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Autonomous System

AS131273

CORE WINNER CO.,LIMITED

Announced IPs
1,536
CIDR prefixes
6
ASN
AS131273

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.

53/100
Caution
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 3 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS131273 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
150.116.80.0/24 AS131273, AS131679 2026-07-18 11:37:44
103.117.106.0/24 AS131273, AS131679 2026-07-18 11:37:44
156.242.9.0/24 AS131273, AS131679 2026-07-17 19:22:38

Network profile

Source: PeeringDB →
Geographic scope Not Disclosed
Traffic ratio Not Disclosed
Peering policy Open

Present at 1 internet exchange: TPIX-TW

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
103.68.138.0/24 256
0.0%
CORE WINNER CO.,LIMITED TW
103.117.106.0/24 256
0.0%
CORE WINNER CO.,LIMITED TW
103.161.79.0/24 256
0.0%
CORE WINNER CO.,LIMITED TW
103.166.81.0/24 256
0.0%
CORE WINNER CO.,LIMITED TW
150.116.80.0/24 256
0.0%
CORE WINNER CO.,LIMITED TW
156.242.9.0/24 256
0.0%
CORE WINNER CO.,LIMITED SC
103.68.138.128/25 128
0.0%
TW
103.68.138.64/26 64
0.0%
TW
103.68.138.0/27 32
0.0%
TW
103.68.138.32/28 16
0.0%
TW
103.68.138.48/29 8
0.0%
TW
103.68.138.60/30 4
0.0%
TW
103.68.138.56/31 2
0.0%
TW
103.68.138.58/31 2
0.0%
SG

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS131273 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
103.68.138.0/24 10,328 2026-07-18 11:20:59
103.117.106.0/24 5,296 2026-07-18 11:20:59
156.242.9.0/24 5,126 2026-07-18 11:20:59
150.116.80.0/24 5,018 2026-07-18 11:20:59
103.161.79.0/24 2,751 2026-07-18 10:52:03
103.166.81.0/24 1,545 2026-07-03 02:54:34

Frequently Asked Questions

What is AS131273?

AS131273 is an Autonomous System Number assigned to CORE WINNER CO.,LIMITED. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS131273 announce?

AS131273 announces 1.5K IPv4 addresses distributed across 6 routed CIDR prefixes. The network is registered in Taiwan.

Who operates AS131273?

AS131273 is operated by CORE WINNER CO.,LIMITED. The organization is based in Taiwan. You can view all IP ranges and related ASNs on the organization page.

What country is AS131273 registered in?

AS131273 is registered in Taiwan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-18 11:40:32 UTC
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