subnet.im

AS4230Claro (Embratel)

BrazilRegistryLACNICTypeEyeball

As of 10th November 2026, AS4230 (Claro (Embratel)), an access network registered in Brazil with LACNIC, originates 79 IPv4 prefixes covering 5.2M addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 135th-largest of the 80,723 networks we see originating IPv4, and the 6th-largest of 8,031 in Brazil. It is seen behind 59 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS35280 (F5 Networks SARL), and in front of 1,116 downstream networks. 93% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 99% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

79

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…AS3356Lumen (Level 3)AS6453TATA Communicatio…AS35280F5 Networks SARLAS39122Blacknight Intern…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS8220COLTAS32590Valve 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

2,874

adjacent networks

Upstreams
592%
Peers
1,69959%
Downstreams
1,11639%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 59.

Upstreams of AS4230
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer73,42875
AS35280F5 Networks SARLFRPeer55,8916
AS3356Lumen (Level 3)USPeer34,85463
AS1031PEER 1031 LLCUSPeer33,40427
AS6453TATA Communications (America) IncUSPeer33,26648
AS3257GTT Communications Inc.USPeer30,95041
AS174Cogent Communications, LLCUSPeer19,18031
AS6939Hurricane Electric LLCUSPeer16,60911
AS52925Ascenty Data Centers e Telecomunicações S/ABRPeer15,2392
AS9002RETN LimitedGBPeer13,2456

Prefixes

All 85

The largest blocks AS4230 originates, widest first.

Largest prefixes originated by AS4230
PrefixAddressesVisibility
191.56.0.0/14262k76/76
191.60.0.0/14262k76/76
191.38.0.0/15131k76/76
179.68.0.0/1665.5k76/76
187.28.0.0/1665.5k76/76
187.29.0.0/1665.5k76/76
187.30.0.0/1665.5k76/76
187.43.0.0/1665.5k76/76
189.2.0.0/1665.5k76/76
189.3.0.0/1665.5k76/76

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%79
  • Invalid0.0%0
  • No ROA7.1%6

Propagation

  • Globally propagated90% of full-feed peers or more98.8%84
  • Partially propagated40% to 90%1.2%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 79 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 11th Oct 2026.

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