{"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":"31.1.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/31.1.0.0-31.1.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2024-04-25)"},"current_holder":{"rir":"ARIN","org":null,"how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":105098,"date":"2024-04-25T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"RIPE NCC","recipient_rir":"ARIN","source_org":"Polkomtel Sp. z o.o.","recipient_org":null,"range":"31.1.0.0/16","log":"RIPE NCC"},{"id":35325,"date":"2024-04-25T13:58:24Z","type":"RESOURCE_TRANSFER","source_rir":"RIPE NCC","recipient_rir":"ARIN","source_org":"Polkomtel Sp. z o.o.","recipient_org":"Amazon.com, Inc.","range":"31.1.0.0/16","log":"ARIN"}],"events":[{"event_id":"83d5a95f8c90d0d8","registry":"RIPE NCC","report_date":"2024-04-25","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"31.1.0.0/16","start":"31.1.0.0","end":"31.1.255.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of the RIPE NCC","confidence":"CONFIRMED","source_rir":"RIPE NCC","recipient_rir":"ARIN","source_organization":"Polkomtel Sp. z o.o.","recipient_organization":null,"inventory_effect":"Transferred out of RIPE NCC administration; not offered to RIPE NCC applicants","inventory_effect_code":"TRANSFER_OUT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:01+00:00","page":"https://rirtracker.com/ip/31.1.0.0-31.1.255.255/#e-83d5a95f8c90d0d8","report_page":"https://rirtracker.com/ripe/reports/2024-04-25/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/31.1.0.0-31.1.255.255.json","observed":"Transfer: Polkomtel Sp. z o.o. (RIPE NCC) to (no name) (ARIN)","piece_of":{"resource":"31.0.0.0/15","page":"https://rirtracker.com/ip/31.0.0.0-31.1.255.255/"},"same_transfer_as":"1e7c2394c40c7374","explanation":"The RIPE NCC's transfer log records a transfer from Polkomtel Sp. z o.o. (RIPE NCC) to an unnamed organization (ARIN) on 2024-04-25 19:00 UTC: it left the RIPE NCC for ARIN. It is not a new allocation and is not offered to RIPE NCC applicants.","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 2024-04-25 19:00 UTC, Polkomtel Sp. z o.o. (RIPE NCC) to (no name) (ARIN); resources moved: 31.1.0.0/16"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2024/delegated-ripencc-extended-20240424.bz2","retrieved_at":"2026-10-13T00:28:59+00:00","summary":"RIPE NCC delegated statistics 2024-04-24 (produced 2024-04-24T21:59:59+00:00), before the change: allocated (dated 2011-04-05)"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2024/delegated-ripencc-extended-20240425.bz2","retrieved_at":"2026-10-13T00:29:02+00:00","summary":"RIPE NCC delegated statistics 2024-04-25 (produced 2024-04-25T21:59:59+00:00), after the change: not listed"}]}],"classification_history":{"83d5a95f8c90d0d8":[{"raw_change_id":105683,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:05:08+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from Polkomtel Sp. z o.o. (RIPE NCC) to an unnamed organization (ARIN) on 2024-04-25 19:00 UTC: it left the RIPE NCC for ARIN. It is not a new allocation and is not offered to RIPE NCC applicants."},{"raw_change_id":105683,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:04:40+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from Polkomtel Sp. z o.o. (RIPE NCC) to an unnamed organization (ARIN) on 2024-04-25 19:00 UTC: it left the RIPE NCC for ARIN. It is not a new allocation and is not offered to RIPE NCC applicants."},{"raw_change_id":105683,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:08+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from Polkomtel Sp. z o.o. (RIPE NCC) to an unnamed organization (ARIN) on 2024-04-25 19:00 UTC: it left the RIPE NCC for ARIN. It is not a new allocation and is not offered to RIPE NCC applicants."},{"raw_change_id":105683,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:01+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from Polkomtel Sp. z o.o. (RIPE NCC) to an unnamed organization (ARIN) on 2024-04-25 19:00 UTC: it left the RIPE NCC for ARIN. It is not a new allocation and is not offered to RIPE NCC applicants."}]},"arin_statistics_now":{"status":"allocated (dated 2024-04-25)"}}