What is ASN AS263920?

ASN AS263920 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS263920?

AS263920 is listed under MAST TELECOMUNICACOES E INFORMATICA 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.

AS263920 MAST TELECOMUNICACOES E INFORMATICA LTDA

ASN Lookup Tool

MAST TELECOMUNICACOES E INFORMATICA LTDA masttelecom.net.br

BR 19 Routes

AS Data

AS263920

AS263920 – MAST TELECOMUNICACOES E INFORMATICA LTDA

AS Number	263920
AS Name	12.640.121/0001-87
Organization	MAST TELECOMUNICACOES E INFORMATICA LTDA
Country	BR
Website	masttelecom.net.br
Number of IPv4 Routes	7
Number of IPv6 Routes	12
ASN type	ISP
Registry	lacnic
Date Allocated	2015-08-12

ASN Intelligence API for production workflows

Use ASN data for AS263920 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
138.185.240.0/24	AS263920	MAST TELECOMUNICACOES E INFORMATICA LTDA	MAST TELECOMUNICACOES E INFORMATICA LTDA	256
138.185.242.0/23	AS263920	MAST TELECOMUNICACOES E INFORMATICA LTDA	MAST TELECOMUNICACOES E INFORMATICA LTDA	512
2804:27c0:2000::/35	AS263920	MAST TELECOMUNICACOES E INFORMATICA LTDA	MAST TELECOMUNICACOES E INFORMATICA LTDA	~1×10³⁰
2804:27c0:e000::/35	AS263920	MAST TELECOMUNICACOES E INFORMATICA LTDA	MAST TELECOMUNICACOES E INFORMATICA LTDA	~1×10³⁰
2804:27c0::/33	AS263920	MAST TELECOMUNICACOES E INFORMATICA LTDA	MAST TELECOMUNICACOES E INFORMATICA LTDA	~40×10²⁷
2804:27c0:8000::/35	AS263920	MAST TELECOMUNICACOES E INFORMATICA LTDA	MAST TELECOMUNICACOES E INFORMATICA LTDA	~1×10³⁰
2804:27c0::/48	AS263920	MAST TELECOMUNICACOES E INFORMATICA LTDA	MAST TELECOMUNICACOES E INFORMATICA LTDA	~1×10²⁴
138.185.242.0/24	AS263920	MAST TELECOMUNICACOES E INFORMATICA LTDA	MAST TELECOMUNICACOES E INFORMATICA LTDA	256
2804:27c0::/32	AS263920	MAST TELECOMUNICACOES E INFORMATICA LTDA	MAST TELECOMUNICACOES E INFORMATICA LTDA	~79×10²⁷
138.185.241.0/24	AS263920	MAST TELECOMUNICACOES E INFORMATICA LTDA	MAST TELECOMUNICACOES E INFORMATICA LTDA	256

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.
% 2026-05-20T09:32:16-03:00 - 136.227.167.180

aut-num:     AS263920
owner:       MAST TELECOMUNICACOES E INFORMATICA LTDA
ownerid:     12.640.121/0001-87
responsible: Aldo Artur de Figueiredo
country:     BR
owner-c:     ALAFI70
routing-c:   NOMTE8
abuse-c:     NOMTE8
created:     20150812
changed:     20210909
inetnum:     138.185.240.0/22
inetnum:     2804:27c0::/32

nic-hdl-br:  ALAFI70
person:      Aldo Artur de Figueiredo
e-mail:      aldo@masttelecom.net.br
country:     BR
created:     20140424
changed:     20170418

nic-hdl-br:  NOMTE8
person:      NOC Mast Telecom
e-mail:      noc@masttelecom.net.br
country:     BR
created:     20180216
changed:     20190225

% 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" : "AS263920",
    "country" : "BR",
    "admin_contacts" : [ "ALAFI70" ],
    "tech_contacts" : [ "NOMTE8" ],
    "abuse_contacts" : [ "NOMTE8" ],
    "date_created" : "2015-08-12",
    "date_updated" : "2021-09-09",
    "source" : "lacnic"
  } ],
  "organization" : {
    "handle" : "12.640.121/0001-87",
    "name" : "MAST TELECOMUNICACOES E INFORMATICA LTDA",
    "country" : [ "BR" ],
    "abuse_contacts" : [ "NOMTE8" ],
    "date_created" : "2015-08-12",
    "date_updated" : "2021-09-09",
    "source" : "lacnic"
  },
  "administrative_contacts" : [ {
    "handle" : "ALAFI70",
    "country" : "BR",
    "email" : [ "aldo@masttelecom.net.br" ],
    "date_created" : "2014-04-24",
    "date_updated" : "2017-04-18",
    "source" : "lacnic"
  } ],
  "technical_contacts" : [ {
    "handle" : "NOMTE8",
    "country" : "BR",
    "email" : [ "noc@masttelecom.net.br" ],
    "date_created" : "2018-02-16",
    "date_updated" : "2019-02-25",
    "source" : "lacnic"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NOMTE8",
    "country" : "BR",
    "email" : [ "noc@masttelecom.net.br" ],
    "date_created" : "2018-02-16",
    "date_updated" : "2019-02-25",
    "source" : "lacnic"
  } ]
}

Peers

AS Number	Description	Country
AS199081	Lancom Ltd.	GR
AS263903	INFORBARRA TELECOM	BR
AS7195	EDGEUNO S.A.S	CO
AS262589	SAMM TECNOLOGIA E TELECOMUNICACOES S.A	BR
AS6939	Hurricane Electric LLC	US
AS60602	Inovare-Prim SRL	MD
AS267330	JLCONECT PB	BR
AS266142	Bahiadados Telecom Ltda.	BR
AS14537	Continent 8 LLC	US
AS198150	SIACOM JSC	GE

Upstreams

AS Number	Description	Country
AS61568	ALOO TELECOM FSF TECNOLOGIA SA	BR
AS39120	Convergenze S.p.A.	IT
AS265290	Uplink Telecom	BR
AS7195	EDGEUNO S.A.S	CO
AS28220	Alares Cabo Servicos de Telecomunicacoes S.A.	BR
AS14840	BR.Digital Telecom	BR
AS6939	Hurricane Electric LLC	US
AS6057	Administracion Nacional de Telecomunicaciones	UY

Downstreams

AS Number	Description	Country
AS267339	3M Fibra	BR
AS267287	MEGANET PROVEDOR	BR
AS266096	NAVEGAR PROVEDOR	BR
AS267330	JLCONECT PB	BR
AS270305	Acesse Internet Ltda	BR
AS269255	JACINTO SILVEIRA COSTA ME	BR
AS270924	JPA Telecom	BR