{"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":"52.130.0.0/15","resource_type":"ipv4","page":"https://rirtracker.com/ip/52.130.0.0-52.131.255.255/","statistics_now":{"registry":"APNIC","status":"allocated (dated 2015-11-24)"},"current_holder":{"rir":"APNIC","org":"China Internet Network Information Center/BLUECLOUD","how":"APNIC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":125663,"date":"2018-02-09T01:11:24Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"APNIC","source_org":"Microsoft Singapore Pte. Ltd.","recipient_org":"China Internet Network Information Center/BLUECLOUD","range":"52.130.0.0/15","log":"APNIC"},{"id":10095,"date":"2017-06-12T14:33:07Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"Microsoft Corporation","recipient_org":"Microsoft Operations Pte. Ltd.","range":"52.130.0.0/15","log":"ARIN"},{"id":125288,"date":"2017-06-12T02:37:43Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"MSFT","recipient_org":"Microsoft Singapore Pte. Ltd.","range":"52.130.0.0/15","log":"APNIC"},{"id":6180,"date":"2015-11-24T18:09:10Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"E.I. du Pont de Nemours and Co., Inc.","recipient_org":"Microsoft Corporation","range":"52.130.0.0/15","log":"ARIN"}],"events":[{"event_id":"ed990ad977a072bd","registry":"APNIC","report_date":"2018-02-09","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"52.130.0.0/15","start":"52.130.0.0","end":"52.131.255.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-APNIC transfer","confidence":"CONFIRMED","source_rir":"APNIC","recipient_rir":"APNIC","source_organization":"Microsoft Singapore Pte. Ltd.","recipient_organization":"China Internet Network Information Center/BLUECLOUD","inventory_effect":"No effect on APNIC applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:36+00:00","page":"https://rirtracker.com/ip/52.130.0.0-52.131.255.255/#e-ed990ad977a072bd","report_page":"https://rirtracker.com/apnic/reports/2018-02-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/52.130.0.0-52.131.255.255.json","observed":"Transfer: Microsoft Singapore Pte. Ltd. (APNIC) to China Internet Network Information Center/BLUECLOUD (APNIC)","explanation":"APNIC's transfer log records a transfer from Microsoft Singapore Pte. Ltd. (APNIC) to China Internet Network Information Center/BLUECLOUD (APNIC) on 2018-02-09 01:11 UTC. The registration changed hands; it is not a new allocation from APNIC.","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 2018-02-09 01:11 UTC, Microsoft Singapore Pte. Ltd. (APNIC) to China Internet Network Information Center/BLUECLOUD (APNIC); resources moved: 52.130.0.0/15"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2018/delegated-apnic-extended-20180209.gz","retrieved_at":"2026-10-12T22:21:51+00:00","summary":"APNIC delegated statistics 2018-02-09, before the change: allocated (dated 2017-06-12)"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2018/delegated-apnic-extended-20180210.gz","retrieved_at":"2026-10-12T22:21:55+00:00","summary":"APNIC delegated statistics 2018-02-10, after the change: allocated (dated 2017-06-12)"}]},{"event_id":"0207cd0aa2617090","registry":"ARIN","report_date":"2017-06-12","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"52.130.0.0/15","start":"52.130.0.0","end":"52.131.255.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"Microsoft Corporation","recipient_organization":"Microsoft Operations 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":"2026-10-14T00:03:09+00:00","page":"https://rirtracker.com/ip/52.130.0.0-52.131.255.255/#e-0207cd0aa2617090","report_page":"https://rirtracker.com/arin/reports/2017-06-12/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/52.130.0.0-52.131.255.255.json","observed":"52.130.0.0/15 assigned on 2017-06-12, not listed on 2017-06-13","same_transfer_as":"778aeee3ba270b11","explanation":"ARIN's transfer log records a transfer from Microsoft Corporation (ARIN) to Microsoft Operations Pte. Ltd. (APNIC) on 2017-06-12 14:33 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-20170613.gz","retrieved_at":"2026-10-12T21:29:38+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 52.130.0.0/15 assigned on 2017-06-12, not listed on 2017-06-13"},{"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 2017-06-12 14:33 UTC, Microsoft Corporation (ARIN) to Microsoft Operations Pte. Ltd. (APNIC); resources moved: 52.130.0.0/15"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170611.gz","retrieved_at":"2026-10-12T21:29:33+00:00","summary":"ARIN delegated statistics 2017-06-11 (produced 2017-06-11T05:10:02+00:00), before the report: assigned (dated 2015-11-24)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170613.gz","retrieved_at":"2026-10-12T21:29:38+00:00","summary":"ARIN delegated statistics 2017-06-13 (produced 2017-06-13T05:09:45+00:00), after the report: not listed"}]},{"event_id":"778aeee3ba270b11","registry":"APNIC","report_date":"2017-06-12","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"52.130.0.0/15","start":"52.130.0.0","end":"52.131.255.