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Autonomous System

AS52872 ยท Voafibra Comunicacao

Overview

AS52872 is announced on the Internet: RIPE RIS route collectors currently see 21 IPv4 prefixes and 3 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 4,096 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 17 upstream neighbours (transit providers or peers) and 54 downstream neighbours (customers or networks it carries). Its most visible upstreams are IVI TECNOLOGIA E COMUNICACAO LTDA (AS262999), Level 3 Parent, LLC (AS3356), and Hurricane Electric LLC (AS6939). AS52872 was assigned by LACNIC, and its registration country is Brazil.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 11:43 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 177.128.192.1, the first address of 177.128.192.0/21. An address picked inside a prefix may not answer (nothing listens there, or the network filters probes): the trace then shows the path up to the last network that replies.

Announced prefixes

IPv4 prefixes (21 prefixes)

PrefixAddresses
168.0.236.0/221,024
168.0.236.0/23512
168.0.238.0/23512
168.197.136.0/221,024
168.197.136.0/23512
168.197.138.0/23512
168.197.138.0/24256
177.128.192.0/212,048
177.128.192.0/221,024
177.128.192.0/23512
177.128.192.0/24256
177.128.193.0/24256
177.128.194.0/23512
177.128.194.0/24256
177.128.195.0/24256
177.128.196.0/221,024
177.128.196.0/23512
177.128.196.0/24256
177.128.197.0/24256
177.128.198.0/23512
177.128.198.0/24256

IPv6 prefixes (3 prefixes)

Prefix
2804:88c::/32
2804:88c::/33
2804:88c:8000::/33

Neighbours

Upstreams (transit or peers) (17)

ASNetworkVisibility
AS262999IVI TECNOLOGIA E COMUNICACAO LTDA15,393
AS3356Level 3 Parent, LLC13,435
AS6939Hurricane Electric LLC3,859
AS52863UPX TECNOLOGIA LTDA506
AS267388Voafibra Comunicacao261
AS6057Administracion Nacional de Telecomunicaciones163
AS28189JR & JS ENGENHARIA E COMERCIO LTDA120
AS137409GSL Networks Pty LTD115
AS35280F5 Networks SARL104
AS61626UNIVERSIDADE ESTADUAL DE PONTA GROSSA60
AS14840BR.Digital Telecom46
AS37468Angola Cables45
AS269139AN TELECOM7
AS39120Convergenze S.p.A.2
AS1031PEER 1031 LLC1
AS7195EDGEUNO S.A.S1
AS22381SAMM TECNOLOGIA E TELECOMUNICACOES S.A1

Downstreams (customers) (54)

ASNetworkVisibility
AS53163CONID - Companhia Naciona para Inclusao Digital2,838
AS270358FUSION TELECOM2,742
AS269139AN TELECOM2,292
AS268283NET WORK FIBER COMERCIO E SERVICOS DE COMUNICACAO2,261
AS264592ENLACE TELECOM1,997
AS267972Alagoinhas net1,899
AS262999IVI TECNOLOGIA E COMUNICACAO LTDA1,231
AS267271PRIMMUS PROVEDOR DE ACESSO A INTERNET LTDA952
AS267388Voafibra Comunicacao932
AS267454FSA Tecnologia em Comunicacao LTDA - ME931
AS269153Conecte Telecom762
AS267236-746
AS264369IOL REDE DE PROVEDORES LTDA636
AS264993-542
AS271063GF WEB TELECOM535
AS270257NETFSA BANDA LARGA531
AS271248-515
AS266045-495
AS271397Anderson Barreto da Cruz476
AS268483-437
AS264548-436
AS52592-425
AS265169-425
AS264952-423
AS264104-422
AS262325-421
AS268546-420
AS271477-417
AS264192-414
AS269367-412

The 30 most visible of 54.

57 more neighbours appear on both sides of this network depending on the path, so they are counted in neither list.

Visibility is RIPEstat's count of how often the route collectors observed the link. It compares neighbours with each other; it is not a traffic volume.

How to read this page

An Autonomous System (AS) is a network run under one routing policy: an internet provider, a cloud, a content network, a university. Each one has a number, its ASN, assigned by a regional registry (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), and uses BGP, the protocol networks use to tell each other where addresses are, to announce the blocks of addresses it delivers to.

A prefix such as 203.0.113.0/24 is a block of addresses: the number after the slash says how many bits are fixed, so a /24 holds 256 IPv4 addresses and a /16 holds 65,536. Networks often announce a large block and smaller pieces of it at the same time, which is why the address total counts each address once.

Neighbours come from the paths themselves. A network that appears just before this one in a path, on the collector's side, is an upstream: a transit provider or a peer. One that appears just after it is a downstream, usually a customer. Peering at an internet exchange also shows up as an upstream, so the upstream list is not a list of paid transit.

The data comes from RIPEstat, run by the RIPE NCC, which gathers the routing tables of hundreds of networks through its RIS route collectors. This page reads it when it is visited and keeps it for 12 hours at most; the BGP viewer reads it live.

Frequently asked questions

How do I find the ASN of an IP address?
Type the address in the BGP viewer: it shows the prefix that covers it, the AS that originates that prefix and the paths seen towards it. A traceroute also names the network of each hop, so you can see every AS a connection crosses.
Why does one company have several ASNs?
Large operators split their network by region, by activity or by history: a cloud may use one number for its backbone and another for a region, and every acquisition brings its own numbers. Each number has its own page, with its own prefixes and neighbours.
Why do prefix counts differ from one site to another?
Each source sees the routing table from different collectors, at a different time, and counts differently: some include prefixes withdrawn in recent weeks, some merge a block and its pieces. This page counts the prefixes RIPE RIS collectors see originated by the network at the end of the latest two-week window, and counts each IPv4 address once.
Is this the list of IP ranges of a cloud provider?
It is what its networks announce, which is what the Internet routes to them. Many providers also publish an official list of ranges per service and region; that list is the reference for firewall rules, because a range can be announced before it is used, or announced by another of their AS numbers.