{"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":"66.55.96.0/20","resource_type":"ipv4","page":"https://rirtracker.com/ip/66.55.96.0-66.55.111.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2014-10-15)"},"current_holder":{"rir":"ARIN","org":"Fiserv Solutions, LLC","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":23916,"date":"2021-02-23T20:22:31Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Funds Xpress Financial Network, Inc.","recipient_org":"Fiserv Solutions, LLC","range":"66.55.96.0/20","log":"ARIN"}],"events":[{"event_id":"acc2bb2a823f610d","registry":"ARIN","report_date":"2021-02-23","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"66.55.96.0/20","start":"66.55.96.0","end":"66.55.111.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Funds Xpress Financial Network, Inc.","recipient_organization":"Fiserv Solutions, LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:55+00:00","page":"https://rirtracker.com/ip/66.55.96.0-66.55.111.255/#e-acc2bb2a823f610d","report_page":"https://rirtracker.com/arin/reports/2021-02-23/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/66.55.96.0-66.55.111.255.json","observed":"Merger/acquisition: Funds Xpress Financial Network, Inc. (ARIN) to Fiserv Solutions, LLC (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Funds Xpress Financial Network, Inc. (ARIN) to Fiserv Solutions, LLC (ARIN) on 2021-02-23 20:22 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 2021-02-23 20:22 UTC, Funds Xpress Financial Network, Inc. (ARIN) to Fiserv Solutions, LLC (ARIN); resources moved: 66.55.96.0/20"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210222.gz","retrieved_at":"2026-10-12T22:38:38+00:00","summary":"ARIN delegated statistics 2021-02-22 (produced 2021-02-22T15:00:12+00:00), before the report: assigned (dated 2014-10-15)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210224.gz","retrieved_at":"2026-10-12T22:38:43+00:00","summary":"ARIN delegated statistics 2021-02-24 (produced 2021-02-24T15:00:13+00:00), after the report: assigned (dated 2014-10-15)"}]},{"event_id":"72c678826b280b05","registry":"ARIN","report_date":"2014-10-15","source":"arin_issued","raw_action":"ADD","raw_line":"Add 66.55.96.0-66.55.111.255","resource_type":"ipv4","resource":"66.55.96.0/20","start":"66.55.96.0","end":"66.55.111.255","classification":"RESTORED","classification_label":"Restored to the same holder","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:15+00:00","page":"https://rirtracker.com/ip/66.55.96.0-66.55.111.255/#e-72c678826b280b05","report_page":"https://rirtracker.com/arin/reports/2014-10-15/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/66.55.96.0-66.55.111.255.json","explanation":"No transfer record matches. ARIN's statistics show it reserved on 2014-10-14 and assigned (dated 2014-10-15) on 2014-10-16. The tracker saw it removed from registration on 2013-10-30 (350 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2014-October/002135.html","retrieved_at":"2026-10-12T18:38:32+00:00","summary":"ARIN-Issued report for 2014-10-15: \"Add 66.55.96.0-66.55.111.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20141014.gz","retrieved_at":"2026-10-12T20:42:26+00:00","summary":"ARIN delegated statistics 2014-10-14 (produced 2014-10-14T05:03:49+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20141016.gz","retrieved_at":"2026-10-12T20:42:31+00:00","summary":"ARIN delegated statistics 2014-10-16 (produced 2014-10-16T05:04:06+00:00), after the report: assigned (dated 2014-10-15)"}]},{"event_id":"ccb94b7e61c2b39f","registry":"ARIN","report_date":"2014-10-15","source":"arin_issued","raw_action":"REMOVE","raw_line":"Remove 66.55.96.0-66.55.111.255","resource_type":"ipv4","resource":"66.55.96.0/20","start":"66.55.96.0","end":"66.55.111.255","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":"2026-10-13T23:51:15+00:00","page":"https://rirtracker.com/ip/66.55.96.0-66.55.111.255/#e-ccb94b7e61c2b39f","report_page":"https://rirtracker.com/arin/reports/2014-10-15/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/66.55.96.0-66.55.111.255.json","explanation":"ARIN's statistics show it reserved on 2014-10-14 and assigned (dated 2014-10-15) on 2014-10-16. ARIN removed its own pool record for this range as part of issuing it: the same report adds 66.55.96.0-66.55.111.255. The issuance is explained on that line.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2014-October/002135.html","retrieved_at":"2026-10-12T18:38:32+00:00","summary":"ARIN-Issued report for 2014-10-15: \"Remove 66.55.96.0-66.55.111.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20141014.gz","retrieved_at":"2026-10-12T20:42:26+00:00","summary":"ARIN delegated statistics 2014-10-14 (produced 2014-10-14T05:03:49+00:00), before the report: reserved"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2014/delegated-arin-extended-20141016.gz","retrieved_at":"2026-10-12T20:42:31+00:00","summary":"ARIN delegated statistics 2014-10-16 (produced 2014-10-16T05:04:06+00:00), after the report: assigned (dated 2014-10-15)"}]},{"event_id":"a8dc390c057783f4","registry":"ARIN","report_date":"2013-10-30","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"66.55.96.0/20","start":"66.55.96.0","end":"66.55.111.255","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":"2026-10-13T23:58:33+00:00","page":"https://rirtracker.com/ip/66.55.96.0-66.55.111.255/#e-a8dc390c057783f4","report_page":"https://rirtracker.com/arin/reports/2013-10-30/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/66.55.96.0-66.55.111.255.json","observed":"66.55.96.0/20 assigned on 2013-10-30, reserved on 2013-10-31","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":"2013-12-29","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 assigned (dated 2003-07-08) on 2013-10-29 and reserved on 2013-10-31. 