{"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":"172.110.52.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/172.110.52.0-172.110.55.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2015-06-24)"},"current_holder":{"rir":"ARIN","org":"IQVIA Holdings Inc","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":21530,"date":"2020-09-24T16:46:04Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ADVANCED HEALTH MEDIA SERVICES, LLC","recipient_org":"IQVIA Holdings Inc","range":"172.110.52.0/22","log":"ARIN"}],"events":[{"event_id":"7ebc0c0ad40b81c0","registry":"ARIN","report_date":"2020-09-24","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"172.110.52.0/22","start":"172.110.52.0","end":"172.110.55.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"ADVANCED HEALTH MEDIA SERVICES, LLC","recipient_organization":"IQVIA Holdings Inc","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:51+00:00","page":"https://rirtracker.com/ip/172.110.52.0-172.110.55.255/#e-7ebc0c0ad40b81c0","report_page":"https://rirtracker.com/arin/reports/2020-09-24/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.110.52.0-172.110.55.255.json","observed":"Merger/acquisition: ADVANCED HEALTH MEDIA SERVICES, LLC (ARIN) to IQVIA Holdings Inc (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from ADVANCED HEALTH MEDIA SERVICES, LLC (ARIN) to IQVIA Holdings Inc (ARIN) on 2020-09-24 16:46 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 2020-09-24 16:46 UTC, ADVANCED HEALTH MEDIA SERVICES, LLC (ARIN) to IQVIA Holdings Inc (ARIN); resources moved: 172.110.52.0/22"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200923.gz","retrieved_at":"2026-10-12T22:30:39+00:00","summary":"ARIN delegated statistics 2020-09-23 (produced 2020-09-23T14:00:13+00:00), before the report: assigned (dated 2015-06-24)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200925.gz","retrieved_at":"2026-10-12T22:30:53+00:00","summary":"ARIN delegated statistics 2020-09-25 (produced 2020-09-25T14:00:13+00:00), after the report: assigned (dated 2015-06-24)"}]},{"event_id":"ed931669fffb7efa","registry":"ARIN","report_date":"2015-06-24","source":"arin_issued","raw_action":"ADD","raw_line":"Add 172.110.52.0-172.110.55.255","resource_type":"ipv4","resource":"172.110.52.0/22","start":"172.110.52.0","end":"172.110.55.255","classification":"APPARENT_NEW_ISSUANCE","classification_label":"Apparent new issuance","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/172.110.52.0-172.110.55.255/#e-ed931669fffb7efa","report_page":"https://rirtracker.com/arin/reports/2015-06-24/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.110.52.0-172.110.55.255.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2015-06-23 and assigned (dated 2015-06-24) on 2015-06-25. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2015-June/002386.html","retrieved_at":"2026-10-12T18:38:49+00:00","summary":"ARIN-Issued report for 2015-06-24: \"Add 172.110.52.0-172.110.55.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150623.gz","retrieved_at":"2026-10-12T20:54:31+00:00","summary":"ARIN delegated statistics 2015-06-23 (produced 2015-06-23T05:05:17+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150625.gz","retrieved_at":"2026-10-12T20:54:36+00:00","summary":"ARIN delegated statistics 2015-06-25 (produced 2015-06-25T05:04:58+00:00), after the report: assigned (dated 2015-06-24)"}]},{"event_id":"44c042380db108d3","registry":"ARIN","report_date":"2015-06-24","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 172.110.52.0-172.110.55.255","resource_type":"ipv4","resource":"172.110.52.0/22","start":"172.110.52.0","end":"172.110.55.255","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/172.110.52.0-172.110.55.255/#e-44c042380db108d3","report_page":"https://rirtracker.com/arin/reports/2015-06-24/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/172.110.52.0-172.110.55.255.json","explanation":"ARIN's statistics show it available on 2015-06-23 and assigned (dated 2015-06-24) on 2015-06-25. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.110.52.0-172.110.55.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2015-June/002386.html","retrieved_at":"2026-10-12T18:38:49+00:00","summary":"ARIN-Issued report for 2015-06-24: \"Remove 172.110.52.0-172.110.55.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150623.gz","retrieved_at":"2026-10-12T20:54:31+00:00","summary":"ARIN delegated statistics 2015-06-23 (produced 2015-06-23T05:05:17+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150625.gz","retrieved_at":"2026-10-12T20:54:36+00:00","summary":"ARIN delegated statistics 2015-06-25 (produced 2015-06-25T05:04:58+00:00), after the report: assigned (dated 2015-06-24)"}]}],"classification_history":{"7ebc0c0ad40b81c0":[{"raw_change_id":561011,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:51+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from ADVANCED HEALTH MEDIA SERVICES, LLC (ARIN) to IQVIA Holdings Inc (ARIN) on 2020-09-24 16:46 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."}],"ed931669fffb7efa":[{"raw_change_id":138013,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:31:58+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-06-23 and assigned (dated 2015-06-24) on 2015-06-25. The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":138013,"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 2015-06-23 and assigned (dated 2015-06-24) on 2015-06-25. The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":138013,"classification_code":"APPARENT_NEW_ISSUANCE","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 2015-06-23 and assigned (dated 2015-06-24) on 2015-06-25. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":138013,"classification_code":"APPARENT_NEW_ISSUANCE","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 2015-06-23 and assigned (dated 2015-06-24) on 2015-06-25. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}],"44c042380db108d3":[{"raw_change_id":137996,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:31:56+00:00","current":0,"public_explanation":"ARIN's statistics show it available on 2015-06-23 and assigned (dated 2015-06-24) on 2015-06-25. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.110.52.0-172.110.55.255. The issuance is explained on that line."},{"raw_change_id":137996,"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 2015-06-23 and assigned (dated 2015-06-24) on 2015-06-25. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.110.52.0-172.110.55.255. The issuance is explained on that line."},{"raw_change_id":137996,"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 2015-06-23 and assigned (dated 2015-06-24) on 2015-06-25. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.110.52.0-172.110.55.255. The issuance is explained on that line."},{"raw_change_id":137996,"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 2015-06-23 and assigned (dated 2015-06-24) on 2015-06-25. ARIN removed its own pool record for this range as part of issuing it: the same report adds 172.110.52.0-172.110.55.255. The issuance is explained on that line."}]},"arin_statistics_now":{"status":"allocated (dated 2015-06-24)"}}