{"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":"140.235.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/140.235.0.0-140.235.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (81 records, dated 2024-10-03 to 2025-10-08)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics"},"rdap_snapshots":[],"transfers":[{"id":43139,"date":"2026-03-11T18:12:05Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Bridge Point Communication","recipient_org":"Slic Network Solutions, Inc","range":"140.235.28.0/22","log":"ARIN"},{"id":40471,"date":"2025-05-28T12:16:46Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Lambda Internet Exchange","recipient_org":"August Internet","range":"140.235.121.0/24","log":"ARIN"}],"events":[{"event_id":"4e72a58db72c7732","registry":"ARIN","report_date":"2024-10-03","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 140.235.0.0-140.235.255.255","resource_type":"ipv4","resource":"140.235.0.0/16","start":"140.235.0.0","end":"140.235.255.255","classification":"POOL_RECORD_CHANGE","classification_label":"Change to ARIN's own pool record","confidence":"OBSERVED_ONLY","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":"2026-10-13T23:54:12+00:00","page":"https://rirtracker.com/ip/140.235.0.0-140.235.255.255/#e-4e72a58db72c7732","report_page":"https://rirtracker.com/arin/reports/2024-10-03/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/140.235.0.0-140.235.255.255.json","explanation":"ARIN's statistics show it reserved on 2024-10-02 and allocated (dated 2024-10-03), reserved on 2024-10-04. ARIN removed its own pool record for this range as part of issuing it: the same report adds 140.235.4.0-140.235.7.255, 140.235.8.0-140.235.11.255, 140.235.24.0-140.235.27.255, 140.235.28.0-140.235.31.255 and 54 more. The issuance is explained on those lines. Another change to this range was reported the day before or after (2024-10-04: Remove 140.235.0.0-140.235.3.255; 2024-10-04: Remove 140.235.16.0-140.235.19.255; 2024-10-04: Remove 140.235.20.0-140.235.23.255), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2024-October/005773.html","retrieved_at":"2026-10-12T18:42:46+00:00","summary":"ARIN-Issued report for 2024-10-03: \"Remove 140.235.0.0-140.235.255.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20241002.gz","retrieved_at":"2026-10-12T23:47:32+00:00","summary":"ARIN delegated statistics 2024-10-02 (produced 2024-10-02T13:00:54+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20241004.gz","retrieved_at":"2026-10-12T23:47:47+00:00","summary":"ARIN delegated statistics 2024-10-04 (produced 2024-10-04T13:00:53+00:00), after the report: allocated (dated 2024-10-03), reserved"}]},{"event_id":"9906a87a4f11fe06","registry":"ARIN","report_date":"2011-10-19","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 140.235.0.0-140.235.255.255","resource_type":"ipv4","resource":"140.235.0.0/16","start":"140.235.0.0","end":"140.235.255.255","classification":"UNRESOLVED","classification_label":"Unresolved change","confidence":"OBSERVED_ONLY","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Inventory effect unknown","inventory_effect_code":"UNKNOWN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:56+00:00","page":"https://rirtracker.com/ip/140.235.0.0-140.235.255.255/#e-9906a87a4f11fe06","report_page":"https://rirtracker.com/arin/reports/2011-10-19/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/140.235.0.0-140.235.255.255.json","explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2011-10-18 and not issued on 2011-10-20. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2011-October/001042.html","retrieved_at":"2026-10-12T18:37:16+00:00","summary":"ARIN-Issued report for 2011-10-19: \"Remove 140.235.0.0-140.235.255.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20111018.gz","retrieved_at":"2026-10-12T19:26:33+00:00","summary":"ARIN delegated statistics 2011-10-18, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20111020.gz","retrieved_at":"2026-10-12T19:26:38+00:00","summary":"ARIN delegated statistics 2011-10-20, after the report: not issued"}]},{"event_id":"787095492da4dc5b","registry":"ARIN","report_date":"2011-04-18","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"140.235.0.0/16","start":"140.235.0.0","end":"140.235.255.255","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":"2026-10-13T23:56:26+00:00","page":"https://rirtracker.com/ip/140.235.0.0-140.235.255.255/#e-787095492da4dc5b","report_page":"https://rirtracker.com/arin/reports/2011-04-18/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/140.235.0.0-140.235.255.255.json","observed":"140.235.0.0/16 assigned on 2011-04-18, not listed on 2011-04-19","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":"2011-06-17","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 1991-03-05) on 2011-04-17 and not issued on 2011-04-19. (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 2011-06-17. