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AS217University of Minnesota

United StatesRegistryARIN

As of 27th September 2026, AS217 (University of Minnesota), a network registered in the United States with ARIN, originates 5 IPv4 prefixes covering 328k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 932nd-largest of the 79,523 networks we see originating IPv4, and the 240th-largest of 18,427 in the United States. It is seen behind 1 upstream network, most often AS57 (Northern Lights GigaPoP). 17% of its announcements have 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

1

IPv4 addresses

328k

IPv6 /64s

65.5k

Upstream graph

The networks AS217 is seen behind, one and two hops out, drawn from real AS paths.

AS217Toward the internet core
Upstream graph for AS217: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS217University of Min…This networkAS57Northern Lights G…AS2381WiscNetAS6939Hurricane Electri…

Networks observed one and two hops upstream of AS217 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS217
NetworkCountryRelationshipPathsVantage pts
AS57Northern Lights GigaPoPUSPeer469145

Prefixes

The largest blocks AS217 originates, widest first.

Largest prefixes originated by AS217
PrefixAddressesVisibility
128.101.0.0/1665.5k81/81
131.212.0.0/1665.5k81/81
134.84.0.0/1665.5k81/81
146.57.0.0/1665.5k81/81
160.94.0.0/1665.5k81/81
2001:470:22::/4865.5k × /6464/64

Routing health

How AS217'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

  • Valid16.7%1
  • Invalid0.0%0
  • No ROA83.3%5

Propagation

  • Globally propagated90% of full-feed peers or more100.0%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 5 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS217 started or stopped in this period.

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