{"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":"121.54.184.0/22","resource_type":"ipv4","page":"https://rirtracker.com/ip/121.54.184.0-121.54.187.255/","statistics_now":{"registry":"RIPE NCC","status":"allocated (dated 2017-07-11)"},"current_holder":{"rir":"RIPE NCC","org":"ORG-BSL34-RIPE","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":128794,"date":"2023-08-22T00:34:15Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"RIPE NCC","source_org":"VASSOS, JON ","recipient_org":"ORG-BSL34-RIPE","range":"121.54.184.0/22","log":"APNIC"},{"id":97584,"date":"2023-08-21T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"BidFX Systems Ltd.","range":"121.54.184.0/22","log":"RIPE NCC"}],"events":[{"event_id":"5458b7806e20c693","registry":"APNIC","report_date":"2023-08-22","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"121.54.184.0/22","start":"121.54.184.0","end":"121.54.187.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of APNIC","confidence":"CONFIRMED","source_rir":"APNIC","recipient_rir":"RIPE NCC","source_organization":"VASSOS, JON ","recipient_organization":"ORG-BSL34-RIPE","inventory_effect":"Transferred out of APNIC administration; not offered to APNIC applicants","inventory_effect_code":"TRANSFER_OUT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:48+00:00","page":"https://rirtracker.com/ip/121.54.184.0-121.54.187.255/#e-5458b7806e20c693","report_page":"https://rirtracker.com/apnic/reports/2023-08-22/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/121.54.184.0-121.54.187.255.json","observed":"Transfer: VASSOS, JON  (APNIC) to ORG-BSL34-RIPE (RIPE NCC)","same_transfer_as":"8231c805a3f9d34b","explanation":"APNIC's transfer log records a transfer from VASSOS, JON  (APNIC) to ORG-BSL34-RIPE (RIPE NCC) on 2023-08-22 00:34 UTC: it left APNIC for the RIPE NCC. It is not a new allocation and is not offered to APNIC applicants.","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 2023-08-22 00:34 UTC, VASSOS, JON  (APNIC) to ORG-BSL34-RIPE (RIPE NCC); resources moved: 121.54.184.0/22"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2023/delegated-apnic-extended-20230822.gz","retrieved_at":"2026-10-13T00:47:24+00:00","summary":"APNIC delegated statistics 2023-08-22, before the change: assigned (dated 2016-07-11)"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2023/delegated-apnic-extended-20230823.gz","retrieved_at":"2026-10-13T00:47:27+00:00","summary":"APNIC delegated statistics 2023-08-23, after the change: not listed"}]},{"event_id":"8231c805a3f9d34b","registry":"RIPE NCC","report_date":"2023-08-21","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"121.54.184.0/22","start":"121.54.184.0","end":"121.54.187.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into the RIPE NCC","confidence":"CONFIRMED","source_rir":"APNIC","recipient_rir":"RIPE NCC","source_organization":null,"recipient_organization":"BidFX Systems Ltd.","inventory_effect":"Transferred into RIPE NCC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:49:38+00:00","page":"https://rirtracker.com/ip/121.54.184.0-121.54.187.255/#e-8231c805a3f9d34b","report_page":"https://rirtracker.com/ripe/reports/2023-08-21/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/121.54.184.0-121.54.187.255.json","observed":"Transfer: (no name) (APNIC) to BidFX Systems Ltd. (RIPE NCC)","same_transfer_as":"5458b7806e20c693","explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (APNIC) to BidFX Systems Ltd. (RIPE NCC) on 2023-08-21 19:00 UTC: it came to the RIPE NCC from APNIC. It was already issued by another registry, so this is not a new issuance.","evidence":[{"type":"transfer","url":"https://ftp.ripe.net/pub/stats/ripencc/transfers/transfers_latest.json","retrieved_at":"2026-10-13T21:49:37+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2023-08-21 19:00 UTC, (no name) (APNIC) to BidFX Systems Ltd. (RIPE NCC); resources moved: 121.54.184.0/22"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2023/delegated-ripencc-extended-20230820.bz2","retrieved_at":"2026-10-13T00:09:59+00:00","summary":"RIPE NCC delegated statistics 2023-08-20 (produced 2023-08-20T21:59:59+00:00), before the change: not listed"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2023/delegated-ripencc-extended-20230821.bz2","retrieved_at":"2026-10-13T00:10:02+00:00","summary":"RIPE NCC delegated statistics 2023-08-21 (produced 2023-08-21T21:59:59+00:00), after the change: allocated (dated 2017-07-11)"}]},{"event_id":"aa02cacc14da9432","registry":"APNIC","report_date":"2016-07-11","source":"statistics","raw_action":"ADDED","raw_line":null,"resource_type":"ipv4","resource":"121.54.184.0/22","start":"121.54.184.0","end":"121.54.187.255","classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from APNIC-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:04:08+00:00","page":"https://rirtracker.com/ip/121.54.184.0-121.54.187.255/#e-aa02cacc14da9432","report_page":"https://rirtracker.com/apnic/reports/2016-07-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/121.54.184.0-121.54.187.255.json","observed":"121.54.184.0/22 