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AS53355Concordia University Wisconsin

United StatesRegistryARIN

As of 25th October 2026, AS53355 (Concordia University Wisconsin), a network registered in the United States with ARIN, originates 5 IPv4 prefixes covering 1.3k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 33,388th-largest of the 79,676 networks we see originating IPv4, and the 7,592nd-largest of 18,493 in the United States. It is seen behind 2 upstream networks, most often AS2381 (WiscNet) and AS18683 (Midwest Fiber Networks, LLC). 33% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 83% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

5

IPv6 prefixes

1

IPv4 addresses

1.3k

IPv6 /64s

65.5k

Upstream graph

The networks AS53355 is seen behind, one and two hops out, drawn from real AS paths.

AS53355Toward the internet core
Upstream graph for AS53355: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS53355Concordia Univers…This networkAS2381WiscNetAS18683Midwest Fiber Net…AS1299Arelion (fka. Tel…AS6939Hurricane Electri…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS53355 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 AS53355
NetworkCountryRelationshipPathsVantage pts
AS2381WiscNetUSPeer291139
AS18683Midwest Fiber Networks, LLCUSPeer8076

Prefixes

The largest blocks AS53355 originates, widest first.

Largest prefixes originated by AS53355
PrefixAddressesVisibility
38.103.94.0/242564/76
147.160.61.0/2425676/76
192.149.245.0/2425676/76
198.150.44.0/2425676/76
198.150.234.0/2425676/76
2620:22::/4865.5k × /6463/63

Routing health

How AS53355'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

  • Valid33.3%2
  • Invalid0.0%0
  • No ROA66.7%4

Propagation

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

Prefix sizes

IPv4 — 5 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 25th Sept 2026.

  • Announced147.160.61.0/2417th Oct 2026
  • Announced38.103.94.0/2417th Oct 2026
  • Withdrawn147.160.61.0/2416th Oct 2026
  • Withdrawn38.103.94.0/2416th Oct 2026

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