{"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":"150.147.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/150.147.0.0-150.147.255.255/","statistics_now":{"registry":"APNIC","status":"allocated (dated 1991-05-09)"},"current_holder":{"rir":"APNIC","org":"Sony Network Communications Inc.","how":"APNIC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":9475,"date":"2017-05-09T14:21:13Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"SirsiDynix","recipient_org":"Sony Network Communications Inc.","range":"150.147.0.0/16","log":"ARIN"},{"id":125061,"date":"2017-05-09T04:35:52Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"SC-2233-Z","recipient_org":"Japan Network Information Center/so-net","range":"150.147.0.0/16","log":"APNIC"},{"id":8638,"date":"2017-01-31T19:27:41Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Data Research Associates, Inc.","recipient_org":"SirsiDynix","range":"150.147.0.0/16","log":"ARIN"}],"events":[{"event_id":"c0e10440f383e966","registry":"ARIN","report_date":"2017-05-09","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"150.147.0.0/16","start":"150.147.0.0","end":"150.147.255.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"SirsiDynix","recipient_organization":"Sony Network Communications Inc.","inventory_effect":"Transferred out of ARIN administration; not offered to ARIN applicants","inventory_effect_code":"TRANSFER_OUT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:03:01+00:00","page":"https://rirtracker.com/ip/150.147.0.0-150.147.255.255/#e-c0e10440f383e966","report_page":"https://rirtracker.com/arin/reports/2017-05-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/150.147.0.0-150.147.255.255.json","observed":"150.147.0.0/16 allocated on 2017-05-09, not listed on 2017-05-10","same_transfer_as":"94cbc6726f11bdc9","explanation":"ARIN's transfer log records a transfer from SirsiDynix (ARIN) to Sony Network Communications Inc. (APNIC) on 2017-05-09 14:21 UTC: it left ARIN for APNIC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170510.gz","retrieved_at":"2026-10-12T21:27:51+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 150.147.0.0/16 allocated on 2017-05-09, not listed on 2017-05-10"},{"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 2017-05-09 14:21 UTC, SirsiDynix (ARIN) to Sony Network Communications Inc. (APNIC); resources moved: 150.147.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170508.gz","retrieved_at":"2026-10-12T21:27:46+00:00","summary":"ARIN delegated statistics 2017-05-08 (produced 2017-05-08T05:09:28+00:00), before the report: allocated (dated 1991-05-16)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170510.gz","retrieved_at":"2026-10-12T21:27:51+00:00","summary":"ARIN delegated statistics 2017-05-10 (produced 2017-05-10T05:09:53+00:00), after the report: not listed"}]},{"event_id":"94cbc6726f11bdc9","registry":"APNIC","report_date":"2017-05-09","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"150.147.0.0/16","start":"150.147.0.0","end":"150.147.255.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into APNIC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"SC-2233-Z","recipient_organization":"Japan Network Information Center/so-net","inventory_effect":"Transferred into APNIC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:34+00:00","page":"https://rirtracker.com/ip/150.147.0.0-150.147.255.255/#e-94cbc6726f11bdc9","report_page":"https://rirtracker.com/apnic/reports/2017-05-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/150.147.0.0-150.147.255.255.json","observed":"Transfer: SC-2233-Z (ARIN) to Japan Network Information Center/so-net (APNIC)","same_transfer_as":"c0e10440f383e966","explanation":"APNIC's transfer log records a transfer from SC-2233-Z (ARIN) to Japan Network Information Center/so-net (APNIC) on 2017-05-09 04:35 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance.","evidence":[{"type":"transfer","url":"https://ftp.apnic.net/stats/apnic/transfers/transfers_latest.json","retrieved_at":"2026-10-13T18:17:16+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2017-05-09 04:35 UTC, SC-2233-Z (ARIN) to Japan Network Information Center/so-net (APNIC); resources moved: 150.147.0.0/16"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2017/delegated-apnic-extended-20170509.gz","retrieved_at":"2026-10-12T22:03:38+00:00","summary":"APNIC delegated statistics 2017-05-09, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2017/delegated-apnic-extended-20170510.gz","retrieved_at":"2026-10-12T22:03:42+00:00","summary":"APNIC delegated statistics 2017-05-10, after the change: allocated (dated 2017-05-09)"}]},{"event_id":"1ff4eb92d9f74f3b","registry":"ARIN","report_date":"2017-01-31","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"150.147.0.0/16","start":"150.147.0.0","end":"150.147.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Data Research Associates, Inc.","recipient_organization":"SirsiDynix","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:28+00:00","page":"https://rirtracker.com/ip/150.147.0.0-150.147.255.255/#e-1ff4eb92d9f74f3b","report_page":"https://rirtracker.com/arin/reports/2017-01-31/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/150.147.0.0-150.147.255.255.json","observed":"Merger/acquisition: Data Research Associates, Inc. (ARIN) to SirsiDynix (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Data Research Associates, Inc. (ARIN) to SirsiDynix (ARIN) on 2017-01-31 19:27 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 2017-01-31 19:27 UTC, Data Research Associates, Inc. (ARIN) to SirsiDynix (ARIN); resources moved: 150.147.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170130.gz","retrieved_at":"2026-10-12T21:22:54+00:00","summary":"ARIN delegated statistics 2017-01-30 (produced 2017-01-30T06:08:26+00:00), before the report: allocated (dated 1991-05-16)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170201.gz","retrieved_at":"2026-10-12T21:22:58+00:00","summary":"ARIN delegated statistics 2017-02-01 (produced 2017-02-01T06:09:49+00:00), after the report: allocated (dated 1991-05-16)"}]}],"classification_history":{"c0e10440f383e966":[{"raw_change_id":334176,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T05:11:38+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from SirsiDynix (ARIN) to Sony Network Communications Inc. (APNIC) on 2017-05-09 14:21 UTC: it left ARIN for APNIC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":334176,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:15:23+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from SirsiDynix (ARIN) to Sony Network Communications Inc. (APNIC) on 2017-05-09 14:21 UTC: it left ARIN for APNIC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":334176,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:58:54+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from SirsiDynix (ARIN) to Sony Network Communications Inc. (APNIC) on 2017-05-09 14:21 UTC: it left ARIN for APNIC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":334176,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:03:01+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from SirsiDynix (ARIN) to Sony Network Communications Inc. (APNIC) on 2017-05-09 14:21 UTC: it left ARIN for APNIC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."}],"94cbc6726f11bdc9":[{"raw_change_id":34358,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:35:20+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from SC-2233-Z (ARIN) to Japan Network Information Center/so-net (APNIC) on 2017-05-09 04:35 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":34358,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:01:50+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from SC-2233-Z (ARIN) to Japan Network Information Center/so-net (APNIC) on 2017-05-09 04:35 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":34358,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:00+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from SC-2233-Z (ARIN) to Japan Network Information Center/so-net (APNIC) on 2017-05-09 04:35 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":34358,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:34+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from SC-2233-Z (ARIN) to Japan Network Information Center/so-net (APNIC) on 2017-05-09 04:35 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."}],"1ff4eb92d9f74f3b":[{"raw_change_id":551374,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:28+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Data Research Associates, Inc. (ARIN) to SirsiDynix (ARIN) on 2017-01-31 19:27 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":"not listed"}}