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AS54021FIX FLYER, LLC

United StatesRegistryARIN

As of 11th November 2026, AS54021 (FIX FLYER, LLC), a network registered in the United States with ARIN, originates 4 IPv4 prefixes covering 1k addresses. By IPv4 address space that makes it the 36,499th-largest of the 80,743 networks we see originating IPv4, and the 8,245th-largest of 18,754 in the United States. It is seen behind 3 upstream networks, most often AS13335 (Cloudflare, Inc.) and AS19024 (Unitas Global). 25% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 75% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

4

IPv6 prefixes

0

IPv4 addresses

1k

IPv6 /64s

0

Upstream graph

The networks AS54021 is seen behind, one and two hops out, drawn from real AS paths.

AS54021Toward the internet core
Upstream graph for AS54021: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS54021FIX FLYER, LLCThis networkAS13335Cloudflare, Inc.AS13789Unitas GlobalAS19024Unitas GlobalAS2914NTT America, Inc.AS3356Lumen (Level 3)AS1828PacketFabric / Un…

Networks observed one and two hops upstream of AS54021 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

6

adjacent networks

Upstreams
350%
Peers
350%
Downstreams
00%

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

Upstreams of AS54021
NetworkCountryRelationshipPathsVantage pts
AS13335Cloudflare, Inc.USPeer15276
AS19024Unitas GlobalUSPeer7676
AS13789Unitas GlobalUSPeer2727

Prefixes

The largest blocks AS54021 originates, widest first.

Largest prefixes originated by AS54021
PrefixAddressesVisibility
66.150.102.0/2425676/76
74.201.134.0/2425627/76
74.201.180.0/2425676/76
162.217.102.0/2425676/76

Routing health

How AS54021'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

  • Valid25.0%1
  • Invalid25.0%1
  • No ROA50.0%2

Propagation

  • Globally propagated90% of full-feed peers or more75.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%25.0%1

Prefix sizes

IPv4 — 4 prefixes

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS54021 started or stopped in this period.

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