{"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":"137.83.12.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/137.83.12.0-137.83.12.255/","statistics_now":{"registry":"APNIC","status":"allocated (dated 1989-11-10)"},"current_holder":{"rir":"APNIC","org":"Network Synergy Corporation Pty Ltd","how":"APNIC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":19656,"date":"2019-12-31T16:10:13Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"Northeast Technology Solutions, LLC","recipient_org":"Network Synergy Corporation Pty Ltd","range":"137.83.12.0/24","log":"ARIN"},{"id":126400,"date":"2019-12-30T23:29:15Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"NTSL-14-Z","recipient_org":"Network Synergy Corporation Pty Ltd","range":"137.83.12.0/24","log":"APNIC"},{"id":16521,"date":"2018-12-05T13:45:14Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"OMNOVA Solutions Inc","recipient_org":"Northeast Technology Solutions, LLC","range":"137.83.0.0/16","log":"ARIN"}],"events":[{"event_id":"9cf97ff750c7f302","registry":"ARIN","report_date":"2019-12-31","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"137.83.12.0/24","start":"137.83.12.0","end":"137.83.12.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"Northeast Technology Solutions, LLC","recipient_organization":"Network Synergy Corporation Pty Ltd","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":"2026-10-14T00:06:20+00:00","page":"https://rirtracker.com/ip/137.83.12.0-137.83.12.255/#e-9cf97ff750c7f302","report_page":"https://rirtracker.com/arin/reports/2019-12-31/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/137.83.12.0-137.83.12.255.json","observed":"137.83.12.0/24 assigned on 2019-12-31, not listed on 2020-01-01","same_transfer_as":"cbd870f58b8e484d","explanation":"ARIN's transfer log records a transfer from Northeast Technology Solutions, LLC (ARIN) to Network Synergy Corporation Pty Ltd (APNIC) on 2019-12-31 16:10 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/2020/delegated-arin-extended-20200101.gz","retrieved_at":"2026-10-12T22:16:52+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 137.83.12.0/24 assigned on 2019-12-31, not listed on 2020-01-01"},{"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 2019-12-31 16:10 UTC, Northeast Technology Solutions, LLC (ARIN) to Network Synergy Corporation Pty Ltd (APNIC); resources moved: 137.83.12.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20191230.gz","retrieved_at":"2026-10-12T22:16:47+00:00","summary":"ARIN delegated statistics 2019-12-30 (produced 2019-12-30T15:00:14+00:00), before the report: assigned (dated 1989-11-10)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200101.gz","retrieved_at":"2026-10-12T22:16:52+00:00","summary":"ARIN delegated statistics 2020-01-01 (produced 2020-01-01T15:00:13+00:00), after the report: not listed"}]},{"event_id":"cbd870f58b8e484d","registry":"APNIC","report_date":"2019-12-31","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"137.83.12.0/24","start":"137.83.12.0","end":"137.83.12.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into APNIC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"NTSL-14-Z","recipient_organization":"Network Synergy Corporation Pty Ltd","inventory_effect":"Transferred into APNIC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:39+00:00","page":"https://rirtracker.com/ip/137.83.12.0-137.83.12.255/#e-cbd870f58b8e484d","report_page":"https://rirtracker.com/apnic/reports/2019-12-31/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/137.83.12.0-137.83.12.255.json","observed":"Transfer: NTSL-14-Z (ARIN) to Network Synergy Corporation Pty Ltd (APNIC)","same_transfer_as":"9cf97ff750c7f302","explanation":"APNIC's transfer log records a transfer from NTSL-14-Z (ARIN) to Network Synergy Corporation Pty Ltd (APNIC) on 2019-12-30 23:29 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 2019-12-30 23:29 UTC, NTSL-14-Z (ARIN) to Network Synergy Corporation Pty Ltd (APNIC); resources moved: 137.83.12.0/24"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2019/delegated-apnic-extended-20191231.gz","retrieved_at":"2026-10-12T23:09:29+00:00","summary":"APNIC delegated statistics 2019-12-31, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2020/delegated-apnic-extended-20200101.gz","retrieved_at":"2026-10-12T23:09:32+00:00","summary":"APNIC delegated statistics 2020-01-01, after the change: allocated (dated 1989-11-10)"}]}],"classification_history":{"9cf97ff750c7f302":[{"raw_change_id":385781,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T05:33:35+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Northeast Technology Solutions, LLC (ARIN) to Network Synergy Corporation Pty Ltd (APNIC) on 2019-12-31 16:10 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":385781,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:18:07+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Northeast Technology Solutions, LLC (ARIN) to Network Synergy Corporation Pty Ltd (APNIC) on 2019-12-31 16:10 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":385781,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T15:01:52+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Northeast Technology Solutions, LLC (ARIN) to Network Synergy Corporation Pty Ltd (APNIC) on 2019-12-31 16:10 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":385781,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:06:20+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Northeast Technology Solutions, LLC (ARIN) to Network Synergy Corporation Pty Ltd (APNIC) on 2019-12-31 16:10 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."}],"cbd870f58b8e484d":[{"raw_change_id":36293,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:36:12+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from NTSL-14-Z (ARIN) to Network Synergy Corporation Pty Ltd (APNIC) on 2019-12-30 23:29 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":36293,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:01:54+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from NTSL-14-Z (ARIN) to Network Synergy Corporation Pty Ltd (APNIC) on 2019-12-30 23:29 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":36293,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:04+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from NTSL-14-Z (ARIN) to Network Synergy Corporation Pty Ltd (APNIC) on 2019-12-30 23:29 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":36293,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:39+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from NTSL-14-Z (ARIN) to Network Synergy Corporation Pty Ltd (APNIC) on 2019-12-30 23:29 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."}]},"arin_statistics_now":{"status":"not listed"}}