{"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":"147.160.167.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/147.160.167.0-147.160.167.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2019-06-03)"},"current_holder":{"rir":"ARIN","org":"Knowbe4, Inc","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":18089,"date":"2019-06-03T18:19:20Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Concurrent Technologies Corporation","recipient_org":"Knowbe4, Inc","range":"147.160.167.0/24","log":"ARIN"}],"events":[{"event_id":"15a5ace580db4353","registry":"ARIN","report_date":"2019-06-03","source":"arin_issued","raw_action":"ADD","raw_line":"Add 147.160.167.0-147.160.167.255","resource_type":"ipv4","resource":"147.160.167.0/24","start":"147.160.167.0","end":"147.160.167.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Concurrent Technologies Corporation","recipient_organization":"Knowbe4, Inc","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:31+00:00","page":"https://rirtracker.com/ip/147.160.167.0-147.160.167.255/#e-15a5ace580db4353","report_page":"https://rirtracker.com/arin/reports/2019-06-03/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/147.160.167.0-147.160.167.255.json","piece_of":{"resource":"147.160.0.0/16","page":"https://rirtracker.com/ip/147.160.0.0-147.160.255.255/"},"explanation":"ARIN's transfer log records a transfer from Concurrent Technologies Corporation (ARIN) to Knowbe4, Inc (ARIN) on 2019-06-03 18:19 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/2019-June/003827.html","retrieved_at":"2026-10-12T18:40:31+00:00","summary":"ARIN-Issued report for 2019-06-03: \"Add 147.160.167.0-147.160.167.255\""},{"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 2019-06-03 18:19 UTC, Concurrent Technologies Corporation (ARIN) to Knowbe4, Inc (ARIN); resources moved: 147.160.167.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190602.gz","retrieved_at":"2026-10-12T22:05:57+00:00","summary":"ARIN delegated statistics 2019-06-02 (produced 2019-06-02T05:00:17+00:00), before the report: allocated (dated 1991-04-29)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190604.gz","retrieved_at":"2026-10-12T22:06:02+00:00","summary":"ARIN delegated statistics 2019-06-04 (produced 2019-06-04T05:00:16+00:00), after the report: assigned (dated 2019-06-03)"}]}],"classification_history":{"15a5ace580db4353":[{"raw_change_id":159919,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:44:27+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Concurrent Technologies Corporation (ARIN) to Knowbe4, Inc (ARIN) on 2019-06-03 18:19 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":159919,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:33+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Concurrent Technologies Corporation (ARIN) to Knowbe4, Inc (ARIN) on 2019-06-03 18:19 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":159919,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:16+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Concurrent Technologies Corporation (ARIN) to Knowbe4, Inc (ARIN) on 2019-06-03 18:19 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":159919,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:31+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Concurrent Technologies Corporation (ARIN) to Knowbe4, Inc (ARIN) on 2019-06-03 18:19 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2019-06-03)"}}