subnet.im

AS577Bell Canada

CanadaRegistryARINTypeEyeball

As of 26th September 2026, AS577 (Bell Canada), an access network registered in Canada with ARIN, originates 16,239 IPv4 prefixes covering 11.2M addresses and 73 IPv6 prefixes. By IPv4 address space that makes it the 65th-largest of the 79,480 networks we see originating IPv4, and the 2nd-largest of 1,575 in Canada. It is seen behind 24 upstream networks, most often AS1403 (EBOX) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 318 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 5 prefixes are also originated by another network.

At a glance

IPv4 prefixes

16,239

IPv6 prefixes

73

IPv4 addresses

11.2M

IPv6 /64s

8.8B

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…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS6939Hurricane Electri…AS3130RGnet OUAS49544i3D.net B.VAS3549Lumen (fka. Globa…AS8220COLT

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

666

adjacent networks

Upstreams
244%
Peers
32449%
Downstreams
31848%

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

Upstreams of AS577
NetworkCountryRelationshipPathsVantage pts
AS1403EBOXCAPeer875,4901
AS1299Arelion (fka. Telia Carrier)SEPeer78,04575
AS2914NTT America, Inc.USPeer48,46533
AS3356Lumen (Level 3)USPeer45,41252
AS6453TATA Communications (America) IncUSPeer44,07166
AS3257GTT Communications Inc.USPeer26,72960
AS174Cogent Communications, LLCUSPeer18,09836
AS6939Hurricane Electric LLCUSPeer14,40658
AS3491PCCW Global (HK) Ltd.HKPeer13,97411
AS2497Internet Initiative Japan Inc.JPPeer12,7035

Prefixes

All 16,312

The largest blocks AS577 originates, widest first.

Largest prefixes originated by AS577
PrefixAddressesVisibility
50.100.0.0/1665.5k81/81
50.101.0.0/1665.5k81/81
64.228.0.0/1665.5k81/81
64.229.0.0/1665.5k81/81
64.231.0.0/1665.5k81/81
65.92.0.0/1665.5k81/81
65.93.0.0/1665.5k81/81
65.94.0.0/1665.5k81/81
65.95.0.0/1665.5k81/81
67.68.0.0/1665.5k81/81

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%16,118
  • Invalid<0.1%1
  • No ROA1.2%193

Propagation

  • Globally propagated90% of full-feed peers or more10.4%1,694
  • Partially propagated40% to 90%<0.1%4
  • Seen by few peersUnder 40%89.6%14,614

Prefix sizes

IPv4 — 16,239 prefixes

IPv6 — 73 prefixes

  • /324.3B × /642.7%2
  • /4016.8M × /642.7%2
  • /418.4M × /6424.7%18
  • /441M × /6412.3%9
  • /45524k × /641.4%1
  • /46262k × /645.5%4
  • /47131k × /649.6%7
  • /4865.5k × /6441.1%30

Recent changes

Announcements that started or stopped since 27th Aug 2026.

592 announced and 512 withdrawn in all; the most recent are shown.

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