0.0/22 allocated on 2013-05-26, not listed on 2013-05-27"},{"type":"delegated_before","url":"https://ftp.afrinic.net/pub/stats/afrinic/2013/delegated-afrinic-extended-20130526","retrieved_at":"2026-10-12T18:57:35+00:00","summary":"AFRINIC delegated statistics 2013-05-26, before the change: allocated (dated 2013-05-21)"},{"type":"delegated_after","url":"https://ftp.afrinic.net/pub/stats/afrinic/2013/delegated-afrinic-extended-20130527","retrieved_at":"2026-10-12T18:57:40+00:00","summary":"AFRINIC delegated statistics 2013-05-27, after the change: not listed"}]},{"event_id":"6ba820b73ffef90d","registry":"AFRINIC","report_date":"2013-05-21","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"ipv4","resource":"172.16.0.0/22","start":"172.16.0.0","end":"172.16.3.255","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":"2026-10-13T23:55:28+00:00","page":"https://rirtracker.com/ip/172.16.0.0-172.16.3.255/#e-6ba820b73ffef90d","report_page":"https://rirtracker.com/afrinic/reports/2013-05-21/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.16.0.0-172.16.3.255.json","observed":"172.16.0.0/22 not listed on 2013-05-21, allocated on 2013-05-22","explanation":"No transfer record matches. AFRINIC's statistics show it not listed on 2013-05-21 and allocated (dated 2013-05-21) on 2013-05-22. It wasn't in AFRINIC's statistics before, so it wasn't AFRINIC'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.afrinic.net/pub/stats/afrinic/2013/delegated-afrinic-extended-20130522","retrieved_at":"2026-10-12T18:57:14+00:00","summary":"Found by comparing AFRINIC's daily statistics: 172.16.0.0/22 not listed on 2013-05-21, allocated on 2013-05-22"},{"type":"delegated_before","url":"https://ftp.afrinic.net/pub/stats/afrinic/2013/delegated-afrinic-extended-20130521","retrieved_at":"2026-10-12T18:57:09+00:00","summary":"AFRINIC delegated statistics 2013-05-21, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.afrinic.net/pub/stats/afrinic/2013/delegated-afrinic-extended-20130522","retrieved_at":"2026-10-12T18:57:14+00:00","summary":"AFRINIC delegated statistics 2013-05-22, after the change: allocated (dated 2013-05-21)"}]}],"classification_history":{"d30cfd9391f776ee":[{"raw_change_id":212146,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T04:13:15+00:00","current":0,"public_explanation":"Removed from active registration. The tracker found it by comparing AFRINIC's daily statistics. AFRINIC's statistics show it allocated (dated 2013-05-21) on 2013-05-26 and not listed on 2013-05-27. Being gone from AFRINIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. AFRINIC 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":212146,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:08:51+00:00","current":0,"public_explanation":"Removed from active registration. The tracker found it by comparing AFRINIC's daily statistics. AFRINIC's statistics show it allocated (dated 2013-05-21) on 2013-05-26 and not listed on 2013-05-27. Being gone from AFRINIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. AFRINIC 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":212146,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:51:50+00:00","current":0,"public_explanation":"Removed from active registration. The tracker found it by comparing AFRINIC's daily statistics. AFRINIC's statistics show it allocated (dated 2013-05-21) on 2013-05-26 and not listed on 2013-05-27. Being gone from AFRINIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. AFRINIC 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":212146,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:55:28+00:00","current":1,"public_explanation":"Removed from active registration. The tracker found it by comparing AFRINIC's daily statistics. AFRINIC's statistics show it allocated (dated 2013-05-21) on 2013-05-26 and not listed on 2013-05-27. Being gone from AFRINIC's statistics entirely can also mean it moved to another registry. Public sources do not distinguish a voluntary return, revocation, or reclamation. AFRINIC 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."}],"6ba820b73ffef90d":[{"raw_change_id":212142,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T04:13:15+00:00","current":0,"public_explanation":"No transfer record matches. AFRINIC's statistics show it not listed on 2013-05-21 and allocated (dated 2013-05-21) on 2013-05-22. It wasn't in AFRINIC's statistics before, so it wasn't AFRINIC's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":212142,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:08:51+00:00","current":0,"public_explanation":"No transfer record matches. AFRINIC's statistics show it not listed on 2013-05-21 and allocated (dated 2013-05-21) on 2013-05-22. It wasn't in AFRINIC's statistics before, so it wasn't AFRINIC's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":212142,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:51:50+00:00","current":0,"public_explanation":"No transfer record matches. AFRINIC's statistics show it not listed on 2013-05-21 and allocated (dated 2013-05-21) on 2013-05-22. It wasn't in AFRINIC's statistics before, so it wasn't AFRINIC's unissued inventory; it may have come from another registry in a transfer not yet in the log."},{"raw_change_id":212142,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:55:28+00:00","current":1,"public_explanation":"No transfer record matches. AFRINIC's statistics show it not listed on 2013-05-21 and allocated (dated 2013-05-21) on 2013-05-22. It wasn't in AFRINIC's statistics before, so it wasn't AFRINIC's unissued inventory; it may have come from another registry in a transfer not yet in the log."}]},"arin_statistics_now":{"status":"not listed"}}