asn.dev

Autonomous system

AS24149 ZDNS Internet Domain Name System Beijing Engineering Resrarch Center Ltd.

Unclassified APNIC

IPv4 addresses 1.02K 3 prefixes
IPv6 prefixes 3 counted as prefixes, not addresses
Countries 1 mostly CN
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

ZDNS

China · AI-generated

business china dns

The AS handle ZDNS is held by ZDNS - Internet Domain Name System Beijing Engineering Resrarch Center Ltd.

What it's used for

  • The address space carries infrastructure for a DNS engineering center, as indicated by the netname ZDNS and the registrant IRT-ZDNS-CN across all announced prefixes.
  • The AS announces 1024 IPv4 addresses and 3 IPv6 prefixes, with only 2 observed neighbours. This low neighbour count relative to the address inventory suggests an internal corporate or specialized service estate rather than a transit or large-scale access network.

Notable

  • All registrants in the RDAP data align with the announcer, consistently showing ZDNS as the netname and IRT-ZDNS-CN as the registrant for the prefixes 150.242.158.0/23, 203.119.81.0/24, and 203.119.82.0/24.
  • The inventory consists of three IPv4 prefixes and three IPv6 prefixes, all located in China, reflecting a focused and segmented address allocation for the organization's operations.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS174Cogent Communications, LLC275
AS4641The Hong Kong Internet Exchange Limited89

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 3 prefixes · 1.02K addresses IPv6 3 prefixes

CountryNamePrefixes
CNChina6

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS24149
Registry name
ZDNS
Abuse contact
xingzhijie@knet.cn
Registered
2013-07-01
Last changed
2023-11-28
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 8 valid, 0 with no ROA
ROAs
8 authorising AS24149
ASPA
no ASPA record
IRR
100% registered · 8 of 8 announcements
Route objects
9 naming AS24149

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 443 networks and 1,784 prefixes, as published 2026-10-19. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check