{"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":"199.26.72.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/199.26.72.0-199.26.79.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2013-10-08)"},"current_holder":{"rir":"ARIN","org":"Zayo Bandwidth","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":44143,"date":"2026-06-01T16:06:28Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Crown Castle Fiber LLC","recipient_org":"Zayo Bandwidth","range":"199.26.72.0/21","log":"ARIN"},{"id":34721,"date":"2024-03-04T17:17:59Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Fibernet Direct","recipient_org":"Crown Castle Fiber LLC","range":"199.26.72.0/21","log":"ARIN"}],"events":[{"event_id":"8f3e0f827aa27036","registry":"ARIN","report_date":"2026-06-01","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"199.26.72.0/21","start":"199.26.72.0","end":"199.26.79.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Crown Castle Fiber LLC","recipient_organization":"Zayo Bandwidth","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:28+00:00","page":"https://rirtracker.com/ip/199.26.72.0-199.26.79.255/#e-8f3e0f827aa27036","report_page":"https://rirtracker.com/arin/reports/2026-06-01/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.26.72.0-199.26.79.255.json","observed":"Merger/acquisition: Crown Castle Fiber LLC (ARIN) to Zayo Bandwidth (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Crown Castle Fiber LLC (ARIN) to Zayo Bandwidth (ARIN) on 2026-06-01 16:06 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 2026-06-01 16:06 UTC, Crown Castle Fiber LLC (ARIN) to Zayo Bandwidth (ARIN); resources moved: 199.26.72.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260531","retrieved_at":"2026-10-09T19:02:06+00:00","summary":"ARIN delegated statistics 2026-05-31 (produced 2026-05-31T13:00:19+00:00), before the report: allocated (dated 2013-10-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/delegated-arin-extended-20260602","retrieved_at":"2026-10-09T19:02:12+00:00","summary":"ARIN delegated statistics 2026-06-02 (produced 2026-06-02T13:00:19+00:00), after the report: allocated (dated 2013-10-08)"}]},{"event_id":"b627cf2bd707f507","registry":"ARIN","report_date":"2024-03-04","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"199.26.72.0/21","start":"199.26.72.0","end":"199.26.79.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Fibernet Direct","recipient_organization":"Crown Castle Fiber LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:13+00:00","page":"https://rirtracker.com/ip/199.26.72.0-199.26.79.255/#e-b627cf2bd707f507","report_page":"https://rirtracker.com/arin/reports/2024-03-04/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.26.72.0-199.26.79.255.json","observed":"Merger/acquisition: Fibernet Direct (ARIN) to Crown Castle Fiber LLC (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Fibernet Direct (ARIN) to Crown Castle Fiber LLC (ARIN) on 2024-03-04 17:17 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 2024-03-04 17:17 UTC, Fibernet Direct (ARIN) to Crown Castle Fiber LLC (ARIN); resources moved: 199.26.72.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240303.gz","retrieved_at":"2026-10-12T23:36:08+00:00","summary":"ARIN delegated statistics 2024-03-03 (produced 2024-03-03T14:00:45+00:00), before the report: allocated (dated 2013-10-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240305.gz","retrieved_at":"2026-10-12T23:36:13+00:00","summary":"ARIN delegated statistics 2024-03-05 (produced 2024-03-05T14:00:45+00:00), after the report: allocated (dated 2013-10-08)"}]},{"event_id":"a3fd00e9b25d01e1","registry":"ARIN","report_date":"2013-10-08","source":"arin_issued","raw_action":"ADD","raw_line":"Add 199.26.72.0-199.26.79.255","resource_type":"ipv4","resource":"199.26.72.0/21","start":"199.26.72.0","end":"199.26.79.255","classification":"APPARENT_REISSUANCE","classification_label":"Apparent reissuance of previously removed resource","confidence":"OBSERVED_ONLY","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":"2026-10-13T23:51:08+00:00","page":"https://rirtracker.com/ip/199.26.72.0-199.26.79.255/#e-a3fd00e9b25d01e1","report_page":"https://rirtracker.com/arin/reports/2013-10-08/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.26.72.0-199.26.79.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2013-10-07 and allocated (dated 2013-10-08) on 2013-10-09. The tracker saw this range released from hold on 2013-10-07 (199.26.72.0-199.26.79.255), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2013-10-07: Remove 199.26.72.0-199.26.79.255), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2013-October/001763.html","retrieved_at":"2026-10-12T18:38:07+00:00","summary":"ARIN-Issued report for 2013-10-08: \"Add 199.26.72.0-199.26.79.