{"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":"204.128.146.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/204.128.146.0-204.128.146.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2011-02-23)"},"current_holder":{"rir":"ARIN","org":"RXO Corporate Solutions, LLC","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":33602,"date":"2023-11-15T19:48:46Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Express-1, Inc.","recipient_org":"RXO Corporate Solutions, LLC","range":"204.128.146.0/24","log":"ARIN"}],"events":[{"event_id":"a6fb10b162d08028","registry":"ARIN","report_date":"2024-11-11","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"204.128.146.0/24","start":"204.128.146.0","end":"204.128.146.255","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":"2026-10-14T00:12:34+00:00","page":"https://rirtracker.com/ip/204.128.146.0-204.128.146.255/#e-a6fb10b162d08028","report_page":"https://rirtracker.com/arin/reports/2024-11-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.128.146.0-204.128.146.255.json","observed":"204.128.146.0/24 allocated on 2024-11-11, reserved on 2024-11-12","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":"2025-01-10","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 allocated (dated 2011-02-23) on 2024-11-10 and reserved on 2024-11-12. 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 2025-01-10. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20241112.gz","retrieved_at":"2026-10-12T23:49:46+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 204.128.146.0/24 allocated on 2024-11-11, reserved on 2024-11-12"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20241110.gz","retrieved_at":"2026-10-12T23:49:41+00:00","summary":"ARIN delegated statistics 2024-11-10 (produced 2024-11-10T14:00:51+00:00), before the report: allocated (dated 2011-02-23)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20241112.gz","retrieved_at":"2026-10-12T23:49:46+00:00","summary":"ARIN delegated statistics 2024-11-12 (produced 2024-11-12T14:00:54+00:00), after the report: reserved"}]},{"event_id":"3047f82548a88c3b","registry":"ARIN","report_date":"2023-11-15","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"204.128.146.0/24","start":"204.128.146.0","end":"204.128.146.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Express-1, Inc.","recipient_organization":"RXO Corporate Solutions, LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:11+00:00","page":"https://rirtracker.com/ip/204.128.146.0-204.128.146.255/#e-3047f82548a88c3b","report_page":"https://rirtracker.com/arin/reports/2023-11-15/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.128.146.0-204.128.146.255.json","observed":"Merger/acquisition: Express-1, Inc. (ARIN) to RXO Corporate Solutions, LLC (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Express-1, Inc. (ARIN) to RXO Corporate Solutions, LLC (ARIN) on 2023-11-15 19:48 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.","evidence":[{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:20+00:00","summary":"Transfer log: MERGER_ACQUISITION on 2023-11-15 19:48 UTC, Express-1, Inc. (ARIN) to RXO Corporate Solutions, LLC (ARIN); resources moved: 204.128.146.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20231114.gz","retrieved_at":"2026-10-12T23:30:14+00:00","summary":"ARIN delegated statistics 2023-11-14 (produced 2023-11-14T14:00:33+00:00), before the report: allocated (dated 2011-02-23)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20231116.gz","retrieved_at":"2026-10-12T23:30:19+00:00","summary":"ARIN delegated statistics 2023-11-16 (produced 2023-11-16T14:00:34+00:00), after the report: allocated (dated 2011-02-23)"}]},{"event_id":"951c571999de3ef7","registry":"ARIN","report_date":"2011-02-23","source":"arin_issued","raw_action":"ADD","raw_line":"Add 204.128.146.0-204.128.146.255","resource_type":"ipv4","resource":"204.128.146.0/24","start":"204.128.146.0","end":"204.128.146.255","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 ARIN-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:51+00:00","page":"https://rirtracker.com/ip/204.128.146.0-204.128.146.255/#e-951c571999de3ef7","report_page":"https://rirtracker.com/arin/reports/2011-02-23/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.128.146.0-204.128.146.255.json","explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-02-22 and assigned (dated 2011-02-23) on 2011-02-24. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2011-February/000800.html","retrieved_at":"2026-10-12T18:36:59+00:00","summary":"ARIN-Issued report for 2011-02-23: \"Add 204.128.146.0-204.128.146.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20110222.gz","retrieved_at":"2026-10-12T19:16:46+00:00","summary":"ARIN delegated statistics 2011-02-22, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20110224.gz","retrieved_at":"2026-10-12T19:16:51+00:00","summary":"ARIN delegated statistics 2011-02-24, after the report: assigned (dated 2011-02-23)"}]}],"classification_history":{"a6fb10b162d08028":[{"raw_change_id":471894,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T06:10:31+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 allocated (dated 2011-02-23) on 2024-11-10 and reserved on 2024-11-12. 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 2025-01-10. This does not confirm availability."},{"raw_change_id":471894,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:23:12+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 allocated (dated 2011-02-23) on 2024-11-10 and reserved on 2024-11-12. 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 2025-01-10. This does not confirm availability."},{"raw_change_id":471894,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:07:18+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 allocated (dated 2011-02-23) on 2024-11-10 and reserved on 2024-11-12. 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 2025-01-10. This does not confirm availability."},{"raw_change_id":471894,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:12:34+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 allocated (dated 2011-02-23) on 2024-11-10 and reserved on 2024-11-12. 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 2025-01-10. This does not confirm availability."}],"3047f82548a88c3b":[{"raw_change_id":569550,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:11+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Express-1, Inc. (ARIN) to RXO Corporate Solutions, LLC (ARIN) on 2023-11-15 19:48 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it."}],"951c571999de3ef7":[{"raw_change_id":122745,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:13:24+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-02-22 and assigned (dated 2011-02-23) on 2011-02-24. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":122745,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:18+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-02-22 and assigned (dated 2011-02-23) on 2011-02-24. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":122745,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:52+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-02-22 and assigned (dated 2011-02-23) on 2011-02-24. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":122745,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:51+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-02-22 and assigned (dated 2011-02-23) on 2011-02-24. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2011-02-23)"}}