subnet.im

AS37084Simbanet (T) Limited

TanzaniaRegistryAFRINIC

As of 23rd October 2026, AS37084 (Simbanet (T) Limited), a network registered in Tanzania with AFRINIC, originates 17 IPv4 prefixes covering 85.8k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 2,628th-largest of the 79,666 networks we see originating IPv4, and the 5th-largest of 104 in Tanzania. It is seen behind 4 upstream networks, most often AS37035 (MIC TANZANIA LTD) and AS15399 (Wananchi Group (Kenya) Limited), and in front of 31 downstream networks. None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

17

IPv6 prefixes

1

IPv4 addresses

85.8k

IPv6 /64s

4.3B

Upstream graph

The networks AS37084 is seen behind, one and two hops out, drawn from real AS paths.

AS37084Toward the internet core
Upstream graph for AS37084: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS37084Simbanet (T) Limi…This networkAS15399Wananchi Group (K…AS37035MIC TANZANIA LTDAS37100SEACOM LimitedAS37133Airtel TanzaniaAS37271Workonline Commun…AS37662West Indian Ocean…AS30990Djibouti Telecom …AS2914NTT America, Inc.AS6453TATA Communicatio…AS37440Airtel Malawi LtdAS327708Airtel Rwanda Ltd

Networks observed one and two hops upstream of AS37084 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

74

adjacent networks

Upstreams
45%
Peers
3953%
Downstreams
3142%

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

Upstreams of AS37084
NetworkCountryRelationshipPathsVantage pts
AS37035MIC TANZANIA LTDTZPeer5,542141
AS15399Wananchi Group (Kenya) LimitedKEPeer1,415121
AS37100SEACOM LimitedMUPeer353
AS37133Airtel TanzaniaTZPeer99

Prefixes

The largest blocks AS37084 originates, widest first.

Largest prefixes originated by AS37084
PrefixAddressesVisibility
155.12.0.0/1732.8k77/77
41.188.128.0/1816.4k77/77
41.188.128.0/198.2k77/77
41.188.160.0/198.2k77/77
41.221.32.0/204.1k77/77
196.45.32.0/204.1k77/77
41.221.32.0/212k77/77
41.221.40.0/212k77/77
196.45.32.0/212k77/77
196.45.40.0/212k77/77

Routing health

How AS37084'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%18

Propagation

  • Globally propagated90% of full-feed peers or more100.0%18
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 17 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

No announcement by AS37084 started or stopped in this period.

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