{"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":"192.208.158.0/23","resource_type":"ipv4","page":"https://rirtracker.com/ip/192.208.158.0-192.208.159.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2015-04-24)"},"current_holder":{"rir":"ARIN","org":"Nvidia Corporation","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":33474,"date":"2023-11-01T17:45:44Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Cumulus Networks, Inc.","recipient_org":"Nvidia Corporation","range":"192.208.158.0/23","log":"ARIN"}],"events":[{"event_id":"6d91f9ac70683b8c","registry":"ARIN","report_date":"2023-11-01","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"192.208.158.0/23","start":"192.208.158.0","end":"192.208.159.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Cumulus Networks, Inc.","recipient_organization":"Nvidia Corporation","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:11+00:00","page":"https://rirtracker.com/ip/192.208.158.0-192.208.159.255/#e-6d91f9ac70683b8c","report_page":"https://rirtracker.com/arin/reports/2023-11-01/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/192.208.158.0-192.208.159.255.json","observed":"Merger/acquisition: Cumulus Networks, Inc. (ARIN) to Nvidia Corporation (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Cumulus Networks, Inc. (ARIN) to Nvidia Corporation (ARIN) on 2023-11-01 17:45 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.","evidence":[{"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: MERGER_ACQUISITION on 2023-11-01 17:45 UTC, Cumulus Networks, Inc. (ARIN) to Nvidia Corporation (ARIN); resources moved: 192.208.158.0/23"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20231031.gz","retrieved_at":"2026-10-12T23:29:28+00:00","summary":"ARIN delegated statistics 2023-10-31 (produced 2023-10-31T13:00:34+00:00), before the report: allocated (dated 2015-04-24)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20231102.gz","retrieved_at":"2026-10-12T23:29:33+00:00","summary":"ARIN delegated statistics 2023-11-02 (produced 2023-11-02T13:00:33+00:00), after the report: allocated (dated 2015-04-24)"}]},{"event_id":"bdb79711219316ae","registry":"ARIN","report_date":"2023-08-11","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"192.208.158.0/23","start":"192.208.158.0","end":"192.208.159.255","classification":"REMOVED_REASON_UNKNOWN","classification_label":"Removed (return, revocation or reclamation not publicly distinguishable)","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Possible future reissue candidate after hold","inventory_effect_code":"HOLD_CANDIDATE","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:10:58+00:00","page":"https://rirtracker.com/ip/192.208.158.0-192.208.159.255/#e-bdb79711219316ae","report_page":"https://rirtracker.com/arin/reports/2023-08-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/192.208.158.0-192.208.159.255.json","observed":"192.208.158.0/23 allocated on 2023-08-11, reserved on 2023-08-12","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_days":60,"estimated_hold_end":"2023-10-10","availability_statement":"Possible reissue candidate after this date; not confirmed available"},"explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2015-04-24) on 2023-08-10 and reserved on 2023-08-12. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2023-10-10. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230812.gz","retrieved_at":"2026-10-12T23:25:24+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 192.208.158.0/23 allocated on 2023-08-11, reserved on 2023-08-12"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230810.gz","retrieved_at":"2026-10-12T23:25:09+00:00","summary":"ARIN delegated statistics 2023-08-10 (produced 2023-08-10T13:00:13+00:00), before the report: allocated (dated 2015-04-24)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230812.gz","retrieved_at":"2026-10-12T23:25:24+00:00","summary":"ARIN delegated statistics 2023-08-12 (produced 2023-08-12T13:00:12+00:00), after the report: reserved"}]},{"event_id":"e892c48af0b5b576","registry":"ARIN","report_date":"2015-04-24","source":"arin_issued","raw_action":"ADD","raw_line":"Add 192.208.158.0-192.208.159.255","resource_type":"ipv4","resource":"192.208.158.0/23","start":"192.208.158.0","end":"192.208.159.255","classification":"APPARENT_NEW_ISSUANCE","classification_label":"Apparent new issuance","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from ARIN-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:22+00:00","page":"https://rirtracker.com/ip/192.208.158.0-192.208.159.255/#e-e892c48af0b5b576","report_page":"https://rirtracker.com/arin/reports/2015-04-24/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/192.208.158.0-192.208.159.255.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2015-04-23 and assigned (dated 2015-04-24) on 2015-04-25. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2015-April/002325.html","retrieved_at":"2026-10-12T18:38:45+00:00","summary":"ARIN-Issued report for 2015-04-24: \"Add 192.208.158.0-192.208.159.