subnet.im

AS54218SYSTEM36 L.L.C.

United StatesRegistryARIN

As of 11th November 2026, AS54218 (SYSTEM36 L.L.C.), a network registered in the United States with ARIN, originates 1 IPv4 prefix covering 256 addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 59,976th-largest of the 80,743 networks we see originating IPv4, and the 13,086th-largest of 18,754 in the United States. It is seen behind 6 upstream networks, most often AS917 (Misaka Network, Inc.) and AS53667 (FranTech Solutions). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 83% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

5

IPv4 addresses

256

IPv6 /64s

33.8M

Upstream graph

The networks AS54218 is seen behind, one and two hops out, drawn from real AS paths.

AS54218Toward the internet core
Upstream graph for AS54218: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS54218SYSTEM36 L.L.C.This networkAS917Misaka Network, I…AS16509Amazon.com, Inc.AS35487Misaka Network, I…AS53667FranTech SolutionsAS59678SYSTEM36 LLCAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS60068Datacamp Limited …AS174Cogent Communicat…AS6939Hurricane Electri…AS5508124 SHELLS

Networks observed one and two hops upstream of AS54218 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

12

adjacent networks

Upstreams
650%
Peers
650%
Downstreams
00%

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

Upstreams of AS54218
NetworkCountryRelationshipPathsVantage pts
AS917Misaka Network, Inc.USPeer139139
AS53667FranTech SolutionsUSPeer6363
AS16509Amazon.com, Inc.USPeer6262
AS59678SYSTEM36 LLCUSPeer4141
AS35487Misaka Network, Inc.USPeer3939
AS57695Misaka Network, Inc.USPeer2323

Prefixes

The largest blocks AS54218 originates, widest first.

Largest prefixes originated by AS54218
PrefixAddressesVisibility
140.235.128.0/2425676/76
2602:fa9b:800::/4016.8M × /6441/63
2602:fa9b:900::/4016.8M × /6463/63
2a05:dfc1:1004::/4865.5k × /6462/63
2a05:dfc1:1005::/4865.5k × /6462/63
2a05:dfc1:1014::/4865.5k × /6463/63

Routing health

How AS54218'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

  • Valid100.0%6
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more83.3%5
  • Partially propagated40% to 90%16.7%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 5 prefixes

  • /4016.8M × /6440.0%2
  • /4865.5k × /6460.0%3

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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