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into APNIC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"MSFT","recipient_organization":"Microsoft Singapore 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":"2026-10-13T23:46:35+00:00","page":"https://rirtracker.com/ip/52.130.0.0-52.131.255.255/#e-778aeee3ba270b11","report_page":"https://rirtracker.com/apnic/reports/2017-06-12/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/52.130.0.0-52.131.255.255.json","observed":"Transfer: MSFT (ARIN) to Microsoft Singapore Pte. Ltd. (APNIC)","same_transfer_as":"0207cd0aa2617090","explanation":"APNIC's transfer log records a transfer from MSFT (ARIN) to Microsoft Singapore Pte. Ltd. (APNIC) on 2017-06-12 02:37 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 2017-06-12 02:37 UTC, MSFT (ARIN) to Microsoft Singapore Pte. Ltd. (APNIC); resources moved: 52.130.0.0/15"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2017/delegated-apnic-extended-20170612.gz","retrieved_at":"2026-10-12T22:05:47+00:00","summary":"APNIC delegated statistics 2017-06-12, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2017/delegated-apnic-extended-20170613.gz","retrieved_at":"2026-10-12T22:05:50+00:00","summary":"APNIC delegated statistics 2017-06-13, after the change: allocated (dated 2017-06-12)"}]}],"classification_history":{"ed990ad977a072bd":[{"raw_change_id":35139,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:35:40+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from Microsoft Singapore Pte. Ltd. (APNIC) to China Internet Network Information Center/BLUECLOUD (APNIC) on 2018-02-09 01:11 UTC. The registration changed hands; it is not a new allocation from APNIC."},{"raw_change_id":35139,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:01:51+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from Microsoft Singapore Pte. Ltd. (APNIC) to China Internet Network Information Center/BLUECLOUD (APNIC) on 2018-02-09 01:11 UTC. The registration changed hands; it is not a new allocation from APNIC."},{"raw_change_id":35139,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:01+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from Microsoft Singapore Pte. Ltd. (APNIC) to China Internet Network Information Center/BLUECLOUD (APNIC) on 2018-02-09 01:11 UTC. The registration changed hands; it is not a new allocation from APNIC."},{"raw_change_id":35139,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:36+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from Microsoft Singapore Pte. Ltd. (APNIC) to China Internet Network Information Center/BLUECLOUD (APNIC) on 2018-02-09 01:11 UTC. The registration changed hands; it is not a new allocation from APNIC."}],"0207cd0aa2617090":[{"raw_change_id":336281,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T05:12:45+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Microsoft Corporation (ARIN) to Microsoft Operations Pte. Ltd. (APNIC) on 2017-06-12 14:33 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":336281,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:15:30+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Microsoft Corporation (ARIN) to Microsoft Operations Pte. Ltd. (APNIC) on 2017-06-12 14:33 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":336281,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:59:01+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Microsoft Corporation (ARIN) to Microsoft Operations Pte. Ltd. (APNIC) on 2017-06-12 14:33 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":336281,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:03:09+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Microsoft Corporation (ARIN) to Microsoft Operations Pte. Ltd. (APNIC) on 2017-06-12 14:33 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."}],"778aeee3ba270b11":[{"raw_change_id":34598,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:35:26+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from MSFT (ARIN) to Microsoft Singapore Pte. Ltd. (APNIC) on 2017-06-12 02:37 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":34598,"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 MSFT (ARIN) to Microsoft Singapore Pte. Ltd. (APNIC) on 2017-06-12 02:37 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":34598,"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 MSFT (ARIN) to Microsoft Singapore Pte. Ltd. (APNIC) on 2017-06-12 02:37 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":34598,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:35+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from MSFT (ARIN) to Microsoft Singapore Pte. Ltd. (APNIC) on 2017-06-12 02:37 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"}}