subnet.im

AS394203Chicagoservers.org LLC

United StatesRegistryARIN

As of 10th November 2026, AS394203 (Chicagoservers.org LLC), a network registered in the United States with ARIN, originates 5 IPv4 prefixes covering 1.3k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 34,021st-largest of the 80,733 networks we see originating IPv4, and the 7,674th-largest of 18,751 in the United States. It is seen behind 2 upstream networks, most often AS23470 (ReliableSite.Net LLC) and AS20278 (Nexeon Technologies, Inc.). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

5

IPv6 prefixes

5

IPv4 addresses

1.3k

IPv6 /64s

328k

Upstream graph

The networks AS394203 is seen behind, one and two hops out, drawn from real AS paths.

AS394203Toward the internet core
Upstream graph for AS394203: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS394203Chicagoservers.or…This networkAS20278Nexeon Technologi…AS23470ReliableSite.Net …AS174Cogent Communicat…AS36352HostPapaAS1299Arelion (fka. Tel…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS394203 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS394203
NetworkCountryRelationshipPathsVantage pts
AS23470ReliableSite.Net LLCUSPeer553139
AS20278Nexeon Technologies, Inc.USPeer139139

Prefixes

The largest blocks AS394203 originates, widest first.

Largest prefixes originated by AS394203
PrefixAddressesVisibility
23.164.52.0/2425676/76
172.99.249.0/2425676/76
208.66.108.0/2425675/76
208.66.109.0/2425676/76
208.66.110.0/2425676/76
2602:fed2:7084::/4865.5k × /6462/63
2602:fed2:7110::/4865.5k × /6463/63
2602:fed2:7189::/4865.5k × /6462/63
2602:fed2:7194::/4865.5k × /6463/63
2602:fed2:7199::/4865.5k × /6463/63

Routing health

How AS394203'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%10
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%10
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 5 prefixes

IPv6 — 5 prefixes

  • /4865.5k × /64100.0%5

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS394203 started or stopped in this period.

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