{"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":"216.20.0.0/17","resource_type":"ipv4","page":"https://rirtracker.com/ip/216.20.0.0-216.20.127.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2024-09-25)"},"current_holder":{"rir":"ARIN","org":"Twilio SendGrid","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":36819,"date":"2024-09-25T11:03:21Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"CherryRoad Technologies, Inc.","recipient_org":"Twilio SendGrid","range":"216.20.0.0/17","log":"ARIN"},{"id":18678,"date":"2019-08-20T18:10:32Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Merrimack Education Center","recipient_org":"CherryRoad Technologies, Inc.","range":"216.20.0.0/17","log":"ARIN"}],"events":[{"event_id":"f4d266290eff4bf6","registry":"ARIN","report_date":"2024-09-25","source":"arin_issued","raw_action":"ADD","raw_line":"Add 216.20.0.0-216.20.127.255","resource_type":"ipv4","resource":"216.20.0.0/17","start":"216.20.0.0","end":"216.20.127.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"CherryRoad Technologies, Inc.","recipient_organization":"Twilio SendGrid","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:12+00:00","page":"https://rirtracker.com/ip/216.20.0.0-216.20.127.255/#e-f4d266290eff4bf6","report_page":"https://rirtracker.com/arin/reports/2024-09-25/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.20.0.0-216.20.127.255.json","explanation":"ARIN's transfer log records a transfer from CherryRoad Technologies, Inc. (ARIN) to Twilio SendGrid (ARIN) on 2024-09-25 11:03 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/2024-September/005765.html","retrieved_at":"2026-10-12T18:42:44+00:00","summary":"ARIN-Issued report for 2024-09-25: \"Add 216.20.0.0-216.20.127.255\""},{"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 2024-09-25 11:03 UTC, CherryRoad Technologies, Inc. (ARIN) to Twilio SendGrid (ARIN); resources moved: 216.20.0.0/17"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240924.gz","retrieved_at":"2026-10-12T23:47:13+00:00","summary":"ARIN delegated statistics 2024-09-24 (produced 2024-09-24T13:00:51+00:00), before the report: allocated (dated 1998-07-10)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240926.gz","retrieved_at":"2026-10-12T23:47:18+00:00","summary":"ARIN delegated statistics 2024-09-26 (produced 2024-09-26T13:00:52+00:00), after the report: allocated (dated 2024-09-25)"}]},{"event_id":"649b874f78124eb6","registry":"ARIN","report_date":"2019-08-20","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"216.20.0.0/17","start":"216.20.0.0","end":"216.20.127.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Merrimack Education Center","recipient_organization":"CherryRoad Technologies, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:46+00:00","page":"https://rirtracker.com/ip/216.20.0.0-216.20.127.255/#e-649b874f78124eb6","report_page":"https://rirtracker.com/arin/reports/2019-08-20/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.20.0.0-216.20.127.255.json","observed":"Merger/acquisition: Merrimack Education Center (ARIN) to CherryRoad Technologies, Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Merrimack Education Center (ARIN) to CherryRoad Technologies, Inc. (ARIN) on 2019-08-20 18:10 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 2019-08-20 18:10 UTC, Merrimack Education Center (ARIN) to CherryRoad Technologies, Inc. (ARIN); resources moved: 216.20.0.0/17"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190819.gz","retrieved_at":"2026-10-12T22:09:53+00:00","summary":"ARIN delegated statistics 2019-08-19 (produced 2019-08-19T14:00:13+00:00), before the report: allocated (dated 1998-07-10)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20190821.gz","retrieved_at":"2026-10-12T22:09:58+00:00","summary":"ARIN delegated statistics 2019-08-21 (produced 2019-08-21T14:00:13+00:00), after the report: allocated (dated 1998-07-10)"}]}],"classification_history":{"f4d266290eff4bf6":[{"raw_change_id":189344,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T04:03:23+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from CherryRoad Technologies, Inc. (ARIN) to Twilio SendGrid (ARIN) on 2024-09-25 11:03 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":189344,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:49+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from CherryRoad Technologies, Inc. (ARIN) to Twilio SendGrid (ARIN) on 2024-09-25 11:03 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":189344,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:41+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from CherryRoad Technologies, Inc. (ARIN) to Twilio SendGrid (ARIN) on 2024-09-25 11:03 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":189344,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:12+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from CherryRoad Technologies, Inc. (ARIN) to Twilio SendGrid (ARIN) on 2024-09-25 11:03 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"649b874f78124eb6":[{"raw_change_id":559210,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:46+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Merrimack Education Center (ARIN) to CherryRoad Technologies, Inc. (ARIN) on 2019-08-20 18:10 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."}]},"arin_statistics_now":{"status":"allocated (dated 2024-09-25)"}}