{"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":"161.129.128.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/161.129.128.0-161.129.135.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2020-05-14)"},"current_holder":{"rir":"ARIN","org":"Westman Communications Group","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":20727,"date":"2020-05-14T21:53:44Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"FAL Networks","recipient_org":"Westman Communications Group","range":"161.129.128.0/21","log":"ARIN"}],"events":[{"event_id":"044fc19ba1e7d25b","registry":"ARIN","report_date":"2020-05-14","source":"arin_issued","raw_action":"ADD","raw_line":"Add 161.129.128.0-161.129.135.255","resource_type":"ipv4","resource":"161.129.128.0/21","start":"161.129.128.0","end":"161.129.135.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"FAL Networks","recipient_organization":"Westman Communications Group","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:50+00:00","page":"https://rirtracker.com/ip/161.129.128.0-161.129.135.255/#e-044fc19ba1e7d25b","report_page":"https://rirtracker.com/arin/reports/2020-05-14/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.129.128.0-161.129.135.255.json","explanation":"ARIN's transfer log records a transfer from FAL Networks (ARIN) to Westman Communications Group (ARIN) on 2020-05-14 21:53 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/2020-May/004171.html","retrieved_at":"2026-10-12T18:40:54+00:00","summary":"ARIN-Issued report for 2020-05-14: \"Add 161.129.128.0-161.129.135.255\""},{"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 2020-05-14 21:53 UTC, FAL Networks (ARIN) to Westman Communications Group (ARIN); resources moved: 161.129.128.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200513.gz","retrieved_at":"2026-10-12T22:24:01+00:00","summary":"ARIN delegated statistics 2020-05-13 (produced 2020-05-13T14:00:13+00:00), before the report: allocated (dated 2018-03-29)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200515.gz","retrieved_at":"2026-10-12T22:24:06+00:00","summary":"ARIN delegated statistics 2020-05-15 (produced 2020-05-15T14:00:14+00:00), after the report: allocated (dated 2020-05-14)"}]},{"event_id":"8f989061e46418fa","registry":"ARIN","report_date":"2018-03-29","source":"arin_issued","raw_action":"ADD","raw_line":"Add 161.129.128.0-161.129.135.255","resource_type":"ipv4","resource":"161.129.128.0/21","start":"161.129.128.0","end":"161.129.135.255","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/161.129.128.0-161.129.135.255/#e-8f989061e46418fa","report_page":"https://rirtracker.com/arin/reports/2018-03-29/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.129.128.0-161.129.135.255.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 161.129.128.0-161.129.135.255\""},{"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":{"044fc19ba1e7d25b":[{"raw_change_id":165403,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:48:09+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from FAL Networks (ARIN) to Westman Communications Group (ARIN) on 2020-05-14 21:53 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":165403,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:48+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from FAL Networks (ARIN) to Westman Communications Group (ARIN) on 2020-05-14 21:53 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":165403,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:32+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from FAL Networks (ARIN) to Westman Communications Group (ARIN) on 2020-05-14 21:53 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":165403,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:50+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from FAL Networks (ARIN) to Westman Communications Group (ARIN) on 2020-05-14 21:53 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"8f989061e46418fa":[{"raw_change_id":153890,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:40:53+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":153890,"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":153890,"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":153890,"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."}]},"arin_statistics_now":{"status":"allocated (dated 2020-05-14)"}}