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20131007.gz","retrieved_at":"2026-10-12T20:05:46+00:00","summary":"ARIN delegated statistics 2013-10-07 (produced 2013-10-07T05:08:34+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20131009.gz","retrieved_at":"2026-10-12T20:05:51+00:00","summary":"ARIN delegated statistics 2013-10-09 (produced 2013-10-09T05:04:02+00:00), after the report: allocated (dated 2013-10-08)"}]},{"event_id":"8a4e9f4729667869","registry":"ARIN","report_date":"2013-10-07","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 199.26.72.0-199.26.79.255","resource_type":"ipv4","resource":"199.26.72.0/21","start":"199.26.72.0","end":"199.26.79.255","classification":"HOLD_RELEASED","classification_label":"Released from hold (ARIN lists it as 'available')","confidence":"OBSERVED_ONLY","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"ARIN's statistics now list it as 'available'; reissue not confirmed","inventory_effect_code":"RELEASED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:08+00:00","page":"https://rirtracker.com/ip/199.26.72.0-199.26.79.255/#e-8a4e9f4729667869","report_page":"https://rirtracker.com/arin/reports/2013-10-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.26.72.0-199.26.79.255.json","explanation":"ARIN's statistics show it reserved on 2013-10-06 and available on 2013-10-08. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. The tracker saw it removed from registration on 2013-07-08, 91 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2013-10-08: Add 199.26.72.0-199.26.79.255), so the before-and-after statistics may include it.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2013-October/001762.html","retrieved_at":"2026-10-12T18:38:07+00:00","summary":"ARIN-Issued report for 2013-10-07: \"Remove 199.26.72.0-199.26.79.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20131006.gz","retrieved_at":"2026-10-12T20:05:44+00:00","summary":"ARIN delegated statistics 2013-10-06 (produced 2013-10-06T05:08:13+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20131008.gz","retrieved_at":"2026-10-12T20:05:49+00:00","summary":"ARIN delegated statistics 2013-10-08 (produced 2013-10-08T05:03:56+00:00), after the report: available"}]},{"event_id":"2adfcbaf8dbfc1b7","registry":"ARIN","report_date":"2013-07-08","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"199.26.72.0/21","start":"199.26.72.0","end":"199.26.79.255","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":"2026-10-13T23:58:17+00:00","page":"https://rirtracker.com/ip/199.26.72.0-199.26.79.255/#e-2adfcbaf8dbfc1b7","report_page":"https://rirtracker.com/arin/reports/2013-07-08/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.26.72.0-199.26.79.255.json","observed":"199.26.72.0/21 allocated on 2013-07-08, reserved on 2013-07-09","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":"2013-09-06","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 2008-10-21) on 2013-07-07 and reserved on 2013-07-09. 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 2013-09-06. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20130709.gz","retrieved_at":"2026-10-12T20:01:25+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 199.26.72.0/21 allocated on 2013-07-08, reserved on 2013-07-09"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20130707.gz","retrieved_at":"2026-10-12T20:01:20+00:00","summary":"ARIN delegated statistics 2013-07-07 (produced 2013-07-07T05:06:34+00:00), before the report: allocated (dated 2008-10-21)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20130709.gz","retrieved_at":"2026-10-12T20:01:25+00:00","summary":"ARIN delegated statistics 2013-07-09 (produced 2013-07-09T05:06:23+00:00), after the report: reserved"}]}],"classification_history":{"8f3e0f827aa27036":[{"raw_change_id":576272,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:28+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Crown Castle Fiber LLC (ARIN) to Zayo Bandwidth (ARIN) on 2026-06-01 16:06 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."}],"b627cf2bd707f507":[{"raw_change_id":570403,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:13+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Fibernet Direct (ARIN) to Crown Castle Fiber LLC (ARIN) on 2024-03-04 17:17 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."}],"a3fd00e9b25d01e1":[{"raw_change_id":130426,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:22:26+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2013-10-07 and allocated (dated 2013-10-08) on 2013-10-09. The tracker saw this range released from hold on 2013-10-07 (199.26.72.0-199.26.79.255), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2013-10-07: Remove 199.26.72.0-199.26.79.255), so the before-and-after statistics may include it."