AS18403 (FPT-VN - FPT Telecom Company) has at least 21 IP address(es) with domains observed in our passive DNS data. The IPs below are observed addresses with reverse-IP matches; they are a sample for investigation, not proof of whole-AS ownership or current hosting.
IP addresses observed in AS18403
21 observed IPs shown. Explore AS18403 on Profundis.io — history, exports and broader context →
Frequently asked questions
What is AS18403?
AS18403 (FPT-VN - FPT Telecom Company) is an Autonomous System — a block of IP addresses operated under a single routing policy. This page lists observed IPs in the AS that have passive DNS reverse-IP matches.
How do I find observed domains in AS18403?
Each IP address above links to a reverse-IP result page. For deeper history, exports, and broader AS investigation, use Profundis.io.
Last updated 2026-06-13.