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Autonomous System

AS266445 · SEA TELECOM LTDA

Overview

AS266445 is announced on the Internet: RIPE RIS route collectors currently see 12 IPv4 prefixes and 3 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 9,216 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 13 upstream neighbours (transit providers or peers) and 36 downstream neighbours (customers or networks it carries). Its most visible upstreams are CLARO S.A. (AS4230), V tal (AS7738), and Hurricane Electric LLC (AS6939). AS266445 was assigned by LACNIC, and its registration country is Brazil.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 12:58 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 149.102.64.1, the first address of 149.102.64.0/19. 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 (12 prefixes)

PrefixAddresses
149.102.64.0/198,192
149.102.64.0/24256
149.102.65.0/24256
149.102.67.0/24256
149.102.81.0/24256
149.102.83.0/24256
149.102.85.0/24256
170.82.180.0/221,024
170.82.180.0/24256
170.82.181.0/24256
170.82.182.0/24256
170.82.183.0/24256

IPv6 prefixes (3 prefixes)

Prefix
2804:37f0::/32
2804:37f0:ab::/48
2804:37f0:ac::/48

Neighbours

Upstreams (transit or peers) (13)

ASNetworkVisibility
AS4230CLARO S.A.9,037
AS7738V tal7,455
AS6939Hurricane Electric LLC1,628
AS174Cogent Communications, LLC956
AS6057Administracion Nacional de Telecomunicaciones103
AS137409GSL Networks Pty LTD86
AS61626UNIVERSIDADE ESTADUAL DE PONTA GROSSA51
AS35280F5 Networks SARL47
AS37468Angola Cables45
AS61817Halley Telecom Comercio & Servico Ltda6
AS39120Convergenze S.p.A.3
AS1239Cogent Communications, LLC1
AS22381SAMM TECNOLOGIA E TELECOMUNICACOES S.A1

Downstreams (customers) (36)

ASNetworkVisibility
AS263258INTERLIG TELECOM2,176
AS265435E.W de Aguiar Lima e Comercio EPP1,974
AS271494Soft Telecom1,424
AS263262MOV TELECOM LTDA1,183
AS265063NEX INTERNET845
AS265312Portal Conexao Ltda773
AS268230SEA TELECOM LTDA749
AS263611ZUM TELECOM LTDA- ME552
AS270786SEA TELECOM LTDA528
AS268930Ilhas Net LTDA - ME526
AS52766Printnet telecomunicacoes524
AS271457-524
AS267215-475
AS14789Cloudflare, Inc.473
AS270408-440
AS267943-436
AS271230-429
AS264042-426
AS271496-418
AS266911VicNet Telecom416
AS267336-390
AS263501-380
AS61862-317
AS268549-293
AS214769-290
AS52924NEXCESS Solucoes de Redes Ltda.289
AS266361-289
AS270474-289
AS274601-205
AS271493-181

The 30 most visible of 36.

20 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.