{"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":"208.83.0.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/208.83.0.0-208.83.7.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2016-12-08)"},"current_holder":{"rir":"ARIN","org":"MacStadium, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":8362,"date":"2016-12-08T15:06:45Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Virtual Citadel Inc.","recipient_org":"MacStadium, Inc.","range":"208.83.0.0/21","log":"ARIN"},{"id":6436,"date":"2016-02-04T21:09:57Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"BroadRiver Communication Corp.","recipient_org":"BroadRiver Inc.","range":"208.83.0.0/21","log":"ARIN"}],"events":[{"event_id":"2282314080a31210","registry":"ARIN","report_date":"2016-12-08","source":"arin_issued","raw_action":"ADD","raw_line":"Add 208.83.0.0-208.83.7.255","resource_type":"ipv4","resource":"208.83.0.0/21","start":"208.83.0.0","end":"208.83.7.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Virtual Citadel Inc.","recipient_organization":"MacStadium, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:40+00:00","page":"https://rirtracker.com/ip/208.83.0.0-208.83.7.255/#e-2282314080a31210","report_page":"https://rirtracker.com/arin/reports/2016-12-08/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/208.83.0.0-208.83.7.255.json","explanation":"ARIN's transfer log records a transfer from Virtual Citadel Inc. (ARIN) to MacStadium, Inc. (ARIN) on 2016-12-08 15:06 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/2016-December/002919.html","retrieved_at":"2026-10-12T18:39:27+00:00","summary":"ARIN-Issued report for 2016-12-08: \"Add 208.83.0.0-208.83.7.255\""},{"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 2016-12-08 15:06 UTC, Virtual Citadel Inc. (ARIN) to MacStadium, Inc. (ARIN); resources moved: 208.83.0.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20161207.gz","retrieved_at":"2026-10-12T21:20:27+00:00","summary":"ARIN delegated statistics 2016-12-07 (produced 2016-12-07T06:10:57+00:00), before the report: allocated (dated 2007-09-28)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20161209.gz","retrieved_at":"2026-10-12T21:20:35+00:00","summary":"ARIN delegated statistics 2016-12-09 (produced 2016-12-09T06:10:43+00:00), after the report: allocated (dated 2016-12-08)"}]},{"event_id":"326dde55081672bc","registry":"ARIN","report_date":"2016-02-04","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"208.83.0.0/21","start":"208.83.0.0","end":"208.83.7.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"BroadRiver Communication Corp.","recipient_organization":"BroadRiver Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:24+00:00","page":"https://rirtracker.com/ip/208.83.0.0-208.83.7.255/#e-326dde55081672bc","report_page":"https://rirtracker.com/arin/reports/2016-02-04/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/208.83.0.0-208.83.7.255.json","observed":"Merger/acquisition: BroadRiver Communication Corp. (ARIN) to BroadRiver Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from BroadRiver Communication Corp. (ARIN) to BroadRiver Inc. (ARIN) on 2016-02-04 21:09 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 2016-02-04 21:09 UTC, BroadRiver Communication Corp. (ARIN) to BroadRiver Inc. (ARIN); resources moved: 208.83.0.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160203.gz","retrieved_at":"2026-10-12T21:05:29+00:00","summary":"ARIN delegated statistics 2016-02-03 (produced 2016-02-03T06:04:50+00:00), before the report: allocated (dated 2007-09-28)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160205.gz","retrieved_at":"2026-10-12T21:05:40+00:00","summary":"ARIN delegated statistics 2016-02-05 (produced 2016-02-05T06:04:25+00:00), after the report: allocated (dated 2007-09-28)"}]},{"event_id":"e14858b0f35c5f1e","registry":"ARIN","report_date":"2014-10-14","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"208.83.0.0/21","start":"208.83.0.0","end":"208.83.7.255","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":"2026-10-14T00:00:08+00:00","page":"https://rirtracker.com/ip/208.83.0.0-208.83.7.255/#e-e14858b0f35c5f1e","report_page":"https://rirtracker.com/arin/reports/2014-10-14/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/208.83.0.0-208.83.7.255.json","observed":"208.83.0.0/21 allocated on 2014-10-14, reserved on 2014-10-15","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":"2014-12-13","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 2007-09-28) on 2014-10-13 and reserved on 2014-10-15. 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 2014-12-13. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20141015.gz","retrieved_at":"2026-10-12T20:42:29+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 208.83.0.0/21 allocated on 2014-10-14, reserved on 2014-10-15"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20141013.gz","retrieved_at":"2026-10-12T20:42:24+00:00","summary":"ARIN delegated statistics 2014-10-13 (produced 2014-10-13T05:03:47+00:00), before the report: allocated (dated 2007-09-28)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20141015.gz","retrieved_at":"2026-10-12T20:42:29+00:00","summary":"ARIN delegated statistics 2014-10-15 (produced 2014-10-15T05:03:54+00:00), after the report: reserved"}]}],"classification_history":{"2282314080a31210":[{"raw_change_id":146937,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:36:35+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Virtual Citadel Inc. (ARIN) to MacStadium, Inc. (ARIN) on 2016-12-08 15:06 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":146937,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:55+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Virtual Citadel Inc. (ARIN) to MacStadium, Inc. (ARIN) on 2016-12-08 15:06 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":146937,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:34+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Virtual Citadel Inc. (ARIN) to MacStadium, Inc. (ARIN) on 2016-12-08 15:06 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":146937,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:40+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Virtual Citadel Inc. (ARIN) to MacStadium, Inc. (ARIN) on 2016-12-08 15:06 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"326dde55081672bc":[{"raw_change_id":549853,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:24+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from BroadRiver Communication Corp. (ARIN) to BroadRiver Inc. (ARIN) on 2016-02-04 21:09 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."}],"e14858b0f35c5f1e":[{"raw_change_id":290440,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:51:51+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 2007-09-28) on 2014-10-13 and reserved on 2014-10-15. 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 2014-12-13. This does not confirm availability."},{"raw_change_id":290440,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:12:55+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 2007-09-28) on 2014-10-13 and reserved on 2014-10-15. 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 2014-12-13. This does not confirm availability."},{"raw_change_id":290440,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:56:15+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 2007-09-28) on 2014-10-13 and reserved on 2014-10-15. 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 2014-12-13. This does not confirm availability."},{"raw_change_id":290440,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:00:08+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 2007-09-28) on 2014-10-13 and reserved on 2014-10-15. 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 2014-12-13. This does not confirm availability."}]},"arin_statistics_now":{"status":"allocated (dated 2016-12-08)"}}