{"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":"AS3555","resource_type":"asn","page":"https://rirtracker.com/asn/3555/","statistics_now":{"registry":"ARIN","status":"assigned (dated 1994-04-15)"},"current_holder":{"rir":"ARIN","org":"AT&T Technical Services Company, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":2413,"date":"2021-04-13T22:21:50Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"GRC International, Inc.","recipient_org":"AT&T Technical Services Company, Inc.","range":"AS3555","log":"ARIN"}],"events":[{"event_id":"91c1103011a88c48","registry":"ARIN","report_date":"2021-04-13","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"asn","resource":"AS3555","start":3555,"end":3555,"classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"GRC International, Inc.","recipient_organization":"AT&T Technical Services Company, Inc.","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/asn/3555/#e-91c1103011a88c48","report_page":"https://rirtracker.com/arin/reports/2021-04-13/","evidence_url":"https://rirtracker.com/api/v1/resources/asn/3555.json","observed":"Merger/acquisition: GRC International, Inc. (ARIN) to AT&T Technical Services Company, Inc. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from GRC International, Inc. (ARIN) to AT&T Technical Services Company, Inc. (ARIN) on 2021-04-13 22:21 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 2021-04-13 22:21 UTC, GRC International, Inc. (ARIN) to AT&T Technical Services Company, Inc. (ARIN); resources moved: AS3555"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210412.gz","retrieved_at":"2026-10-12T22:41:09+00:00","summary":"ARIN delegated statistics 2021-04-12 (produced 2021-04-12T14:00:13+00:00), before the report: assigned (dated 1994-04-15)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2021/delegated-arin-extended-20210414.gz","retrieved_at":"2026-10-12T22:41:14+00:00","summary":"ARIN delegated statistics 2021-04-14 (produced 2021-04-14T14:00:14+00:00), after the report: assigned (dated 1994-04-15)"}]}],"classification_history":{"91c1103011a88c48":[{"raw_change_id":563093,"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 GRC International, Inc. (ARIN) to AT&T Technical Services Company, Inc. (ARIN) on 2021-04-13 22:21 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 1994-04-15)"}}