available on 2016-07-11, assigned on 2016-07-12","explanation":"No transfer record matches. APNIC's statistics show it available on 2016-07-11 and assigned (dated 2016-07-11) on 2016-07-12. The tracker saw this range released from hold on 2016-06-22 (121.54.184.0/21), so it appears to have been issued again from APNIC's pool.","evidence":[{"type":"statistics_diff","url":"https://ftp.apnic.net/stats/apnic/2016/delegated-apnic-extended-20160712.gz","retrieved_at":"2026-10-12T21:43:11+00:00","summary":"Found by comparing APNIC's daily statistics: 121.54.184.0/22 available on 2016-07-11, assigned on 2016-07-12"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2016/delegated-apnic-extended-20160711.gz","retrieved_at":"2026-10-12T21:43:08+00:00","summary":"APNIC delegated statistics 2016-07-11, before the change: available"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2016/delegated-apnic-extended-20160712.gz","retrieved_at":"2026-10-12T21:43:11+00:00","summary":"APNIC delegated statistics 2016-07-12, after the change: assigned (dated 2016-07-11)"}]}],"classification_history":{"5458b7806e20c693":[{"raw_change_id":40048,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:37:46+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from VASSOS, JON  (APNIC) to ORG-BSL34-RIPE (RIPE NCC) on 2023-08-22 00:34 UTC: it left APNIC for the RIPE NCC. It is not a new allocation and is not offered to APNIC applicants."},{"raw_change_id":40048,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:02:02+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from VASSOS, JON  (APNIC) to ORG-BSL34-RIPE (RIPE NCC) on 2023-08-22 00:34 UTC: it left APNIC for the RIPE NCC. It is not a new allocation and is not offered to APNIC applicants."},{"raw_change_id":40048,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:12+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from VASSOS, JON  (APNIC) to ORG-BSL34-RIPE (RIPE NCC) on 2023-08-22 00:34 UTC: it left APNIC for the RIPE NCC. It is not a new allocation and is not offered to APNIC applicants."},{"raw_change_id":40048,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:48+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from VASSOS, JON  (APNIC) to ORG-BSL34-RIPE (RIPE NCC) on 2023-08-22 00:34 UTC: it left APNIC for the RIPE NCC. It is not a new allocation and is not offered to APNIC applicants."}],"8231c805a3f9d34b":[{"raw_change_id":98058,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:01:50+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (APNIC) to BidFX Systems Ltd. (RIPE NCC) on 2023-08-21 19:00 UTC: it came to the RIPE NCC from APNIC. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":98058,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:04:22+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (APNIC) to BidFX Systems Ltd. (RIPE NCC) on 2023-08-21 19:00 UTC: it came to the RIPE NCC from APNIC. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":98058,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:46:48+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (APNIC) to BidFX Systems Ltd. (RIPE NCC) on 2023-08-21 19:00 UTC: it came to the RIPE NCC from APNIC. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":98058,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:49:38+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (APNIC) to BidFX Systems Ltd. (RIPE NCC) on 2023-08-21 19:00 UTC: it came to the RIPE NCC from APNIC. It was already issued by another registry, so this is not a new issuance."}],"aa02cacc14da9432":[{"raw_change_id":351545,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:20:18+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2016-07-11 and assigned (dated 2016-07-11) on 2016-07-12. The tracker saw this range released from hold on 2016-06-22 (121.54.184.0/21), so it appears to have been issued again from APNIC's pool."},{"raw_change_id":351545,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:16:19+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2016-07-11 and assigned (dated 2016-07-11) on 2016-07-12. The tracker saw this range released from hold on 2016-06-22 (121.54.184.0/21), so it appears to have been issued again from APNIC's pool."},{"raw_change_id":351545,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:59:54+00:00","current":0,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2016-07-11 and assigned (dated 2016-07-11) on 2016-07-12. The tracker saw this range released from hold on 2016-06-22 (121.54.184.0/21), so it appears to have been issued again from APNIC's pool."},{"raw_change_id":351545,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:04:08+00:00","current":1,"public_explanation":"No transfer record matches. APNIC's statistics show it available on 2016-07-11 and assigned (dated 2016-07-11) on 2016-07-12. The tracker saw this range released from hold on 2016-06-22 (121.54.184.0/21), so it appears to have been issued again from APNIC's pool."}]},"arin_statistics_now":{"status":"not listed"}}