subnet.im

AS4230Claro (Embratel)

BrazilRegistryLACNICTypeEyeball

As of 26th September 2026, AS4230 (Claro (Embratel)), an access network registered in Brazil with LACNIC, originates 78 IPv4 prefixes covering 5.2M addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 134th-largest of the 79,480 networks we see originating IPv4, and the 6th-largest of 7,982 in Brazil. It is seen behind 55 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS35280 (F5 Networks SARL), and in front of 975 downstream networks. 93% 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

78

IPv6 prefixes

6

IPv4 addresses

5.2M

IPv6 /64s

21.5B

Upstream graph

The networks AS4230 is seen behind, one and two hops out, drawn from real AS paths.

AS4230Toward the internet core
Upstream graph for AS4230: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS4230Claro (Embratel)This networkAS1031PEER 1031 LLCAS1299Arelion (fka. Tel…AS3257GTT Communication…AS3356Lumen (Level 3)AS35280F5 Networks SARLAS6453TATA Communicatio…AS6939Hurricane Electri…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS32590Valve Corporation

Networks observed one and two hops upstream of AS4230 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

2,660

adjacent networks

Upstreams
552%
Peers
1,63061%
Downstreams
97537%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 55.

Upstreams of AS4230
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer72,11373
AS35280F5 Networks SARLFRPeer48,0196
AS1031PEER 1031 LLCUSPeer36,48930
AS3356Lumen (Level 3)USPeer36,40960
AS3257GTT Communications Inc.USPeer34,92441
AS6453TATA Communications (America) IncUSPeer29,83346
AS174Cogent Communications, LLCUSPeer23,81623
AS6939Hurricane Electric LLCUSPeer20,39413
AS9002RETN LimitedGBPeer13,1339
AS7195EdgeUnoCOPeer9,62612

Prefixes

All 84

The largest blocks AS4230 originates, widest first.

Largest prefixes originated by AS4230
PrefixAddressesVisibility
191.56.0.0/14262k81/81
191.60.0.0/14262k81/81
191.38.0.0/15131k81/81
179.68.0.0/1665.5k81/81
187.28.0.0/1665.5k81/81
187.29.0.0/1665.5k81/81
187.30.0.0/1665.5k81/81
187.43.0.0/1665.5k81/81
189.2.0.0/1665.5k81/81
189.3.0.0/1665.5k81/81

Routing health

How AS4230'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

  • Valid92.9%78
  • Invalid0.0%0
  • No ROA7.1%6

Propagation

  • Globally propagated90% of full-feed peers or more100.0%84
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 78 prefixes

IPv6 — 6 prefixes

  • /3017.2B × /6416.7%1
  • /324.3B × /6416.7%1
  • /4865.5k × /6466.7%4

Recent changes

Announcements that started or stopped since 27th Aug 2026.

No announcement by AS4230 started or stopped in this period.

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