A2P 10DLC Campaign Vetting Delays: Twilio cannot approve 10DLC Campaigns ourselves, and must rely on third parties who control our connections to carriers to sign off. These external processes are creating several week delays for our customers. We continue to escalate these issues and are working to reduce delays wherever possible. Further details will be shared in the Campaign Vetting Changes article as they become available.

Sending multiple requests to Twilio Lookup API

Twilio's Lookup API currently only handles a single phone number per request. If you have a batch of several phone numbers you would like to lookup, we recommend that you make multiple requests to Twilio's API.

For more information about the Lookup API, see the following resources:

Notice: Responses to your requests containing HTTP 429 or Error code 20429 indicate that you have hit the API request concurrency limit. For more information, see Twilio API response Error 429 "Too Many Requests".

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