{"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":"144.86.178.0/23","resource_type":"ipv4","page":"https://rirtracker.com/ip/144.86.178.0-144.86.179.255/","statistics_now":{"registry":"ARIN","status":"reserved"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[{"resource_type":"ipv4","start_key":"0000000000000000000000009056b200","end_key":"0000000000000000000000009056b3ff","captured_at":"2026-11-11T18:22:13+00:00","reason":"24h","authoritative_rir":"ARIN","rdap_url":"https://rdap.arin.net/registry/ip/144.86.178.0","error":"not registered (RDAP 404)"},{"resource_type":"ipv4","start_key":"0000000000000000000000009056b200","end_key":"0000000000000000000000009056b3ff","captured_at":"2026-11-10T18:22:01+00:00","reason":"first","authoritative_rir":"ARIN","rdap_url":"https://rdap.arin.net/registry/ip/144.86.178.0","error":"not registered (RDAP 404)"}],"transfers":[{"id":21150,"date":"2020-07-27T18:19:55Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"MTI Technology LLC","recipient_org":"General Dynamics Mission Systems - Canada","range":"144.86.178.0/23","log":"ARIN"},{"id":16645,"date":"2018-12-13T18:10:57Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"MTI Technology Corporation","recipient_org":"MTI Technology LLC","range":"144.86.0.0/16","log":"ARIN"}],"events":[{"event_id":"85259b529732e23f","registry":"ARIN","report_date":"2026-11-09","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"144.86.178.0/23","start":"144.86.178.0","end":"144.86.179.255","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":true,"classifier_version":"1.4.0","classified_at":"2026-11-10T18:27:02+00:00","page":"https://rirtracker.com/ip/144.86.178.0-144.86.179.255/#e-85259b529732e23f","report_page":"https://rirtracker.com/arin/reports/2026-11-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/144.86.178.0-144.86.179.255.json","observed":"144.86.178.0/23 allocated on 2026-11-09, reserved on 2026-11-10","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":"2027-01-08","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 2020-07-27) on 2026-11-08 and reserved on 2026-11-10. 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 2027-01-08. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261110","retrieved_at":"2026-11-10T18:17:13+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 144.86.178.0/23 allocated on 2026-11-09, reserved on 2026-11-10"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261108","retrieved_at":"2026-11-08T18:17:14+00:00","summary":"ARIN delegated statistics 2026-11-08 (produced 2026-11-08T14:00:21+00:00), before the report: allocated (dated 2020-07-27)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261110","retrieved_at":"2026-11-10T18:17:13+00:00","summary":"ARIN delegated statistics 2026-11-10 (produced 2026-11-10T14:00:21+00:00), after the report: reserved"}]},{"event_id":"6653c4c52030bcf5","registry":"ARIN","report_date":"2020-07-27","source":"arin_issued","raw_action":"ADD","raw_line":"Add 144.86.178.0-144.86.179.255","resource_type":"ipv4","resource":"144.86.178.0/23","start":"144.86.178.0","end":"144.86.179.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"MTI Technology LLC","recipient_organization":"General Dynamics Mission Systems - Canada","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:54+00:00","page":"https://rirtracker.com/ip/144.86.178.0-144.86.179.255/#e-6653c4c52030bcf5","report_page":"https://rirtracker.com/arin/reports/2020-07-27/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/144.86.178.0-144.86.179.255.json","explanation":"ARIN's transfer log records a transfer from MTI Technology LLC (ARIN) to General Dynamics Mission Systems - Canada (ARIN) on 2020-07-27 18:19 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/2020-July/004245.html","retrieved_at":"2026-10-12T18:40:58+00:00","summary":"ARIN-Issued report for 2020-07-27: \"Add 144.86.178.0-144.86.179.255\""},{"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 2020-07-27 18:19 UTC, MTI Technology LLC (ARIN) to General Dynamics Mission Systems - Canada (ARIN); resources moved: 144.86.178.0/23"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200726.gz","retrieved_at":"2026-10-12T22:27:42+00:00","summary":"ARIN delegated statistics 2020-07-26 (produced 2020-07-26T14:00:13+00:00), before the report: allocated (dated 1990-11-20)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200728.gz","retrieved_at":"2026-10-12T22:27:46+00:00","summary":"ARIN delegated statistics 2020-07-28 (produced 2020-07-28T14:00:12+00:00), after the report: assigned (dated 2020-07-27)"}]}],"classification_history":{"85259b529732e23f":[{"raw_change_id":580141,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-11-10T18:27:02+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 2020-07-27) on 2026-11-08 and reserved on 2026-11-10. 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 2027-01-08. This does not confirm availability."}],"6653c4c52030bcf5":[{"raw_change_id":166712,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:49:08+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from MTI Technology LLC (ARIN) to General Dynamics Mission Systems - Canada (ARIN) on 2020-07-27 18:19 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":166712,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:51+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from MTI Technology LLC (ARIN) to General Dynamics Mission Systems - Canada (ARIN) on 2020-07-27 18:19 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":166712,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:36+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from MTI Technology LLC (ARIN) to General Dynamics Mission Systems - Canada (ARIN) on 2020-07-27 18:19 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":166712,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:54+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from MTI Technology LLC (ARIN) to General Dynamics Mission Systems - Canada (ARIN) on 2020-07-27 18:19 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}]},"arin_statistics_now":{"status":"reserved"}}