Source note · Network-based location for E911 across platforms
RFC 5985 warns that a NAT or VPN between device and LIS can make the returned location inaccurate, and advises devices to perform LIS discovery and an initial query before connecting to a VPN, SOCKS or proxy server.
Checked 2026-10-14
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- HELD
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 5985
- Checked
- 2026-10-14
Sources
- HTTP-Enabled Location Delivery (HELD) — IETF · tier 1 standards and regulators · Sections 4.1, 4.1.1, 4.1.2
Cite this note
APA
WarmTransfer. (2026, October 14). Network-based location for E911 across platforms: source note e911-network-location-discovery-held-nat-vpn. WarmTransfer. https://warmtransfer.net/knowledge/claims/e911-network-location-discovery-held-nat-vpn
BibTeX
@misc{warmtransfer-claim-e911-network-location-discovery-held-nat-vpn,
title = {Network-based location for E911 across platforms: source note e911-network-location-discovery-held-nat-vpn},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/e911-network-location-discovery-held-nat-vpn},
note = {Source note e911-network-location-discovery-held-nat-vpn, checked 2026-10-14}
}