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CIDR
/17 · 32.8K IPs
ASN
CHINA UNICOM China169 Backbone
Reverse DNS
No PTR record
Blocklisted
Checking…
Scanning blocklists

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

76/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network Allocation for 123.156.128.2

CIDR range
123.156.128.0/17
IP range (int)
2,073,853,952 — 2,073,886,719
Prefix length
/17
Organization
CHINA UNICOM China169 Backbone
ASN
AS4837
ASN name
CHINA UNICOM China169 Backbone
Location
Yiwu, Zhejiang, China
Coordinates
29.318700, 120.081000
Accuracy radius
20 km
Regional Internet Registry
APNIC
Allocated
2007-02-28
Data source(s)
maxmind_city, ipinfo_lite, maxmind_asn, maxmind_country
Last updated
2026-07-21 04:08:27

Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.

Announced prefix
Origin AS
Announcement samples
11,970
Last seen
2026-07-24 22:34:34

Frequently Asked Questions

Who owns 123.156.128.2?

123.156.128.2 is allocated to CHINA UNICOM China169 Backbone (AS4837), registered in Yiwu, China.

Where is 123.156.128.2 located?

The geolocation for 123.156.128.2 maps to Yiwu, China based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.

What network is 123.156.128.2 on?

123.156.128.2 belongs to the 123.156.128.0/17 network block announced by AS4837. This range contains 32,768 addresses.

Does 123.156.128.2 have a reverse DNS record?

Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.

Neighbors

Other addresses in the same /24.

Related

Last updated: 2026-07-24 22:44:00 UTC
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