subnet.im

AS577Bell Canada

CanadaRegistryARINTypeEyeball

As of 10th November 2026, AS577 (Bell Canada), an access network registered in Canada with ARIN, originates 16,156 IPv4 prefixes covering 11.2M addresses and 72 IPv6 prefixes. By IPv4 address space that makes it the 66th-largest of the 80,723 networks we see originating IPv4, and the 2nd-largest of 1,605 in Canada. It is seen behind 24 upstream networks, most often AS1403 (EBOX) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 322 downstream networks. 99% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 10% of its routes reach at least 90% of full-feed peers, and 3 prefixes are also originated by another network.

At a glance

IPv4 prefixes

16,156

IPv6 prefixes

72

IPv4 addresses

11.2M

IPv6 /64s

4.5B

Upstream graph

The networks AS577 is seen behind, one and two hops out, drawn from real AS paths.

AS577Toward the internet core
Upstream graph for AS577: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS577Bell CanadaThis networkAS1299Arelion (fka. Tel…AS1403EBOXAS2914NTT America, Inc.AS3356Lumen (Level 3)AS6453TATA Communicatio…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS6939Hurricane Electri…AS49544i3D.net B.VAS3549Lumen (fka. Globa…AS8220COLTAS35280F5 Networks SARL

Networks observed one and two hops upstream of AS577 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

675

adjacent networks

Upstreams
244%
Peers
32949%
Downstreams
32248%

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

Upstreams of AS577
NetworkCountryRelationshipPathsVantage pts
AS1403EBOXCAPeer879,3301
AS1299Arelion (fka. Telia Carrier)SEPeer73,40775
AS3356Lumen (Level 3)USPeer44,88053
AS6453TATA Communications (America) IncUSPeer39,54262
AS2914NTT America, Inc.USPeer37,98329
AS3257GTT Communications Inc.USPeer24,77257
AS174Cogent Communications, LLCUSPeer17,77326
AS3491PCCW Global (HK) Ltd.HKPeer14,57911
AS6939Hurricane Electric LLCUSPeer14,47755
AS2497Internet Initiative Japan Inc.JPPeer12,6645

Prefixes

All 16,228

The largest blocks AS577 originates, widest first.

Largest prefixes originated by AS577
PrefixAddressesVisibility
50.100.0.0/1665.5k76/76
50.101.0.0/1665.5k76/76
64.228.0.0/1665.5k76/76
64.229.0.0/1665.5k76/76
64.231.0.0/1665.5k76/76
65.92.0.0/1665.5k76/76
65.93.0.0/1665.5k76/76
65.94.0.0/1665.5k76/76
65.95.0.0/1665.5k76/76
67.68.0.0/1665.5k76/76

Routing health

How AS577'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

  • Valid98.8%16,036
  • Invalid<0.1%1
  • No ROA1.2%191

Propagation

  • Globally propagated90% of full-feed peers or more10.4%1,687
  • Partially propagated40% to 90%<0.1%2
  • Seen by few peersUnder 40%89.6%14,539

Prefix sizes

IPv4 — 16,156 prefixes

IPv6 — 72 prefixes

  • /324.3B × /641.4%1
  • /4016.8M × /642.8%2
  • /418.4M × /6425.0%18
  • /441M × /6412.5%9
  • /45524k × /641.4%1
  • /46262k × /642.8%2
  • /47131k × /6412.5%9
  • /4865.5k × /6441.7%30

Recent changes

Announcements that started or stopped since 11th Oct 2026.

1,388 announced and 1,295 withdrawn in all; the most recent are shown.

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