{"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":"161.129.64.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/161.129.64.0-161.129.71.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2024-09-09)"},"current_holder":{"rir":"ARIN","org":"Interserver, Inc","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":36691,"date":"2024-09-09T13:09:04Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"QuadraNet Enterprises LLC","recipient_org":"Interserver, Inc","range":"161.129.64.0/21","log":"ARIN"},{"id":14331,"date":"2018-08-30T14:45:44Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"QuadraNet, Inc","recipient_org":"QuadraNet Enterprises LLC","range":"161.129.64.0/21","log":"ARIN"},{"id":14084,"date":"2018-08-07T11:37:20Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"BuffaloColo, LLC","recipient_org":"QuadraNet, Inc","range":"161.129.64.0/21","log":"ARIN"}],"events":[{"event_id":"52a4a459d8960742","registry":"ARIN","report_date":"2024-09-09","source":"arin_issued","raw_action":"ADD","raw_line":"Add 161.129.64.0-161.129.71.255","resource_type":"ipv4","resource":"161.129.64.0/21","start":"161.129.64.0","end":"161.129.71.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"QuadraNet Enterprises LLC","recipient_organization":"Interserver, Inc","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:11+00:00","page":"https://rirtracker.com/ip/161.129.64.0-161.129.71.255/#e-52a4a459d8960742","report_page":"https://rirtracker.com/arin/reports/2024-09-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.129.64.0-161.129.71.255.json","explanation":"ARIN's transfer log records a transfer from QuadraNet Enterprises LLC (ARIN) to Interserver, Inc (ARIN) on 2024-09-09 13:09 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/2024-September/005749.html","retrieved_at":"2026-10-12T18:42:44+00:00","summary":"ARIN-Issued report for 2024-09-09: \"Add 161.129.64.0-161.129.71.255\""},{"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 2024-09-09 13:09 UTC, QuadraNet Enterprises LLC (ARIN) to Interserver, Inc (ARIN); resources moved: 161.129.64.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240908.gz","retrieved_at":"2026-10-12T23:46:23+00:00","summary":"ARIN delegated statistics 2024-09-08 (produced 2024-09-08T13:00:53+00:00), before the report: allocated (dated 2018-03-29)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240910.gz","retrieved_at":"2026-10-12T23:46:28+00:00","summary":"ARIN delegated statistics 2024-09-10 (produced 2024-09-10T13:00:53+00:00), after the report: allocated (dated 2024-09-09)"}]},{"event_id":"5cd6d005b73705ab","registry":"ARIN","report_date":"2018-08-30","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"161.129.64.0/21","start":"161.129.64.0","end":"161.129.71.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"QuadraNet, Inc","recipient_organization":"QuadraNet Enterprises LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:38+00:00","page":"https://rirtracker.com/ip/161.129.64.0-161.129.71.255/#e-5cd6d005b73705ab","report_page":"https://rirtracker.com/arin/reports/2018-08-30/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.129.64.0-161.129.71.255.json","observed":"Merger/acquisition: QuadraNet, Inc (ARIN) to QuadraNet Enterprises LLC (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from QuadraNet, Inc (ARIN) to QuadraNet Enterprises LLC (ARIN) on 2018-08-30 14:45 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 2018-08-30 14:45 UTC, QuadraNet, Inc (ARIN) to QuadraNet Enterprises LLC (ARIN); resources moved: 161.129.64.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180829.gz","retrieved_at":"2026-10-12T21:51:38+00:00","summary":"ARIN delegated statistics 2018-08-29 (produced 2018-08-29T05:00:17+00:00), before the report: allocated (dated 2018-03-29)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180831.gz","retrieved_at":"2026-10-12T21:51:50+00:00","summary":"ARIN delegated statistics 2018-08-31 (produced 2018-08-31T05:00:15+00:00), after the report: allocated (dated 2018-03-29)"}]},{"event_id":"89a50d8bc57be0ab","registry":"ARIN","report_date":"2018-08-07","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"161.129.64.0/21","start":"161.129.64.0","end":"161.129.71.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"BuffaloColo, LLC","recipient_organization":"QuadraNet, Inc","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:37+00:00","page":"https://rirtracker.com/ip/161.129.64.0-161.129.71.255/#e-89a50d8bc57be0ab","report_page":"https://rirtracker.com/arin/reports/2018-08-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.129.64.0-161.129.71.255.json","observed":"Merger/acquisition: BuffaloColo, LLC (ARIN) to QuadraNet, Inc (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from BuffaloColo, LLC (ARIN) to QuadraNet, Inc (ARIN) on 2018-08-07 11:37 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 2018-08-07 11:37 UTC, BuffaloColo, LLC (ARIN) to QuadraNet, Inc (ARIN); resources moved: 161.129.64.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180806.gz","retrieved_at":"2026-10-12T21:50:33+00:00","summary":"ARIN delegated statistics 2018-08-06 (produced 2018-08-06T05:00:21+00:00), before the report: allocated (dated 2018-03-29)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180808.gz","retrieved_at":"2026-10-12T21:50:38+00:00","summary":"ARIN delegated statistics 2018-08-08 (produced 2018-08-08T05:00:22+00:00), after the report: allocated (dated 2018-03-29)"}]},{"event_id":"74cf5bb6a744b701","registry":"ARIN","report_date":"2018-03-29","source":"arin_issued","raw_action":"ADD","raw_line":"Add 161.129.64.0-161.129.71.255","resource_type":"ipv4","resource":"161.129.64.0/21","start":"161.129.64.0","end":"161.129.71.255","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":"2026-10-13T23:52:07+00:00","page":"https://rirtracker.com/ip/161.129.64.0-161.129.71.255/#e-74cf5bb6a744b701","report_page":"https://rirtracker.com/arin/reports/2018-03-29/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.129.64.0-161.129.71.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-03-28 and allocated (dated 2018-03-29) on 2018-03-30. The tracker saw this range removed from registration on 2017-04-11 (161.129.0.0/16), so it appears to have been issued again from ARIN's pool.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2018-March/003396.html","retrieved_at":"2026-10-12T18:39:59+00:00","summary":"ARIN-Issued report for 2018-03-29: \"Add 161.129.64.0-161.129.71.