{"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":"104.204.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/104.204.0.0-104.204.255.255/","statistics_now":{"registry":"ARIN","status":"allocated (24 records, dated 2025-05-30 to 2026-08-06) (only part of the range)"},"current_holder":{"rir":null,"org":null,"how":null},"rdap_snapshots":[],"transfers":[{"id":45136,"date":"2026-08-17T14:19:10Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"ACN Communication Services, LLC","recipient_org":"IX Telecom","range":"104.204.48.0/21","log":"ARIN"},{"id":131803,"date":"2026-08-17T05:35:09Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"ACNCO","recipient_org":"IX Telecom SDN. BHD.","range":"104.204.48.0/21","log":"APNIC"},{"id":45068,"date":"2026-08-06T19:28:31Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Adaptix Networks LLC","range":"104.204.60.0/22","log":"ARIN"},{"id":44598,"date":"2026-07-09T18:49:54Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Hippo Technologies LLC","range":"104.204.32.0/20","log":"ARIN"},{"id":44550,"date":"2026-07-06T11:42:53Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Nebius Inc.","range":"104.204.0.0/19","log":"ARIN"},{"id":44410,"date":"2026-06-22T22:14:12Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Redoubt Networks","range":"104.204.64.0/19","log":"ARIN"},{"id":44332,"date":"2026-06-16T22:18:27Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"IdeaTek Telcom, LLC","range":"104.204.56.0/22","log":"ARIN"},{"id":42234,"date":"2025-12-12T19:29:58Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"INTERNET COMMUNICATIONS INC.","range":"104.204.128.0/21","log":"ARIN"},{"id":42069,"date":"2025-11-19T13:35:42Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Aspire Broadband, LLC","range":"104.204.160.0/20","log":"ARIN"},{"id":41228,"date":"2025-09-08T19:13:39Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"CloudMesh Labs LLC","range":"104.204.136.0/22","log":"ARIN"},{"id":41212,"date":"2025-09-03T18:40:28Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Allnodes Inc","range":"104.204.140.0/22","log":"ARIN"},{"id":41160,"date":"2025-08-25T18:05:21Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"NANA NET, LLC","range":"104.204.192.0/21","log":"ARIN"},{"id":114205,"date":"2025-07-21T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"cleardocks LLC","range":"104.204.200.0/21","log":"RIPE NCC"},{"id":40942,"date":"2025-07-21T14:15:45Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"ACN Communication Services, LLC","recipient_org":"Cleardocks LLC","range":"104.204.200.0/21","log":"ARIN"},{"id":40876,"date":"2025-07-09T10:46:22Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Nebius Inc.","range":"104.204.96.0/19","log":"ARIN"},{"id":40842,"date":"2025-07-02T10:51:40Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Great Lakes Energy Connections Inc.","range":"104.204.208.0/21","log":"ARIN"},{"id":40843,"date":"2025-07-02T10:51:40Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Great Lakes Energy Connections Inc.","range":"104.204.248.0/23","log":"ARIN"},{"id":40840,"date":"2025-07-01T19:33:53Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Fortinet Inc.","range":"104.204.255.0/24","log":"ARIN"},{"id":40823,"date":"2025-06-26T15:21:10Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"WCCTA","range":"104.204.236.0/22","log":"ARIN"},{"id":40648,"date":"2025-06-20T17:46:51Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Pima Community College","range":"104.204.240.0/22","log":"ARIN"},{"id":40634,"date":"2025-06-20T10:53:33Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"AME Hosting LLC","range":"104.204.216.0/21","log":"ARIN"},{"id":40633,"date":"2025-06-20T10:49:26Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Milbank LLP","range":"104.204.254.0/24","log":"ARIN"},{"id":40626,"date":"2025-06-17T18:34:35Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Fusion Voice and Data Corp.","range":"104.204.224.0/21","log":"ARIN"},{"id":113483,"date":"2025-06-12T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"Batobajo Holding GmbH","range":"104.204.244.0/22","log":"RIPE NCC"},{"id":40601,"date":"2025-06-12T14:08:31Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"ACN Communication Services, LLC","recipient_org":"  Batobajo Holding GmbH","range":"104.204.244.0/22","log":"ARIN"},{"id":40576,"date":"2025-06-09T19:19:13Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"SpaceX Services, Inc.","range":"104.204.144.0/20","log":"ARIN"},{"id":40555,"date":"2025-06-05T18:16:06Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"ZeroOutages","range":"104.204.250.0/23","log":"ARIN"},{"id":40552,"date":"2025-06-05T10:26:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"bitprojects","range":"104.204.252.0/23","log":"ARIN"},{"id":40548,"date":"2025-06-04T15:46:21Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Reinsurance Group of America, Incorporated","range":"104.204.232.0/22","log":"ARIN"},{"id":40496,"date":"2025-05-30T16:03:24Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"ACN Communication Services, LLC","recipient_org":"Fortinet Inc.","range":"104.204.176.0/20","log":"ARIN"}],"events":[{"event_id":"a9bea0b96ed4c00a","registry":"ARIN","report_date":"2022-04-11","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"104.204.0.0/16","start":"104.204.0.0","end":"104.204.255.255","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":"2026-10-14T00:09:11+00:00","page":"https://rirtracker.com/ip/104.204.0.0-104.204.255.255/#e-a9bea0b96ed4c00a","report_page":"https://rirtracker.com/arin/reports/2022-04-11/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/104.204.0.0-104.204.255.255.json","observed":"104.204.0.0/16 allocated on 2022-04-11, reserved on 2022-04-12","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":"2022-06-10","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 2014-09-10) on 2022-04-10 and reserved on 2022-04-12. 