subnet.im

AS11403NYI

United StatesRegistryARIN

As of 26th September 2026, AS11403 (NYI), a network registered in the United States with ARIN, originates 28 IPv4 prefixes covering 49.7k addresses and 4 IPv6 prefixes. By IPv4 address space that makes it the 4,469th-largest of the 79,516 networks we see originating IPv4, and the 1,587th-largest of 18,424 in the United States. It is seen behind 19 upstream networks, most often AS6461 (Zayo Bandwidth) and AS3356 (Lumen (Level 3)), and in front of 7 downstream networks. None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

28

IPv6 prefixes

4

IPv4 addresses

49.7k

IPv6 /64s

9.1B

Upstream graph

The networks AS11403 is seen behind, one and two hops out, drawn from real AS paths.

AS11403Toward the internet core
Upstream graph for AS11403: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS11403NYIThis networkAS3257GTT Communication…AS3356Lumen (Level 3)AS6461Zayo BandwidthAS9002RETN LimitedAS18450WebNX, Inc.AS6667Elisa OyjAS398465Rackdog LLCAS3549Lumen (fka. Globa…AS2914NTT America, Inc.AS32590Valve CorporationAS51907Kanton ZugAS6939Hurricane Electri…

Networks observed one and two hops upstream of AS11403 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

76

adjacent networks

Upstreams
1925%
Peers
5066%
Downstreams
79%

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

Upstreams of AS11403
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer2,278140
AS3356Lumen (Level 3)USPeer1,32392
AS3257GTT Communications Inc.USPeer58874
AS18450WebNX, Inc.USPeer16281
AS9002RETN LimitedGBPeer1048
AS6939Hurricane Electric LLCUSPeer4813
AS25091IP-Max SACHPeer465
AS6667Elisa OyjFIPeer382
AS18106Viewqwest Pte LtdSGPeer342
AS49544i3D.net B.VNLPeer242

Prefixes

All 32

The largest blocks AS11403 originates, widest first.

Largest prefixes originated by AS11403
PrefixAddressesVisibility
64.90.160.0/198.2k81/81
64.147.96.0/198.2k81/81
173.228.128.0/198.2k81/81
66.111.0.0/204.1k81/81
67.221.176.0/204.1k81/81
96.47.64.0/204.1k81/81
198.3.136.0/212k81/81
207.12.88.0/212k81/81
144.168.48.0/221k81/81
162.208.116.0/221k81/81

Routing health

How AS11403'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%32

Propagation

  • Globally propagated90% of full-feed peers or more100.0%32
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 28 prefixes

IPv6 — 4 prefixes

  • /324.3B × /6450.0%2
  • /36268M × /6450.0%2

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS11403 started or stopped in this period.

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