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AS61745NBS Telecom

BrazilRegistryLACNICTypeCarrier

As of 29th September 2026, AS61745 (NBS Telecom), a transit carrier registered in Brazil with LACNIC, originates 6 IPv4 prefixes covering 5.1k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 15,318th-largest of the 79,607 networks we see originating IPv4, and the 1,308th-largest of 7,989 in Brazil. It is seen behind 19 upstream networks, most often AS4230 (Claro (Embratel)) and AS8167 (V.tal), and in front of 29 downstream networks. Every one of its announcements has 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

6

IPv6 prefixes

1

IPv4 addresses

5.1k

IPv6 /64s

4.3B

Upstream graph

The networks AS61745 is seen behind, one and two hops out, drawn from real AS paths.

AS61745Toward the internet core
Upstream graph for AS61745: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS61745NBS TelecomThis networkAS4230Claro (Embratel)AS6939Hurricane Electri…AS7738V.tal (fka Telema…AS8167V.talAS10429Vivo (Telefônica …AS1299Arelion (fka. Tel…AS35280F5 Networks SARLAS18106Viewqwest Pte LtdAS20130Depaul UniversityAS52320V.tal (GlobeNet)AS1000LINK AMERICANAS12956Telxius (Telefoni…

Networks observed one and two hops upstream of AS61745 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

226

adjacent networks

Upstreams
198%
Peers
17879%
Downstreams
2913%

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

Upstreams of AS61745
NetworkCountryRelationshipPathsVantage pts
AS4230Claro (Embratel)BRPeer3,374106
AS8167V.talBRPeer2,94280
AS7738V.tal (fka Telemar)BRPeer1,46729
AS10429Vivo (Telefônica Brasil)BRPeer1,07936
AS6939Hurricane Electric LLCUSPeer99219
AS1031PEER 1031 LLCUSPeer67521
AS14537Continent 8 LLCUSPeer2533
AS49544i3D.net B.VNLPeer2062
AS1000LINK AMERICANUSPeer1812
AS266213PLANETCLICK TELECOMUNICACOES LTDABRPeer1772

Prefixes

The largest blocks AS61745 originates, widest first.

Largest prefixes originated by AS61745
PrefixAddressesVisibility
186.219.240.0/212k82/82
131.72.152.0/221k82/82
186.219.248.0/221k82/82
186.219.252.0/2351282/82
186.219.252.0/2425682/82
186.219.254.0/2425682/82
2804:1bb8::/324.3B × /6464/65

Routing health

How AS61745'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

  • Valid100.0%7
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%7
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 6 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 30th Aug 2026.

No announcement by AS61745 started or stopped in this period.

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