{"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":"205.207.148.0/23","resource_type":"ipv4","page":"https://rirtracker.com/ip/205.207.148.0-205.207.149.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2015-06-05)"},"current_holder":{"rir":"ARIN","org":"Montana Internet Corporation","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":41220,"date":"2025-09-05T17:20:32Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Treasure State Internet","recipient_org":"Montana Internet Corporation","range":"205.207.148.0/23","log":"ARIN"}],"events":[{"event_id":"7197d3340dcf5556","registry":"ARIN","report_date":"2025-09-05","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"205.207.148.0/23","start":"205.207.148.0","end":"205.207.149.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Treasure State Internet","recipient_organization":"Montana Internet Corporation","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:23+00:00","page":"https://rirtracker.com/ip/205.207.148.0-205.207.149.255/#e-7197d3340dcf5556","report_page":"https://rirtracker.com/arin/reports/2025-09-05/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/205.207.148.0-205.207.149.255.json","observed":"Merger/acquisition: Treasure State Internet (ARIN) to Montana Internet Corporation (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Treasure State Internet (ARIN) to Montana Internet Corporation (ARIN) on 2025-09-05 17:20 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 2025-09-05 17:20 UTC, Treasure State Internet (ARIN) to Montana Internet Corporation (ARIN); resources moved: 205.207.148.0/23"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250904.gz","retrieved_at":"2026-10-13T00:06:06+00:00","summary":"ARIN delegated statistics 2025-09-04 (produced 2025-09-04T13:00:50+00:00), before the report: allocated (dated 2015-06-05)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250906.gz","retrieved_at":"2026-10-13T00:06:23+00:00","summary":"ARIN delegated statistics 2025-09-06 (produced 2025-09-06T13:00:50+00:00), after the report: allocated (dated 2015-06-05)"}]},{"event_id":"53834d4bfab5f111","registry":"ARIN","report_date":"2015-06-05","source":"arin_issued","raw_action":"ADD","raw_line":"Add 205.207.148.0-205.207.149.255","resource_type":"ipv4","resource":"205.207.148.0/23","start":"205.207.148.0","end":"205.207.149.255","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":"2026-10-13T23:51:24+00:00","page":"https://rirtracker.com/ip/205.207.148.0-205.207.149.255/#e-53834d4bfab5f111","report_page":"https://rirtracker.com/arin/reports/2015-06-05/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/205.207.148.0-205.207.149.255.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2015-06-04 and allocated (dated 2015-06-05) on 2015-06-06. The tracker saw this range released from hold on 2012-06-26 (205.207.148.0-205.207.149.255), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2015-June/002367.html","retrieved_at":"2026-10-12T18:38:49+00:00","summary":"ARIN-Issued report for 2015-06-05: \"Add 205.207.148.0-205.207.149.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150604.gz","retrieved_at":"2026-10-12T20:53:37+00:00","summary":"ARIN delegated statistics 2015-06-04 (produced 2015-06-04T05:04:35+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150606.gz","retrieved_at":"2026-10-12T20:53:42+00:00","summary":"ARIN delegated statistics 2015-06-06 (produced 2015-06-06T05:04:30+00:00), after the report: allocated (dated 2015-06-05)"}]},{"event_id":"4246d46d83396124","registry":"ARIN","report_date":"2015-06-05","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 205.207.148.0-205.207.149.255","resource_type":"ipv4","resource":"205.207.148.0/23","start":"205.207.148.0","end":"205.207.149.255","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":"2026-10-13T23:51:24+00:00","page":"https://rirtracker.com/ip/205.207.148.0-205.207.149.255/#e-4246d46d83396124","report_page":"https://rirtracker.com/arin/reports/2015-06-05/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/205.207.148.0-205.207.149.255.json","explanation":"ARIN's statistics show it available on 2015-06-04 and allocated (dated 2015-06-05) on 2015-06-06. ARIN removed its own pool record for this range as part of issuing it: the same report adds 205.207.148.0-205.207.149.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2015-June/002367.html","retrieved_at":"2026-10-12T18:38:49+00:00","summary":"ARIN-Issued report for 2015-06-05: \"Remove 205.207.148.0-205.207.149.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150604.gz","retrieved_at":"2026-10-12T20:53:37+00:00","summary":"ARIN delegated statistics 2015-06-04 (produced 2015-06-04T05:04:35+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150606.gz","retrieved_at":"2026-10-12T20:53:42+00:00","summary":"ARIN delegated statistics 2015-06-06 (produced 2015-06-06T05:04:30+00:00), after the report: allocated (dated 2015-06-05)"}]},{"event_id":"92edf1aec17353da","registry":"ARIN","report_date":"2012-06-26","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 205.207.148.0-205.207.149.255","resource_type":"ipv4","resource":"205.207.148.0/23","start":"205.207.148.0","end":"205.207.149.255","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":"2026-10-13T23:51:00+00:00","page":"https://rirtracker.com/ip/205.207.148.0-205.207.149.255/#e-92edf1aec17353da","report_page":"https://rirtracker.com/arin/reports/2012-06-26/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/205.207.148.0-205.207.149.255.json","explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2012-06-25 and not issued on 2012-06-27. (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/2012-June/001293.html","retrieved_at":"2026-10-12T18:37:33+00:00","summary":"ARIN-Issued report for 2012-06-26: \"Remove 205.207.148.0-205.207.149.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120625.gz","retrieved_at":"2026-10-12T19:45:04+00:00","summary":"ARIN delegated statistics 2012-06-25, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120627.gz","retrieved_at":"2026-10-12T19:45:08+00:00","summary":"ARIN delegated statistics 2012-06-27, after the report: not issued"}]},{"event_id":"6067994305530513","registry":"ARIN","report_date":"2010-12-07","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"205.207.148.0/23","start":"205.207.148.0","end":"205.207.149.255","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":"2026-10-13T23:56:11+00:00","page":"https://rirtracker.com/ip/205.207.148.0-205.207.149.255/#e-6067994305530513","report_page":"https://rirtracker.com/arin/reports/2010-12-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/205.207.148.0-205.207.149.255.json","observed":"205.207.148.0/23 assigned on 2010-12-07, not listed on 2010-12-08","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":"2011-02-05","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 1995-04-08) on 2010-12-06 and not issued on 2010-12-08. (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 2011-02-05. