subnet.im

AS37451CONGO TELECOM

Congo - BrazzavilleRegistryAFRINICTypeEyeball

As of 23rd October 2026, AS37451 (CONGO TELECOM), an access network registered in Congo - Brazzaville with AFRINIC, originates 38 IPv4 prefixes covering 9.7k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 10,675th-largest of the 79,666 networks we see originating IPv4, and the 3rd-largest of 10 in Congo - Brazzaville. It is seen behind 7 upstream networks, most often AS37468 (Angola Cables) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 14 downstream networks. None of its announcements have a valid RPKI ROA. 92% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

38

IPv6 prefixes

1

IPv4 addresses

9.7k

IPv6 /64s

65.5k

Upstream graph

The networks AS37451 is seen behind, one and two hops out, drawn from real AS paths.

AS37451Toward the internet core
Upstream graph for AS37451: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS37451CONGO TELECOMThis networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS33763Paratus Telecommu…AS37468Angola CablesAS37497Network Platforms…AS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS2914NTT America, Inc.AS6939Hurricane Electri…AS3257GTT Communication…AS3491PCCW Global (HK) …

Networks observed one and two hops upstream of AS37451 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

75

adjacent networks

Upstreams
79%
Peers
5472%
Downstreams
1419%

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

Upstreams of AS37451
NetworkCountryRelationshipPathsVantage pts
AS37468Angola CablesAOPeer2,622124
AS1299Arelion (fka. Telia Carrier)SEPeer1,39070
AS174Cogent Communications, LLCUSPeer54275
AS33763Paratus Telecommunications LimitedMUPeer14115
AS37497Network Platforms (PTY) LTDZAPeer641
AS37613DOLPHIN TELECOMMUNICATION LIMITEDGHPeer1010
AS37662West Indian Ocean Cable Company (WIOCC)MUPeer42

Prefixes

All 39

The largest blocks AS37451 originates, widest first.

Largest prefixes originated by AS37451
PrefixAddressesVisibility
102.129.64.0/2425676/77
102.129.65.0/242561/77
102.129.66.0/242561/77
102.129.67.0/2425677/77
102.129.68.0/2425677/77
102.129.69.0/2425677/77
102.129.70.0/2425677/77
102.129.71.0/2425676/77
102.129.72.0/2425677/77
102.129.73.0/2425677/77

Routing health

How AS37451'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%39

Propagation

  • Globally propagated90% of full-feed peers or more92.3%36
  • Partially propagated40% to 90%2.6%1
  • Seen by few peersUnder 40%5.1%2

Prefix sizes

IPv4 — 38 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

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