{"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":"151.186.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/151.186.0.0-151.186.255.255/","statistics_now":{"registry":"RIPE NCC","status":"assigned (dated 1991-09-17)"},"current_holder":{"rir":"RIPE NCC","org":"Cisco OpenDNS LLC","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":80619,"date":"2021-09-02T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"Cisco OpenDNS LLC","range":"151.186.0.0/16","log":"RIPE NCC"},{"id":25411,"date":"2021-09-02T14:20:23Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"General Electric Company","recipient_org":"Cisco OpenDNS LLC","range":"151.186.0.0/16","log":"ARIN"},{"id":25143,"date":"2021-07-20T16:12:41Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Marquette Electronics Inc.","recipient_org":"General Electric Company","range":"151.186.0.0/16","log":"ARIN"}],"events":[{"event_id":"4ef249d7030aba4a","registry":"ARIN","report_date":"2021-09-02","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"151.186.0.0/16","start":"151.186.0.0","end":"151.186.255.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"General Electric Company","recipient_organization":"Cisco OpenDNS LLC","inventory_effect":"Transferred out of ARIN administration; not offered to ARIN applicants","inventory_effect_code":"TRANSFER_OUT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:08:24+00:00","page":"https://rirtracker.com/ip/151.186.0.0-151.186.255.255/#e-4ef249d7030aba4a","report_page":"https://rirtracker.com/arin/reports/2021-09-02/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/151.186.0.0-151.186.255.255.json","observed":"151.186.0.0/16 assigned on 2021-09-02, not listed on 2021-09-03","same_transfer_as":"f32fb26dd722c8b4","explanation":"ARIN's transfer log records a transfer from General Electric Company (ARIN) to Cisco OpenDNS LLC (RIPE NCC) on 2021-09-02 14:20 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210903.gz","retrieved_at":"2026-10-12T22:48:17+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 151.186.0.0/16 assigned on 2021-09-02, not listed on 2021-09-03"},{"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 2021-09-02 14:20 UTC, General Electric Company (ARIN) to Cisco OpenDNS LLC (RIPE NCC); resources moved: 151.186.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210901.gz","retrieved_at":"2026-10-12T22:48:12+00:00","summary":"ARIN delegated statistics 2021-09-01 (produced 2021-09-01T14:00:14+00:00), before the report: assigned (dated 1991-09-17)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210903.gz","retrieved_at":"2026-10-12T22:48:17+00:00","summary":"ARIN delegated statistics 2021-09-03 (produced 2021-09-03T14:00:15+00:00), after the report: not listed"}]},{"event_id":"f32fb26dd722c8b4","registry":"RIPE NCC","report_date":"2021-09-02","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"151.186.0.0/16","start":"151.186.0.0","end":"151.186.255.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into the RIPE NCC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":null,"recipient_organization":"Cisco OpenDNS LLC","inventory_effect":"Transferred into RIPE NCC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:48:44+00:00","page":"https://rirtracker.com/ip/151.186.0.0-151.186.255.255/#e-f32fb26dd722c8b4","report_page":"https://rirtracker.com/ripe/reports/2021-09-02/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/151.186.0.0-151.186.255.255.json","observed":"Transfer: (no name) (ARIN) to Cisco OpenDNS LLC (RIPE NCC)","same_transfer_as":"4ef249d7030aba4a","explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Cisco OpenDNS LLC (RIPE NCC) on 2021-09-02 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance.","evidence":[{"type":"transfer","url":"https://ftp.ripe.net/pub/stats/ripencc/transfers/transfers_latest.json","retrieved_at":"2026-10-13T21:49:37+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2021-09-02 19:00 UTC, (no name) (ARIN) to Cisco OpenDNS LLC (RIPE NCC); resources moved: 151.186.0.0/16"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210901.bz2","retrieved_at":"2026-10-12T23:15:53+00:00","summary":"RIPE NCC delegated statistics 2021-09-01 (produced 2021-09-01T21:59:00+00:00), before the change: not listed"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2021/delegated-ripencc-extended-20210902.bz2","retrieved_at":"2026-10-12T23:15:56+00:00","summary":"RIPE NCC delegated statistics 2021-09-02 (produced 2021-09-02T21:59:00+00:00), after the change: assigned (dated 1991-09-17)"}]},{"event_id":"f67a6ae1641a83b6","registry":"ARIN","report_date":"2021-07-20","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"151.186.0.0/16","start":"151.186.0.0","end":"151.186.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Marquette Electronics Inc.","recipient_organization":"General Electric Company","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:57+00:00","page":"https://rirtracker.com/ip/151.186.0.0-151.186.255.255/#e-f67a6ae1641a83b6","report_page":"https://rirtracker.com/arin/reports/2021-07-20/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/151.186.0.0-151.186.255.255.json","observed":"Merger/acquisition: Marquette Electronics Inc. (ARIN) to General Electric Company (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Marquette Electronics Inc. (ARIN) to General Electric Company (ARIN) on 2021-07-20 16:12 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 2021-07-20 16:12 UTC, Marquette Electronics Inc. (ARIN) to General Electric Company (ARIN); resources moved: 151.186.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210719.gz","retrieved_at":"2026-10-12T22:46:02+00:00","summary":"ARIN delegated statistics 2021-07-19 (produced 2021-07-19T14:00:14+00:00), before the report: assigned (dated 1991-09-17)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210721.gz","retrieved_at":"2026-10-12T22:46:07+00:00","summary":"ARIN delegated statistics 2021-07-21 (produced 2021-07-21T14:00:13+00:00), after the report: assigned (dated 1991-09-17)"}]}],"classification_history":{"4ef249d7030aba4a":[{"raw_change_id":415692,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T05:46:46+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from General Electric Company (ARIN) to Cisco OpenDNS LLC (RIPE NCC) on 2021-09-02 14:20 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":415692,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:19:49+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from General Electric Company (ARIN) to Cisco OpenDNS LLC (RIPE NCC) on 2021-09-02 14:20 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":415692,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T15:03:41+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from General Electric Company (ARIN) to Cisco OpenDNS LLC (RIPE NCC) on 2021-09-02 14:20 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":415692,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:08:24+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from General Electric Company (ARIN) to Cisco OpenDNS LLC (RIPE NCC) on 2021-09-02 14:20 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."}],"f32fb26dd722c8b4":[{"raw_change_id":80809,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:54:40+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Cisco OpenDNS LLC (RIPE NCC) on 2021-09-02 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":80809,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:03:38+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Cisco OpenDNS LLC (RIPE NCC) on 2021-09-02 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":80809,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:46:00+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Cisco OpenDNS LLC (RIPE NCC) on 2021-09-02 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":80809,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:48:44+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Cisco OpenDNS LLC (RIPE NCC) on 2021-09-02 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."}],"f67a6ae1641a83b6":[{"raw_change_id":563589,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:57+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Marquette Electronics Inc. (ARIN) to General Electric Company (ARIN) on 2021-07-20 16:12 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."}]},"arin_statistics_now":{"status":"not listed"}}