asn.dev

Autonomous system

AS135273 NTCASIA-AS-AP NTC ASIA LIMITED

Unclassified APNIC

IPv4 addresses 6.14K 3 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly HK
Exchanges 0 recorded by PCH
Upstreams 2 6 downstream
Flagged prefixes 0 none

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, 6 downstream and 11 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS9902NEOCOMISP LIMITED, IPTX Transit and Network Service Provider in Cambodia.1,356
AS1299Arelion Sweden AB96

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, 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 · 6.14K addresses IPv6 0 prefixes

CountryNamePrefixes
HKHong Kong3

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS135273
Registry name
NTCASIA-AS-AP
Registrant
NTC ASIA LIMITED
Abuse contact
noc@ntcasia.com.hk
Registered
2016-03-21
Last changed
2020-09-09
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 25 valid, 0 with no ROA
ROAs
25 authorising AS135273
ASPA
no ASPA record
IRR
100% registered · 25 of 25 announcements
Route objects
58 naming AS135273

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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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