{"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":"158.120.48.0/20","resource_type":"ipv4","page":"https://rirtracker.com/ip/158.120.48.0-158.120.63.255/","statistics_now":{"registry":"RIPE NCC","status":"assigned (dated 1992-02-28)"},"current_holder":{"rir":"RIPE NCC","org":"Aviation RE LLC","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":95766,"date":"2023-05-11T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"Aviation RE LLC","range":"158.120.48.0/20","log":"RIPE NCC"},{"id":31918,"date":"2023-05-11T14:32:48Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"City of Colorado Springs","recipient_org":"Aviation RE LLC","range":"158.120.48.0/20","log":"ARIN"}],"events":[{"event_id":"7cbb11699fe8cb74","registry":"ARIN","report_date":"2023-05-11","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"158.120.48.0/20","start":"158.120.48.0","end":"158.120.63.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"City of Colorado Springs","recipient_organization":"Aviation RE LLC","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":"2026-10-14T00:10:37+00:00","page":"https://rirtracker.com/ip/158.120.48.0-158.120.63.255/#e-7cbb11699fe8cb74","report_page":"https://rirtracker.com/arin/reports/2023-05-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/158.120.48.0-158.120.63.255.json","observed":"158.120.48.0/20 allocated on 2023-05-11, not listed on 2023-05-12","same_transfer_as":"949713433560289f","explanation":"ARIN's transfer log records a transfer from City of Colorado Springs (ARIN) to Aviation RE LLC (RIPE NCC) on 2023-05-11 14:32 UTC: it left ARIN for the RIPE NCC. 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/2023/delegated-arin-extended-20230512.gz","retrieved_at":"2026-10-12T23:20:28+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 158.120.48.0/20 allocated on 2023-05-11, not listed on 2023-05-12"},{"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 2023-05-11 14:32 UTC, City of Colorado Springs (ARIN) to Aviation RE LLC (RIPE NCC); resources moved: 158.120.48.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230510.gz","retrieved_at":"2026-10-12T23:20:23+00:00","summary":"ARIN delegated statistics 2023-05-10 (produced 2023-05-10T13:00:11+00:00), before the report: allocated (dated 1992-02-28)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230512.gz","retrieved_at":"2026-10-12T23:20:28+00:00","summary":"ARIN delegated statistics 2023-05-12 (produced 2023-05-12T13:00:10+00:00), after the report: not listed"}]},{"event_id":"949713433560289f","registry":"RIPE NCC","report_date":"2023-05-11","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"158.120.48.0/20","start":"158.120.48.0","end":"158.120.63.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into the RIPE NCC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":null,"recipient_organization":"Aviation RE LLC","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":"2026-10-13T23:49:32+00:00","page":"https://rirtracker.com/ip/158.120.48.0-158.120.63.255/#e-949713433560289f","report_page":"https://rirtracker.com/ripe/reports/2023-05-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/158.120.48.0-158.120.63.255.json","observed":"Transfer: (no name) (ARIN) to Aviation RE LLC (RIPE NCC)","same_transfer_as":"7cbb11699fe8cb74","explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Aviation RE LLC (RIPE NCC) on 2023-05-11 19:00 UTC: it came to the RIPE NCC from ARIN. 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 2023-05-11 19:00 UTC, (no name) (ARIN) to Aviation RE LLC (RIPE NCC); resources moved: 158.120.48.0/20"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2023/delegated-ripencc-extended-20230510.bz2","retrieved_at":"2026-10-13T00:02:18+00:00","summary":"RIPE NCC delegated statistics 2023-05-10 (produced 2023-05-10T21:59:59+00:00), before the change: not listed"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2023/delegated-ripencc-extended-20230511.bz2","retrieved_at":"2026-10-13T00:02:21+00:00","summary":"RIPE NCC delegated statistics 2023-05-11 (produced 2023-05-11T21:59:59+00:00), after the change: assigned (dated 1992-02-28)"}]}],"classification_history":{"7cbb11699fe8cb74":[{"raw_change_id":446981,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T05:59:35+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from City of Colorado Springs (ARIN) to Aviation RE LLC (RIPE NCC) on 2023-05-11 14:32 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":446981,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:21:40+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from City of Colorado Springs (ARIN) to Aviation RE LLC (RIPE NCC) on 2023-05-11 14:32 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":446981,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T15:05:40+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from City of Colorado Springs (ARIN) to Aviation RE LLC (RIPE NCC) on 2023-05-11 14:32 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":446981,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:10:37+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from City of Colorado Springs (ARIN) to Aviation RE LLC (RIPE NCC) on 2023-05-11 14:32 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."}],"949713433560289f":[{"raw_change_id":96227,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:01:04+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Aviation RE LLC (RIPE NCC) on 2023-05-11 19:00 UTC: it came to the RIPE NCC from ARIN. 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It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":96227,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:49:32+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Aviation RE LLC (RIPE NCC) on 2023-05-11 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."}]},"arin_statistics_now":{"status":"not listed"}}