asn.dev

Autonomous system

AS17789 CNCGROUP-SH-IDC CNCGROUP IP network of ShangHai IDC

Unclassified DROP-listed space APNIC

IPv4 addresses 65.28K 8 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly CN
Exchanges 0 recorded by PCH
Upstreams 3 0 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

3 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS136826PT TITIK TERANG MAKMUR86
AS134196ANYUN INTERNET TECHNOLOGY (HK) CO.,LIMITED28
AS55933Cloudie Limited2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, 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 8 prefixes · 65.28K addresses IPv6 0 prefixes

CountryNamePrefixes
CNChina8

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS17789
Registry name
CNCGROUP-SH-IDC
Abuse contact
hqs-ipabuse@chinaunicom.cn
Registered
2008-09-04
Last changed
2023-10-21
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS17789
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS17789

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.

8 DROP matches Announced space overlapping the DROP prefix list.

AnnouncedDROP entryRecord
27.99.128.0/1727.99.128.0/17SBL677409
42.0.128.0/1842.0.128.0/17SBL677405
42.0.192.0/2142.0.128.0/17SBL677405
42.0.201.0/2442.0.128.0/17SBL677405
42.0.202.0/2342.0.128.0/17SBL677405
42.0.204.0/2242.0.128.0/17SBL677405
42.0.208.0/2042.0.128.0/17SBL677405
42.0.224.0/1942.0.128.0/17SBL677405

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,778 prefixes, as published 2026-10-20. 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