{"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":"204.107.136.0/24","resource_type":"ipv4","page":"https://rirtracker.com/ip/204.107.136.0-204.107.136.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 1994-10-19)"},"current_holder":{"rir":"ARIN","org":"WALSWORTH PUBLISHING COMPANY","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":22331,"date":"2020-12-22T13:20:54Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Ripon Printers","recipient_org":"WALSWORTH PUBLISHING COMPANY","range":"204.107.136.0/24","log":"ARIN"}],"events":[{"event_id":"b86a76652a44d543","registry":"ARIN","report_date":"2020-12-22","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"204.107.136.0/24","start":"204.107.136.0","end":"204.107.136.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Ripon Printers","recipient_organization":"WALSWORTH PUBLISHING COMPANY","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:18:52+00:00","page":"https://rirtracker.com/ip/204.107.136.0-204.107.136.255/#e-b86a76652a44d543","report_page":"https://rirtracker.com/arin/reports/2020-12-22/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/204.107.136.0-204.107.136.255.json","observed":"Merger/acquisition: Ripon Printers (ARIN) to WALSWORTH PUBLISHING COMPANY (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Ripon Printers (ARIN) to WALSWORTH PUBLISHING COMPANY (ARIN) on 2020-12-22 13:20 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 2020-12-22 13:20 UTC, Ripon Printers (ARIN) to WALSWORTH PUBLISHING COMPANY (ARIN); resources moved: 204.107.136.0/24"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20201221.gz","retrieved_at":"2026-10-12T22:35:26+00:00","summary":"ARIN delegated statistics 2020-12-21 (produced 2020-12-21T15:00:14+00:00), before the report: assigned (dated 1994-10-19)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2020/delegated-arin-extended-20201223.gz","retrieved_at":"2026-10-12T22:35:31+00:00","summary":"ARIN delegated statistics 2020-12-23 (produced 2020-12-23T15:00:14+00:00), after the report: assigned (dated 1994-10-19)"}]}],"classification_history":{"b86a76652a44d543":[{"raw_change_id":561504,"classification_code":"MERGER_ACQUISITION","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 merger, acquisition or reorganization from Ripon Printers (ARIN) to WALSWORTH PUBLISHING COMPANY (ARIN) on 2020-12-22 13:20 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":"allocated (dated 1994-10-19)"}}