Twilio states that all customer localized SIP trunk domains resolve to the same A record, so the personal domain both identifies the trunk and controls where traffic is routed.

Checked 2026-09-24

Vendor
Twilio
Product
Elastic SIP Trunking
Subsystem
termination addressing
Deployment
multi-tenant
Region
not restricted
Release range
current as of 2026-09-24
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). DNS SRV and service discovery for SIP: source note dns-srv-voice-twilio-shared-a. WarmTransfer. https://warmtransfer.net/knowledge/claims/dns-srv-voice-twilio-shared-a

BibTeX

@misc{warmtransfer-claim-dns-srv-voice-twilio-shared-a,
  title  = {DNS SRV and service discovery for SIP: source note dns-srv-voice-twilio-shared-a},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/dns-srv-voice-twilio-shared-a},
  note   = {Source note dns-srv-voice-twilio-shared-a, checked 2026-09-24}
}

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