What is ASN AS266752?

ASN AS266752 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS266752?

AS266752 is listed under SILVESTRI MARCO FEDERICO.

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.

AS266752 SILVESTRI MARCO FEDERICO

ASN Lookup Tool

SILVESTRI MARCO FEDERICO cgmi.com.ar

AR 5 Routes

AS Data

AS266752

AS266752 – SILVESTRI MARCO FEDERICO

AS Number	266752
AS Name	AR-MFSI-LACNIC
Organization	SILVESTRI MARCO FEDERICO
Country	AR
Website	cgmi.com.ar
Number of IPv4 Routes	5
Number of IPv6 Routes	0
ASN type	INDIVIDUAL
Registry	lacnic
Date Allocated	2018-03-12

ASN Intelligence API for production workflows

Use ASN data for AS266752 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
45.232.144.0/22	AS266752	SILVESTRI MARCO FEDERICO	Federacion Net	1024
45.232.144.0/24	AS266752	SILVESTRI MARCO FEDERICO	Federacion Net	256
45.232.145.0/24	AS266752	SILVESTRI MARCO FEDERICO	Federacion Net	256
45.232.146.0/24	AS266752	SILVESTRI MARCO FEDERICO	Federacion Net	256
45.232.147.0/24	AS266752	SILVESTRI MARCO FEDERICO	Federacion Net	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.
%  2026-06-01 13:00:27 (-03 -03:00)

aut-num:     AS266752
owner:       SILVESTRI MARCO FEDERICO
ownerid:     AR-MFSI-LACNIC
responsible: Marco Federico Silvestri
address:     Caseros 528/ null 3206 - Federacion AR, , 
address:     3206 - Federacion - ER
country:     AR
phone:       +54 3456 481395
owner-c:     MFS42
routing-c:   CMM
abuse-c:     MFS42
created:     20180312
changed:     20180313
inetnum:     2803:bb20::/32
inetnum:     45.232.144.0/22

nic-hdl:     MFS42
person:      Marco Federico Silvestri
e-mail:      info@federacionnet.com.ar
address:     San Martin, 515, -
address:     3206 - Federacion - ER
country:     AR
phone:       +54  3456481888 [120]
created:     20141221
changed:     20220628

nic-hdl:     CMM
person:      Claudio Miguel Godoy Martín
e-mail:      soporte@cgmi.com.ar
address:     Calle 78 bis, 933, -
address:     B1912AMY - La Plata - Buenos Aires
country:     AR
phone:       +54  2216443090 [0000]
created:     20040302
changed:     20220628

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

 
% 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.
%  2026-05-31 09:43:25 (-03 -03:00)

aut-num:     AS266752
owner:       SILVESTRI MARCO FEDERICO
ownerid:     AR-MFSI-LACNIC
responsible: Marco Federico Silvestri
address:     Caseros 528/ null 3206 - Federacion AR, , 
address:     3206 - Federacion - ER
country:     AR
phone:       +54 3456 481395
owner-c:     MFS42
routing-c:   CMM
abuse-c:     MFS42
created:     20180312
changed:     20180313
inetnum:     2803:bb20::/32
inetnum:     45.232.144.0/22

nic-hdl:     MFS42
person:      Marco Federico Silvestri
e-mail:      info@federacionnet.com.ar
address:     San Martin, 515, -
address:     3206 - Federacion - ER
country:     AR
phone:       +54  3456481888 [120]
created:     20141221
changed:     20220628

nic-hdl:     CMM
person:      Claudio Miguel Godoy Martín
e-mail:      soporte@cgmi.com.ar
address:     Calle 78 bis, 933, -
address:     B1912AMY - La Plata - Buenos Aires
country:     AR
phone:       +54  2216443090 [0000]
created:     20040302
changed:     20220628