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150423.gz","retrieved_at":"2026-10-12T20:51:34+00:00","summary":"ARIN delegated statistics 2015-04-23 (produced 2015-04-23T05:04:15+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150425.gz","retrieved_at":"2026-10-12T20:51:39+00:00","summary":"ARIN delegated statistics 2015-04-25 (produced 2015-04-25T05:04:07+00:00), after the report: assigned (dated 2015-04-24)"}]},{"event_id":"0fbec74b1148853d","registry":"ARIN","report_date":"2015-04-24","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 192.208.158.0-192.208.159.255","resource_type":"ipv4","resource":"192.208.158.0/23","start":"192.208.158.0","end":"192.208.159.255","classification":"POOL_RECORD_CHANGE","classification_label":"Change to ARIN's own pool record","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Part of the issuance reported the same day","inventory_effect_code":"PAIRED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:22+00:00","page":"https://rirtracker.com/ip/192.208.158.0-192.208.159.255/#e-0fbec74b1148853d","report_page":"https://rirtracker.com/arin/reports/2015-04-24/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/192.208.158.0-192.208.159.255.json","explanation":"ARIN's statistics show it available on 2015-04-23 and assigned (dated 2015-04-24) on 2015-04-25. ARIN removed its own pool record for this range as part of issuing it: the same report adds 192.208.158.0-192.208.159.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2015-April/002325.html","retrieved_at":"2026-10-12T18:38:45+00:00","summary":"ARIN-Issued report for 2015-04-24: \"Remove 192.208.158.0-192.208.159.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150423.gz","retrieved_at":"2026-10-12T20:51:34+00:00","summary":"ARIN delegated statistics 2015-04-23 (produced 2015-04-23T05:04:15+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150425.gz","retrieved_at":"2026-10-12T20:51:39+00:00","summary":"ARIN delegated statistics 2015-04-25 (produced 2015-04-25T05:04:07+00:00), after the report: assigned (dated 2015-04-24)"}]}],"classification_history":{"6d91f9ac70683b8c":[{"raw_change_id":569442,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:11+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Cumulus Networks, Inc. (ARIN) to Nvidia Corporation (ARIN) on 2023-11-01 17:45 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it."}],"bdb79711219316ae":[{"raw_change_id":452579,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T06:02:21+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2015-04-24) on 2023-08-10 and reserved on 2023-08-12. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2023-10-10. This does not confirm availability."},{"raw_change_id":452579,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:21:57+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2015-04-24) on 2023-08-10 and reserved on 2023-08-12. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2023-10-10. This does not confirm availability."},{"raw_change_id":452579,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:05:59+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2015-04-24) on 2023-08-10 and reserved on 2023-08-12. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2023-10-10. This does not confirm availability."},{"raw_change_id":452579,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:10:58+00:00","current":1,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 2015-04-24) on 2023-08-10 and reserved on 2023-08-12. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2023-10-10. This does not confirm availability."}],"e892c48af0b5b576":[{"raw_change_id":137154,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:30:46+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-04-23 and assigned (dated 2015-04-24) on 2015-04-25. The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":137154,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:42+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-04-23 and assigned (dated 2015-04-24) on 2015-04-25. The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":137154,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:19+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-04-23 and assigned (dated 2015-04-24) on 2015-04-25. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":137154,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:22+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2015-04-23 and assigned (dated 2015-04-24) on 2015-04-25. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}],"0fbec74b1148853d":[{"raw_change_id":137144,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:30:45+00:00","current":0,"public_explanation":"ARIN's statistics show it available on 2015-04-23 and assigned (dated 2015-04-24) on 2015-04-25. ARIN removed its own pool record for this range as part of issuing it: the same report adds 192.208.158.0-192.208.159.255. The issuance is explained on that line."},{"raw_change_id":137144,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:42+00:00","current":0,"public_explanation":"ARIN's statistics show it available on 2015-04-23 and assigned (dated 2015-04-24) on 2015-04-25. ARIN removed its own pool record for this range as part of issuing it: the same report adds 192.208.158.0-192.208.159.255. The issuance is explained on that line."},{"raw_change_id":137144,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:19+00:00","current":0,"public_explanation":"ARIN's statistics show it available on 2015-04-23 and assigned (dated 2015-04-24) on 2015-04-25. ARIN removed its own pool record for this range as part of issuing it: the same report adds 192.208.158.0-192.208.159.255. The issuance is explained on that line."},{"raw_change_id":137144,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:22+00:00","current":1,"public_explanation":"ARIN's statistics show it available on 2015-04-23 and assigned (dated 2015-04-24) on 2015-04-25. ARIN removed its own pool record for this range as part of issuing it: the same report adds 192.208.158.0-192.208.159.255. The issuance is explained on that line."}]},"arin_statistics_now":{"status":"allocated (dated 2015-04-24)"}}