{"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":"216.181.120.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/216.181.120.0-216.181.120.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2026-10-21)"},"current_holder":{"rir":"ARIN","org":"Censys, Inc.","handle":"CENSY","how":"RDAP, looked up 2026-10-29 18:49 UTC"},"rdap_snapshots":[{"resource_type":"ipv4","start_key":"000000000000000000000000d8b57800","end_key":"000000000000000000000000d8b578ff","captured_at":"2026-10-29T18:49:48+00:00","reason":"7d","authoritative_rir":"ARIN","handle":"NET-216-181-120-0-1","name":"CENSY","status":"active","org_handle":"CENSY","org_name":"Censys, Inc.","registration_date":"2026-10-21T08:13:07-04:00","last_changed_date":"2026-10-21T08:13:07-04:00","rdap_url":"https://rdap.arin.net/registry/ip/216.181.120.0"},{"resource_type":"ipv4","start_key":"000000000000000000000000d8b57800","end_key":"000000000000000000000000d8b578ff","captured_at":"2026-10-24T18:17:57+00:00","reason":"24h","authoritative_rir":"ARIN","handle":"NET-216-181-120-0-1","name":"CENSY","status":"active","org_handle":"CENSY","org_name":"Censys, Inc.","registration_date":"2026-10-21T08:13:07-04:00","last_changed_date":"2026-10-21T08:13:07-04:00","rdap_url":"https://rdap.arin.net/registry/ip/216.181.120.0"},{"resource_type":"ipv4","start_key":"000000000000000000000000d8b57800","end_key":"000000000000000000000000d8b578ff","captured_at":"2026-10-22T18:59:36+00:00","reason":"first","authoritative_rir":"ARIN","handle":"NET-216-181-120-0-1","name":"CENSY","status":"active","org_handle":"CENSY","org_name":"Censys, Inc.","registration_date":"2026-10-21T08:13:07-04:00","last_changed_date":"2026-10-21T08:13:07-04:00","rdap_url":"https://rdap.arin.net/registry/ip/216.181.120.0"}],"transfers":[{"id":134144,"date":"2026-10-21T12:13:07Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"WebStream llc","recipient_org":"Censys, Inc.","range":"216.181.120.0/24","log":"ARIN"},{"id":35407,"date":"2024-05-07T21:35:07Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"PTGi International Carrier Services, Inc.","recipient_org":"WebStream llc","range":"216.181.120.0/24","log":"ARIN"},{"id":9544,"date":"2017-05-23T20:05:01Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Primus Telecommunications, Inc.","recipient_org":"PTGi International Carrier Services, Inc.","range":"216.181.120.0/24","log":"ARIN"}],"events":[{"event_id":"02d0ffd2ab0c381a","registry":"ARIN","report_date":"2026-10-21","source":"arin_issued","raw_action":"ADD","raw_line":"Add 216.181.120.0-216.181.120.255","resource_type":"ipv4","resource":"216.181.120.0/24","start":"216.181.120.0","end":"216.181.120.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"WebStream llc","recipient_organization":"Censys, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-22T19:27:19+00:00","page":"https://rirtracker.com/ip/216.181.120.0-216.181.120.255/#e-02d0ffd2ab0c381a","report_page":"https://rirtracker.com/arin/reports/2026-10-21/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.181.120.0-216.181.120.255.json","explanation":"ARIN's transfer log records a transfer from WebStream llc (ARIN) to Censys, Inc. (ARIN) on 2026-10-21 12:13 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/2026-October/006525.html","retrieved_at":"2026-10-22T18:17:04+00:00","summary":"ARIN-Issued report for 2026-10-21: \"Add 216.181.120.0-216.181.120.255\""},{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-22T18:17:07+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2026-10-21 12:13 UTC, WebStream llc (ARIN) to Censys, Inc. (ARIN); resources moved: 216.181.120.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261020","retrieved_at":"2026-10-20T18:17:12+00:00","summary":"ARIN delegated statistics 2026-10-20 (produced 2026-10-20T13:00:20+00:00), before the report: allocated (dated 2024-05-07)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20261022","retrieved_at":"2026-10-22T18:17:15+00:00","summary":"ARIN delegated statistics 2026-10-22 (produced 2026-10-22T13:00:21+00:00), after the report: allocated (dated 2026-10-21)"}]},{"event_id":"38b132460145bb4f","registry":"ARIN","report_date":"2024-05-07","source":"arin_issued","raw_action":"ADD","raw_line":"Add 216.181.120.0-216.181.120.255","resource_type":"ipv4","resource":"216.181.120.0/24","start":"216.181.120.0","end":"216.181.120.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"PTGi International Carrier Services, Inc.","recipient_organization":"WebStream llc","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:04+00:00","page":"https://rirtracker.com/ip/216.181.120.0-216.181.120.255/#e-38b132460145bb4f","report_page":"https://rirtracker.com/arin/reports/2024-05-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.181.120.0-216.181.120.255.json","explanation":"ARIN's transfer log records a transfer from PTGi International Carrier Services, Inc. (ARIN) to WebStream llc (ARIN) on 2024-05-07 21:35 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-May/005625.html","retrieved_at":"2026-10-12T18:42:35+00:00","summary":"ARIN-Issued report for 2024-05-07: \"Add 216.181.120.0-216.181.120.255\""},{"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 2024-05-07 21:35 UTC, PTGi International Carrier Services, Inc. (ARIN) to WebStream llc (ARIN); resources moved: 216.181.120.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240506.gz","retrieved_at":"2026-10-12T23:39:37+00:00","summary":"ARIN delegated statistics 2024-05-06 (produced 2024-05-06T13:00:47+00:00), before the report: allocated (dated 2000-05-24)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240508.gz","retrieved_at":"2026-10-12T23:39:42+00:00","summary":"ARIN delegated statistics 2024-05-08 (produced 2024-05-08T13:00:47+00:00), after the report: allocated (dated 2024-05-07)"}]},{"event_id":"580e6fda52d9484f","registry":"ARIN","report_date":"2017-05-23","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"216.181.120.0/24","start":"216.181.120.0","end":"216.181.120.