{"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":"104.166.123.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/104.166.123.0-104.166.123.255/","statistics_now":{"registry":"ARIN","status":"reserved"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[{"resource_type":"ipv4","start_key":"00000000000000000000000068a67b00","end_key":"00000000000000000000000068a67bff","captured_at":"2026-11-11T18:22:10+00:00","reason":"24h","authoritative_rir":"ARIN","rdap_url":"https://rdap.arin.net/registry/ip/104.166.123.0","error":"not registered (RDAP 404)"},{"resource_type":"ipv4","start_key":"00000000000000000000000068a67b00","end_key":"00000000000000000000000068a67bff","captured_at":"2026-11-10T18:21:58+00:00","reason":"first","authoritative_rir":"ARIN","rdap_url":"https://rdap.arin.net/registry/ip/104.166.123.0","error":"not registered (RDAP 404)"}],"transfers":[{"id":12374,"date":"2018-02-21T16:11:41Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Roya Hosting LLC","recipient_org":"OppoBox LLC","range":"104.166.96.0/19","log":"ARIN"}],"events":[{"event_id":"cfc30b259cde1ded","registry":"ARIN","report_date":"2026-11-09","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"104.166.123.0/24","start":"104.166.123.0","end":"104.166.123.255","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/104.166.123.0-104.166.123.255/#e-cfc30b259cde1ded","report_page":"https://rirtracker.com/arin/reports/2026-11-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/104.166.123.0-104.166.123.255.json","observed":"104.166.123.0/24 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 2022-01-07) 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: 104.166.123.0/24 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 2022-01-07)"},{"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":"c4fa2977dda83303","registry":"ARIN","report_date":"2022-01-07","source":"arin_issued","raw_action":"ADD","raw_line":"Add 104.166.123.0-104.166.123.255","resource_type":"ipv4","resource":"104.166.123.0/24","start":"104.166.123.0","end":"104.166.123.255","classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","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":"2026-10-13T23:53:18+00:00","page":"https://rirtracker.com/ip/104.166.123.0-104.166.123.255/#e-c4fa2977dda83303","report_page":"https://rirtracker.com/arin/reports/2022-01-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/104.166.123.0-104.166.123.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2022-01-06 and allocated (dated 2022-01-07) on 2022-01-08. The tracker saw this range released from hold on 2022-01-05 (104.166.123.0-104.166.123.255), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2022-January/004774.html","retrieved_at":"2026-10-12T18:41:36+00:00","summary":"ARIN-Issued report for 2022-01-07: \"Add 104.166.123.0-104.166.123.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220106.gz","retrieved_at":"2026-10-12T22:54:55+00:00","summary":"ARIN delegated statistics 2022-01-06 (produced 2022-01-06T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220108.gz","retrieved_at":"2026-10-12T22:55:00+00:00","summary":"ARIN delegated statistics 2022-01-08 (produced 2022-01-08T14:00:12+00:00), after the report: allocated (dated 2022-01-07)"}]},{"event_id":"635e68c5e5223d93","registry":"ARIN","report_date":"2022-01-07","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 104.166.123.0-104.166.123.255","resource_type":"ipv4","resource":"104.166.123.0/24","start":"104.166.123.0","end":"104.166.123.255","classification":"POOL_RECORD_CHANGE","classification_label":"Change to ARIN's own pool record","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Part of the issuance reported the same day","inventory_effect_code":"PAIRED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:18+00:00","page":"https://rirtracker.com/ip/104.166.123.0-104.166.123.255/#e-635e68c5e5223d93","report_page":"https://rirtracker.com/arin/reports/2022-01-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/104.166.123.0-104.166.123.255.json","explanation":"ARIN's statistics show it reserved on 2022-01-06 and allocated (dated 2022-01-07) on 2022-01-08. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.166.123.0-104.166.123.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2022-January/004774.html","retrieved_at":"2026-10-12T18:41:36+00:00","summary":"ARIN-Issued report for 2022-01-07: \"Remove 104.166.123.0-104.166.123.