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180328.gz","retrieved_at":"2026-10-12T21:43:48+00:00","summary":"ARIN delegated statistics 2018-03-28 (produced 2018-03-28T05:11:27+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180330.gz","retrieved_at":"2026-10-12T21:44:00+00:00","summary":"ARIN delegated statistics 2018-03-30 (produced 2018-03-30T05:12:17+00:00), after the report: allocated (dated 2018-03-29)"}]},{"event_id":"ed46b039c3cd735c","registry":"ARIN","report_date":"2018-03-29","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 161.129.64.0-161.129.71.255","resource_type":"ipv4","resource":"161.129.64.0/21","start":"161.129.64.0","end":"161.129.71.255","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":"2026-10-13T23:52:07+00:00","page":"https://rirtracker.com/ip/161.129.64.0-161.129.71.255/#e-ed46b039c3cd735c","report_page":"https://rirtracker.com/arin/reports/2018-03-29/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.129.64.0-161.129.71.255.json","explanation":"ARIN's statistics show it reserved on 2018-03-28 and allocated (dated 2018-03-29) on 2018-03-30. ARIN removed its own pool record for this range as part of issuing it: the same report adds 161.129.64.0-161.129.71.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2018-March/003396.html","retrieved_at":"2026-10-12T18:39:59+00:00","summary":"ARIN-Issued report for 2018-03-29: \"Remove 161.129.64.0-161.129.71.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180328.gz","retrieved_at":"2026-10-12T21:43:48+00:00","summary":"ARIN delegated statistics 2018-03-28 (produced 2018-03-28T05:11:27+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180330.gz","retrieved_at":"2026-10-12T21:44:00+00:00","summary":"ARIN delegated statistics 2018-03-30 (produced 2018-03-30T05:12:17+00:00), after the report: allocated (dated 2018-03-29)"}]}],"classification_history":{"52a4a459d8960742":[{"raw_change_id":189125,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T04:03:15+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from QuadraNet Enterprises LLC (ARIN) to Interserver, Inc (ARIN) on 2024-09-09 13:09 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":189125,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:48+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from QuadraNet Enterprises LLC (ARIN) to Interserver, Inc (ARIN) on 2024-09-09 13:09 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":189125,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:40+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from QuadraNet Enterprises LLC (ARIN) to Interserver, Inc (ARIN) on 2024-09-09 13:09 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":189125,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:11+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from QuadraNet Enterprises LLC (ARIN) to Interserver, Inc (ARIN) on 2024-09-09 13:09 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"5cd6d005b73705ab":[{"raw_change_id":555596,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:38+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from QuadraNet, Inc (ARIN) to QuadraNet Enterprises LLC (ARIN) on 2018-08-30 14:45 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."}],"89a50d8bc57be0ab":[{"raw_change_id":555353,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:37+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from BuffaloColo, LLC (ARIN) to QuadraNet, Inc (ARIN) on 2018-08-07 11:37 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."}],"74cf5bb6a744b701":[{"raw_change_id":153886,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:40:52+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-03-28 and allocated (dated 2018-03-29) on 2018-03-30. The tracker saw this range removed from registration on 2017-04-11 (161.129.0.0/16), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":153886,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:15+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-03-28 and allocated (dated 2018-03-29) on 2018-03-30. The tracker saw this range removed from registration on 2017-04-11 (161.129.0.0/16), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":153886,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:56+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-03-28 and allocated (dated 2018-03-29) on 2018-03-30. The tracker saw this range removed from registration on 2017-04-11 (161.129.0.0/16), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":153886,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:07+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2018-03-28 and allocated (dated 2018-03-29) on 2018-03-30. The tracker saw this range removed from registration on 2017-04-11 (161.129.0.0/16), so it appears to have been issued again from ARIN's pool."}],"ed46b039c3cd735c":[{"raw_change_id":153867,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:40:52+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2018-03-28 and allocated (dated 2018-03-29) on 2018-03-30. ARIN removed its own pool record for this range as part of issuing it: the same report adds 161.129.64.0-161.129.71.255. The issuance is explained on that line."},{"raw_change_id":153867,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:15+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2018-03-28 and allocated (dated 2018-03-29) on 2018-03-30. ARIN removed its own pool record for this range as part of issuing it: the same report adds 161.129.64.0-161.129.71.255. The issuance is explained on that line."},{"raw_change_id":153867,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:56+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2018-03-28 and allocated (dated 2018-03-29) on 2018-03-30. ARIN removed its own pool record for this range as part of issuing it: the same report adds 161.129.64.0-161.129.71.255. The issuance is explained on that line."},{"raw_change_id":153867,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:07+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2018-03-28 and allocated (dated 2018-03-29) on 2018-03-30. ARIN removed its own pool record for this range as part of issuing it: the same report adds 161.129.64.0-161.129.71.255. The issuance is explained on that line."}]},"arin_statistics_now":{"status":"allocated (dated 2024-09-09)"}}