subnet.im

AS283703AX Telecom (GUIFAMI Informática Ltda)

BrazilRegistryLACNIC

As of 27th September 2026, AS28370 (3AX Telecom (GUIFAMI Informática Ltda)), a network registered in Brazil with LACNIC, originates 25 IPv4 prefixes covering 26.1k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 6,088th-largest of the 79,523 networks we see originating IPv4, and the 254th-largest of 7,982 in Brazil. It is seen behind 13 upstream networks, most often AS3356 (Lumen (Level 3)) and AS268624 (Gamers Club Ltda), and in front of 16 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

25

IPv6 prefixes

2

IPv4 addresses

26.1k

IPv6 /64s

4.3B

Upstream graph

The networks AS28370 is seen behind, one and two hops out, drawn from real AS paths.

AS28370Toward the internet core
Upstream graph for AS28370: 10 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS283703AX Telecom (GUIF…This networkAS1031PEER 1031 LLCAS3356Lumen (Level 3)AS6939Hurricane Electri…AS268624Gamers Club LtdaAS271253LINK BRASIL TELEC…AS3549Lumen (fka. Globa…AS2914NTT America, Inc.AS6453TATA Communicatio…AS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS28370 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

104

adjacent networks

Upstreams
1313%
Peers
7572%
Downstreams
1615%

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

Upstreams of AS28370
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer5,287103
AS268624Gamers Club LtdaBRPeer1,09859
AS6939Hurricane Electric LLCUSPeer1,03024
AS271253LINK BRASIL TELECOMUNICACOES LTDABRPeer93926
AS1031PEER 1031 LLCUSPeer1744
AS14537Continent 8 LLCUSPeer1313
AS35280F5 Networks SARLFRPeer1112
AS32590Valve CorporationUSPeer992
AS132337AxclusiveSGPeer911
AS24940Hetzner Online GmbHDEPeer811

Prefixes

All 27

The largest blocks AS28370 originates, widest first.

Largest prefixes originated by AS28370
PrefixAddressesVisibility
187.45.144.0/204.1k81/81
189.84.144.0/204.1k81/81
187.45.152.0/212k81/81
189.84.144.0/212k81/81
189.84.152.0/212k81/81
45.172.144.0/221k81/81
187.45.152.0/221k81/81
187.45.156.0/221k81/81
189.84.144.0/221k81/81
189.84.152.0/221k81/81

Routing health

How AS28370'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%27
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%27
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 25 prefixes

IPv6 — 2 prefixes

  • /324.3B × /6450.0%1
  • /441M × /6450.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS28370 started or stopped in this period.

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