subnet.im

AS395266Keysight Technologies, Inc

United StatesRegistryARIN

As of 24th October 2026, AS395266 (Keysight Technologies, Inc), a network registered in the United States with ARIN, originates 20 IPv4 prefixes covering 4.9k addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 15,833rd-largest of the 79,671 networks we see originating IPv4, and the 4,456th-largest of 18,487 in the United States. It is seen behind 10 upstream networks, most often AS3356 (Lumen (Level 3)) and AS174 (Cogent Communications, LLC). 4% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 96% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

20

IPv6 prefixes

6

IPv4 addresses

4.9k

IPv6 /64s

393k

Upstream graph

The networks AS395266 is seen behind, one and two hops out, drawn from real AS paths.

AS395266Toward the internet core
Upstream graph for AS395266: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS395266Keysight Technolo…This networkAS174Cogent Communicat…AS1273Vodafone Group PLCAS3356Lumen (Level 3)AS5606GTS Telecom SRLAS18106Viewqwest Pte LtdAS151326DCConnect Communi…AS6667Elisa OyjAS41811CONVERGENCE (GROU…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS215859Hetzner Cloud - S…

Networks observed one and two hops upstream of AS395266 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

21

adjacent networks

Upstreams
1048%
Peers
1152%
Downstreams
00%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS395266
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer1,185138
AS174Cogent Communications, LLCUSPeer19628
AS1273Vodafone Group PLCEUPeer14776
AS18106Viewqwest Pte LtdSGPeer9648
AS5606GTS Telecom SRLROPeer6262
AS9498Bharti Airtel Ltd.INPeer6262
AS139883SPTEL PTE. LTD.SGPeer5628
AS20904Cinia Oy (fka. Netplaza)FIPeer55
AS2914NTT America, Inc.USPeer55
AS4755TATA Communications (formerly VSNL)INPeer11

Prefixes

All 26

The largest blocks AS395266 originates, widest first.

Largest prefixes originated by AS395266
PrefixAddressesVisibility
192.6.21.0/2425676/76
192.25.1.0/2425675/76
192.25.2.0/2425675/76
192.25.3.0/2425675/76
192.25.4.0/2425676/76
192.25.5.0/2425675/76
192.25.6.0/2425675/76
192.25.7.0/2425675/76
192.25.19.0/2425676/76
192.25.21.0/2425676/76

Routing health

How AS395266's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid3.8%1
  • Invalid0.0%0
  • No ROA96.2%25

Propagation

  • Globally propagated90% of full-feed peers or more96.2%25
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%3.8%1

Prefix sizes

IPv4 — 20 prefixes

IPv6 — 6 prefixes

  • /4865.5k × /64100.0%6

Recent changes

Announcements that started or stopped since 24th Sept 2026.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.