{"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":"216.144.0.0/18","resource_type":"ipv4","page":"https://rirtracker.com/ip/216.144.0.0-216.144.63.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2014-06-10)"},"current_holder":{"rir":"ARIN","org":"Sony Pictures Technologies Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":14018,"date":"2018-07-30T14:23:22Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Sony Corporation of America","recipient_org":"Sony Pictures Technologies Inc.","range":"216.144.0.0/18","log":"ARIN"},{"id":5495,"date":"2014-06-10T20:54:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"NetLink Services, Inc.","recipient_org":"Sony Corporation of America","range":"216.144.0.0/18","log":"ARIN"}],"events":[{"event_id":"bfe6606ece4a717b","registry":"ARIN","report_date":"2018-07-30","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"216.144.0.0/18","start":"216.144.0.0","end":"216.144.63.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Sony Corporation of America","recipient_organization":"Sony Pictures Technologies Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:37+00:00","page":"https://rirtracker.com/ip/216.144.0.0-216.144.63.255/#e-bfe6606ece4a717b","report_page":"https://rirtracker.com/arin/reports/2018-07-30/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.144.0.0-216.144.63.255.json","observed":"Merger/acquisition: Sony Corporation of America (ARIN) to Sony Pictures Technologies Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Sony Corporation of America (ARIN) to Sony Pictures Technologies Inc. (ARIN) on 2018-07-30 14:23 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 2018-07-30 14:23 UTC, Sony Corporation of America (ARIN) to Sony Pictures Technologies Inc. (ARIN); resources moved: 216.144.0.0/18"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180729.gz","retrieved_at":"2026-10-12T21:50:05+00:00","summary":"ARIN delegated statistics 2018-07-29 (produced 2018-07-29T05:00:20+00:00), before the report: allocated (dated 2014-06-10)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180731.gz","retrieved_at":"2026-10-12T21:50:10+00:00","summary":"ARIN delegated statistics 2018-07-31 (produced 2018-07-31T05:00:22+00:00), after the report: allocated (dated 2014-06-10)"}]},{"event_id":"6e7399cbeb11e680","registry":"ARIN","report_date":"2018-02-06","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"216.144.0.0/18","start":"216.144.0.0","end":"216.144.63.255","classification":"REMOVED_REASON_UNKNOWN","classification_label":"Removed (return, revocation or reclamation not publicly distinguishable)","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Possible future reissue candidate after hold","inventory_effect_code":"HOLD_CANDIDATE","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:03:58+00:00","page":"https://rirtracker.com/ip/216.144.0.0-216.144.63.255/#e-6e7399cbeb11e680","report_page":"https://rirtracker.com/arin/reports/2018-02-06/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.144.0.0-216.144.63.255.json","observed":"216.144.0.0/18 allocated on 2018-02-06, reserved on 2018-02-07","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_days":60,"estimated_hold_end":"2018-04-07","availability_statement":"Possible reissue candidate after this date; not confirmed available"},"explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2014-06-10) on 2018-02-05 and reserved on 2018-02-07. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2018-04-07. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180207.gz","retrieved_at":"2026-10-12T21:41:30+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 216.144.0.0/18 allocated on 2018-02-06, reserved on 2018-02-07"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180205.gz","retrieved_at":"2026-10-12T21:41:25+00:00","summary":"ARIN delegated statistics 2018-02-05 (produced 2018-02-05T06:09:55+00:00), before the report: allocated (dated 2014-06-10)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20180207.gz","retrieved_at":"2026-10-12T21:41:30+00:00","summary":"ARIN delegated statistics 2018-02-07 (produced 2018-02-07T06:09:59+00:00), after the report: reserved"}]},{"event_id":"e562da0f4d77e4f0","registry":"ARIN","report_date":"2014-06-10","source":"arin_issued","raw_action":"ADD","raw_line":"Add 216.144.0.0-216.144.63.255","resource_type":"ipv4","resource":"216.144.0.0/18","start":"216.144.0.0","end":"216.144.63.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"NetLink Services, Inc.","recipient_organization":"Sony Corporation of America","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:12+00:00","page":"https://rirtracker.com/ip/216.144.0.0-216.144.63.255/#e-e562da0f4d77e4f0","report_page":"https://rirtracker.com/arin/reports/2014-06-10/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/216.144.0.0-216.144.63.255.json","explanation":"ARIN's transfer log records a transfer from NetLink Services, Inc. (ARIN) to Sony Corporation of America (ARIN) on 2014-06-10 20:54 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/2014-June/002008.html","retrieved_at":"2026-10-12T18:38:24+00:00","summary":"ARIN-Issued report for 2014-06-10: \"Add 216.144.0.0-216.144.63.255\""},{"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 2014-06-10 20:54 UTC, NetLink Services, Inc. (ARIN) to Sony Corporation of America (ARIN); resources moved: 216.144.0.0/18"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140609.gz","retrieved_at":"2026-10-12T20:17:22+00:00","summary":"ARIN delegated statistics 2014-06-09 (produced 2014-06-09T05:04:22+00:00), before the report: allocated (dated 1998-12-07)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140611.gz","retrieved_at":"2026-10-12T20:17:26+00:00","summary":"ARIN delegated statistics 2014-06-11 (produced 2014-06-11T05:03:51+00:00), after the report: allocated (dated 2014-06-10)"}]}],"classification_history":{"bfe6606ece4a717b":[{"raw_change_id":555305,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:37+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Sony Corporation of America (ARIN) to Sony Pictures Technologies Inc. (ARIN) on 2018-07-30 14:23 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."}],"6e7399cbeb11e680":[{"raw_change_id":349278,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:19:12+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2014-06-10) on 2018-02-05 and reserved on 2018-02-07. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2018-04-07. This does not confirm availability."},{"raw_change_id":349278,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:16:11+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2014-06-10) on 2018-02-05 and reserved on 2018-02-07. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2018-04-07. This does not confirm availability."},{"raw_change_id":349278,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:59:46+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2014-06-10) on 2018-02-05 and reserved on 2018-02-07. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2018-04-07. This does not confirm availability."},{"raw_change_id":349278,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:03:58+00:00","current":1,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2014-06-10) on 2018-02-05 and reserved on 2018-02-07. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2018-04-07. This does not confirm availability."}],"e562da0f4d77e4f0":[{"raw_change_id":132596,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:25:02+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from NetLink Services, Inc. (ARIN) to Sony Corporation of America (ARIN) on 2014-06-10 20:54 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":132596,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:34+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from NetLink Services, Inc. (ARIN) to Sony Corporation of America (ARIN) on 2014-06-10 20:54 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":132596,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:10+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from NetLink Services, Inc. (ARIN) to Sony Corporation of America (ARIN) on 2014-06-10 20:54 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":132596,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:12+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from NetLink Services, Inc. (ARIN) to Sony Corporation of America (ARIN) on 2014-06-10 20:54 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 2014-06-10)"}}