subnet.im

AS28238Sator Engenharia Ltda.

BrazilRegistryLACNIC

As of 26th October 2026, AS28238 (Sator Engenharia Ltda.), a network registered in Brazil with LACNIC, originates 17 IPv4 prefixes covering 4.4k addresses. By IPv4 address space that makes it the 16,582nd-largest of the 79,679 networks we see originating IPv4, and the 1,418th-largest of 7,988 in Brazil. It is seen behind 7 upstream networks, most often AS264485 (Super Net) and AS28173 (Dinamica Telecomunicacoes Ltda). 94% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

17

IPv6 prefixes

0

IPv4 addresses

4.4k

IPv6 /64s

0

Upstream graph

The networks AS28238 is seen behind, one and two hops out, drawn from real AS paths.

AS28238Toward the internet core
Upstream graph for AS28238: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS28238Sator Engenharia …This networkAS28173Dinamica Telecomu…AS52751Brasrede Telecomu…AS264485Super NetAS273398CDG TELECOM COMER…AS274480Prenet LTDAAS3356Lumen (Level 3)AS37468Angola CablesAS28283Adyl TelecomAS28260ALTA REDE CORPORA…AS263009FORTE TELECOM LTD…AS262503WIKI TELECOMUNICA…AS265269MEGA TELE INFORMA…

Networks observed one and two hops upstream of AS28238 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

15

adjacent networks

Upstreams
747%
Peers
853%
Downstreams
00%

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

Upstreams of AS28238
NetworkCountryRelationshipPathsVantage pts
AS264485Super NetBRPeer91276
AS28173Dinamica Telecomunicacoes LtdaBRPeer10269
AS273398CDG TELECOM COMERCIO EIRELIBRPeer7676
AS52751Brasrede Telecomunicações LTDABRPeer7676
AS274480Prenet LTDABRPeer7373
AS263482Megalink Servicos LtdaBRPeer5043
AS262503WIKI TELECOMUNICACOES EIRELIBRPeer33

Prefixes

The largest blocks AS28238 originates, widest first.

Largest prefixes originated by AS28238
PrefixAddressesVisibility
38.226.5.0/2425676/76
187.0.128.0/2425676/76
187.0.129.0/2425676/76
187.0.130.0/2425676/76
187.0.131.0/2425676/76
187.0.132.0/2425676/76
187.0.133.0/2425676/76
187.0.134.0/2425676/76
187.0.135.0/2425676/76
187.0.136.0/2425676/76

Routing health

How AS28238'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

  • Valid94.1%16
  • Invalid0.0%0
  • No ROA5.9%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%17
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 17 prefixes

Recent changes

Announcements that started or stopped since 26th Sept 2026.

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