subnet.im

AS263998SIM FIBRA

BrazilRegistryLACNIC

As of 11th November 2026, AS263998 (SIM FIBRA), a network registered in Brazil with LACNIC, originates 10 IPv4 prefixes covering 3.1k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 20,477th-largest of the 80,747 networks we see originating IPv4, and the 1,832nd-largest of 8,032 in Brazil. It is seen behind 29 upstream networks, most often AS3356 (Lumen (Level 3)) and AS6939 (Hurricane Electric LLC), and in front of 25 downstream networks. None of its announcements have a valid RPKI ROA. 87% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

10

IPv6 prefixes

5

IPv4 addresses

3.1k

IPv6 /64s

9.1B

Upstream graph

The networks AS263998 is seen behind, one and two hops out, drawn from real AS paths.

AS263998Toward the internet core
Upstream graph for AS263998: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS263998SIM FIBRAThis networkAS1031PEER 1031 LLCAS3356Lumen (Level 3)AS6939Hurricane Electri…AS18106Viewqwest Pte LtdAS52468UFINET PANAMA S.A.AS6453TATA Communicatio…AS39122Blacknight Intern…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS20130Depaul UniversityAS132337AxclusiveAS215859Hetzner Cloud - S…

Networks observed one and two hops upstream of AS263998 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

179

adjacent networks

Upstreams
2916%
Peers
12570%
Downstreams
2514%

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

Upstreams of AS263998
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer7,003133
AS6939Hurricane Electric LLCUSPeer41018
AS1031PEER 1031 LLCUSPeer35718
AS18106Viewqwest Pte LtdSGPeer1714
AS52468UFINET PANAMA S.A.PAPeer11388
AS14537Continent 8 LLCUSPeer1104
AS49544i3D.net B.VNLPeer1082
AS24482SG.GSSGPeer1053
AS266213PLANETCLICK TELECOMUNICACOES LTDABRPeer832
AS32590Valve CorporationUSPeer802

Prefixes

The largest blocks AS263998 originates, widest first.

Largest prefixes originated by AS263998
PrefixAddressesVisibility
170.245.200.0/235121/76
170.245.202.0/235121/76
143.0.84.0/2425676/76
143.0.85.0/2425676/76
143.0.86.0/2425676/76
143.0.87.0/2425676/76
170.245.200.0/2425676/76
170.245.201.0/2425676/76
170.245.202.0/2425676/76
170.245.203.0/2425676/76

Routing health

How AS263998'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%15

Propagation

  • Globally propagated90% of full-feed peers or more86.7%13
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%13.3%2

Prefix sizes

IPv4 — 10 prefixes

IPv6 — 5 prefixes

  • /324.3B × /6440.0%2
  • /36268M × /6440.0%2
  • /4016.8M × /6420.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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