{"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":"199.101.78.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/199.101.78.0-199.101.78.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2022-12-12)"},"current_holder":{"rir":"ARIN","org":"SKYWEST AIRLINES, INC.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":29820,"date":"2022-12-12T19:12:45Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ExpressJet Airlines, LLC","recipient_org":"SKYWEST AIRLINES, INC.","range":"199.101.78.0/24","log":"ARIN"},{"id":19469,"date":"2019-12-09T21:10:49Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"SKYWEST AIRLINES, INC.","recipient_org":"United Express","range":"199.101.78.0/24","log":"ARIN"}],"events":[{"event_id":"148e2fc42c47105b","registry":"ARIN","report_date":"2022-12-12","source":"arin_issued","raw_action":"ADD","raw_line":"Add 199.101.78.0-199.101.78.255","resource_type":"ipv4","resource":"199.101.78.0/24","start":"199.101.78.0","end":"199.101.78.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"ExpressJet Airlines, LLC","recipient_organization":"SKYWEST AIRLINES, INC.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:33+00:00","page":"https://rirtracker.com/ip/199.101.78.0-199.101.78.255/#e-148e2fc42c47105b","report_page":"https://rirtracker.com/arin/reports/2022-12-12/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.101.78.0-199.101.78.255.json","explanation":"ARIN's transfer log records a transfer from ExpressJet Airlines, LLC (ARIN) to SKYWEST AIRLINES, INC. (ARIN) on 2022-12-12 19:12 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2022-December/005113.html","retrieved_at":"2026-10-12T18:42:00+00:00","summary":"ARIN-Issued report for 2022-12-12: \"Add 199.101.78.0-199.101.78.255\""},{"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 2022-12-12 19:12 UTC, ExpressJet Airlines, LLC (ARIN) to SKYWEST AIRLINES, INC. (ARIN); resources moved: 199.101.78.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20221211.gz","retrieved_at":"2026-10-12T23:12:24+00:00","summary":"ARIN delegated statistics 2022-12-11 (produced 2022-12-11T14:00:10+00:00), before the report: allocated (dated 2019-12-09)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20221213.gz","retrieved_at":"2026-10-12T23:12:29+00:00","summary":"ARIN delegated statistics 2022-12-13 (produced 2022-12-13T14:00:11+00:00), after the report: allocated (dated 2022-12-12)"}]},{"event_id":"2581eb9aea241f5b","registry":"ARIN","report_date":"2019-12-09","source":"arin_issued","raw_action":"ADD","raw_line":"Add 199.101.78.0-199.101.78.255","resource_type":"ipv4","resource":"199.101.78.0/24","start":"199.101.78.0","end":"199.101.78.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"SKYWEST AIRLINES, INC.","recipient_organization":"United Express","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:39+00:00","page":"https://rirtracker.com/ip/199.101.78.0-199.101.78.255/#e-2581eb9aea241f5b","report_page":"https://rirtracker.com/arin/reports/2019-12-09/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.101.78.0-199.101.78.255.json","piece_of":{"resource":"199.101.76.0/22","page":"https://rirtracker.com/ip/199.101.76.0-199.101.79.255/"},"explanation":"ARIN's transfer log records a transfer from SKYWEST AIRLINES, INC. (ARIN) to United Express (ARIN) on 2019-12-09 21:10 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2019-December/004015.html","retrieved_at":"2026-10-12T18:40:43+00:00","summary":"ARIN-Issued report for 2019-12-09: \"Add 199.101.78.0-199.101.78.255\""},{"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 2019-12-09 21:10 UTC, SKYWEST AIRLINES, INC. (ARIN) to United Express (ARIN); resources moved: 199.101.78.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20191208.gz","retrieved_at":"2026-10-12T22:15:40+00:00","summary":"ARIN delegated statistics 2019-12-08 (produced 2019-12-08T15:00:13+00:00), before the report: assigned (dated 2012-02-13)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2019/delegated-arin-extended-20191210.gz","retrieved_at":"2026-10-12T22:15:45+00:00","summary":"ARIN delegated statistics 2019-12-10 (produced 2019-12-10T15:00:14+00:00), after the report: assigned (dated 2019-12-09)"}]}],"classification_history":{"148e2fc42c47105b":[{"raw_change_id":179375,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:57:39+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from ExpressJet Airlines, LLC (ARIN) to SKYWEST AIRLINES, INC. (ARIN) on 2022-12-12 19:12 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":179375,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:20+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from ExpressJet Airlines, LLC (ARIN) to SKYWEST AIRLINES, INC. (ARIN) on 2022-12-12 19:12 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":179375,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:09+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from ExpressJet Airlines, LLC (ARIN) to SKYWEST AIRLINES, INC. (ARIN) on 2022-12-12 19:12 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":179375,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:53:33+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from ExpressJet Airlines, LLC (ARIN) to SKYWEST AIRLINES, INC. (ARIN) on 2022-12-12 19:12 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"2581eb9aea241f5b":[{"raw_change_id":162443,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:46:19+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from SKYWEST AIRLINES, INC. (ARIN) to United Express (ARIN) on 2019-12-09 21:10 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":162443,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:06:40+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from SKYWEST AIRLINES, INC. (ARIN) to United Express (ARIN) on 2019-12-09 21:10 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":162443,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:49:24+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from SKYWEST AIRLINES, INC. (ARIN) to United Express (ARIN) on 2019-12-09 21:10 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":162443,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:52:39+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from SKYWEST AIRLINES, INC. (ARIN) to United Express (ARIN) on 2019-12-09 21:10 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2022-12-12)"}}