{"id":"INC-twilio-ry5cj1mk6r60","kind":"incident","aliases":[],"related":[],"title":"Twilio: Voice Call Failures from a Subset of Twilio Mobile Numbers to Argentina","description":"Twilio customers may be experiencing voice call failures from a subset of Twilio Mobile Numbers to Telefonica network subscribers in Argentina. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.","summary":null,"severity":"medium","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Twilio","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["incident","ops","sms","twilio","vendor"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-05T18:34:08+00:00","first_seen_at":"2026-11-05T18:35:34+00:00","triaged_at":"2026-11-05T18:36:05+00:00","updated_at":"2026-11-05T19:14:29+00:00","category":"vendor","confidence":null,"triage":null,"analyst_status":null,"analyst_note":null,"search":"'1':64C 'anoth':61C 'argentina':13A,44C 'avail':73C 'becom':72C 'call':3A,30C 'caus':50C 'custom':25C 'experienc':28C 'failur':4A,31C 'hour':65C 'identifi':48C 'inc':15A 'inc-twilio-ry5cj1mk6r60':14A 'incid':19B 'inform':71C 'issu':57C 'may':26C 'mobil':10A,37C 'network':41C 'number':11A,38C 'op':20B 'provid':60C 'resolv':55C 'ry5cj1mk6r60':17A 'sms':21B 'soon':68C 'subscrib':42C 'subset':7A,34C 'team':46C 'telefonica':40C 'twilio':1A,9A,16A,18A,22B,24C,36C 'updat':62C 'vendor':23B 'voic':2A,29C 'work':53C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":null,"audience":null,"plain_action":null,"pkeys":["twilio"],"ptokens":["twilio"],"labels":["incident","medium","ops","sms","twilio","vendor"],"campaign_type":null,"first_public_at":"2026-11-05T18:34:08+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"statuspage","external_id":"twilio:ry5cj1mk6r60","url":"https://stspg.io/t4vp65pctxst","severity":"medium","published_at":"2026-11-05T18:34:08+00:00","modified_at":"2026-11-05T19:12:57+00:00","first_seen_at":"2026-11-05T18:35:34+00:00","fetched_at":"2026-11-05T19:20:50+00:00","note":null}],"documents":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}