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Autonomous System

AS131965

Xserver Inc.

Announced IPs
165,120
CIDR prefixes
26
ASN
AS131965

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.

69/100
Moderate
How this score is built

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

Network profile

Source: PeeringDB →
Network type Content
Traffic level 50-100Gbps
Geographic scope Asia Pacific
Traffic ratio Mostly Outbound
Peering policy Open
IRR record AS-XSERVER-131965

Present at 5 internet exchanges: BBIX Tokyo, JPIX OSAKA, BBIX Osaka, JPIX TOKYO, JPNAP Osaka

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
153.115.0.0/16 65.5K
0.0%
Xserver Inc. JP
162.43.0.0/17 32.8K
55.3%
Xserver Inc. JP Tokyo Roppongi
85.131.192.0/18 16.4K
30.6%
Xserver Inc. JP
183.90.224.0/19 8.2K
23.2%
Xserver Inc. JP
157.112.144.0/20 4.1K
22.6%
Xserver Inc. JP
157.112.176.0/20 4.1K
19.1%
Xserver Inc. JP
183.181.80.0/20 4.1K
50.2%
Xserver Inc. JP
210.131.208.0/20 4.1K
52.2%
Xserver Inc. JP
220.158.16.0/20 4.1K
40.3%
Xserver Inc. JP
222.228.0.0/20 4.1K
0.0%
Xserver Inc. JP
222.228.64.0/20 4.1K
0.3%
Xserver Inc. JP
120.136.8.0/21 2.0K
12.0%
Xserver Inc. JP
202.254.232.0/21 2.0K
31.7%
Xserver Inc. JP
103.3.0.0/22 1.0K
36.3%
Xserver Inc. JP
103.54.156.0/22 1.0K
2.3%
Xserver Inc. JP
175.28.4.0/22 1.0K
23.3%
Xserver Inc. JP
183.181.96.0/22 1.0K
78.4%
Xserver Inc. JP
202.226.36.0/22 1.0K
40.4%
Xserver Inc. JP
202.233.64.0/22 1.0K
56.2%
Xserver Inc. JP
223.27.68.0/22 1.0K
7.1%
Xserver Inc. JP
103.141.96.0/23 512
64.3%
Xserver Inc. JP
183.181.78.0/23 512
40.2%
Xserver Inc. JP
210.157.78.0/23 512
54.5%
Xserver Inc. JP
202.210.8.0/24 256
65.6%
Xserver Inc. JP
202.237.154.0/24 256
0.0%
Xserver Inc. JP
202.240.141.0/24 256
0.8%
Xserver Inc. JP

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS131965 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
120.136.8.0/21 4,216 2026-07-18 10:52:47
120.136.8.0/22 4,214 2026-07-18 10:52:47
120.136.12.0/22 4,206 2026-07-18 10:52:47
157.112.144.0/21 4,011 2026-07-18 10:52:47
157.112.184.0/21 4,009 2026-07-18 10:52:47
157.112.152.0/21 4,007 2026-07-18 10:52:47
157.112.144.0/20 4,001 2026-07-18 10:52:47
157.112.176.0/21 3,997 2026-07-18 10:52:47
157.112.176.0/20 3,991 2026-07-18 10:52:47
175.28.4.0/22 3,976 2026-07-18 10:52:47
175.28.4.0/23 3,976 2026-07-18 10:52:47
175.28.6.0/23 3,963 2026-07-18 10:52:47
85.131.192.0/18 3,928 2026-07-18 10:52:15
153.115.0.0/16 3,921 2026-07-18 10:52:47
223.27.69.0/24 3,840 2026-07-18 10:52:47
222.228.0.0/20 3,815 2026-07-18 10:52:47
223.27.70.0/24 3,815 2026-07-18 10:52:47
223.27.71.0/24 3,813 2026-07-18 10:52:47
222.228.64.0/20 3,813 2026-07-18 10:52:47
103.3.0.0/22 3,782 2026-07-18 10:52:15
202.240.141.0/24 3,781 2026-07-18 10:52:47
210.157.78.0/23 3,768 2026-07-18 10:52:47
103.54.156.0/22 3,766 2026-07-18 10:52:15
202.237.154.0/24 3,759 2026-07-18 10:52:47
223.27.68.0/24 3,759 2026-07-18 10:52:47
202.210.8.0/24 3,756 2026-07-18 10:52:47
220.158.16.0/20 3,747 2026-07-18 10:52:47
162.43.0.0/17 3,744 2026-07-18 10:52:47
103.141.96.0/24 3,736 2026-07-18 10:52:15
103.141.97.0/24 3,735 2026-07-18 10:52:15
103.141.96.0/23 3,734 2026-07-18 10:52:15
162.43.112.0/21 3,730 2026-07-18 10:52:47
210.131.208.0/20 3,725 2026-07-18 10:52:47
183.181.98.0/23 3,725 2026-07-18 10:52:47
183.90.224.0/20 3,722 2026-07-18 10:52:47
223.27.68.0/22 3,721 2026-07-18 10:52:47
183.181.96.0/23 3,716 2026-07-18 10:52:47
183.181.96.0/22 3,709 2026-07-18 10:52:47
183.181.90.0/23 3,706 2026-07-18 10:52:47
183.181.92.0/24 3,706 2026-07-18 10:52:47
202.226.36.0/22 3,705 2026-07-18 10:52:47
183.181.88.0/23 3,700 2026-07-18 10:52:47
183.90.224.0/19 3,700 2026-07-18 10:52:47
183.181.94.0/24 3,693 2026-07-18 10:52:47
202.254.232.0/22 3,690 2026-07-18 10:52:47
183.181.80.0/22 3,690 2026-07-18 10:52:47
202.254.232.0/21 3,689 2026-07-18 10:52:47
183.181.79.0/24 3,687 2026-07-18 10:52:47
183.181.84.0/22 3,686 2026-07-18 10:52:47
183.181.78.0/23 3,682 2026-07-18 10:52:47

Showing top 50 of 60 announced prefixes by sample volume.

Frequently Asked Questions

What is AS131965?

AS131965 is an Autonomous System Number assigned to Xserver Inc.. 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 AS131965 announce?

AS131965 announces 165.1K IPv4 addresses distributed across 26 routed CIDR prefixes. The network is registered in Japan.

Who operates AS131965?

AS131965 is operated by Xserver Inc.. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.

What country is AS131965 registered in?

AS131965 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-18 11:10:35 UTC
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