subnet.im

AS28351Claro NXT Telecomunicacoes Ltda

BrazilRegistryLACNIC

As of 10th November 2026, AS28351 (Claro NXT Telecomunicacoes Ltda), a network registered in Brazil with LACNIC, originates 3 IPv4 prefixes covering 8.2k addresses. By IPv4 address space that makes it the 12,069th-largest of the 80,723 networks we see originating IPv4, and the 850th-largest of 8,031 in Brazil. It is seen behind 1 upstream network, most often AS4230 (Claro (Embratel)). 33% of its announcements have a valid RPKI ROA; 2 are RPKI-invalid. 33% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

3

IPv6 prefixes

0

IPv4 addresses

8.2k

IPv6 /64s

0

Upstream graph

The networks AS28351 is seen behind, one and two hops out, drawn from real AS paths.

AS28351Toward the internet core
Upstream graph for AS28351: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS28351Claro NXT Telecom…This networkAS4230Claro (Embratel)AS1299Arelion (fka. Tel…AS35280F5 Networks SARL

Networks observed one and two hops upstream of AS28351 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS28351
NetworkCountryRelationshipPathsVantage pts
AS4230Claro (Embratel)BRPeer11876

Prefixes

The largest blocks AS28351 originates, widest first.

Largest prefixes originated by AS28351
PrefixAddressesVisibility
189.51.176.0/204.1k76/76
189.51.176.0/212k21/76
189.51.184.0/212k21/76

Routing health

How AS28351'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

  • Valid33.3%1
  • Invalid66.7%2
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more33.3%1
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%66.7%2

Prefix sizes

IPv4 — 3 prefixes

Recent changes

Announcements that started or stopped since 11th Oct 2026.

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