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AS26557Carleton College

United StatesRegistryARIN

As of 10th November 2026, AS26557 (Carleton College), a network registered in the United States with ARIN, originates 4 IPv4 prefixes covering 32.8k addresses. By IPv4 address space that makes it the 5,511th-largest of the 80,723 networks we see originating IPv4, and the 1,897th-largest of 18,750 in the United States. It is seen behind 2 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS57 (Northern Lights GigaPoP). None of its announcements have a valid RPKI ROA. 75% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

4

IPv6 prefixes

0

IPv4 addresses

32.8k

IPv6 /64s

0

Upstream graph

The networks AS26557 is seen behind, one and two hops out, drawn from real AS paths.

AS26557Toward the internet core
Upstream graph for AS26557: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS26557Carleton CollegeThis networkAS57Northern Lights G…AS6939Hurricane Electri…AS2381WiscNetAS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS26557 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 AS26557
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer22374
AS57Northern Lights GigaPoPUSPeer62

Prefixes

The largest blocks AS26557 originates, widest first.

Largest prefixes originated by AS26557
PrefixAddressesVisibility
137.22.0.0/198.2k76/76
137.22.64.0/198.2k76/76
137.22.128.0/198.2k1/76
137.22.192.0/198.2k76/76

Routing health

How AS26557'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%4

Propagation

  • Globally propagated90% of full-feed peers or more75.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%25.0%1

Prefix sizes

IPv4 — 4 prefixes

Recent changes

Announcements that started or stopped since 11th Oct 2026.

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