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 2013-12-29. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20131031.gz","retrieved_at":"2026-10-12T20:06:51+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 66.55.96.0/20 assigned on 2013-10-30, reserved on 2013-10-31"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20131029.gz","retrieved_at":"2026-10-12T20:06:46+00:00","summary":"ARIN delegated statistics 2013-10-29 (produced 2013-10-29T05:06:33+00:00), before the report: assigned (dated 2003-07-08)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2013/delegated-arin-extended-20131031.gz","retrieved_at":"2026-10-12T20:06:51+00:00","summary":"ARIN delegated statistics 2013-10-31 (produced 2013-10-31T05:06:33+00:00), after the report: reserved"}]}],"classification_history":{"acc2bb2a823f610d":[{"raw_change_id":562873,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:55+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Funds Xpress Financial Network, Inc. (ARIN) to Fiserv Solutions, LLC (ARIN) on 2021-02-23 20:22 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."}],"72c678826b280b05":[{"raw_change_id":134248,"classification_code":"RESTORED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:27:11+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2014-10-14 and assigned (dated 2014-10-15) on 2014-10-16. The tracker saw it removed from registration on 2013-10-30 (350 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction."},{"raw_change_id":134248,"classification_code":"RESTORED","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 reserved on 2014-10-14 and assigned (dated 2014-10-15) on 2014-10-16. The tracker saw it removed from registration on 2013-10-30 (350 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction."},{"raw_change_id":134248,"classification_code":"RESTORED","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:13+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it reserved on 2014-10-14 and assigned (dated 2014-10-15) on 2014-10-16. The tracker saw it removed from registration on 2013-10-30 (350 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction."},{"raw_change_id":134248,"classification_code":"RESTORED","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 reserved on 2014-10-14 and assigned (dated 2014-10-15) on 2014-10-16. The tracker saw it removed from registration on 2013-10-30 (350 days earlier), and it is back with the same holder record it had before, so it went back to its previous holder rather than to a new one: most likely a suspension lifted, a reinstatement or a correction."}],"ccb94b7e61c2b39f":[{"raw_change_id":134241,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:27:11+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2014-10-14 and assigned (dated 2014-10-15) on 2014-10-16. ARIN removed its own pool record for this range as part of issuing it: the same report adds 66.55.96.0-66.55.111.255. The issuance is explained on that line."},{"raw_change_id":134241,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:36+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2014-10-14 and assigned (dated 2014-10-15) on 2014-10-16. ARIN removed its own pool record for this range as part of issuing it: the same report adds 66.55.96.0-66.55.111.255. The issuance is explained on that line."},{"raw_change_id":134241,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:48:13+00:00","current":0,"public_explanation":"ARIN's statistics show it reserved on 2014-10-14 and assigned (dated 2014-10-15) on 2014-10-16. ARIN removed its own pool record for this range as part of issuing it: the same report adds 66.55.96.0-66.55.111.255. The issuance is explained on that line."},{"raw_change_id":134241,"classification_code":"POOL_RECORD_CHANGE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:51:15+00:00","current":1,"public_explanation":"ARIN's statistics show it reserved on 2014-10-14 and assigned (dated 2014-10-15) on 2014-10-16. ARIN removed its own pool record for this range as part of issuing it: the same report adds 66.55.96.0-66.55.111.255. The issuance is explained on that line."}],"a8dc390c057783f4":[{"raw_change_id":265070,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:38:30+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 assigned (dated 2003-07-08) on 2013-10-29 and reserved on 2013-10-31. 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 2013-12-29. This does not confirm availability."},{"raw_change_id":265070,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:11:33+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 assigned (dated 2003-07-08) on 2013-10-29 and reserved on 2013-10-31. 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 2013-12-29. This does not confirm availability."},{"raw_change_id":265070,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:54:46+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 assigned (dated 2003-07-08) on 2013-10-29 and reserved on 2013-10-31. 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 2013-12-29. This does not confirm availability."},{"raw_change_id":265070,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:58:33+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 assigned (dated 2003-07-08) on 2013-10-29 and reserved on 2013-10-31. 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 2013-12-29. This does not confirm availability."}]},"arin_statistics_now":{"status":"allocated (dated 2014-10-15)"}}