subnet.im

AS37619Broadband Systems Corporation

RwandaRegistryAFRINIC

As of 22nd October 2026, AS37619 (Broadband Systems Corporation), a network registered in Rwanda with AFRINIC, originates 8 IPv4 prefixes covering 89.1k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 2,563rd-largest of the 79,663 networks we see originating IPv4, and the 3rd-largest of 21 in Rwanda. It is seen behind 8 upstream networks, most often AS37100 (SEACOM Limited) and AS37273 (Bandwidth and Cloud Services Group Ltd), and in front of 9 downstream networks. 67% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 89% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

8

IPv6 prefixes

1

IPv4 addresses

89.1k

IPv6 /64s

4.3B

Upstream graph

The networks AS37619 is seen behind, one and two hops out, drawn from real AS paths.

AS37619Toward the internet core
Upstream graph for AS37619: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS37619Broadband Systems…This networkAS14593SpaceX StarlinkAS30844Liquid Intelligen…AS33765Tanzania Telecomm…AS37100SEACOM LimitedAS37273Bandwidth and Clo…AS1299Arelion (fka. Tel…AS3356Lumen (Level 3)AS6453TATA Communicatio…AS2914NTT America, Inc.AS6939Hurricane Electri…AS174Cogent Communicat…

Networks observed one and two hops upstream of AS37619 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

38

adjacent networks

Upstreams
821%
Peers
2155%
Downstreams
924%

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

Upstreams of AS37619
NetworkCountryRelationshipPathsVantage pts
AS37100SEACOM LimitedMUPeer3,29877
AS37273Bandwidth and Cloud Services Group LtdUGPeer2,65076
AS14593SpaceX StarlinkUSPeer46994
AS30844Liquid Intelligent Technologies GBPeer42880
AS33765Tanzania Telecommunications CorporationTZPeer35884
AS36890MTN RwandacellRWPeer14838
AS6939Hurricane Electric LLCUSPeer53
AS58453China Mobile InternationalHKPeer31

Prefixes

The largest blocks AS37619 originates, widest first.

Largest prefixes originated by AS37619
PrefixAddressesVisibility
41.197.0.0/1665.5k77/77
41.197.0.0/204.1k77/77
41.197.16.0/204.1k77/77
41.197.96.0/204.1k77/77
41.197.128.0/204.1k77/77
41.197.240.0/204.1k77/77
41.197.240.0/212k77/77
41.197.240.0/221k19/77
2c0f:fe60::/324.3B × /6464/64

Routing health

How AS37619'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

  • Valid66.7%6
  • Invalid11.1%1
  • No ROA22.2%2

Propagation

  • Globally propagated90% of full-feed peers or more88.9%8
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%11.1%1

Prefix sizes

IPv4 — 8 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS37619 started or stopped in this period.

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