### Answer --- Yes, Retell provides IP ranges you can whitelist with your telephony provider. [(1) ]() IP blocks for traffic: -

18.98.16.120/30

(All regions) -

143.223.88.0/21

(certain United States traffic) -

161.115.160.0/19

(certain United States traffic) For your setup in India, you should whitelist at minimum

18.98.16.120/30

as it covers all regions. Retell SIP server URI:

sip:sip.retellai.com

Transport methods supported: - TCP (Recommended) - UDP - TLS For inbound calls using different transports, append the transport method to the SIP server URL: - TCP:

sip:sip.retellai.com;transport=tcp

- UDP:

sip:sip.retellai.com;transport=udp

- TLS:

sip:sip.retellai.com;transport=tls

SRTP is also supported when transport is set to TLS.

​ To learn more, see the sources I considered: [[1] Custom Telephony Overview](https://docs.retellai.com/deploy/custom-telephony) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.

@AI Evy I want an IP address that is specifically within the Indian proximities. So do you have any such IP address for the VM which is on the Indian land?

### Answer Based on the available sources, Retell does not document India-specific IP addresses or VMs located on Indian land. The documented IP blocks are: -

18.98.16.120/30

(All regions) [(1) ]() -

143.223.88.0/21

(certain United States traffic) -

161.115.160.0/19

(certain United States traffic) The

18.98.16.120/30

block is designated for "All regions" and is what you would need to whitelist for your India setup. I don't have information about region-specific infrastructure in India. For questions about India-specific IP addresses or localized infrastructure, I'd recommend reaching out directly to Retell support. Check out these potentially useful sources: - [Documentation]() - [Hire certified Retell partner]()

​ To learn more, see the sources I considered: [[1] Discord message from @hard_coder_70919 on 2026-02-13](https://discord.com/channels/1186424376300679209/1186462578310910112/1471759976036044934) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.

​ To learn more, see the sources I considered: [[1] Connect to web call](https://docs.retellai.com/deploy/web-call) [[2] Platform Changelogs | Retell AI](https://www.retellai.com/changelog) ​

### Answer I don't have information about a "LiveKit option" in the available Retell AI documentation. The sources I have access to cover Retell's native WebRTC infrastructure for web calls, SIP trunking for custom telephony, and integrations with providers like Twilio and Telnyx—but there's no documented LiveKit integration or option. If you're looking for real-time voice communication options with Retell AI, the documented approaches are: - Web Calls via WebRTC using the Retell Web SDK [(1) ]() - SIP Trunking for custom telephony providers - Native phone numbers through Retell, Twilio, or Telnyx [(2) ]() Check out these potentially useful sources: - [Documentation]() - [Hire certified Retell partner]() Would you like a general answer based on my knowledge instead, or could you clarify what specific functionality you're trying to achieve? That may help me point you in the right direction within Retell's available options.

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.