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AS263789 CORTUC S.A. | IPGeolocation.io

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

CORTUC S.A. fonoglobal.com.ar

AR 6 Routes

AS Data

AS263789

AS263789 – CORTUC S.A.

AS Number	263789
AS Name	AR-COSA91-LACNIC
Organization	CORTUC S.A.()
Country	AR
Website	fonoglobal.com.ar
Number of IPv4 Routes	5
Number of IPv6 Routes	1
ASN type	ISP
Registry	lacnic
Date Allocated	2015-06-24

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Use ASN data for AS263789 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
138.121.86.0/24	AS263789	CORTUC S.A.	CORTUC S.A.	256
138.121.87.0/24	AS263789	CORTUC S.A.	CORTUC S.A.	256
2803:8c40::/32	AS263789	CORTUC S.A.	CORTUC S.A.	~79×10²⁷
138.121.84.0/22	AS263789	CORTUC S.A.	CORTUC S.A.	1024
138.121.84.0/24	AS263789	CORTUC S.A.	CORTUC S.A.	256
138.121.85.0/24	AS263789	CORTUC S.A.	CORTUC 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.
%  2026-03-14 09:23:16 (-03 -03:00)

aut-num:     AS263789
owner:       CORTUC S.A.
ownerid:     AR-COSA91-LACNIC
responsible: Gabriel Cortes
address:     Juana Azurduy, 3191, -
address:     1429 - Buenos Aires - CABA
country:     AR
phone:       +54  1170770000 [104]
owner-c:     IGC10
routing-c:   IGC10
abuse-c:     IGC10
created:     20150624
changed:     20150624

nic-hdl:     IGC10
person:      Imer Gabriel Cortes
e-mail:      gcortes@fonoglobal.com.ar
address:     Juana Azurduy, 3191, -
address:     1429 - CABA - CABA
country:     AR
phone:       +54  1170770000 [104]
created:     20150517
changed:     20220422

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

Parsed Whois Response

Peers

AS Number	Description	Country
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
AS18747	IFX Corporation	US

Upstreams

AS Number	Description	Country
AS7195	EDGEUNO S.A.S	CO
AS6939	Hurricane Electric LLC	US
AS6057	Administracion Nacional de Telecomunicaciones	UY
AS174	Cogent Communications, LLC	US

Frequently Asked Questions

What is ASN AS263789?

ASN AS263789 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS263789?

AS263789 is listed under CORTUC S.A..

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.