asn.dev

Autonomous system

AS24138 CTTNET China TieTong Telecommunications Corporation

Unclassified DROP-listed space APNIC Cable/DSL/ISP

IPv4 addresses 558K 180 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly CN
Exchanges 0 recorded by PCH
Upstreams 2 8 downstream
Flagged prefixes 0 none

Summary

China TieTong Telecommunications Corporation

China · AI-generated

isp residential china access

The AS handle CTTNET is held by China TieTong Telecommunications Corporation.

What it's used for

  • The address space carries netnames CTTNET and NORTHSTAR, with registrants IRT-CTTNET-CN and North Star Information Hi.tech Ltd. Co. respectively.
  • The AS announces 558080 IPv4 addresses across 174 prefixes, while maintaining only 10 observed neighbours. This high address-to-neighbour ratio indicates an access or eyeball network role rather than a transit provider.

Notable

  • Registrants include both IRT-CTTNET-CN and North Star Information Hi.tech Ltd. Co., with the latter holding specific blocks like 110.56.0.0/17 and 111.132.128.0/17.
  • The inventory consists of 174 IPv4 prefixes with no IPv6 prefixes announced, showing a purely IPv4-based address estate.

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, 8 downstream and 10 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS9394China TieTong Telecommunications Corporation12,898
AS56048China Mobile Communicaitons Corporation7

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, 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 180 prefixes · 558K addresses IPv6 0 prefixes

CountryNamePrefixes
CNChina180

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS24138
Registry name
CTTNET
Abuse contact
liuxin15@cmtt.chinamobile.com
Registered
2008-09-04
Last changed
2023-11-28
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
China Tietong
Network type
Cable/DSL/ISP
Scope
Regional
Traffic ratio
Mostly Inbound
Peering policy
Open
Present at
1 exchanges

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
94% valid · 246 valid, 9 with no ROA 7 RPKI-invalid
ROAs
255 authorising AS24138
ASPA
no ASPA record
IRR
58% registered · 151 of 262 announcements 5 other origin
Route objects
303 naming AS24138

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.

1 DROP match Announced space overlapping the DROP prefix list.

AnnouncedDROP entryRecord
110.172.200.0/21110.172.192.0/20SBL677322

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,775 prefixes, as published 2026-10-11. 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