{"id":"INC-twilio-6vzm9lngb3cq","kind":"incident","aliases":[],"related":[],"title":"Twilio: SMS Delivery Delays and Failures from a Subset of Twilio Alphanumeric Sender IDs to Mobile China","description":"The incident has been resolved and SMS delivery from a subset of Twilio Alphanumeric Sender ID's to China Mobile network subscribers in China is operating normally.","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":"resolved","published_at":"2026-10-09T06:42:55+00:00","first_seen_at":"2026-10-23T19:12:22+00:00","triaged_at":"2026-10-23T20:17:58+00:00","updated_at":"2026-10-23T20:17:58+00:00","category":"vendor","confidence":null,"triage":null,"analyst_status":null,"analyst_note":null,"search":"'6vzm9lngb3cq':21A 'alphanumer':12A,41C 'china':17A,46C,51C 'delay':4A 'deliveri':3A,35C 'failur':6A 'id':14A,43C 'inc':19A 'inc-twilio-6vzm9lngb3cq':18A 'incid':23B,29C 'mobil':16A,47C 'network':48C 'normal':54C 'op':24B 'oper':53C 'resolv':32C 'sender':13A,42C 'sms':2A,25B,34C 'subscrib':49C 'subset':9A,38C 'twilio':1A,11A,20A,22A,26B,40C 'vendor':27B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-09T06:42:55+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"statuspage","external_id":"twilio:6vzm9lngb3cq","url":"https://stspg.io/75tlt46n30fr","severity":"medium","published_at":"2026-10-09T06:42:55+00:00","modified_at":"2026-10-23T03:55:35+00:00","first_seen_at":"2026-10-23T19:12:22+00:00","fetched_at":"2026-10-25T18:06:02+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}