asn.dev

Autonomous system

AS19174 AS19174 - China Unicom Americas Operations Ltd

Unclassified ARIN

IPv4 addresses 5.12K 10 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 4 1 downstream
Flagged prefixes 0 none

Summary

China Unicom (Americas) Operations Ltd

United States of America · AI-generated

business telecom us

AS19174 is operated by China Unicom (Americas) Operations Ltd.

What it's used for

  • The address space carries corporate and enterprise infrastructure, evidenced by netnames such as TENCENT, HOSTSPACE-NETWORK, and CNTVDOTCOM (CCTV.COM) alongside the primary CU-AMERICAS blocks.
  • The AS announces 5120 IPv4 addresses across 10 prefixes while maintaining only 5 observed neighbours, a ratio that suggests a business or enterprise network rather than a large-scale transit or residential access provider.

Notable

  • Registrants are mixed; while most prefixes are registered to China Unicom (Americas) Operations Ltd, specific /24 blocks are registered to Tencent, Hostspace Networks LLC, and CCTV.COM, indicating leased or allocated space for specific corporate tenants.
  • The inventory consists of 10 IPv4 prefixes with no announced IPv6 prefixes, reflecting a purely IPv4-based operational footprint in the United States.

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

4 upstream, 1 downstream and 5 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3356Level 3 Parent, LLC325
AS174Cogent Communications, LLC46
AS701Verizon Business40
AS4837CHINA UNICOM China169 Backbone2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, 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 10 prefixes · 5.12K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America10

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS19174
Registry name
AS19174
Registrant
China Unicom (Americas) Operations Ltd
Abuse contact
ho-luos@chinaunicom.cn
Registered
2007-08-07
Last changed
2023-09-25
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 8 with no ROA
ROAs
0 authorising AS19174
ASPA
no ASPA record
IRR
100% registered · 8 of 8 announcements
Route objects
9 naming AS19174

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: 442 networks and 1,783 prefixes, as published 2026-10-17. 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