{"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":"173.205.206.0/23","resource_type":"ipv4","page":"https://rirtracker.com/ip/173.205.206.0-173.205.207.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2020-01-22)"},"current_holder":{"rir":"ARIN","org":"Optoro, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":19865,"date":"2020-01-22T22:45:03Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Atlantic Metro Communications II, Inc.","recipient_org":"Optoro, Inc.","range":"173.205.206.0/23","log":"ARIN"},{"id":17421,"date":"2019-04-15T17:57:17Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"InfoRelay Online Systems, Inc.","recipient_org":"Atlantic Metro Communications II, Inc.","range":"173.205.128.0/17","log":"ARIN"}],"events":[{"event_id":"31cdc117df101d8c","registry":"ARIN","report_date":"2020-01-22","source":"arin_issued","raw_action":"ADD","raw_line":"Add 173.205.206.0-173.205.207.255","resource_type":"ipv4","resource":"173.205.206.0/23","start":"173.205.206.0","end":"173.205.207.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Atlantic Metro Communications II, Inc.","recipient_organization":"Optoro, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:43+00:00","page":"https://rirtracker.com/ip/173.205.206.0-173.205.207.255/#e-31cdc117df101d8c","report_page":"https://rirtracker.com/arin/reports/2020-01-22/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/173.205.206.0-173.205.207.255.json","explanation":"ARIN's transfer log records a transfer from Atlantic Metro Communications II, Inc. (ARIN) to Optoro, Inc. (ARIN) on 2020-01-22 22:45 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-January/004059.html","retrieved_at":"2026-10-12T18:40:45+00:00","summary":"ARIN-Issued report for 2020-01-22: \"Add 173.205.206.0-173.205.207.255\""},{"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 2020-01-22 22:45 UTC, Atlantic Metro Communications II, Inc. (ARIN) to Optoro, Inc. (ARIN); resources moved: 173.205.206.0/23"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200121.gz","retrieved_at":"2026-10-12T22:17:59+00:00","summary":"ARIN delegated statistics 2020-01-21 (produced 2020-01-21T15:00:09+00:00), before the report: allocated (dated 2009-11-20)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200124.gz","retrieved_at":"2026-10-12T22:18:07+00:00","summary":"ARIN delegated statistics 2020-01-24 (produced 2020-01-24T15:00:08+00:00), after the report: allocated (dated 2020-01-22)"}]}],"classification_history":{"31cdc117df101d8c":[{"raw_change_id":163494,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:47:02+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Atlantic Metro Communications II, Inc. (ARIN) to Optoro, Inc. (ARIN) on 2020-01-22 22:45 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":163494,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:42+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Atlantic Metro Communications II, Inc. (ARIN) to Optoro, Inc. (ARIN) on 2020-01-22 22:45 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":163494,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:26+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Atlantic Metro Communications II, Inc. (ARIN) to Optoro, Inc. (ARIN) on 2020-01-22 22:45 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":163494,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:43+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Atlantic Metro Communications II, Inc. (ARIN) to Optoro, Inc. (ARIN) on 2020-01-22 22:45 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 2020-01-22)"}}