{"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":"121.91.192.0 - 121.91.198.255","resource_type":"ipv4","page":"https://rirtracker.com/ip/121.91.192.0-121.91.198.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2025-01-13)"},"current_holder":{"rir":"ARIN","org":"Amazon.com, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":129922,"date":"2025-01-13T23:46:55Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"ARIN","source_org":"Iseek Communications Pty Ltd","recipient_org":"AMAZO-4","range":"121.91.192.0/22","log":"APNIC"},{"id":38428,"date":"2025-01-13T19:50:58Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"ARIN","source_org":"iseek Communications Pty Ltd","recipient_org":"Amazon.com, Inc.","range":"121.91.192.0/22","log":"ARIN"},{"id":38477,"date":"2025-01-13T19:50:58Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"ARIN","source_org":"iseek Communications Pty Ltd","recipient_org":"Amazon.com, Inc.","range":"121.91.196.0/23","log":"ARIN"},{"id":38457,"date":"2025-01-13T19:50:58Z","type":"RESOURCE_TRANSFER","source_rir":"APNIC","recipient_rir":"ARIN","source_org":"iseek Communications Pty Ltd","recipient_org":"Amazon.com, Inc.","range":"121.91.198.0/24","log":"ARIN"}],"events":[{"event_id":"8b3931316d535f80","registry":"ARIN","report_date":"2025-01-13","source":"arin_issued","raw_action":"ADD","raw_line":"Add 121.91.192.0-121.91.198.255","resource_type":"ipv4","resource":"121.91.192.0 - 121.91.198.255","start":"121.91.192.0","end":"121.91.198.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into ARIN","confidence":"CONFIRMED","source_rir":"APNIC","recipient_rir":"ARIN","source_organization":"iseek Communications Pty Ltd","recipient_organization":"Amazon.com, Inc.","inventory_effect":"Transferred into ARIN administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:19+00:00","page":"https://rirtracker.com/ip/121.91.192.0-121.91.198.255/#e-8b3931316d535f80","report_page":"https://rirtracker.com/arin/reports/2025-01-13/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/121.91.192.0-121.91.198.255.json","same_transfer_as":"aac6303b2402c829","explanation":"ARIN's transfer log records a transfer from iseek Communications Pty Ltd (APNIC) to Amazon.com, Inc. (ARIN), recorded as 3 transfer records that together cover exactly this range, on 2025-01-13 19:50 UTC: it came to ARIN from APNIC. It was already issued by another registry, so this is not a new issuance.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2025-January/005875.html","retrieved_at":"2026-10-12T18:42:52+00:00","summary":"ARIN-Issued report for 2025-01-13: \"Add 121.91.192.0-121.91.198.255\""},{"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 2025-01-13 19:50 UTC, iseek Communications Pty Ltd (APNIC) to Amazon.com, Inc. (ARIN); resources moved: 121.91.192.0/22"},{"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 2025-01-13 19:50 UTC, iseek Communications Pty Ltd (APNIC) to Amazon.com, Inc. (ARIN); resources moved: 121.91.196.0/23"},{"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 2025-01-13 19:50 UTC, iseek Communications Pty Ltd (APNIC) to Amazon.com, Inc. (ARIN); resources moved: 121.91.198.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250112.gz","retrieved_at":"2026-10-12T23:53:04+00:00","summary":"ARIN delegated statistics 2025-01-12 (produced 2025-01-12T14:01:06+00:00), before the report: not listed"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2025/delegated-arin-extended-20250114.gz","retrieved_at":"2026-10-12T23:53:09+00:00","summary":"ARIN delegated statistics 2025-01-14 (produced 2025-01-14T14:01:07+00:00), after the report: allocated (dated 2025-01-13)"}]}],"classification_history":{"8b3931316d535f80":[{"raw_change_id":191572,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T04:04:54+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from iseek Communications Pty Ltd (APNIC) to Amazon.com, Inc. (ARIN), recorded as 3 transfer records that together cover exactly this range, on 2025-01-13 19:50 UTC: it came to ARIN from APNIC. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":191572,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:54+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from iseek Communications Pty Ltd (APNIC) to Amazon.com, Inc. (ARIN), recorded as 3 transfer records that together cover exactly this range, on 2025-01-13 19:50 UTC: it came to ARIN from APNIC. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":191572,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:47+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from iseek Communications Pty Ltd (APNIC) to Amazon.com, Inc. (ARIN), recorded as 3 transfer records that together cover exactly this range, on 2025-01-13 19:50 UTC: it came to ARIN from APNIC. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":191572,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:19+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from iseek Communications Pty Ltd (APNIC) to Amazon.com, Inc. (ARIN), recorded as 3 transfer records that together cover exactly this range, on 2025-01-13 19:50 UTC: it came to ARIN from APNIC. It was already issued by another registry, so this is not a new issuance."}]},"arin_statistics_now":{"status":"allocated (dated 2025-01-13)"}}