},{"raw_change_id":130426,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:31+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2013-10-07 and allocated (dated 2013-10-08) on 2013-10-09. The tracker saw this range released from hold on 2013-10-07 (199.26.72.0-199.26.79.255), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2013-10-07: Remove 199.26.72.0-199.26.79.255), so the before-and-after statistics may include it."},{"raw_change_id":130426,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:06+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2013-10-07 and allocated (dated 2013-10-08) on 2013-10-09. The tracker saw this range released from hold on 2013-10-07 (199.26.72.0-199.26.79.255), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2013-10-07: Remove 199.26.72.0-199.26.79.255), so the before-and-after statistics may include it."},{"raw_change_id":130426,"classification_code":"APPARENT_REISSUANCE","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:08+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2013-10-07 and allocated (dated 2013-10-08) on 2013-10-09. The tracker saw this range released from hold on 2013-10-07 (199.26.72.0-199.26.79.255), so it appears to have been issued again from ARIN's pool. Another change to this range was reported the day before or after (2013-10-07: Remove 199.26.72.0-199.26.79.255), so the before-and-after statistics may include it."}],"8a4e9f4729667869":[{"raw_change_id":130362,"classification_code":"HOLD_RELEASED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.0","classified_at":"2026-10-13T03:22:22+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2013-10-06 and available on 2013-10-08. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. The tracker saw it removed from registration on 2013-07-08, 91 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2013-10-08: Add 199.26.72.0-199.26.79.255), so the before-and-after statistics may include it."},{"raw_change_id":130362,"classification_code":"HOLD_RELEASED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:31+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2013-10-06 and available on 2013-10-08. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. The tracker saw it removed from registration on 2013-07-08, 91 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2013-10-08: Add 199.26.72.0-199.26.79.255), so the before-and-after statistics may include it."},{"raw_change_id":130362,"classification_code":"HOLD_RELEASED","confidence":"OBSERVED_ONLY","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:06+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2013-10-06 and available on 2013-10-08. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. The tracker saw it removed from registration on 2013-07-08, 91 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2013-10-08: Add 199.26.72.0-199.26.79.255), so the before-and-after statistics may include it."},{"raw_change_id":130362,"classification_code":"HOLD_RELEASED","confidence":"OBSERVED_ONLY","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:08+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2013-10-06 and available on 2013-10-08. ARIN took it out of its reserved (held) records; its statistics now give it the status 'available'. The tracker saw it removed from registration on 2013-07-08, 91 days earlier. That is ARIN's own label: whether and when it is reissued is not confirmed. Another change to this range was reported the day before or after (2013-10-08: Add 199.26.72.0-199.26.79.255), so the before-and-after statistics may include it."}],"2adfcbaf8dbfc1b7":[{"raw_change_id":260781,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:36:15+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 2008-10-21) on 2013-07-07 and reserved on 2013-07-09. 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 2013-09-06. This does not confirm availability."},{"raw_change_id":260781,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:11:19+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 2008-10-21) on 2013-07-07 and reserved on 2013-07-09. 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 2013-09-06. This does not confirm availability."},{"raw_change_id":260781,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:54:32+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 2008-10-21) on 2013-07-07 and reserved on 2013-07-09. 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 2013-09-06. This does not confirm availability."},{"raw_change_id":260781,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:58:17+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 2008-10-21) on 2013-07-07 and reserved on 2013-07-09. 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 2013-09-06. This does not confirm availability."}]},"arin_statistics_now":{"status":"allocated (dated 2013-10-08)"}}