AS21859 (ZEN-ECN - Zenlayer Inc) has at least 5 IP address(es) with domains observed in our passive DNS data. This public page summarizes observed network coverage without publishing an ASN-wide IP seed list.
Network investigation
Observed IP samples for AS21859 are available in Profundis with history, exports, and broader context.
Continue AS21859 investigation on Profundis.io →
Frequently asked questions
What is AS21859?
AS21859 (ZEN-ECN - Zenlayer Inc) is an Autonomous System — a block of IP addresses operated under a single routing policy. This page summarizes observed reverse-IP coverage for the AS.
How do I find observed domains in AS21859?
Use Profundis.io for the complete AS investigation, exports, and broader historical DNS context.
Last updated 2026-07-19.