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

 
% 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.
%  2026-05-30 09:19:39 (-03 -03:00)

aut-num:     AS266752
owner:       SILVESTRI MARCO FEDERICO
ownerid:     AR-MFSI-LACNIC
responsible: Marco Federico Silvestri
address:     Caseros 528/ null 3206 - Federacion AR, , 
address:     3206 - Federacion - ER
country:     AR
phone:       +54 3456 481395
owner-c:     MFS42
routing-c:   CMM
abuse-c:     MFS42
created:     20180312
changed:     20180313
inetnum:     2803:bb20::/32
inetnum:     45.232.144.0/22

nic-hdl:     MFS42
person:      Marco Federico Silvestri
e-mail:      info@federacionnet.com.ar
address:     San Martin, 515, -
address:     3206 - Federacion - ER
country:     AR
phone:       +54  3456481888 [120]
created:     20141221
changed:     20220628

nic-hdl:     CMM
person:      Claudio Miguel Godoy Martín
e-mail:      soporte@cgmi.com.ar
address:     Calle 78 bis, 933, -
address:     B1912AMY - La Plata - Buenos Aires
country:     AR
phone:       +54  2216443090 [0000]
created:     20040302
changed:     20220628

% 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" : "AS266752",
    "country" : "AR",
    "admin_contacts" : [ "MFS42" ],
    "tech_contacts" : [ "CMM" ],
    "abuse_contacts" : [ "MFS42" ],
    "date_created" : "2018-03-12",
    "date_updated" : "2018-03-13",
    "source" : "lacnic"
  }, {
    "aut_num" : "AS266752",
    "country" : "AR",
    "admin_contacts" : [ "MFS42" ],
    "tech_contacts" : [ "CMM" ],
    "abuse_contacts" : [ "MFS42" ],
    "date_created" : "2018-03-12",
    "date_updated" : "2018-03-13",
    "source" : "lacnic"
  }, {
    "aut_num" : "AS266752",
    "country" : "AR",
    "admin_contacts" : [ "MFS42" ],
    "tech_contacts" : [ "CMM" ],
    "abuse_contacts" : [ "MFS42" ],
    "date_created" : "2018-03-12",
    "date_updated" : "2018-03-13",
    "source" : "lacnic"
  } ],
  "organization" : {
    "handle" : "AR-MFSI-LACNIC",
    "name" : "SILVESTRI MARCO FEDERICO",
    "address" : [ "Caseros 528/ null 3206 - Federacion AR, ,", "3206 - Federacion - ER" ],
    "street" : "Caseros",
    "city" : "Federacion",
    "zip_code" : "3206",
    "country" : [ "AR" ],
    "phone" : [ "+54 3456 481395" ],
    "abuse_contacts" : [ "MFS42" ],
    "date_created" : "2018-03-12",
    "date_updated" : "2018-03-13",
    "source" : "lacnic",
    "addressCountry" : "ER"
  },
  "administrative_contacts" : [ {
    "handle" : "MFS42",
    "address" : [ "San Martin, 515, -", "3206 - Federacion - ER" ],
    "street" : "San Martin",
    "city" : "Federacion",
    "zip_code" : "3206",
    "country" : "AR",
    "email" : [ "info@federacionnet.com.ar" ],
    "phone" : [ "+54  3456481888 [120]" ],
    "date_created" : "2014-12-21",
    "date_updated" : "2022-06-28",
    "source" : "lacnic",
    "addressCountry" : "ER"
  } ],
  "technical_contacts" : [ {
    "handle" : "CMM",
    "address" : [ "Calle 78 bis, 933, -", "B1912AMY - La Plata - Buenos Aires" ],
    "street" : "Calle 78 Bis",
    "city" : "La Plata",
    "state" : "BUENOS AIRES",
    "zip_code" : "B1912AMY",
    "country" : "AR",
    "email" : [ "soporte@cgmi.com.ar" ],
    "phone" : [ "+54  2216443090 [0000]" ],
    "date_created" : "2004-03-02",
    "date_updated" : "2022-06-28",
    "source" : "lacnic"
  } ],
  "abuse_contacts" : [ {
    "handle" : "MFS42",
    "address" : [ "San Martin, 515, -", "3206 - Federacion - ER" ],
    "street" : "San Martin",
    "city" : "Federacion",
    "zip_code" : "3206",
    "country" : "AR",
    "email" : [ "info@federacionnet.com.ar" ],
    "phone" : [ "+54  3456481888 [120]" ],
    "date_created" : "2014-12-21",
    "date_updated" : "2022-06-28",
    "source" : "lacnic",
    "addressCountry" : "ER"
  } ]
}

Peers

AS Number	Description	Country
AS7303	Telecom Argentina S.A.	AR
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS7303	Telecom Argentina S.A.	AR
AS3356	Level 3 Parent, LLC	US