{"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":"204.225.42.0/23","resource_type":"ipv4","page":"https://rirtracker.com/ip/204.225.42.0-204.225.43.255/","statistics_now":{"registry":"LACNIC","status":"assigned (dated 2018-04-02)"},"current_holder":{"rir":"LACNIC","org":null,"how":"LACNIC's latest statistics"},"rdap_snapshots":[],"transfers":[],"events":[{"event_id":"405ee6f0cfb62592","registry":"LACNIC","report_date":"2018-04-02","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"ipv4","resource":"204.225.42.0/23","start":"204.225.42.0","end":"204.225.43.255","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 LACNIC-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:25+00:00","page":"https://rirtracker.com/ip/204.225.42.0-204.225.43.255/#e-405ee6f0cfb62592","report_page":"https://rirtracker.com/lacnic/reports/2018-04-02/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.225.42.0-204.225.43.255.json","observed":"204.225.42.0/23 reserved on 2018-04-01, assigned on 2018-04-02","explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2018-04-01 and assigned (dated 2018-04-02) on 2018-04-02. It moved from LACNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by LACNIC.","evidence":[{"type":"statistics_diff","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2018/delegated-lacnic-extended-20180402","retrieved_at":"2026-10-12T22:17:38+00:00","summary":"Found by comparing LACNIC's daily statistics: 204.225.42.0/23 reserved on 2018-04-01, assigned on 2018-04-02"},{"type":"delegated_before","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2018/delegated-lacnic-extended-20180401","retrieved_at":"2026-10-12T22:17:33+00:00","summary":"LACNIC delegated statistics 2018-04-01, before the change: reserved"},{"type":"delegated_after","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2018/delegated-lacnic-extended-20180402","retrieved_at":"2026-10-12T22:17:38+00:00","summary":"LACNIC delegated statistics 2018-04-02, after the change: assigned (dated 2018-04-02)"}]},{"event_id":"1fa3bff4bda7f3dc","registry":"LACNIC","report_date":"2018-03-05","source":"statistics","raw_action":"RELEASED","raw_line":null,"resource_type":"ipv4","resource":"204.225.42.0/23","start":"204.225.42.0","end":"204.225.43.255","classification":"HOLD_RELEASED","classification_label":"Released from hold (LACNIC lists it as 'available')","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"LACNIC's statistics now list it as 'available'; reissue not confirmed","inventory_effect_code":"RELEASED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:15+00:00","page":"https://rirtracker.com/ip/204.225.42.0-204.225.43.255/#e-1fa3bff4bda7f3dc","report_page":"https://rirtracker.com/lacnic/reports/2018-03-05/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.225.42.0-204.225.43.255.json","observed":"204.225.42.0/23 reserved on 2018-03-04, available on 2018-03-05","explanation":"LACNIC's statistics show it reserved on 2018-03-04 and available on 2018-03-05. LACNIC moved it from its reserved (held) records to the status it calls 'available'. That is LACNIC's own label: whether and when it is reissued is not confirmed.","evidence":[{"type":"statistics_diff","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2018/delegated-lacnic-extended-20180305","retrieved_at":"2026-10-12T22:15:23+00:00","summary":"Found by comparing LACNIC's daily statistics: 204.225.42.0/23 reserved on 2018-03-04, available on 2018-03-05"},{"type":"delegated_before","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2018/delegated-lacnic-extended-20180304","retrieved_at":"2026-10-12T22:15:18+00:00","summary":"LACNIC delegated statistics 2018-03-04, before the change: reserved"},{"type":"delegated_after","url":"https://ftp.lacnic.net/pub/stats/lacnic/archive/2018/delegated-lacnic-extended-20180305","retrieved_at":"2026-10-12T22:15:23+00:00","summary":"LACNIC delegated statistics 2018-03-05, after the change: available"}]},{"event_id":"bd144f919d594c4d","registry":"ARIN","report_date":"2012-02-22","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"204.225.42.0/23","start":"204.225.42.0","end":"204.225.43.255","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":"2026-10-13T23:56:58+00:00","page":"https://rirtracker.com/ip/204.225.42.0-204.225.43.255/#e-bd144f919d594c4d","report_page":"https://rirtracker.com/arin/reports/2012-02-22/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.225.42.0-204.225.43.255.json","observed":"204.225.42.0/23 assigned on 2012-02-22, not listed on 2012-02-23","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_days":60,"estimated_hold_end":"2012-04-22","availability_statement":"Possible reissue candidate after this date; not confirmed available"},"explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 1995-01-10) on 2012-02-21 and not issued on 2012-02-23. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2012-04-22. