Autonomous system
AS9929 CUII CHINA UNICOM Industrial Internet Backbone
Unclassified APNIC
Summary
China Unicom Industrial Internet Backbone (CUII)
isp transit business legacy
AS9929 (CUII) is held by China Unicom, and carries the network the company brands as its Industrial Internet Backbone. In older registry and BGP records the same ASN appears as China Netcom Backbone, a legacy of the China Netcom / China Unicom merger: this is one of the ASNs Unicom inherited from the northern Netcom half of the business.
What it's used for
RIS sees 225 IPv4 prefixes covering 733,184 addresses, plus a substantial 144 IPv6 prefixes out of Unicom's 2408::/20 block. The IPv4 space is the giveaway as to its lineage — large aggregates like 210.83.0.0/16, 210.53.0.0/16, 218.105.0.0/16 and 210.51.0.0/16, sitting in the same 210.x / 218.x ranges as the rest of the old Netcom estate. That is a lot of address space by any measure, but it is announced across only 25 observed neighbours. That combination — heavy address holdings, very few BGP adjacencies — says this is not a peering-hungry transit business selling to the open market. It is an internal Unicom backbone whose reachability is inherited from the parent group's much larger transit ASes rather than earned through its own interconnection.
Notable
- Distinct from China Unicom's main international backbone AS4837 and from Unicom's other regional ASNs. Describe the network in front of you: AS9929 is the smaller, separately routed Industrial Internet estate, not the mass-market Unicom eyeball network.
- Strong IPv6 build-out relative to its IPv4 footprint — 144 v6 prefixes is unusual for a network of this size and reflects China's state-driven IPv6 deployment push.
- It is a member of the
AS-CNCGROUPpeering set, the AS-SET that still carries the China Netcom name.
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
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
9 upstream, 12 downstream and 37 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 307 prefixes · 651K addresses IPv6 111 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CN | China | 418 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS9929- Registry name
- CUII
- Abuse contact
- hqs-ipabuse@chinaunicom.cn
- Registered
- 2008-09-04
- Last changed
- 2023-10-21
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- China Unicom Industrial Internet Backbone
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
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
- RPKI
- 96% valid · 380 valid, 16 with no ROA
- ROAs
- 400 authorising AS9929
- ASPA
- no ASPA record
- IRR
- 64% registered · 253 of 396 announcements 3 other origin
- Route objects
- 284 naming AS9929
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: 431 networks and 1,768 prefixes, as published 2026-10-12. 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