Line Type Intelligence
: Get the line type of a phone number including mobile, landline, fixed VoIP, non-fixed VoIP, toll-free, and more.
SIM Swap
: Get information on the last SIM change for a mobile phone number.
Call Forwarding
: Get the unconditional call forwarding status of a mobile phone number.
Identity Match
: Get confirmation of ownership for a mobile phone number by comparing user-provided information against authoritative phone-based data sources.
You are currently viewing Version 1 content. Lookup v1 will be maintained for the time being, but any new features and development will be on v2. We strongly encourage you to do any new development with Lookup v2. Check out the migration guide or the API v2 Reference for more information.
Given a phone number, Twilio Lookup can identify the number's carrier and what type of phone it is (landline, mobile, or VoIP). In the U.S., Lookup can also retrieve the name of the person or business associated with a phone number (if available).
Type
specifies whether the phone is a
landline
,
mobile
, or
voip
phone
Carrier
is the name of the phone's carrier, like
Verizon Wireless
. Note that carriers rebrand frequently
(information)
Info
Note: Type voip is only returned for eligible U.S. numbers. VoIP detection is not available outside of the U.S and only landline or mobile will be returned for non-U.S. phone numbers.
If your phone number is invalid or incorrectly formatted, Twilio will return a 404 error.
Get a name associated with a phone number
Note: Caller name lookup is available for U.S. numbers only.
Lookup can also retrieve the name of the individual or business associated with a phone number. Simply pass a caller-name argument to your lookup request.
Lookup with Caller Name
Node.js
Python
C#
Java
Go
PHP
Ruby
twilio-cli
curl
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// Download the helper library from https://www.twilio.com/docs/node/install
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// Find your Account SID and Auth Token at twilio.com/console
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// and set the environment variables. See http://twil.io/secure