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120223.gz","retrieved_at":"2026-10-12T19:32:13+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 204.225.42.0/23 assigned on 2012-02-22, not listed on 2012-02-23"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120221.gz","retrieved_at":"2026-10-12T19:32:09+00:00","summary":"ARIN delegated statistics 2012-02-21, before the report: assigned (dated 1995-01-10)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120223.gz","retrieved_at":"2026-10-12T19:32:13+00:00","summary":"ARIN delegated statistics 2012-02-23, after the report: not issued"}]}],"classification_history":{"405ee6f0cfb62592":[{"raw_change_id":387166,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:34:02+00:00","current":0,"public_explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2018-04-01 and assigned (dated 2018-04-02) on 2018-04-02. The tracker saw this range released from hold on 2018-03-05 (204.225.42.0/23), so it appears to have been issued again from LACNIC's pool."},{"raw_change_id":387166,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:18:12+00:00","current":0,"public_explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2018-04-01 and assigned (dated 2018-04-02) on 2018-04-02. The tracker saw this range released from hold on 2018-03-05 (204.225.42.0/23), so it appears to have been issued again from LACNIC's pool."},{"raw_change_id":387166,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:01:56+00:00","current":0,"public_explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2018-04-01 and assigned (dated 2018-04-02) on 2018-04-02. The tracker saw this range released from hold on 2018-03-05 (204.225.42.0/23), so it appears to have been issued again from LACNIC's pool."},{"raw_change_id":387166,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:25+00:00","current":1,"public_explanation":"No transfer record matches. LACNIC's statistics show it reserved on 2018-04-01 and assigned (dated 2018-04-02) on 2018-04-02. It moved from LACNIC's unissued pool to an active registration dated around that day, so it appears to be newly issued by LACNIC."}],"1fa3bff4bda7f3dc":[{"raw_change_id":384435,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:33:10+00:00","current":0,"public_explanation":"LACNIC's statistics show it reserved on 2018-03-04 and available on 2018-03-05. LACNIC moved it from its reserved (held) records to the status it calls 'available'. That is LACNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":384435,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:18:03+00:00","current":0,"public_explanation":"LACNIC's statistics show it reserved on 2018-03-04 and available on 2018-03-05. LACNIC moved it from its reserved (held) records to the status it calls 'available'. That is LACNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":384435,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:01:47+00:00","current":0,"public_explanation":"LACNIC's statistics show it reserved on 2018-03-04 and available on 2018-03-05. LACNIC moved it from its reserved (held) records to the status it calls 'available'. That is LACNIC's own label: whether and when it is reissued is not confirmed."},{"raw_change_id":384435,"classification_code":"HOLD_RELEASED","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:15+00:00","current":1,"public_explanation":"LACNIC's statistics show it reserved on 2018-03-04 and available on 2018-03-05. LACNIC moved it from its reserved (held) records to the status it calls 'available'. That is LACNIC's own label: whether and when it is reissued is not confirmed."}],"bd144f919d594c4d":[{"raw_change_id":237802,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:23:53+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 1995-01-10) on 2012-02-21 and not issued on 2012-02-23. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2012-04-22. This does not confirm availability."},{"raw_change_id":237802,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:10:10+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 1995-01-10) on 2012-02-21 and not issued on 2012-02-23. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2012-04-22. This does not confirm availability."},{"raw_change_id":237802,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:53:16+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 1995-01-10) on 2012-02-21 and not issued on 2012-02-23. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2012-04-22. This does not confirm availability."},{"raw_change_id":237802,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:56:58+00:00","current":1,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it assigned (dated 1995-01-10) on 2012-02-21 and not issued on 2012-02-23. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2012-04-22. This does not confirm availability."}]},"arin_statistics_now":{"status":"not listed"}}