ASN AS28209 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS28209?

AS28209 is listed under Under Servicos de Internet Ltda.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS28209 Under Servicos de Internet Ltda

ASN Lookup Tool

Under Servicos de Internet Ltda under.com.br

BR 46 Routes

AS Data

AS28209

AS28209 – Under Servicos de Internet Ltda

AS Number	28209
AS Name	05.501.732/0001-89
Organization	Under Servicos de Internet Ltda
Country	BR
Website	under.com.br
Number of IPv4 Routes	39
Number of IPv6 Routes	7
ASN type	ISP
Registry	lacnic
Date Allocated	2008-05-08

ASN Intelligence API for production workflows

Use ASN data for AS28209 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
177.70.24.0/22	AS28209	Under Servicos de Internet Ltda	Under Servicos de Internet Ltda	1024
177.70.0.0/19	AS28209	Under Servicos de Internet Ltda	Under Servicos de Internet Ltda	8192
179.127.4.0/22	AS28209	Under Servicos de Internet Ltda	Under Servicos de Internet Ltda	1024
179.127.29.0/24	AS28209	Under Servicos de Internet Ltda	Under Servicos de Internet Ltda	256
177.70.1.0/24	AS28209	Under Servicos de Internet Ltda	Under Servicos de Internet Ltda, BR	256
179.127.28.0/22	AS28209	Under Servicos de Internet Ltda	Under Servicos de Internet Ltda	1024
177.70.0.0/22	AS28209	Under Servicos de Internet Ltda	Under Servicos de Internet Ltda	1024
179.127.16.0/23	AS28209	Under Servicos de Internet Ltda	Under Servicos de Internet Ltda	512
177.70.20.0/22	AS28209	Under Servicos de Internet Ltda	Under Servicos de Internet Ltda	1024
179.127.10.0/23	AS28209	Under Servicos de Internet Ltda	Under Servicos de Internet Ltda	512

Raw Whois Response

% Copyright (c) Nic.br - Use of this data is governed by the Use and
% Privacy Policy at https://registro.br/upp . Distribution,
% commercialization, reproduction, and use for advertising or similar
% purposes are expressly prohibited.
% 2026-04-25T09:14:16-03:00 - 152.39.135.2

aut-num:     AS28209
owner:       Under Servicos de Internet Ltda
ownerid:     05.501.732/0001-89
responsible: Roberto Bert�
country:     BR
owner-c:     USILT23
routing-c:   USILT23
abuse-c:     ABDWE
created:     20080508
changed:     20210608
inetnum:     189.113.0.0/20
inetnum:     177.70.0.0/19
inetnum:     2804:1070::/32
inetnum:     179.127.0.0/19

nic-hdl-br:  USILT23
person:      UNDER SERVI�OS DE INTERNET LTDA
e-mail:      hostmaster@under.com.br
country:     BR
created:     20210608
changed:     20220416

nic-hdl-br:  ABDWE
person:      Abuse Dept. Webservidor
e-mail:      abuse@under.com.br
country:     BR
created:     20110426
changed:     20210607

% Security and mail abuse issues should also be addressed to cert.br,
% respectivelly to cert@cert.br and mail-abuse@cert.br
%
% whois.registro.br only accepts exact match queries for domains,
% registrants, contacts, tickets, providers, IPs, and ASNs.

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.lacnic.net",
  "aut_nums" : [ {
    "aut_num" : "AS28209",
    "country" : "BR",
    "admin_contacts" : [ "USILT23" ],
    "tech_contacts" : [ "USILT23" ],
    "abuse_contacts" : [ "ABDWE" ],
    "date_created" : "2008-05-08",
    "date_updated" : "2021-06-08",
    "source" : "lacnic"
  } ],
  "organization" : {
    "handle" : "05.501.732/0001-89",
    "name" : "Under Servicos de Internet Ltda",
    "country" : [ "BR" ],
    "abuse_contacts" : [ "ABDWE" ],
    "date_created" : "2008-05-08",
    "date_updated" : "2021-06-08",
    "source" : "lacnic"
  },
  "administrative_contacts" : [ {
    "handle" : "USILT23",
    "country" : "BR",
    "email" : [ "hostmaster@under.com.br" ],
    "date_created" : "2021-06-08",
    "date_updated" : "2022-04-16",
    "source" : "lacnic"
  } ],
  "technical_contacts" : [ {
    "handle" : "USILT23",
    "country" : "BR",
    "email" : [ "hostmaster@under.com.br" ],
    "date_created" : "2021-06-08",
    "date_updated" : "2022-04-16",
    "source" : "lacnic"
  } ],
  "abuse_contacts" : [ {
    "handle" : "ABDWE",
    "country" : "BR",
    "email" : [ "abuse@under.com.br" ],
    "date_created" : "2011-04-26",
    "date_updated" : "2021-06-07",
    "source" : "lacnic"
  } ]
}

Peers

AS Number	Description	Country
AS11432	Telium Telecomunicaï¿½ï¿½es Ltda	BR
AS60602	Inovare-Prim SRL	MD
AS14537	Continent 8 LLC	US
AS198150	SIACOM JSC	GE
AS269416	SEMEAR TELECOM EIRELI	BR
AS199524	G-Core Labs S.A.	LU
AS263283	JGNET - J G DE OLIVEIRA MATOS & CIA LTDA	BR
AS262588	EXPLORERNET INFOLINK TECNOLOGIA E TELECOMUNICACOES	BR
AS22548	Núcleo de Inf. e Coord. do Ponto BR NIC.BR	BR
AS60503	FNX Tecnologia LTDA	BR

Upstreams

AS Number	Description	Country
AS39120	Convergenze S.p.A.	IT
AS264409	GRUPO YAX	BR
AS35280	F5 Networks SARL	FR
AS28220	Alares Cabo Servicos de Telecomunicacoes S.A.	BR
AS22381	SAMM TECNOLOGIA E TELECOMUNICACOES S.A	BR
AS6939	Hurricane Electric LLC	US
AS6057	Administracion Nacional de Telecomunicaciones	UY
AS52468	UFINET PANAMA S.A.	PA
AS7713	Telekomunikasi Indonesia PT	ID
AS3356	Level 3 Parent, LLC	US

Downstreams

AS Number	Description	Country
AS270424	ServerDo Serviços de Informática Ltda	BR
AS26615	TIM S/A	BR
AS265380	WSU Tecnologia Ltda	BR
AS28138	WN INTERNET	BR