{"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":"143.244.0.0/19","resource_type":"ipv4","page":"https://rirtracker.com/ip/143.244.0.0-143.244.31.255/","statistics_now":{"registry":"APNIC","status":"allocated (dated 2020-07-22)"},"current_holder":{"rir":"APNIC","org":"Byteplus Pte. Ltd.","how":"APNIC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":37419,"date":"2024-12-04T13:29:23Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"CommZoom LLC","recipient_org":"BYTEPLUS PTE. LTD.","range":"143.244.0.0/19","log":"ARIN"},{"id":129817,"date":"2024-12-04T05:40:24Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"CCL-282","recipient_org":"Byteplus Pte. Ltd.","range":"143.244.0.0/19","log":"APNIC"},{"id":21103,"date":"2020-07-22T12:44:18Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"YRC Inc.","recipient_org":"CommZoom LLC","range":"143.244.0.0/19","log":"ARIN"},{"id":19444,"date":"2019-12-05T16:48:47Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Yellow Transportation Inc.","recipient_org":"YRC Inc.","range":"143.244.0.0/16","log":"ARIN"}],"events":[{"event_id":"2dfd453f3849f387","registry":"APNIC","report_date":"2024-12-04","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"143.244.0.0/19","start":"143.244.0.0","end":"143.244.31.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into APNIC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"CCL-282","recipient_organization":"Byteplus Pte. 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":"2026-10-13T23:46:52+00:00","page":"https://rirtracker.com/ip/143.244.0.0-143.244.31.255/#e-2dfd453f3849f387","report_page":"https://rirtracker.com/apnic/reports/2024-12-04/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/143.244.0.0-143.244.31.255.json","observed":"Transfer: CCL-282 (ARIN) to Byteplus Pte. Ltd. (APNIC)","same_transfer_as":"1c00df97467c21a3","explanation":"APNIC's transfer log records a transfer from CCL-282 (ARIN) to Byteplus Pte. Ltd. (APNIC) on 2024-12-04 05:40 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 2024-12-04 05:40 UTC, CCL-282 (ARIN) to Byteplus Pte. Ltd. (APNIC); resources moved: 52.128.128.0/19, 143.244.0.0/19"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2024/delegated-apnic-extended-20241204.gz","retrieved_at":"2026-10-13T01:24:27+00:00","summary":"APNIC delegated statistics 2024-12-04, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2024/delegated-apnic-extended-20241205.gz","retrieved_at":"2026-10-13T01:24:31+00:00","summary":"APNIC delegated statistics 2024-12-05, after the change: allocated (dated 2020-07-22)"}]},{"event_id":"1c00df97467c21a3","registry":"ARIN","report_date":"2024-12-03","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"143.244.0.0/19","start":"143.244.0.0","end":"143.244.31.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"CommZoom LLC","recipient_organization":"BYTEPLUS PTE. 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":"2026-10-14T00:12:42+00:00","page":"https://rirtracker.com/ip/143.244.0.0-143.244.31.255/#e-1c00df97467c21a3","report_page":"https://rirtracker.com/arin/reports/2024-12-03/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/143.244.0.0-143.244.31.255.json","observed":"143.244.0.0/19 allocated on 2024-12-03, not listed on 2024-12-04","same_transfer_as":"2dfd453f3849f387","explanation":"ARIN's transfer log records a transfer from CommZoom LLC (ARIN) to BYTEPLUS PTE. LTD. (APNIC) on 2024-12-04 13:29 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/2024/delegated-arin-extended-20241204.gz","retrieved_at":"2026-10-12T23:51:02+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 143.244.0.0/19 allocated on 2024-12-03, not listed on 2024-12-04"},{"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 2024-12-04 13:29 UTC, CommZoom LLC (ARIN) to BYTEPLUS PTE. LTD. (APNIC); resources moved: 143.244.0.0/19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20241202.gz","retrieved_at":"2026-10-12T23:50:57+00:00","summary":"ARIN delegated statistics 2024-12-02 (produced 2024-12-02T14:01:06+00:00), before the report: allocated (dated 2020-07-22)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20241204.gz","retrieved_at":"2026-10-12T23:51:02+00:00","summary":"ARIN delegated statistics 2024-12-04 (produced 2024-12-04T14:01:07+00:00), after the report: not listed"}]},{"event_id":"b769b531d21a55e8","registry":"ARIN","report_date":"2020-07-22","source":"arin_issued","raw_action":"ADD","raw_line":"Add 143.244.0.0-143.244.31.255","resource_type":"ipv4","resource":"143.244.0.0/19","start":"143.244.0.0","end":"143.244.31.