{"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":"AS33313","resource_type":"asn","page":"https://rirtracker.com/asn/33313/","statistics_now":{"registry":"ARIN","status":"assigned (dated 2013-06-24)"},"current_holder":{"rir":"ARIN","org":"Zayo Bandwidth","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":5103,"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":"AS33313","log":"ARIN"},{"id":3695,"date":"2024-01-03T20:33:56Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Wilcon","recipient_org":"Crown Castle Fiber LLC","range":"AS33313","log":"ARIN"}],"events":[{"event_id":"43a5eaceed1be57f","registry":"ARIN","report_date":"2026-06-01","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"asn","resource":"AS33313","start":33313,"end":33313,"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/asn/33313/#e-43a5eaceed1be57f","report_page":"https://rirtracker.com/arin/reports/2026-06-01/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/33313.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: AS33313"},{"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: assigned (dated 2013-06-24)"},{"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: assigned (dated 2013-06-24)"}]},{"event_id":"d13013f5a79d148c","registry":"ARIN","report_date":"2024-01-03","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"asn","resource":"AS33313","start":33313,"end":33313,"classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Wilcon","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":"2026-10-14T00:19:12+00:00","page":"https://rirtracker.com/asn/33313/#e-d13013f5a79d148c","report_page":"https://rirtracker.com/arin/reports/2024-01-03/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/33313.json","observed":"Merger/acquisition: Wilcon (ARIN) to Crown Castle Fiber LLC (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Wilcon (ARIN) to Crown Castle Fiber LLC (ARIN) on 2024-01-03 20:33 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 2024-01-03 20:33 UTC, Wilcon (ARIN) to Crown Castle Fiber LLC (ARIN); resources moved: AS33313"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240102.gz","retrieved_at":"2026-10-12T23:32:55+00:00","summary":"ARIN delegated statistics 2024-01-02 (produced 2024-01-02T14:00:34+00:00), before the report: assigned (dated 2013-06-24)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240104.gz","retrieved_at":"2026-10-12T23:32:59+00:00","summary":"ARIN delegated statistics 2024-01-04 (produced 2024-01-04T14:00:34+00:00), after the report: assigned (dated 2013-06-24)"}]},{"event_id":"2593e555d0fcf68b","registry":"ARIN","report_date":"2013-01-11","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"asn","resource":"AS33313","start":33313,"end":33313,"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":"2026-10-13T23:57:54+00:00","page":"https://rirtracker.com/asn/33313/#e-2593e555d0fcf68b","report_page":"https://rirtracker.com/arin/reports/2013-01-11/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/33313.json","observed":"AS33313 allocated on 2013-01-11, not listed on 2013-01-12","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_months":6,"estimated_hold_end":"2013-07-11","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 2004-11-19) on 2013-01-10 and not issued on 2013-01-12. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the estimated hold end is 2013-07-11. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-20130112.gz","retrieved_at":"2026-10-12T19:53:27+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: AS33313 allocated on 2013-01-11, not listed on 2013-01-12"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-20130110.gz","retrieved_at":"2026-10-12T19:53:20+00:00","summary":"ARIN delegated statistics 2013-01-10, before the report: allocated (dated 2004-11-19)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-20130112.gz","retrieved_at":"2026-10-12T19:53:27+00:00","summary":"ARIN delegated statistics 2013-01-12, after the report: not issued"}]}],"classification_history":{"43a5eaceed1be57f":[{"raw_change_id":576206,"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."}],"d13013f5a79d148c":[{"raw_change_id":569813,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:12+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Wilcon (ARIN) to Crown Castle Fiber LLC (ARIN) on 2024-01-03 20:33 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."}],"2593e555d0fcf68b":[{"raw_change_id":254224,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:32:50+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 2004-11-19) on 2013-01-10 and not issued on 2013-01-12. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the earliest estimated hold expiration is 2013-07-11. This does not confirm availability."},{"raw_change_id":254224,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:10:58+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 2004-11-19) on 2013-01-10 and not issued on 2013-01-12. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the earliest estimated hold expiration is 2013-07-11. This does not confirm availability."},{"raw_change_id":254224,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:54:09+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 2004-11-19) on 2013-01-10 and not issued on 2013-01-12. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the earliest estimated hold expiration is 2013-07-11. This does not confirm availability."},{"raw_change_id":254224,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:57:54+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 2004-11-19) on 2013-01-10 and not issued on 2013-01-12. (Until 2013-03-05, ARIN's statistics list only what's issued.) Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed ASNs for 6 calendar months before reissuing them, so the estimated hold end is 2013-07-11. This does not confirm availability."}]},"arin_statistics_now":{"status":"assigned (dated 2013-06-24)"}}