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20110419.gz","retrieved_at":"2026-10-12T19:19:02+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 140.235.0.0/16 assigned on 2011-04-18, not listed on 2011-04-19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20110417.gz","retrieved_at":"2026-10-12T19:18:58+00:00","summary":"ARIN delegated statistics 2011-04-17, before the report: assigned (dated 1991-03-05)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20110419.gz","retrieved_at":"2026-10-12T19:19:02+00:00","summary":"ARIN delegated statistics 2011-04-19, after the report: not issued"}]}],"classification_history":{"4e72a58db72c7732":[{"raw_change_id":189492,"classification_code":"POOL_RECORD_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T04:03:27+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2024-10-02 and allocated (dated 2024-10-03), reserved on 2024-10-04. ARIN removed its own pool record for this range as part of issuing it: the same report adds 140.235.4.0-140.235.7.255, 140.235.8.0-140.235.11.255, 140.235.24.0-140.235.27.255, 140.235.28.0-140.235.31.255 and 54 more. The issuance is explained on those lines. Another change to this range was reported the day before or after (2024-10-04: Remove 140.235.0.0-140.235.3.255; 2024-10-04: Add 140.235.0.0-140.235.3.255; 2024-10-04: Remove 140.235.16.0-140.235.19.255), so the before-and-after statistics may include it."},{"raw_change_id":189492,"classification_code":"POOL_RECORD_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:49+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2024-10-02 and allocated (dated 2024-10-03), reserved on 2024-10-04. ARIN removed its own pool record for this range as part of issuing it: the same report adds 140.235.4.0-140.235.7.255, 140.235.8.0-140.235.11.255, 140.235.24.0-140.235.27.255, 140.235.28.0-140.235.31.255 and 54 more. The issuance is explained on those lines. Another change to this range was reported the day before or after (2024-10-04: Remove 140.235.0.0-140.235.3.255; 2024-10-04: Remove 140.235.16.0-140.235.19.255; 2024-10-04: Remove 140.235.20.0-140.235.23.255), so the before-and-after statistics may include it."},{"raw_change_id":189492,"classification_code":"POOL_RECORD_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:42+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2024-10-02 and allocated (dated 2024-10-03), reserved on 2024-10-04. ARIN removed its own pool record for this range as part of issuing it: the same report adds 140.235.4.0-140.235.7.255, 140.235.8.0-140.235.11.255, 140.235.24.0-140.235.27.255, 140.235.28.0-140.235.31.255 and 54 more. The issuance is explained on those lines. Another change to this range was reported the day before or after (2024-10-04: Remove 140.235.0.0-140.235.3.255; 2024-10-04: Remove 140.235.16.0-140.235.19.255; 2024-10-04: Remove 140.235.20.0-140.235.23.255), so the before-and-after statistics may include it."},{"raw_change_id":189492,"classification_code":"POOL_RECORD_CHANGE","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:12+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2024-10-02 and allocated (dated 2024-10-03), reserved on 2024-10-04. ARIN removed its own pool record for this range as part of issuing it: the same report adds 140.235.4.0-140.235.7.255, 140.235.8.0-140.235.11.255, 140.235.24.0-140.235.27.255, 140.235.28.0-140.235.31.255 and 54 more. The issuance is explained on those lines. Another change to this range was reported the day before or after (2024-10-04: Remove 140.235.0.0-140.235.3.255; 2024-10-04: Remove 140.235.16.0-140.235.19.255; 2024-10-04: Remove 140.235.20.0-140.235.23.255), so the before-and-after statistics may include it."}],"9906a87a4f11fe06":[{"raw_change_id":124756,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:15:20+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2011-10-18 and not issued on 2011-10-20. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed."},{"raw_change_id":124756,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:22+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2011-10-18 and not issued on 2011-10-20. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed."},{"raw_change_id":124756,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:56+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2011-10-18 and not issued on 2011-10-20. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed."},{"raw_change_id":124756,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:56+00:00","current":1,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2011-10-18 and not issued on 2011-10-20. (Until 2013-03-05, ARIN's statistics list only what's issued.) The registry's pool records from that time aren't public, so the tracker can't tell what was removed."}],"787095492da4dc5b":[{"raw_change_id":228433,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:19:45+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 1991-03-05) on 2011-04-17 and not issued on 2011-04-19. (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 2011-06-17. This does not confirm availability."},{"raw_change_id":228433,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:09:41+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 1991-03-05) on 2011-04-17 and not issued on 2011-04-19. (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 2011-06-17. This does not confirm availability."},{"raw_change_id":228433,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:52:45+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 1991-03-05) on 2011-04-17 and not issued on 2011-04-19. (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 2011-06-17. This does not confirm availability."},{"raw_change_id":228433,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:56:26+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 1991-03-05) on 2011-04-17 and not issued on 2011-04-19. (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 2011-06-17. This does not confirm availability."}]},"arin_statistics_now":{"status":"allocated (81 records, dated 2024-10-03 to 2025-10-08)"}}