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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 v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
192.25.4.0/22 1.0K
2.1%
Keysight Technologies, Inc US Colorado Fort Collins
192.25.2.0/23 512
3.5%
Keysight Technologies, Inc US
192.25.6.0/23 512
0.0%
Keysight Technologies, Inc US Colorado Fort Collins
192.6.21.0/24 256
8.2%
Keysight Technologies, Inc US
192.25.1.0/24 256
27.7%
Keysight Technologies, Inc US
192.25.5.0/24 256
0.0%
Keysight Technologies, Inc US
192.25.19.0/24 256
2.0%
Keysight Technologies, Inc US
192.25.21.0/24 256
5.9%
Keysight Technologies, Inc US
192.25.22.0/24 256
0.4%
Keysight Technologies, Inc US
192.25.24.0/24 256
0.0%
Keysight Technologies, Inc US
192.25.34.0/24 256
0.0%
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
10.5%
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
0.0%
Keysight Technologies, Inc DE
192.25.19.0/25 128
0.0%
Keysight Technologies, Inc DE
192.25.4.0/26 64
0.0%
Keysight Technologies, Inc DE
192.25.4.64/26 64
0.0%
Keysight Technologies, Inc US
192.25.19.128/26 64
0.0%
Keysight Technologies, Inc DE
192.25.19.192/27 32
0.0%
Keysight Technologies, Inc DE
192.25.19.240/28 16
0.0%
Keysight Technologies, Inc DE
192.25.19.232/29 8
0.0%
Keysight Technologies, Inc DE
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
192.25.42.0/24 17,741 2026-08-01 11:26:50
192.25.46.0/24 17,640 2026-08-01 11:26:50
192.25.50.0/24 10,227 2026-08-01 11:10:52
192.6.21.0/24 10,227 2026-08-01 10:51:53
192.25.78.0/24 6,901 2026-08-01 10:34:07
192.25.4.0/24 5,894 2026-08-01 11:10:58
192.25.19.0/24 5,858 2026-08-01 11:10:58
192.25.24.0/24 5,542 2026-08-01 10:34:07
192.25.7.0/24 5,542 2026-08-01 10:34:07
192.25.2.0/24 5,540 2026-08-01 10:34:07
192.25.3.0/24 5,536 2026-08-01 10:34:07
192.25.6.0/24 5,536 2026-08-01 10:34:07
192.25.1.0/24 5,529 2026-08-01 10:34:07
192.25.5.0/24 5,529 2026-08-01 10:34:07
192.25.52.0/24 4,257 2026-08-01 11:10:58
192.25.55.0/24 4,219 2026-08-01 11:10:58
192.25.22.0/24 4,134 2026-08-01 11:10:56
192.25.21.0/24 4,128 2026-08-01 11:10:56
192.25.34.0/24 3,980 2026-08-01 10:33:36
203.78.194.160/28 70 2026-07-31 16:21:43

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: 2026-08-01 12:10:31 UTC
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