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2010/delegated-arin-20101208.gz","retrieved_at":"2026-10-12T19:13:46+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 205.207.148.0/23 assigned on 2010-12-07, not listed on 2010-12-08"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2010/delegated-arin-20101206.gz","retrieved_at":"2026-10-12T19:13:41+00:00","summary":"ARIN delegated statistics 2010-12-06, before the report: assigned (dated 1995-04-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2010/delegated-arin-20101208.gz","retrieved_at":"2026-10-12T19:13:46+00:00","summary":"ARIN delegated statistics 2010-12-08, after the report: not issued"}]}],"classification_history":{"7197d3340dcf5556":[{"raw_change_id":574229,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:23+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Treasure State Internet (ARIN) to Montana Internet Corporation (ARIN) on 2025-09-05 17:20 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."}],"53834d4bfab5f111":[{"raw_change_id":137746,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:31:36+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-06-04 and allocated (dated 2015-06-05) on 2015-06-06. The tracker saw this range released from hold on 2012-06-26 (205.207.148.0-205.207.149.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":137746,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:43+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-06-04 and allocated (dated 2015-06-05) on 2015-06-06. The tracker saw this range released from hold on 2012-06-26 (205.207.148.0-205.207.149.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":137746,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:20+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-06-04 and allocated (dated 2015-06-05) on 2015-06-06. The tracker saw this range released from hold on 2012-06-26 (205.207.148.0-205.207.149.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":137746,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:24+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-06-04 and allocated (dated 2015-06-05) on 2015-06-06. The tracker saw this range released from hold on 2012-06-26 (205.207.148.0-205.207.149.255), so it appears to have been issued again from ARIN's pool."}],"4246d46d83396124":[{"raw_change_id":137732,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:31:35+00:00","current":0,"public_explanation":"ARIN's statistics show it available on 2015-06-04 and allocated (dated 2015-06-05) on 2015-06-06. ARIN removed its own pool record for this range as part of issuing it: the same report adds 205.207.148.0-205.207.149.255. The issuance is explained on that line."},{"raw_change_id":137732,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:43+00:00","current":0,"public_explanation":"ARIN's statistics show it available on 2015-06-04 and allocated (dated 2015-06-05) on 2015-06-06. ARIN removed its own pool record for this range as part of issuing it: the same report adds 205.207.148.0-205.207.149.255. The issuance is explained on that line."},{"raw_change_id":137732,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:20+00:00","current":0,"public_explanation":"ARIN's statistics show it available on 2015-06-04 and allocated (dated 2015-06-05) on 2015-06-06. ARIN removed its own pool record for this range as part of issuing it: the same report adds 205.207.148.0-205.207.149.255. The issuance is explained on that line."},{"raw_change_id":137732,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:24+00:00","current":1,"public_explanation":"ARIN's statistics show it available on 2015-06-04 and allocated (dated 2015-06-05) on 2015-06-06. ARIN removed its own pool record for this range as part of issuing it: the same report adds 205.207.148.0-205.207.149.255. The issuance is explained on that line."}],"92edf1aec17353da":[{"raw_change_id":126492,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:17:34+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2012-06-25 and not issued on 2012-06-27. (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":126492,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:25+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2012-06-25 and not issued on 2012-06-27. (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":126492,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:59+00:00","current":0,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2012-06-25 and not issued on 2012-06-27. (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":126492,"classification_code":"UNRESOLVED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:00+00:00","current":1,"public_explanation":"ARIN-Issued says \"Remove\", but ARIN's statistics show it not issued on 2012-06-25 and not issued on 2012-06-27. (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."}],"6067994305530513":[{"raw_change_id":224080,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:18:10+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 1995-04-08) on 2010-12-06 and not issued on 2010-12-08. (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 2011-02-05. This does not confirm availability."},{"raw_change_id":224080,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:09:28+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 1995-04-08) on 2010-12-06 and not issued on 2010-12-08. (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 2011-02-05. This does not confirm availability."},{"raw_change_id":224080,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:52:30+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 1995-04-08) on 2010-12-06 and not issued on 2010-12-08. (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 2011-02-05. This does not confirm availability."},{"raw_change_id":224080,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:56:11+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 1995-04-08) on 2010-12-06 and not issued on 2010-12-08. (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 2011-02-05. This does not confirm availability."}]},"arin_statistics_now":{"status":"allocated (dated 2015-06-05)"}}