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 2022-06-10. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220412.gz","retrieved_at":"2026-10-12T22:59:48+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 104.204.0.0/16 allocated on 2022-04-11, reserved on 2022-04-12"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220410.gz","retrieved_at":"2026-10-12T22:59:44+00:00","summary":"ARIN delegated statistics 2022-04-10 (produced 2022-04-10T13:00:10+00:00), before the report: allocated (dated 2014-09-10)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220412.gz","retrieved_at":"2026-10-12T22:59:48+00:00","summary":"ARIN delegated statistics 2022-04-12 (produced 2022-04-12T13:00:10+00:00), after the report: reserved"}]},{"event_id":"db6d27426b24f82a","registry":"ARIN","report_date":"2014-09-10","source":"arin_issued","raw_action":"ADD","raw_line":"Add 104.204.0.0-104.204.255.255","resource_type":"ipv4","resource":"104.204.0.0/16","start":"104.204.0.0","end":"104.204.255.255","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":"2026-10-13T23:51:15+00:00","page":"https://rirtracker.com/ip/104.204.0.0-104.204.255.255/#e-db6d27426b24f82a","report_page":"https://rirtracker.com/arin/reports/2014-09-10/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/104.204.0.0-104.204.255.255.json","explanation":"No transfer record matches. ARIN's statistics show it available on 2014-09-09 and allocated (dated 2014-09-10) on 2014-09-11. 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/2014-September/002100.html","retrieved_at":"2026-10-12T18:38:30+00:00","summary":"ARIN-Issued report for 2014-09-10: \"Add 104.204.0.0-104.204.255.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140909.gz","retrieved_at":"2026-10-12T20:40:48+00:00","summary":"ARIN delegated statistics 2014-09-09 (produced 2014-09-09T05:04:59+00:00), before the report: available"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20140911.gz","retrieved_at":"2026-10-12T20:40:53+00:00","summary":"ARIN delegated statistics 2014-09-11 (produced 2014-09-11T05:04:54+00:00), after the report: allocated (dated 2014-09-10)"}]}],"classification_history":{"a9bea0b96ed4c00a":[{"raw_change_id":426516,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T05:50:46+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 2014-09-10) on 2022-04-10 and reserved on 2022-04-12. 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 2022-06-10. This does not confirm availability."},{"raw_change_id":426516,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:20:28+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 2014-09-10) on 2022-04-10 and reserved on 2022-04-12. 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 2022-06-10. This does not confirm availability."},{"raw_change_id":426516,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T15:04:23+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 2014-09-10) on 2022-04-10 and reserved on 2022-04-12. 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 2022-06-10. This does not confirm availability."},{"raw_change_id":426516,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:09:11+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 2014-09-10) on 2022-04-10 and reserved on 2022-04-12. 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 2022-06-10. This does not confirm availability."}],"db6d27426b24f82a":[{"raw_change_id":133806,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:26:33+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2014-09-09 and allocated (dated 2014-09-10) on 2014-09-11. 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":133806,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:36+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2014-09-09 and allocated (dated 2014-09-10) on 2014-09-11. 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":133806,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:12+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2014-09-09 and allocated (dated 2014-09-10) on 2014-09-11. 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":133806,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:15+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it available on 2014-09-09 and allocated (dated 2014-09-10) on 2014-09-11. It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}]},"arin_statistics_now":{"status":"allocated (24 records, dated 2025-05-30 to 2026-08-06) (only part of the range)"}}