subnet.im

AS393249University of British Columbia

CanadaRegistryARINTypeEyeball

As of 24th October 2026, AS393249 (University of British Columbia), an access network registered in Canada with ARIN, originates 43 IPv4 prefixes covering 288k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 1,001st-largest of the 79,642 networks we see originating IPv4, and the 34th-largest of 1,588 in Canada. It is seen behind 1 upstream network, most often AS271 (BCNET), and in front of 1 downstream network. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 98% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

43

IPv6 prefixes

5

IPv4 addresses

288k

IPv6 /64s

4.3B

Upstream graph

The networks AS393249 is seen behind, one and two hops out, drawn from real AS paths.

AS393249Toward the internet core
Upstream graph for AS393249: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS393249University of Bri…This networkAS271BCNETAS1299Arelion (fka. Tel…AS6327Shaw Communicatio…

Networks observed one and two hops upstream of AS393249 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
125%
Peers
250%
Downstreams
125%

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

Upstreams of AS393249
NetworkCountryRelationshipPathsVantage pts
AS271BCNETCAPeer3,731138

Prefixes

All 48

The largest blocks AS393249 originates, widest first.

Largest prefixes originated by AS393249
PrefixAddressesVisibility
137.82.0.0/1665.5k76/76
142.103.0.0/1665.5k76/76
128.189.128.0/1816.4k76/76
128.189.192.0/1816.4k76/76
206.87.0.0/1816.4k76/76
128.189.32.0/198.2k76/76
128.189.64.0/198.2k76/76
128.189.96.0/198.2k76/76
142.231.64.0/198.2k76/76
142.231.160.0/198.2k76/76

Routing health

How AS393249'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%48
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more97.9%47
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%2.1%1

Prefix sizes

IPv4 — 43 prefixes

IPv6 — 5 prefixes

  • /324.3B × /6420.0%1
  • /4016.8M × /6420.0%1
  • /4865.5k × /6460.0%3

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS393249 started or stopped in this period.

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