subnet.im

AS5540626 Shyamoli, Bir Uttam A. W. Chowdhury Road

BangladeshRegistryAPNICTypeEyeball

As of 11th November 2026, AS55406 (26 Shyamoli, Bir Uttam A. W. Chowdhury…), an access network registered in Bangladesh with APNIC, originates 20 IPv4 prefixes covering 8.2k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 12,074th-largest of the 80,747 networks we see originating IPv4, and the 56th-largest of 1,567 in Bangladesh. It is seen behind 4 upstream networks, most often AS58717 (Summit Communications Ltd) and AS58682 (Level3 Carrier Ltd.), and in front of 7 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 95% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

20

IPv6 prefixes

1

IPv4 addresses

8.2k

IPv6 /64s

4.3B

Upstream graph

The networks AS55406 is seen behind, one and two hops out, drawn from real AS paths.

AS55406Toward the internet core
Upstream graph for AS55406: 7 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS5540626 Shyamoli, Bir …This networkAS10075Fiber@Home Global…AS58682Level3 Carrier Lt…AS58717Summit Communicat…AS139901Apple Communicati…AS64049Reliance Jio Info…AS9498Bharti Airtel Ltd.AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS55406 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

22

adjacent networks

Upstreams
418%
Peers
1150%
Downstreams
732%

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

Upstreams of AS55406
NetworkCountryRelationshipPathsVantage pts
AS58717Summit Communications LtdBDPeer85676
AS58682Level3 Carrier Ltd.BDPeer585118
AS10075Fiber@Home Global LimitedBDPeer36376
AS139901Apple Communication Ltd.BDPeer25876

Prefixes

The largest blocks AS55406 originates, widest first.

Largest prefixes originated by AS55406
PrefixAddressesVisibility
45.251.56.0/221k76/76
103.20.52.0/221k76/76
103.254.84.0/221k76/76
182.16.156.0/221k76/76
45.251.56.0/2425676/76
45.251.57.0/2425676/76
45.251.58.0/2425676/76
45.251.59.0/2425676/76
103.20.52.0/2425676/76
103.20.53.0/2425676/76

Routing health

How AS55406'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%21
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more95.2%20
  • Partially propagated40% to 90%4.8%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 20 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

  • Announced2405:f200::/329th Nov 2026
  • Withdrawn2405:f200::/3214th Oct 2026

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