{"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":"146.88.192.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/146.88.192.0-146.88.195.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2025-12-23), allocated (dated 2025-12-30)"},"current_holder":{"rir":"ARIN","org":"U.S. Marshals Service in accordance with the Final Order of Forfeiture","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":42484,"date":"2025-12-30T16:40:09Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"DOJ-USMS","recipient_org":"Hal 9000 LLC","range":"146.88.194.0/23","log":"ARIN"},{"id":42445,"date":"2025-12-23T16:30:43Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"DOJ-USMS","recipient_org":"THUNDERBOX INC","range":"146.88.192.0/23","log":"ARIN"},{"id":35461,"date":"2024-05-08T22:10:30Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Micfo, LLC.","recipient_org":"U.S. Marshals Service in accordance with the Final Order of Forfeiture","range":"146.88.192.0/22","log":"ARIN"},{"id":5877,"date":"2015-08-07T17:41:04Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"National Radio Astronomy Observatory","recipient_org":"Micfo, LLC.","range":"146.88.192.0/22","log":"ARIN"}],"events":[{"event_id":"a6fe92f5c017fb8e","registry":"ARIN","report_date":"2024-05-08","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"146.88.192.0/22","start":"146.88.192.0","end":"146.88.195.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Micfo, LLC.","recipient_organization":"U.S. Marshals Service in accordance with the Final Order of Forfeiture","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:14+00:00","page":"https://rirtracker.com/ip/146.88.192.0-146.88.195.255/#e-a6fe92f5c017fb8e","report_page":"https://rirtracker.com/arin/reports/2024-05-08/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/146.88.192.0-146.88.195.255.json","observed":"Merger/acquisition: Micfo, LLC. (ARIN) to U.S. Marshals Service in accordance with the Final Order of Forfeiture (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Micfo, LLC. (ARIN) to U.S. Marshals Service in accordance with the Final Order of Forfeiture (ARIN) on 2024-05-08 22:10 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 2024-05-08 22:10 UTC, Micfo, LLC. (ARIN) to U.S. Marshals Service in accordance with the Final Order of Forfeiture (ARIN); resources moved: 146.88.192.0/22"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240507.gz","retrieved_at":"2026-10-12T23:39:40+00:00","summary":"ARIN delegated statistics 2024-05-07 (produced 2024-05-07T13:00:50+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240509.gz","retrieved_at":"2026-10-12T23:39:44+00:00","summary":"ARIN delegated statistics 2024-05-09 (produced 2024-05-09T13:00:47+00:00), after the report: allocated (dated 2015-08-07)"}]},{"event_id":"5d3f892c38352033","registry":"ARIN","report_date":"2021-11-23","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"146.88.192.0/22","start":"146.88.192.0","end":"146.88.195.255","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":"2026-10-14T00:08:45+00:00","page":"https://rirtracker.com/ip/146.88.192.0-146.88.195.255/#e-5d3f892c38352033","report_page":"https://rirtracker.com/arin/reports/2021-11-23/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/146.88.192.0-146.88.195.255.json","observed":"146.88.192.0/22 allocated on 2021-11-23, reserved on 2021-11-24","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":"2022-01-22","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 allocated (dated 2015-08-07) on 2021-11-22 and reserved on 2021-11-24. 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 2022-01-22. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211124.gz","retrieved_at":"2026-10-12T22:52:41+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 146.88.192.0/22 allocated on 2021-11-23, reserved on 2021-11-24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211122.gz","retrieved_at":"2026-10-12T22:52:36+00:00","summary":"ARIN delegated statistics 2021-11-22 (produced 2021-11-22T14:00:13+00:00), before the report: allocated (dated 2015-08-07)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211124.gz","retrieved_at":"2026-10-12T22:52:41+00:00","summary":"ARIN delegated statistics 2021-11-24 (produced 2021-11-24T14:00:13+00:00), after the report: reserved"}]},{"event_id":"bf4a97f850fbf8ea","registry":"ARIN","report_date":"2015-08-07","source":"arin_issued","raw_action":"ADD","raw_line":"Add 146.88.192.0-146.88.195.255","resource_type":"ipv4","resource":"146.88.192.0/22","start":"146.88.192.0","end":"146.88.195.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"National Radio Astronomy Observatory","recipient_organization":"Micfo, LLC.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:27+00:00","page":"https://rirtracker.com/ip/146.88.192.0-146.88.195.255/#e-bf4a97f850fbf8ea","report_page":"https://rirtracker.com/arin/reports/2015-08-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/146.88.192.0-146.88.195.255.json","piece_of":{"resource":"146.88.0.0/16","page":"https://rirtracker.com/ip/146.88.0.0-146.88.255.255/"},"explanation":"ARIN's transfer log records a transfer from National Radio Astronomy Observatory (ARIN) to Micfo, LLC. (ARIN) on 2015-08-07 17:41 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2015-August/002430.html","retrieved_at":"2026-10-12T18:38:54+00:00","summary":"ARIN-Issued report for 2015-08-07: \"Add 146.88.192.0-146.88.195.255\""},{"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: RESOURCE_TRANSFER on 2015-08-07 17:41 UTC, National Radio Astronomy Observatory (ARIN) to Micfo, LLC. (ARIN); resources moved: 146.88.192.0/22"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150806.gz","retrieved_at":"2026-10-12T20:56:38+00:00","summary":"ARIN delegated statistics 2015-08-06 (produced 2015-08-06T05:05:29+00:00), before the report: assigned (dated 1991-01-28)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150808.gz","retrieved_at":"2026-10-12T20:56:49+00:00","summary":"ARIN delegated statistics 2015-08-08 (produced 2015-08-08T05:05:30+00:00), after the report: allocated (dated 2015-08-07)"}]}],"classification_history":{"a6fe92f5c017fb8e":[{"raw_change_id":570837,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:14+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Micfo, LLC. (ARIN) to U.S. Marshals Service in accordance with the Final Order of Forfeiture (ARIN) on 2024-05-08 22:10 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."}],"5d3f892c38352033":[{"raw_change_id":420774,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:48:22+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 2015-08-07) on 2021-11-22 and reserved on 2021-11-24. 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 2022-01-22. This does not confirm availability."},{"raw_change_id":420774,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:20:07+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 2015-08-07) on 2021-11-22 and reserved on 2021-11-24. 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 2022-01-22. This does not confirm availability."},{"raw_change_id":420774,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:03:59+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 2015-08-07) on 2021-11-22 and reserved on 2021-11-24. 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 2022-01-22. This does not confirm availability."},{"raw_change_id":420774,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:08:45+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 2015-08-07) on 2021-11-22 and reserved on 2021-11-24. 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 2022-01-22. This does not confirm availability."}],"bf4a97f850fbf8ea":[{"raw_change_id":139002,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:33:14+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from National Radio Astronomy Observatory (ARIN) to Micfo, LLC. (ARIN) on 2015-08-07 17:41 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":139002,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:45+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from National Radio Astronomy Observatory (ARIN) to Micfo, LLC. (ARIN) on 2015-08-07 17:41 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":139002,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:22+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from National Radio Astronomy Observatory (ARIN) to Micfo, LLC. (ARIN) on 2015-08-07 17:41 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":139002,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:27+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from National Radio Astronomy Observatory (ARIN) to Micfo, LLC. (ARIN) on 2015-08-07 17:41 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2025-12-23), allocated (dated 2025-12-30)"}}