subnet.im

AS52888UNIVERSIDADE FEDERAL DE SAO CARLOS

BrazilRegistryLACNIC

As of 24th October 2026, AS52888 (UNIVERSIDADE FEDERAL DE SAO CARLOS), a network registered in Brazil with LACNIC, originates 28 IPv4 prefixes covering 60.7k addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 4,089th-largest of the 79,664 networks we see originating IPv4, and the 115th-largest of 7,989 in Brazil. It is seen behind 9 upstream networks, most often AS1916 (RNP - Rede Nacional de Ensino e Pesquisa) and AS6939 (Hurricane Electric LLC), and in front of 1 downstream network. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 65% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

28

IPv6 prefixes

6

IPv4 addresses

60.7k

IPv6 /64s

8.6B

Upstream graph

The networks AS52888 is seen behind, one and two hops out, drawn from real AS paths.

AS52888Toward the internet core
Upstream graph for AS52888: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS52888UNIVERSIDADE FEDE…This networkAS1251FUNDAÇÃO DE AMPAR…AS1916RNP - Rede Nacion…AS6939Hurricane Electri…AS14537Continent 8 LLCAS35280F5 Networks SARLAS15830Equinix, Inc.AS20080Florida Internati…AS174Cogent Communicat…AS2914NTT America, Inc.AS20130Depaul UniversityAS132337AxclusiveAS1299Arelion (fka. Tel…

Networks observed one and two hops upstream of AS52888 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

67

adjacent networks

Upstreams
913%
Peers
5785%
Downstreams
11%

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

Upstreams of AS52888
NetworkCountryRelationshipPathsVantage pts
AS1916RNP - Rede Nacional de Ensino e PesquisaBRPeer1,720139
AS6939Hurricane Electric LLCUSPeer8226
AS1251FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO SÃO PAULOBRPeer637
AS35280F5 Networks SARLFRPeer505
AS14537Continent 8 LLCUSPeer384
AS137409GSL Networks Pty LTDAUPeer314
AS32590Valve CorporationUSPeer282
AS266213PLANETCLICK TELECOMUNICACOES LTDABRPeer282
AS1000LINK AMERICANUSPeer122

Prefixes

All 34

The largest blocks AS52888 originates, widest first.

Largest prefixes originated by AS52888
PrefixAddressesVisibility
200.136.192.0/1816.4k76/76
200.136.192.0/198.2k10/76
200.136.224.0/198.2k10/76
186.219.80.0/204.1k76/76
200.133.224.0/204.1k76/76
186.219.80.0/212k10/76
186.219.88.0/212k10/76
200.18.96.0/212k76/76
200.133.224.0/212k10/76
200.133.232.0/212k10/76

Routing health

How AS52888'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%34
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more64.7%22
  • Partially propagated40% to 90%5.9%2
  • Seen by few peersUnder 40%29.4%10

Prefix sizes

IPv4 — 28 prefixes

IPv6 — 6 prefixes

  • /324.3B × /6416.7%1
  • /332.1B × /6433.3%2
  • /46262k × /6450.0%3

Recent changes

Announcements that started or stopped since 24th Sept 2026.

13 announced and 13 withdrawn in all; the most recent are shown.

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