{"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":"168.100.128.0/19","resource_type":"ipv4","page":"https://rirtracker.com/ip/168.100.128.0-168.100.159.255/","statistics_now":{"registry":"APNIC","status":"allocated (dated 1994-03-07)"},"current_holder":{"rir":"APNIC","org":"Ahrefs Pte Ltd","how":"APNIC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":22117,"date":"2020-11-19T12:50:55Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"Cloud 9 Internet, Inc.","recipient_org":"Ahrefs Pte Ltd","range":"168.100.128.0/19","log":"ARIN"},{"id":126877,"date":"2020-11-19T09:08:13Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"APNIC","source_org":"C9I","recipient_org":"Ahrefs Pte Ltd","range":"168.100.128.0/19","log":"APNIC"}],"events":[{"event_id":"181f6e96a8ad9811","registry":"ARIN","report_date":"2020-11-19","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"168.100.128.0/19","start":"168.100.128.0","end":"168.100.159.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"Cloud 9 Internet, Inc.","recipient_organization":"Ahrefs Pte Ltd","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":"2026-10-14T00:18:52+00:00","page":"https://rirtracker.com/ip/168.100.128.0-168.100.159.255/#e-181f6e96a8ad9811","report_page":"https://rirtracker.com/arin/reports/2020-11-19/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/168.100.128.0-168.100.159.255.json","observed":"Transfer: Cloud 9 Internet, Inc. (ARIN) to Ahrefs Pte Ltd (APNIC)","piece_of":{"resource":"168.100.0.0/16","page":"https://rirtracker.com/ip/168.100.0.0-168.100.255.255/"},"same_transfer_as":"604fa81367daa798","explanation":"ARIN's transfer log records a transfer from Cloud 9 Internet, Inc. (ARIN) to Ahrefs Pte Ltd (APNIC) on 2020-11-19 12:50 UTC: it left ARIN for APNIC. It is not a new allocation and is not offered to ARIN applicants.","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: RESOURCE_TRANSFER on 2020-11-19 12:50 UTC, Cloud 9 Internet, Inc. (ARIN) to Ahrefs Pte Ltd (APNIC); resources moved: 168.100.128.0/19"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20201118.gz","retrieved_at":"2026-10-12T22:33:37+00:00","summary":"ARIN delegated statistics 2020-11-18 (produced 2020-11-18T15:00:13+00:00), before the report: assigned (dated 1994-03-07)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20201120.gz","retrieved_at":"2026-10-12T22:33:50+00:00","summary":"ARIN delegated statistics 2020-11-20 (produced 2020-11-20T15:00:13+00:00), after the report: not listed"}]},{"event_id":"604fa81367daa798","registry":"APNIC","report_date":"2020-11-19","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"168.100.128.0/19","start":"168.100.128.0","end":"168.100.159.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into APNIC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"APNIC","source_organization":"C9I","recipient_organization":"Ahrefs Pte Ltd","inventory_effect":"Transferred into APNIC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:41+00:00","page":"https://rirtracker.com/ip/168.100.128.0-168.100.159.255/#e-604fa81367daa798","report_page":"https://rirtracker.com/apnic/reports/2020-11-19/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/168.100.128.0-168.100.159.255.json","observed":"Transfer: C9I (ARIN) to Ahrefs Pte Ltd (APNIC)","same_transfer_as":"181f6e96a8ad9811","explanation":"APNIC's transfer log records a transfer from C9I (ARIN) to Ahrefs Pte Ltd (APNIC) on 2020-11-19 09:08 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance.","evidence":[{"type":"transfer","url":"https://ftp.apnic.net/stats/apnic/transfers/transfers_latest.json","retrieved_at":"2026-10-13T18:17:16+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2020-11-19 09:08 UTC, C9I (ARIN) to Ahrefs Pte Ltd (APNIC); resources moved: 168.100.128.0/19"},{"type":"delegated_before","url":"https://ftp.apnic.net/stats/apnic/2020/delegated-apnic-extended-20201119.gz","retrieved_at":"2026-10-12T23:32:08+00:00","summary":"APNIC delegated statistics 2020-11-19, before the change: not listed"},{"type":"delegated_after","url":"https://ftp.apnic.net/stats/apnic/2020/delegated-apnic-extended-20201120.gz","retrieved_at":"2026-10-12T23:32:12+00:00","summary":"APNIC delegated statistics 2020-11-20, after the change: allocated (dated 1994-03-07)"}]}],"classification_history":{"181f6e96a8ad9811":[{"raw_change_id":561412,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:52+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Cloud 9 Internet, Inc. (ARIN) to Ahrefs Pte Ltd (APNIC) on 2020-11-19 12:50 UTC: it left ARIN for APNIC. It is not a new allocation and is not offered to ARIN applicants."}],"604fa81367daa798":[{"raw_change_id":37127,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:36:32+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from C9I (ARIN) to Ahrefs Pte Ltd (APNIC) on 2020-11-19 09:08 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":37127,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:01:55+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from C9I (ARIN) to Ahrefs Pte Ltd (APNIC) on 2020-11-19 09:08 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":37127,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:06+00:00","current":0,"public_explanation":"APNIC's transfer log records a transfer from C9I (ARIN) to Ahrefs Pte Ltd (APNIC) on 2020-11-19 09:08 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":37127,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:46:41+00:00","current":1,"public_explanation":"APNIC's transfer log records a transfer from C9I (ARIN) to Ahrefs Pte Ltd (APNIC) on 2020-11-19 09:08 UTC: it came to APNIC from ARIN. It was already issued by another registry, so this is not a new issuance."}]},"arin_statistics_now":{"status":"not listed"}}