{"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":"173.255.160.0/19","resource_type":"ipv4","page":"https://rirtracker.com/ip/173.255.160.0-173.255.191.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2011-11-14)"},"current_holder":{"rir":"ARIN","org":"Strong Technology, LLC.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":8182,"date":"2016-11-04T19:42:59Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Reliablehosting.com","recipient_org":"Strong Technology, LLC.","range":"173.255.160.0/19","log":"ARIN"}],"events":[{"event_id":"185de74234c22711","registry":"ARIN","report_date":"2016-11-04","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"173.255.160.0/19","start":"173.255.160.0","end":"173.255.191.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Reliablehosting.com","recipient_organization":"Strong Technology, LLC.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:27+00:00","page":"https://rirtracker.com/ip/173.255.160.0-173.255.191.255/#e-185de74234c22711","report_page":"https://rirtracker.com/arin/reports/2016-11-04/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/173.255.160.0-173.255.191.255.json","observed":"Merger/acquisition: Reliablehosting.com (ARIN) to Strong Technology, LLC. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Reliablehosting.com (ARIN) to Strong Technology, LLC. (ARIN) on 2016-11-04 19:42 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 2016-11-04 19:42 UTC, Reliablehosting.com (ARIN) to Strong Technology, LLC. (ARIN); resources moved: 173.255.160.0/19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20161103.gz","retrieved_at":"2026-10-12T21:18:48+00:00","summary":"ARIN delegated statistics 2016-11-03 (produced 2016-11-03T05:09:28+00:00), before the report: allocated (dated 2011-11-14)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20161105.gz","retrieved_at":"2026-10-12T21:18:53+00:00","summary":"ARIN delegated statistics 2016-11-05 (produced 2016-11-05T05:09:51+00:00), after the report: allocated (dated 2011-11-14)"}]},{"event_id":"3cb52671698b53c7","registry":"ARIN","report_date":"2011-11-14","source":"arin_issued","raw_action":"ADD","raw_line":"Add 173.255.160.0-173.255.191.255","resource_type":"ipv4","resource":"173.255.160.0/19","start":"173.255.160.0","end":"173.255.191.255","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":"2026-10-13T23:50:57+00:00","page":"https://rirtracker.com/ip/173.255.160.0-173.255.191.255/#e-3cb52671698b53c7","report_page":"https://rirtracker.com/arin/reports/2011-11-14/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/173.255.160.0-173.255.191.255.json","explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-11-13 and allocated (dated 2011-11-14) on 2011-11-15. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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/2011-November/001068.html","retrieved_at":"2026-10-12T18:37:18+00:00","summary":"ARIN-Issued report for 2011-11-14: \"Add 173.255.160.0-173.255.191.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20111113.gz","retrieved_at":"2026-10-12T19:27:40+00:00","summary":"ARIN delegated statistics 2011-11-13, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2011/delegated-arin-20111115.gz","retrieved_at":"2026-10-12T19:27:44+00:00","summary":"ARIN delegated statistics 2011-11-15, after the report: allocated (dated 2011-11-14)"}]}],"classification_history":{"185de74234c22711":[{"raw_change_id":551107,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:27+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Reliablehosting.com (ARIN) to Strong Technology, LLC. (ARIN) on 2016-11-04 19:42 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."}],"3cb52671698b53c7":[{"raw_change_id":124907,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:15:32+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-11-13 and allocated (dated 2011-11-14) on 2011-11-15. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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":124907,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:22+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-11-13 and allocated (dated 2011-11-14) on 2011-11-15. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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":124907,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:56+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-11-13 and allocated (dated 2011-11-14) on 2011-11-15. (Until 2013-03-05, ARIN's statistics list only what's issued.) 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":124907,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:57+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2011-11-13 and allocated (dated 2011-11-14) on 2011-11-15. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2011-11-14)"}}