{"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":"216.238.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/216.238.0.0-216.238.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2010-12-08), allocated (dated 2011-02-10), allocated (dated 2011-02-14), allocated (dated 2011-02-15), allocated (dated 2019-01-04), allocated (dated 2019-01-15), allocated (dated 2019-02-06), allocated (dated 2021-03-04), allocated (dated 2025-07-01), allocated (dated 2025-07-02), reserved"},"current_holder":{"rir":null,"org":null,"how":null},"rdap_snapshots":[],"transfers":[{"id":45598,"date":"2026-09-15T20:46:14Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Flypoint Broadband Ltd.","recipient_org":"Vianet Inc.","range":"216.238.32.0/22","log":"ARIN"},{"id":43661,"date":"2026-04-22T19:09:11Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"FirstLight Fiber, Inc.","recipient_org":"FirstLight Networks, LLC","range":"216.238.160.0/20","log":"ARIN"},{"id":34169,"date":"2024-01-19T22:30:36Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Corridor Communications, INC.","recipient_org":"Xplornet Communications Inc.","range":"216.238.224.0/20","log":"ARIN"},{"id":27026,"date":"2022-03-01T19:25:04Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"GoRack LLC","recipient_org":"SBA Edge, LLC","range":"216.238.144.0/20","log":"ARIN"},{"id":25860,"date":"2021-10-27T13:43:28Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"TelJet","recipient_org":"First Light Fiber","range":"216.238.160.0/20","log":"ARIN"},{"id":23976,"date":"2021-03-04T17:28:44Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"3SR LLC","recipient_org":"The Constant Company, LLC","range":"216.238.64.0/18","log":"ARIN"},{"id":21528,"date":"2020-09-24T16:34:08Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Razor Inc.","recipient_org":"3SR LLC","range":"216.238.64.0/18","log":"ARIN"},{"id":16938,"date":"2019-02-06T21:08:30Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"CKS Management","recipient_org":"Ebates Inc.","range":"216.238.188.0/22","log":"ARIN"},{"id":16811,"date":"2019-01-15T16:50:07Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"CKS Management","recipient_org":"Etheric Networks, Inc.","range":"216.238.184.0/22","log":"ARIN"},{"id":16739,"date":"2019-01-04T19:45:11Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"CKS Management","recipient_org":"Auburn Essential Services","range":"216.238.176.0/21","log":"ARIN"}],"events":[{"event_id":"74d8cd90bf85647e","registry":"ARIN","report_date":"2010-12-02","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 216.238.0.0-216.238.255.255","resource_type":"ipv4","resource":"216.238.0.0/16","start":"216.238.0.0","end":"216.238.255.255","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":"2026-10-13T23:50:50+00:00","page":"https://rirtracker.com/ip/216.238.0.0-216.238.255.255/#e-74d8cd90bf85647e","report_page":"https://rirtracker.com/arin/reports/2010-12-02/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.238.0.0-216.238.255.255.json","explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2010-12-01 and not issued on 2010-12-03. (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/2010-December/000717.html","retrieved_at":"2026-10-12T18:36:55+00:00","summary":"ARIN-Issued report for 2010-12-02: \"Remove 216.238.0.0-216.238.255.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2010/delegated-arin-20101201.gz","retrieved_at":"2026-10-12T19:13:27+00:00","summary":"ARIN delegated statistics 2010-12-01, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2010/delegated-arin-20101203.gz","retrieved_at":"2026-10-12T19:13:34+00:00","summary":"ARIN delegated statistics 2010-12-03, after the report: not issued"}]},{"event_id":"a375c53f56ff50ef","registry":"ARIN","report_date":"2010-03-08","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"216.238.0.0/16","start":"216.238.0.0","end":"216.238.255.255","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":"2026-10-13T23:55:39+00:00","page":"https://rirtracker.com/ip/216.238.0.0-216.238.255.255/#e-a375c53f56ff50ef","report_page":"https://rirtracker.com/arin/reports/2010-03-08/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.238.0.0-216.238.255.255.json","observed":"216.238.0.0/16 allocated on 2010-03-08, not listed on 2010-03-09","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":"2010-05-07","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 1999-09-08) on 2010-03-07 and not issued on 2010-03-09. (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 2010-05-07. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2010/delegated-arin-20100309.gz","retrieved_at":"2026-10-12T19:02:21+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 216.238.0.0/16 allocated on 2010-03-08, not listed on 2010-03-09"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2010/delegated-arin-20100307.gz","retrieved_at":"2026-10-12T19:02:17+00:00","summary":"ARIN delegated statistics 2010-03-07, before the report: allocated (dated 1999-09-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2010/delegated-arin-20100309.gz","retrieved_at":"2026-10-12T19:02:21+00:00","summary":"ARIN delegated statistics 2010-03-09, after the report: not issued"}]}],"classification_history":{"74d8cd90bf85647e":[{"raw_change_id":122184,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:12:56+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2010-12-01 and not issued on 2010-12-03. (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":122184,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:17+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2010-12-01 and not issued on 2010-12-03. (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":122184,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:51+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2010-12-01 and not issued on 2010-12-03. (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":122184,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:50+00:00","current":1,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2010-12-01 and not issued on 2010-12-03. (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."}],"a375c53f56ff50ef":[{"raw_change_id":215226,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:14:31+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 1999-09-08) on 2010-03-07 and not issued on 2010-03-09. (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 2010-05-07. This does not confirm availability."},{"raw_change_id":215226,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:09:01+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 1999-09-08) on 2010-03-07 and not issued on 2010-03-09. (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 2010-05-07. This does not confirm availability."},{"raw_change_id":215226,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:52:00+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 1999-09-08) on 2010-03-07 and not issued on 2010-03-09. (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 2010-05-07. This does not confirm availability."},{"raw_change_id":215226,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:55:39+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 1999-09-08) on 2010-03-07 and not issued on 2010-03-09. (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 2010-05-07. This does not confirm availability."}]},"arin_statistics_now":{"status":"allocated (dated 2010-12-08), allocated (dated 2011-02-10), allocated (dated 2011-02-14), allocated (dated 2011-02-15), allocated (dated 2019-01-04), allocated (dated 2019-01-15), allocated (dated 2019-02-06), allocated (dated 2021-03-04), allocated (dated 2025-07-01), allocated (dated 2025-07-02), reserved"}}