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AS36375University of Michigan

United StatesRegistryARINTypeEyeball

As of 23rd October 2026, AS36375 (University of Michigan), an access network registered in the United States with ARIN, originates 25 IPv4 prefixes covering 828k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 531st-largest of the 79,652 networks we see originating IPv4, and the 123rd-largest of 18,475 in the United States. It is seen behind 3 upstream networks, most often AS237 (Merit Network Inc.) and AS11537 (Internet2). 77% of its announcements have a valid RPKI ROA; 6 are RPKI-invalid. 69% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

25

IPv6 prefixes

1

IPv4 addresses

828k

IPv6 /64s

4.3B

Upstream graph

The networks AS36375 is seen behind, one and two hops out, drawn from real AS paths.

AS36375Toward the internet core
Upstream graph for AS36375: 7 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS36375University of Mic…This networkAS237Merit Network Inc.AS293ESnetAS11537Internet2AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS6939Hurricane Electri…AS2153CENIC

Networks observed one and two hops upstream of AS36375 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 AS36375
NetworkCountryRelationshipPathsVantage pts
AS237Merit Network Inc.USPeer1,344138
AS11537Internet2USPeer191
AS293ESnetUSPeer191

Prefixes

All 26

The largest blocks AS36375 originates, widest first.

Largest prefixes originated by AS36375
PrefixAddressesVisibility
35.0.0.0/1665.5k77/77
35.1.0.0/1665.5k77/77
35.2.0.0/1665.5k77/77
35.3.0.0/1665.5k77/77
35.4.0.0/1665.5k77/77
35.5.0.0/1665.5k77/77
35.6.0.0/1665.5k77/77
67.194.0.0/1665.5k77/77
141.211.0.0/1665.5k77/77
141.212.0.0/1665.5k77/77

Routing health

How AS36375'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

  • Valid76.9%20
  • Invalid23.1%6
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more69.2%18
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%30.8%8

Prefix sizes

IPv4 — 25 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS36375 started or stopped in this period.

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