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220106.gz","retrieved_at":"2026-10-12T22:54:55+00:00","summary":"ARIN delegated statistics 2022-01-06 (produced 2022-01-06T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220108.gz","retrieved_at":"2026-10-12T22:55:00+00:00","summary":"ARIN delegated statistics 2022-01-08 (produced 2022-01-08T14:00:12+00:00), after the report: allocated (dated 2022-01-07)"}]},{"event_id":"30a46e7ea2cb37aa","registry":"ARIN","report_date":"2022-01-05","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 104.166.123.0-104.166.123.255","resource_type":"ipv4","resource":"104.166.123.0/24","start":"104.166.123.0","end":"104.166.123.255","classification":"NO_MATERIAL_CHANGE","classification_label":"No substantive resource change found","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:18+00:00","page":"https://rirtracker.com/ip/104.166.123.0-104.166.123.255/#e-30a46e7ea2cb37aa","report_page":"https://rirtracker.com/arin/reports/2022-01-05/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/104.166.123.0-104.166.123.255.json","explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved).","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2022-January/004772.html","retrieved_at":"2026-10-12T18:41:36+00:00","summary":"ARIN-Issued report for 2022-01-05: \"Remove 104.166.123.0-104.166.123.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220104.gz","retrieved_at":"2026-10-12T22:54:50+00:00","summary":"ARIN delegated statistics 2022-01-04 (produced 2022-01-04T14:00:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220106.gz","retrieved_at":"2026-10-12T22:54:55+00:00","summary":"ARIN delegated statistics 2022-01-06 (produced 2022-01-06T14:00:13+00:00), after the report: reserved"}]}],"classification_history":{"cfc30b259cde1ded":[{"raw_change_id":580138,"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 2022-01-07) 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."}],"c4fa2977dda83303":[{"raw_change_id":174754,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:54:45+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2022-01-06 and allocated (dated 2022-01-07) on 2022-01-08. The tracker saw this range released from hold on 2022-01-05 (104.166.123.0-104.166.123.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":174754,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:09+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2022-01-06 and allocated (dated 2022-01-07) on 2022-01-08. The tracker saw this range released from hold on 2022-01-05 (104.166.123.0-104.166.123.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":174754,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:57+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2022-01-06 and allocated (dated 2022-01-07) on 2022-01-08. The tracker saw this range released from hold on 2022-01-05 (104.166.123.0-104.166.123.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":174754,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:18+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2022-01-06 and allocated (dated 2022-01-07) on 2022-01-08. The tracker saw this range released from hold on 2022-01-05 (104.166.123.0-104.166.123.255), so it appears to have been issued again from ARIN's pool."}],"635e68c5e5223d93":[{"raw_change_id":174729,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:54:44+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2022-01-06 and allocated (dated 2022-01-07) on 2022-01-08. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.166.123.0-104.166.123.255. The issuance is explained on that line."},{"raw_change_id":174729,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:09+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2022-01-06 and allocated (dated 2022-01-07) on 2022-01-08. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.166.123.0-104.166.123.255. The issuance is explained on that line."},{"raw_change_id":174729,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:57+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2022-01-06 and allocated (dated 2022-01-07) on 2022-01-08. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.166.123.0-104.166.123.255. The issuance is explained on that line."},{"raw_change_id":174729,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:18+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2022-01-06 and allocated (dated 2022-01-07) on 2022-01-08. ARIN removed its own pool record for this range as part of issuing it: the same report adds 104.166.123.0-104.166.123.255. The issuance is explained on that line."}],"30a46e7ea2cb37aa":[{"raw_change_id":174617,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:54:40+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."},{"raw_change_id":174617,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:09+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."},{"raw_change_id":174617,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:57+00:00","current":0,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."},{"raw_change_id":174617,"classification_code":"NO_MATERIAL_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:18+00:00","current":1,"public_explanation":"ARIN-Issued lists it as \"Remove\", but ARIN's statistics show the same record before and after (reserved)."}]},"arin_statistics_now":{"status":"reserved"}}