{"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":"74.121.152.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/74.121.152.0-74.121.159.255/","statistics_now":{"registry":"APNIC","status":"allocated (dated 2010-01-21)"},"current_holder":{"rir":"APNIC","org":"Digital HK Kin Chuen Limited","how":"APNIC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":26471,"date":"2021-12-21T10:43:12Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"Rudolph Holdings, LLC","recipient_org":"Digital HK Kin Chuen Limited","range":"74.121.152.0/21","log":"ARIN"},{"id":127675,"date":"2021-12-21T06:22:43Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"RUDOL-10","recipient_org":"Digital HK Kin Chuen Limited","range":"74.121.152.0/21","log":"APNIC"}],"events":[{"event_id":"c7fe41e72ae32f39","registry":"APNIC","report_date":"2021-12-21","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"74.121.152.0/21","start":"74.121.152.0","end":"74.121.159.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into APNIC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"RUDOL-10","recipient_organization":"Digital HK Kin Chuen Limited","inventory_effect":"Transferred into APNIC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:44+00:00","page":"https://rirtracker.com/ip/74.121.152.0-74.121.159.255/#e-c7fe41e72ae32f39","report_page":"https://rirtracker.com/apnic/reports/2021-12-21/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/74.121.152.0-74.121.159.255.json","observed":"Transfer: RUDOL-10 (ARIN) to Digital HK Kin Chuen Limited (APNIC)","same_transfer_as":"72799d4fa1bc57bf","explanation":"APNIC's transfer log records a transfer from RUDOL-10 (ARIN) to Digital HK Kin Chuen Limited (APNIC) on 2021-12-21 06:22 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 2021-12-21 06:22 UTC, RUDOL-10 (ARIN) to Digital HK Kin Chuen Limited (APNIC); resources moved: 74.114.168.0/22, 74.121.152.0/21"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2021/delegated-apnic-extended-20211221.gz","retrieved_at":"2026-10-13T00:01:09+00:00","summary":"APNIC delegated statistics 2021-12-21, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2021/delegated-apnic-extended-20211222.gz","retrieved_at":"2026-10-13T00:01:24+00:00","summary":"APNIC delegated statistics 2021-12-22, after the change: allocated (dated 2010-01-21)"}]},{"event_id":"72799d4fa1bc57bf","registry":"ARIN","report_date":"2021-12-20","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"74.121.152.0/21","start":"74.121.152.0","end":"74.121.159.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"Rudolph Holdings, LLC","recipient_organization":"Digital HK Kin Chuen Limited","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":"2026-10-14T00:08:50+00:00","page":"https://rirtracker.com/ip/74.121.152.0-74.121.159.255/#e-72799d4fa1bc57bf","report_page":"https://rirtracker.com/arin/reports/2021-12-20/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/74.121.152.0-74.121.159.255.json","observed":"74.121.152.0/21 allocated on 2021-12-20, not listed on 2021-12-21","same_transfer_as":"c7fe41e72ae32f39","explanation":"ARIN's transfer log records a transfer from Rudolph Holdings, LLC (ARIN) to Digital HK Kin Chuen Limited (APNIC) on 2021-12-21 10:43 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/2021/delegated-arin-extended-20211221.gz","retrieved_at":"2026-10-12T22:54:08+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 74.121.152.0/21 allocated on 2021-12-20, not listed on 2021-12-21"},{"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 2021-12-21 10:43 UTC, Rudolph Holdings, LLC (ARIN) to Digital HK Kin Chuen Limited (APNIC); resources moved: 74.121.152.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211219.gz","retrieved_at":"2026-10-12T22:54:03+00:00","summary":"ARIN delegated statistics 2021-12-19 (produced 2021-12-19T14:00:14+00:00), before the report: allocated (dated 2010-01-21)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20211221.gz","retrieved_at":"2026-10-12T22:54:08+00:00","summary":"ARIN delegated statistics 2021-12-21 (produced 2021-12-21T14:00:13+00:00), after the report: not listed"}]},{"event_id":"33661f2dbf79ddf1","registry":"ARIN","report_date":"2010-01-21","source":"arin_issued","raw_action":"ADD","raw_line":"Add 74.121.152.0-74.121.159.255","resource_type":"ipv4","resource":"74.121.152.0/21","start":"74.121.152.0","end":"74.121.159.255","classification":"APPARENT_NEW_ISSUANCE","classification_label":"Apparent new issuance","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from ARIN-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:47+00:00","page":"https://rirtracker.com/ip/74.121.152.0-74.121.159.255/#e-33661f2dbf79ddf1","report_page":"https://rirtracker.com/arin/reports/2010-01-21/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/74.121.152.0-74.121.159.255.json","explanation":"No transfer record matches. ARIN's statistics show it not issued on 2010-01-20 and allocated (dated 2010-01-21) on 2010-01-22. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2010-January/000401.html","retrieved_at":"2026-10-12T18:36:32+00:00","summary":"ARIN-Issued report for 2010-01-21: \"Add 74.121.152.0-74.121.159.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2010/delegated-arin-20100120.gz","retrieved_at":"2026-10-12T19:00:23+00:00","summary":"ARIN delegated statistics 2010-01-20, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2010/delegated-arin-20100122.gz","retrieved_at":"2026-10-12T19:00:27+00:00","summary":"ARIN delegated statistics 2010-01-22, after the report: allocated (dated 2010-01-21)"}]}],"classification_history":{"c7fe41e72ae32f39":[{"raw_change_id":38371,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:37:03+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from RUDOL-10 (ARIN) to Digital HK Kin Chuen Limited (APNIC) on 2021-12-21 06:22 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":38371,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:01:58+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from RUDOL-10 (ARIN) to Digital HK Kin Chuen Limited (APNIC) on 2021-12-21 06:22 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":38371,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:08+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from RUDOL-10 (ARIN) to Digital HK Kin Chuen Limited (APNIC) on 2021-12-21 06:22 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":38371,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:44+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from RUDOL-10 (ARIN) to Digital HK Kin Chuen Limited (APNIC) on 2021-12-21 06:22 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."}],"72799d4fa1bc57bf":[{"raw_change_id":422025,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T05:48:56+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Rudolph Holdings, LLC (ARIN) to Digital HK Kin Chuen Limited (APNIC) on 2021-12-21 10:43 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":422025,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:20:11+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Rudolph Holdings, LLC (ARIN) to Digital HK Kin Chuen Limited (APNIC) on 2021-12-21 10:43 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":422025,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T15:04:04+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Rudolph Holdings, LLC (ARIN) to Digital HK Kin Chuen Limited (APNIC) on 2021-12-21 10:43 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":422025,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:08:50+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Rudolph Holdings, LLC (ARIN) to Digital HK Kin Chuen Limited (APNIC) on 2021-12-21 10:43 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."}],"33661f2dbf79ddf1":[{"raw_change_id":120780,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:11:49+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2010-01-20 and allocated (dated 2010-01-21) on 2010-01-22. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2009-01-14 (74.96.0.0-74.124.159.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":120780,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:16+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2010-01-20 and allocated (dated 2010-01-21) on 2010-01-22. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2009-01-14 (74.96.0.0-74.124.159.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":120780,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:49+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2010-01-20 and allocated (dated 2010-01-21) on 2010-01-22. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2009-01-14 (74.96.0.0-74.124.159.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":120780,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:47+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2010-01-20 and allocated (dated 2010-01-21) on 2010-01-22. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}]},"arin_statistics_now":{"status":"not listed"}}