ASN AS27747 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS27747?

AS27747 is listed under Telecentro S.A..

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.

AS27747 Telecentro S.A. | IPGeolocation.io

ASN Lookup Tool

Telecentro S.A. telecentro.net.ar

AR 1753 Routes

AS Data

AS27747

AS27747 – Telecentro S.A.

AS Number	27747
AS Name	AR-TESA26-LACNIC
Organization	Telecentro S.A.
Country	AR
Website	telecentro.net.ar
Number of IPv4 Routes	1722
Number of IPv6 Routes	31
ASN type	ISP
Registry	lacnic
Date Allocated	2004-07-06

ASN Intelligence API for production workflows

Use ASN data for AS27747 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
181.47.229.0/24	AS27747	Telecentro S.A.	Telecentro S.A. - Clientes Residenciales	256
200.115.244.0/22	AS27747	Telecentro S.A.	Telecentro S.A. - Clientes Residenciales	1024
200.125.87.0/24	AS27747	Telecentro S.A.	Telecentro S.A. - Clientes Residenciales	256
181.45.192.0/21	AS27747	Telecentro S.A.	Telecentro S.A.	2048
186.18.54.0/24	AS27747	Telecentro S.A.	Telecentro S.A. - Clientes Residenciales	256
190.55.140.0/22	AS27747	Telecentro S.A.	Telecentro S.A. - Clientes Residenciales	1024
186.23.120.0/21	AS27747	Telecentro S.A.	Telecentro S.A.	2048
181.44.173.0/24	AS27747	Telecentro S.A.	Telecentro S.A.	256
186.22.6.0/24	AS27747	Telecentro S.A.	Telecentro S.A.	256
186.22.239.0/24	AS27747	Telecentro S.A.	Telecentro S.A.	256

Raw Whois Response

% Joint Whois - whois.lacnic.net
%  This server accepts single ASN, IPv4 or IPv6 queries

% LACNIC resource: whois.lacnic.net


% Copyright LACNIC lacnic.net
%  The data below is provided for information purposes
%  and to assist persons in obtaining information about or
%  related to AS and IP numbers registrations
%  By submitting a whois query, you agree to use this data
%  only for lawful purposes.
%  2026-04-01 09:31:31 (-03 -03:00)

aut-num:     AS27747
owner:       Telecentro S.A.
ownerid:     AR-TESA26-LACNIC
responsible: Administrador de Direcciones IP
address:     Coronel Apolinario Figueroa, 254, 
address:     C1414EDF - Buenos Aires - BA
country:     AR
phone:       +54 11 6380-9500
owner-c:     FRH
routing-c:   FRH
abuse-c:     FRH
created:     20040706
changed:     20061207

nic-hdl:     FRH
person:      Administrador de Direcciones
e-mail:      ipadmin@telecentro.net.ar
address:     Coronel Apolinario Figueroa, 254, -
address:     C1414EDF - Buenos Aires - 
country:     AR
phone:       +54  1139770000 [1129]
created:     20060731
changed:     20251118

% whois.lacnic.net accepts only direct match queries.
% Types of queries are: POCs, ownerid, CIDR blocks, IP
% and AS numbers.

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.lacnic.net",
  "aut_nums" : [ {
    "aut_num" : "AS27747",
    "country" : "AR",
    "admin_contacts" : [ "FRH" ],
    "tech_contacts" : [ "FRH" ],
    "abuse_contacts" : [ "FRH" ],
    "date_created" : "2004-07-06",
    "date_updated" : "2006-12-07",
    "source" : "lacnic"
  } ],
  "organization" : {
    "handle" : "AR-TESA26-LACNIC",
    "name" : "Telecentro S.A.",
    "address" : [ "Coronel Apolinario Figueroa, 254,", "C1414EDF - Buenos Aires - BA" ],
    "street" : "Coronel Apolinario Figueroa",
    "city" : "Buenos Aires",
    "state" : "BA",
    "zip_code" : "C1414EDF",
    "country" : [ "AR" ],
    "phone" : [ "+54 11 6380-9500" ],
    "abuse_contacts" : [ "FRH" ],
    "date_created" : "2004-07-06",
    "date_updated" : "2006-12-07",
    "source" : "lacnic"
  },
  "administrative_contacts" : [ {
    "handle" : "FRH",
    "address" : [ "Coronel Apolinario Figueroa, 254, -", "C1414EDF - Buenos Aires -" ],
    "street" : "Coronel Apolinario Figueroa",
    "city" : "Buenos Aires",
    "zip_code" : "C1414EDF",
    "country" : "AR",
    "email" : [ "ipadmin@telecentro.net.ar" ],
    "phone" : [ "+54  1139770000 [1129]" ],
    "date_created" : "2006-07-31",
    "date_updated" : "2025-11-18",
    "source" : "lacnic"
  } ],
  "technical_contacts" : [ {
    "handle" : "FRH",
    "address" : [ "Coronel Apolinario Figueroa, 254, -", "C1414EDF - Buenos Aires -" ],
    "street" : "Coronel Apolinario Figueroa",
    "city" : "Buenos Aires",
    "zip_code" : "C1414EDF",
    "country" : "AR",
    "email" : [ "ipadmin@telecentro.net.ar" ],
    "phone" : [ "+54  1139770000 [1129]" ],
    "date_created" : "2006-07-31",
    "date_updated" : "2025-11-18",
    "source" : "lacnic"
  } ],
  "abuse_contacts" : [ {
    "handle" : "FRH",
    "address" : [ "Coronel Apolinario Figueroa, 254, -", "C1414EDF - Buenos Aires -" ],
    "street" : "Coronel Apolinario Figueroa",
    "city" : "Buenos Aires",
    "zip_code" : "C1414EDF",
    "country" : "AR",
    "email" : [ "ipadmin@telecentro.net.ar" ],
    "phone" : [ "+54  1139770000 [1129]" ],
    "date_created" : "2006-07-31",
    "date_updated" : "2025-11-18",
    "source" : "lacnic"
  } ]
}

Peers

AS Number	Description	Country
AS273240	DATAWISE SA	AR
AS19315	Banelco S.A.	AR
AS6762	TELECOM ITALIA SPARKLE S.p.A.	IT
AS7195	EDGEUNO S.A.S	CO
AS1239	Cogent Communications, LLC	US
AS6939	Hurricane Electric LLC	US
AS6057	Administracion Nacional de Telecomunicaciones	UY
AS174	Cogent Communications, LLC	US
AS22927	Telefonica de Argentina	AR
AS263756	LINKUP INTERNET SRL	AR

Upstreams

AS Number	Description	Country
AS6762	TELECOM ITALIA SPARKLE S.p.A.	IT
AS7195	EDGEUNO S.A.S	CO
AS6939	Hurricane Electric LLC	US
AS6057	Administracion Nacional de Telecomunicaciones	UY
AS3356	Level 3 Parent, LLC	US
AS174	Cogent Communications, LLC	US
AS22927	Telefonica de Argentina	AR

Downstreams

AS Number	Description	Country
AS273240	DATAWISE SA	AR
AS13335	Cloudflare, Inc.	US
AS19315	Banelco S.A.	AR
AS11014	CPS	AR
AS263756	LINKUP INTERNET SRL	AR