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"YRC Inc.","recipient_organization":"CommZoom LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:54+00:00","page":"https://rirtracker.com/ip/143.244.0.0-143.244.31.255/#e-b769b531d21a55e8","report_page":"https://rirtracker.com/arin/reports/2020-07-22/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/143.244.0.0-143.244.31.255.json","piece_of":{"resource":"143.244.0.0/16","page":"https://rirtracker.com/ip/143.244.0.0-143.244.255.255/"},"explanation":"ARIN's transfer log records a transfer from YRC Inc. (ARIN) to CommZoom LLC (ARIN) on 2020-07-22 12:44 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/2020-July/004240.html","retrieved_at":"2026-10-12T18:40:58+00:00","summary":"ARIN-Issued report for 2020-07-22: \"Add 143.244.0.0-143.244.31.255\""},{"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 2020-07-22 12:44 UTC, YRC Inc. (ARIN) to CommZoom LLC (ARIN); resources moved: 143.244.0.0/19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200721.gz","retrieved_at":"2026-10-12T22:27:30+00:00","summary":"ARIN delegated statistics 2020-07-21 (produced 2020-07-21T14:00:13+00:00), before the report: assigned (dated 1990-10-26)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20200723.gz","retrieved_at":"2026-10-12T22:27:35+00:00","summary":"ARIN delegated statistics 2020-07-23 (produced 2020-07-23T14:00:13+00:00), after the report: allocated (dated 2020-07-22)"}]}],"classification_history":{"2dfd453f3849f387":[{"raw_change_id":41630,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:38:31+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from CCL-282 (ARIN) to Byteplus Pte. Ltd. (APNIC) on 2024-12-04 05:40 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":41630,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:02:05+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from CCL-282 (ARIN) to Byteplus Pte. Ltd. (APNIC) on 2024-12-04 05:40 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":41630,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:16+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from CCL-282 (ARIN) to Byteplus Pte. Ltd. (APNIC) on 2024-12-04 05:40 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":41630,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:52+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from CCL-282 (ARIN) to Byteplus Pte. Ltd. (APNIC) on 2024-12-04 05:40 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."}],"1c00df97467c21a3":[{"raw_change_id":473220,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T06:11:05+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from CommZoom LLC (ARIN) to BYTEPLUS PTE. LTD. (APNIC) on 2024-12-04 13:29 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":473220,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:23:18+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from CommZoom LLC (ARIN) to BYTEPLUS PTE. LTD. (APNIC) on 2024-12-04 13:29 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":473220,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T15:07:24+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from CommZoom LLC (ARIN) to BYTEPLUS PTE. LTD. (APNIC) on 2024-12-04 13:29 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":473220,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:12:42+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from CommZoom LLC (ARIN) to BYTEPLUS PTE. LTD. (APNIC) on 2024-12-04 13:29 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."}],"b769b531d21a55e8":[{"raw_change_id":166647,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:49:05+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from YRC Inc. (ARIN) to CommZoom LLC (ARIN) on 2020-07-22 12:44 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":166647,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:51+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from YRC Inc. (ARIN) to CommZoom LLC (ARIN) on 2020-07-22 12:44 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":166647,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:36+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from YRC Inc. (ARIN) to CommZoom LLC (ARIN) on 2020-07-22 12:44 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":166647,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:54+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from YRC Inc. (ARIN) to CommZoom LLC (ARIN) on 2020-07-22 12:44 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}]},"arin_statistics_now":{"status":"not listed"}}