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Primus Telecommunications, Inc.","recipient_organization":"PTGi International Carrier Services, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:29+00:00","page":"https://rirtracker.com/ip/216.181.120.0-216.181.120.255/#e-580e6fda52d9484f","report_page":"https://rirtracker.com/arin/reports/2017-05-23/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.181.120.0-216.181.120.255.json","observed":"Merger/acquisition: Primus Telecommunications, Inc. (ARIN) to PTGi International Carrier Services, Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Primus Telecommunications, Inc. (ARIN) to PTGi International Carrier Services, Inc. (ARIN) on 2017-05-23 20:05 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 2017-05-23 20:05 UTC, Primus Telecommunications, Inc. (ARIN) to PTGi International Carrier Services, Inc. (ARIN); resources moved: 216.181.120.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170522.gz","retrieved_at":"2026-10-12T21:28:29+00:00","summary":"ARIN delegated statistics 2017-05-22 (produced 2017-05-22T05:09:48+00:00), before the report: allocated (dated 2000-05-24)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170524.gz","retrieved_at":"2026-10-12T21:28:34+00:00","summary":"ARIN delegated statistics 2017-05-24 (produced 2017-05-24T05:10:46+00:00), after the report: allocated (dated 2000-05-24)"}]},{"event_id":"0dcd9ce3c32be175","registry":"ARIN","report_date":"2013-07-29","source":"arin_issued","raw_action":"ADD","raw_line":"Add 216.181.120.0-216.181.120.255","resource_type":"ipv4","resource":"216.181.120.0/24","start":"216.181.120.0","end":"216.181.120.255","classification":"REGISTRATION_CHANGE","classification_label":"Registration or organization record change","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:07+00:00","page":"https://rirtracker.com/ip/216.181.120.0-216.181.120.255/#e-0dcd9ce3c32be175","report_page":"https://rirtracker.com/arin/reports/2013-07-29/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.181.120.0-216.181.120.255.json","explanation":"No transfer record matches. ARIN's statistics show it allocated (dated 2000-05-24) on 2013-07-28 and allocated (dated 2013-07-29) on 2013-07-30. The holder's record is the same before and after, so this is a change to the registration, not a change of holder.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2013-July/001691.html","retrieved_at":"2026-10-12T18:38:01+00:00","summary":"ARIN-Issued report for 2013-07-29: \"Add 216.181.120.0-216.181.120.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20130728.gz","retrieved_at":"2026-10-12T20:02:24+00:00","summary":"ARIN delegated statistics 2013-07-28 (produced 2013-07-28T05:05:35+00:00), before the report: allocated (dated 2000-05-24)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20130730.gz","retrieved_at":"2026-10-12T20:02:29+00:00","summary":"ARIN delegated statistics 2013-07-30 (produced 2013-07-30T05:05:26+00:00), after the report: allocated (dated 2013-07-29)"}]}],"classification_history":{"02d0ffd2ab0c381a":[{"raw_change_id":578339,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-22T19:27:19+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from WebStream llc (ARIN) to Censys, Inc. (ARIN) on 2026-10-21 12:13 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"38b132460145bb4f":[{"raw_change_id":187158,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T04:02:10+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from PTGi International Carrier Services, Inc. (ARIN) to WebStream llc (ARIN) on 2024-05-07 21:35 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":187158,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:43+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from PTGi International Carrier Services, Inc. (ARIN) to WebStream llc (ARIN) on 2024-05-07 21:35 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":187158,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:35+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from PTGi International Carrier Services, Inc. (ARIN) to WebStream llc (ARIN) on 2024-05-07 21:35 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":187158,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:04+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from PTGi International Carrier Services, Inc. (ARIN) to WebStream llc (ARIN) on 2024-05-07 21:35 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"580e6fda52d9484f":[{"raw_change_id":551974,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:29+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Primus Telecommunications, Inc. (ARIN) to PTGi International Carrier Services, Inc. (ARIN) on 2017-05-23 20:05 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."}],"0dcd9ce3c32be175":[{"raw_change_id":129807,"classification_code":"REGISTRATION_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:21:43+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it allocated (dated 2000-05-24) on 2013-07-28 and allocated (dated 2013-07-29) on 2013-07-30. The holder's record is the same before and after, so this is a change to the registration, not a change of holder."},{"raw_change_id":129807,"classification_code":"REGISTRATION_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:30+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it allocated (dated 2000-05-24) on 2013-07-28 and allocated (dated 2013-07-29) on 2013-07-30. The holder's record is the same before and after, so this is a change to the registration, not a change of holder."},{"raw_change_id":129807,"classification_code":"REGISTRATION_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:05+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it allocated (dated 2000-05-24) on 2013-07-28 and allocated (dated 2013-07-29) on 2013-07-30. The holder's record is the same before and after, so this is a change to the registration, not a change of holder."},{"raw_change_id":129807,"classification_code":"REGISTRATION_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:07+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it allocated (dated 2000-05-24) on 2013-07-28 and allocated (dated 2013-07-29) on 2013-07-30. The holder's record is the same before and after, so this is a change to the registration, not a change of holder."}]},"arin_statistics_now":{"status":"allocated (dated 2026-10-21)"}}