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Autonomous System

AS395266

Keysight Technologies, Inc

Announced IPs
4,864
CIDR prefixes
15
ASN
AS395266

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.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
192.25.4.0/22 1.0K
3.9%
Keysight Technologies, Inc US Colorado Colorado Springs
192.25.2.0/23 512
4.7%
Keysight Technologies, Inc US — —
192.25.6.0/23 512
3.1%
Keysight Technologies, Inc US Colorado Colorado Springs
192.6.21.0/24 256
10.9%
Keysight Technologies, Inc US — —
192.25.1.0/24 256
42.2%
Keysight Technologies, Inc US — —
192.25.5.0/24 256
6.6%
Keysight Technologies, Inc US — —
192.25.19.0/24 256
2.7%
Keysight Technologies, Inc US — —
192.25.21.0/24 256
9.8%
Keysight Technologies, Inc US — —
192.25.22.0/24 256
0.8%
Keysight Technologies, Inc US — —
192.25.24.0/24 256
0.0%
Keysight Technologies, Inc US — —
192.25.34.0/24 256
0.4%
Keysight Technologies, Inc US — —
192.25.42.0/24 256
0.0%
Keysight Technologies, Inc US — —
192.25.46.0/24 256
2.3%
Keysight Technologies, Inc US — —
192.25.50.0/24 256
0.4%
Keysight Technologies, Inc US California Santa Rosa
192.25.52.0/24 256
16.4%
Keysight Technologies, Inc US — —
192.25.55.0/24 256
0.4%
Keysight Technologies, Inc US — —
192.25.78.0/24 256
0.0%
Keysight Technologies, Inc US — —
192.25.4.128/25 128
3.1%
Keysight Technologies, Inc DE — —
192.25.19.0/25 128
3.1%
Keysight Technologies, Inc DE — —
192.25.4.0/26 64
3.1%
Keysight Technologies, Inc DE — —
192.25.4.64/26 64
3.1%
Keysight Technologies, Inc US — —
192.25.19.128/26 64
3.1%
Keysight Technologies, Inc DE — —
192.25.19.208/28 16
0.0%
Keysight Technologies, Inc DE — —
192.25.19.240/28 16
0.0%
Keysight Technologies, Inc DE — —
192.25.19.200/29 8
0.0%
Keysight Technologies, Inc DE — —
192.25.19.232/29 8
0.0%
Keysight Technologies, Inc US — —
192.25.19.192/30 4
0.0%
Keysight Technologies, Inc DE — —
192.25.19.196/30 4
0.0%
Keysight Technologies, Inc US — —
192.25.19.224/30 4
0.0%
Keysight Technologies, Inc DE — —
192.25.19.228/31 2
0.0%
Keysight Technologies, Inc DE — —
192.25.19.230/31 2
0.0%
Keysight Technologies, Inc US — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS395266 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
192.25.50.0/24 37,027 2026-10-22 12:52:06
192.6.21.0/24 36,666 2026-10-22 12:52:06
192.25.42.0/24 34,651 2026-10-22 12:10:28
192.25.46.0/24 34,626 2026-10-22 12:10:28
192.25.22.0/24 20,946 2026-10-22 12:52:06
192.25.21.0/24 20,930 2026-10-22 12:52:06
192.25.19.0/24 19,912 2026-10-22 12:52:06
192.25.4.0/24 19,870 2026-10-22 12:52:06
192.25.52.0/24 14,617 2026-10-22 12:10:28
192.25.55.0/24 14,583 2026-10-22 12:10:28
192.25.34.0/24 14,276 2026-10-22 13:03:05
192.25.78.0/24 12,917 2026-10-22 12:57:34
192.25.3.0/24 10,705 2026-10-22 12:10:28
192.25.1.0/24 10,671 2026-10-22 12:10:28
192.25.6.0/24 10,660 2026-10-22 12:10:28
192.25.5.0/24 10,639 2026-10-22 12:10:28
192.25.2.0/24 10,622 2026-10-22 12:10:28
192.25.24.0/24 10,615 2026-10-22 12:10:28
192.25.7.0/24 10,615 2026-10-22 12:10:28
203.78.194.160/28 360 2026-10-21 17:19:19

Frequently Asked Questions

What is AS395266?

AS395266 is an Autonomous System Number assigned to Keysight Technologies, 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 AS395266 announce?

AS395266 announces 4.9K IPv4 addresses distributed across 15 routed CIDR prefixes. The network is registered in United States.

Who operates AS395266?

AS395266 is operated by Keysight Technologies, Inc. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS395266 registered in?

AS395266 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-10-22 13:09:05 UTC
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