ASN AS27818 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS27818?

AS27818 is listed under Cotesma.

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.

AS27818 Cotesma | IPGeolocation.io

ASN Lookup Tool

Cotesma cotesma.com.ar

AR 92 Routes

AS Data

AS27818

AS27818 – Cotesma

AS Number	27818
AS Name	AR-COTE6-LACNIC
Organization	Cotesma()
Country	AR
Website	cotesma.com.ar
Number of IPv4 Routes	74
Number of IPv6 Routes	18
ASN type	ISP
Registry	lacnic
Date Allocated	2006-03-31

ASN Intelligence API for production workflows

Use ASN data for AS27818 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2803:3380:2000::/36	AS27818	Cotesma	Cotesma	~5×10²⁷
201.220.190.0/24	AS27818	Cotesma	Cotesma	256
181.114.144.0/24	AS27818	Cotesma	Cotesma	256
2803:3380:b000::/36	AS27818	Cotesma	Cotesma	~5×10²⁷
201.220.174.0/24	AS27818	Cotesma	Cotesma	256
2803:3380:1200::/40	AS27818	Cotesma	Cotesma	~309×10²⁴
181.114.156.0/24	AS27818	Cotesma	Cotesma	256
131.161.155.0/24	AS27818	Cotesma	Cotesma	256
2803:3380:d000::/36	AS27818	Cotesma	Cotesma	~5×10²⁷
181.114.135.0/24	AS27818	Cotesma	Cotesma	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.
%  2026-03-12 08:03:15 (-03 -03:00)

aut-num:     AS27818
owner:       Cotesma
ownerid:     AR-COTE6-LACNIC
responsible: Andres Lacentra
address:     Capitán Drury, 761, -
address:     8370 - San Martín de los Andes - NQN - NQ
country:     AR
phone:       +0054  2972427000 [102]
owner-c:     ANM7
routing-c:   ANM7
abuse-c:     ANM7
created:     20060331
changed:     20060401
inetnum:     2803:3380::/32
inetnum:     131.161.152.0/22
inetnum:     181.114.128.0/19
inetnum:     201.220.176.0/20
inetnum:     201.220.160.0/20

nic-hdl:     ANM7
person:      COTESMA SMA
e-mail:      marcos.pytel@cotesma.com.ar
address:     Cap. Drury, 761, -
address:     8370 - San Martin de los Andes - NQ
country:     AR
phone:       +54  2972427000 [2200]
created:     20050908
changed:     20230622

% 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
AS52361	ARSAT - Empresa Argentina de Soluciones Satelitales S.A.	AR
AS52294	CABASE Camara Arg de Base de Datos y Serv en Linea	AR
AS52361	ARSAT Empresa Argentina de Soluciones Satelitales S.A.	AR
AS22927	Telefonica de Argentina	AR
AS7049	Silica Networks Argentina S.A.	AR

Upstreams

AS Number	Description	Country
AS52294	CABASE Camara Arg de Base de Datos y Serv en Linea	AR
AS52361	ARSAT Empresa Argentina de Soluciones Satelitales S.A.	AR
AS22927	Telefonica de Argentina	AR
AS7049	Silica Networks Argentina S.A.	AR