# Telnyx Numbers: Identity — Documentation Index > Identity documentation within the Numbers section of the Telnyx developer docs (https://developers.telnyx.com). > This file: https://developers.telnyx.com/docs/development/llms/numbers-identity-llms-txt.md · Root index: https://developers.telnyx.com/llms.txt ## Number Lookup - [Telnyx Number Lookup API](https://developers.telnyx.com/docs/identity/number-lookup.md): Use the Telnyx Number Lookup API to retrieve carrier, line type, and portability data for any phone number worldwide before routing or messaging. - [Number lookup using Telnyx APIs](https://developers.telnyx.com/docs/identity/number-lookup/quickstart.md): Lookup a phone number and retrieve information. Start building on Telnyx today. ## Verify - [Telnyx Verify API](https://developers.telnyx.com/docs/identity/verify.md): Use the Telnyx Verify API to add carrier-grade two-factor authentication via SMS, voice, and WhatsApp one-time passwords (OTPs). - [Telnyx verify quickstart](https://developers.telnyx.com/docs/identity/verify/quickstart.md): Telnyx Verify helps to deliver a 2FA token to any mobile number and - [DTMF confirmation](https://developers.telnyx.com/docs/identity/verify/dtmf-confirm.md): Verify phone number ownership with a single keypress. No codes - press 1 to confirm. - [Custom templates](https://developers.telnyx.com/docs/identity/verify/custom-templates.md): Create and manage custom verification message templates for branded OTP communications with Telnyx Verify. - [Webhooks](https://developers.telnyx.com/docs/identity/verify/receiving-webhooks.md): Receive and verify Telnyx Verify webhooks for SMS, voice, WhatsApp, and PSD2 verifications. Includes payload structure, signing, and retry behavior. - [Security Best Practices](https://developers.telnyx.com/docs/identity/verify/security-best-practices.md): Protect your verification flows from fraud, abuse, and common attack vectors with these security best practices for Telnyx Verify. - [Rate Limiting & Fraud Prevention](https://developers.telnyx.com/docs/identity/verify/rate-limiting-fraud-prevention.md): Protect Telnyx Verify integrations from SMS pumping and toll fraud. Add server-side rate limits, geo-fencing, anomaly detection, and cost controls. - [Integration Examples](https://developers.telnyx.com/docs/identity/verify/integration-examples.md): Complete integration examples for login, registration, and payment verification flows using Telnyx Verify. ## API Reference (Identity) ### Number Lookup - [Lookup phone number data](https://developers.telnyx.com/api-reference/number-lookup/lookup-phone-number-data.md): Returns information about the provided phone number. ### Verify - [Trigger Call verification](https://developers.telnyx.com/api-reference/verify/trigger-call-verification.md): Starts a verification for the specified phone number and delivers its code in a voice call using the selected Verify profile. Returns the pending verification… - [Trigger Flash call verification](https://developers.telnyx.com/api-reference/verify/trigger-flash-call-verification.md): Starts a verification for the specified phone number and places a brief call with the code embedded in the caller ID. Returns the pending verification record. - [Trigger SMS verification](https://developers.telnyx.com/api-reference/verify/trigger-sms-verification.md): Starts a verification for the specified phone number and sends its code by SMS using the selected Verify profile. Returns the pending verification record. - [Trigger WhatsApp verification](https://developers.telnyx.com/api-reference/verify/trigger-whatsapp-verification.md): Starts a verification for the specified phone number and sends its code over WhatsApp using the selected Verify profile. Returns the pending verification recor… - [Retrieve verification](https://developers.telnyx.com/api-reference/verify/retrieve-verification.md): Returns the verification identified by ID, including its channel, phone number, Verify profile, timeout, and current status. - [Verify verification code by ID](https://developers.telnyx.com/api-reference/verify/verify-verification-code-by-id.md): Checks the supplied code, or the supplied status for a custom-code verification, against the verification identified by ID. The response indicates whether the… - [List verifications by phone number](https://developers.telnyx.com/api-reference/verify/list-verifications-by-phone-number.md): Returns a paginated list of verifications associated with the specified phone number. - [Verify verification code by phone number](https://developers.telnyx.com/api-reference/verify/verify-verification-code-by-phone-number.md): Submits a verification code for the specified phone number and Verify profile. The response indicates whether the code was accepted or rejected. - [List all Verify profiles](https://developers.telnyx.com/api-reference/verify/list-all-verify-profiles.md): Gets a paginated list of Verify profiles. - [Create a Verify profile](https://developers.telnyx.com/api-reference/verify/create-a-verify-profile.md): Creates a new Verify profile to associate verifications with. - [Delete Verify profile](https://developers.telnyx.com/api-reference/verify/delete-verify-profile.md): Deletes the specified Verify profile and returns the deleted profile record. - [Retrieve Verify profile](https://developers.telnyx.com/api-reference/verify/retrieve-verify-profile.md): Gets a single Verify profile. - [Update Verify profile](https://developers.telnyx.com/api-reference/verify/update-verify-profile.md): Updates the specified Verify profile's name, webhook destinations, language, daily spend limits, or channel-specific settings. Returns the updated profile. - [Retrieve Verify profile message templates](https://developers.telnyx.com/api-reference/verify/retrieve-verify-profile-message-templates.md): List all Verify profile message templates. - [Create message template](https://developers.telnyx.com/api-reference/verify/create-message-template.md): Create a new Verify profile message template. - [Update message template](https://developers.telnyx.com/api-reference/verify/update-message-template.md): Update an existing Verify profile message template.