subnet.im

AS23991Ranks ITT Ltd.

BangladeshRegistryAPNICTypeEyeball

As of 11th November 2026, AS23991 (Ranks ITT Ltd.), an access network registered in Bangladesh with APNIC, originates 27 IPv4 prefixes covering 8.2k addresses and 7 IPv6 prefixes. By IPv4 address space that makes it the 12,070th-largest of the 80,743 networks we see originating IPv4, and the 56th-largest of 1,567 in Bangladesh. It is seen behind 3 upstream networks, most often AS58715 (EARTH TELECOMMUNICATION (Pvt) LTD.) and AS58717 (Summit Communications Ltd), and in front of 7 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 97% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

27

IPv6 prefixes

7

IPv4 addresses

8.2k

IPv6 /64s

459k

Upstream graph

The networks AS23991 is seen behind, one and two hops out, drawn from real AS paths.

AS23991Toward the internet core
Upstream graph for AS23991: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS23991Ranks ITT Ltd.This networkAS58715EARTH TELECOMMUNI…AS58717Summit Communicat…AS139901Apple Communicati…AS6939Hurricane Electri…AS9498Bharti Airtel Ltd.

Networks observed one and two hops upstream of AS23991 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
314%
Peers
1255%
Downstreams
732%

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

Upstreams of AS23991
NetworkCountryRelationshipPathsVantage pts
AS58715EARTH TELECOMMUNICATION (Pvt) LTD.BDPeer1,801139
AS58717Summit Communications LtdBDPeer1,531138
AS139901Apple Communication Ltd.BDPeer16977

Prefixes

All 34

The largest blocks AS23991 originates, widest first.

Largest prefixes originated by AS23991
PrefixAddressesVisibility
103.35.108.0/221k76/76
103.111.88.0/235121/76
103.151.168.0/2351276/76
103.35.108.0/2425676/76
103.35.109.0/2425676/76
103.35.110.0/2425676/76
103.35.111.0/2425676/76
103.111.88.0/2425676/76
103.111.89.0/2425676/76
103.151.168.0/2425676/76

Routing health

How AS23991'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%34
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more97.1%33
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%2.9%1

Prefix sizes

IPv4 — 27 prefixes

IPv6 — 7 prefixes

  • /4865.5k × /64100.0%7

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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