{"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":"AS13858","resource_type":"asn","page":"https://rirtracker.com/asn/13858/","statistics_now":{"registry":"ARIN","status":"assigned (dated 1999-08-30)"},"current_holder":{"rir":"ARIN","org":"TransCanada Pipelines Ltd.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":1445,"date":"2018-12-10T20:12:21Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"TransCanada Pipelines Ltd.","recipient_org":"TransCanada Pipelines Ltd.","range":"AS13858","log":"ARIN"},{"id":812,"date":"2017-12-04T17:43:47Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Columbia Pipeline Group","recipient_org":"TransCanada Pipelines Ltd.","range":"AS13858","log":"ARIN"},{"id":303,"date":"2016-08-17T13:57:31Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"NiSource Corporate Services Company","recipient_org":"Columbia Pipeline Group","range":"AS13858","log":"ARIN"}],"events":[{"event_id":"1c1370815ba125aa","registry":"ARIN","report_date":"2018-12-10","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"asn","resource":"AS13858","start":13858,"end":13858,"classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"TransCanada Pipelines Ltd.","recipient_organization":"TransCanada Pipelines Ltd.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:42+00:00","page":"https://rirtracker.com/asn/13858/#e-1c1370815ba125aa","report_page":"https://rirtracker.com/arin/reports/2018-12-10/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/13858.json","observed":"Merger/acquisition: TransCanada Pipelines Ltd. (ARIN) to TransCanada Pipelines Ltd. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from TransCanada Pipelines Ltd. (ARIN) to TransCanada Pipelines Ltd. (ARIN) on 2018-12-10 20:12 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 2018-12-10 20:12 UTC, TransCanada Pipelines Ltd. (ARIN) to TransCanada Pipelines Ltd. (ARIN); resources moved: AS13858"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181209.gz","retrieved_at":"2026-10-12T21:56:54+00:00","summary":"ARIN delegated statistics 2018-12-09 (produced 2018-12-09T06:00:11+00:00), before the report: assigned (dated 1999-08-30)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2018/delegated-arin-extended-20181211.gz","retrieved_at":"2026-10-12T21:56:59+00:00","summary":"ARIN delegated statistics 2018-12-11 (produced 2018-12-11T06:00:12+00:00), after the report: assigned (dated 1999-08-30)"}]},{"event_id":"9243a416cb5924ec","registry":"ARIN","report_date":"2017-12-04","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"asn","resource":"AS13858","start":13858,"end":13858,"classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Columbia Pipeline Group","recipient_organization":"TransCanada Pipelines Ltd.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:32+00:00","page":"https://rirtracker.com/asn/13858/#e-9243a416cb5924ec","report_page":"https://rirtracker.com/arin/reports/2017-12-04/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/13858.json","observed":"Merger/acquisition: Columbia Pipeline Group (ARIN) to TransCanada Pipelines Ltd. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Columbia Pipeline Group (ARIN) to TransCanada Pipelines Ltd. (ARIN) on 2017-12-04 17:43 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 2017-12-04 17:43 UTC, Columbia Pipeline Group (ARIN) to TransCanada Pipelines Ltd. (ARIN); resources moved: AS13858"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171203.gz","retrieved_at":"2026-10-12T21:38:14+00:00","summary":"ARIN delegated statistics 2017-12-03 (produced 2017-12-03T06:09:26+00:00), before the report: assigned (dated 1999-08-30)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20171205.gz","retrieved_at":"2026-10-12T21:38:18+00:00","summary":"ARIN delegated statistics 2017-12-05 (produced 2017-12-05T06:09:13+00:00), after the report: assigned (dated 1999-08-30)"}]},{"event_id":"9bd5ef805eeec3fc","registry":"ARIN","report_date":"2016-08-17","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"asn","resource":"AS13858","start":13858,"end":13858,"classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"NiSource Corporate Services Company","recipient_organization":"Columbia Pipeline Group","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:26+00:00","page":"https://rirtracker.com/asn/13858/#e-9bd5ef805eeec3fc","report_page":"https://rirtracker.com/arin/reports/2016-08-17/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/13858.json","observed":"Merger/acquisition: NiSource Corporate Services Company (ARIN) to Columbia Pipeline Group (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from NiSource Corporate Services Company (ARIN) to Columbia Pipeline Group (ARIN) on 2016-08-17 13:57 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 2016-08-17 13:57 UTC, NiSource Corporate Services Company (ARIN) to Columbia Pipeline Group (ARIN); resources moved: AS13858"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160816.gz","retrieved_at":"2026-10-12T21:14:50+00:00","summary":"ARIN delegated statistics 2016-08-16 (produced 2016-08-16T05:09:22+00:00), before the report: assigned (dated 1999-08-30)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2016/delegated-arin-extended-20160818.gz","retrieved_at":"2026-10-12T21:14:55+00:00","summary":"ARIN delegated statistics 2016-08-18 (produced 2016-08-18T05:09:30+00:00), after the report: assigned (dated 1999-08-30)"}]}],"classification_history":{"1c1370815ba125aa":[{"raw_change_id":557688,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:42+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from TransCanada Pipelines Ltd. (ARIN) to TransCanada Pipelines Ltd. (ARIN) on 2018-12-10 20:12 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."}],"9243a416cb5924ec":[{"raw_change_id":553438,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:32+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Columbia Pipeline Group (ARIN) to TransCanada Pipelines Ltd. (ARIN) on 2017-12-04 17:43 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."}],"9bd5ef805eeec3fc":[{"raw_change_id":550592,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:26+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from NiSource Corporate Services Company (ARIN) to Columbia Pipeline Group (ARIN) on 2016-08-17 13:57 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."}]},"arin_statistics_now":{"status":"assigned (dated 1999-08-30)"}}