ASN AS16973 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS16973?

AS16973 is listed under T Four Services 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.

AS16973 T Four Services S.A | IPGeolocation.io

ASN Lookup Tool

T Four Services S.A tagsystems.com

CR 14 Routes

AS Data

AS16973

AS16973 – T Four Services S.A

AS Number	16973
AS Name	CR-CHSA-LACNIC
Organization	T Four Services S.A(CR-CHSA-LACNIC)
Country	CR
Website	tagsystems.com
Number of IPv4 Routes	13
Number of IPv6 Routes	1
ASN type	ISP
Registry	lacnic
Date Allocated	2000-07-07

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Use ASN data for AS16973 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
190.4.90.0/24	AS16973	T Four Services S.A	TAG Systems	256
2803:3100::/32	AS0		T-Four Services S.A	~79×10²⁷
190.4.95.0/24	AS16973	T Four Services S.A	TAG Systems	256
168.205.66.0/24	AS16973	T Four Services S.A	TAG Systems	256
190.4.88.0/21	AS16973	T Four Services S.A	TAG Systems	2048
190.4.92.0/24	AS16973	T Four Services S.A	TAG Systems	256
190.4.88.0/24	AS16973	T Four Services S.A	TAG Systems	256
190.4.91.0/24	AS16973	T Four Services S.A	TAG Systems	256
190.4.94.0/24	AS16973	T Four Services S.A	TAG Systems	256
168.205.64.0/24	AS16973	T Four Services S.A	TAG Systems	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.
%  2026-03-09 09:35:33 (-03 -03:00)

aut-num:     AS16973
owner:       T-Four Services S.A
ownerid:     CR-CHSA-LACNIC
responsible: Adrian Murillo
address:     Centro Tecnologico - Tibas, 11401, -
address:     -- - San Jose - 
country:     CR
phone:       +506  46008240 [104]
owner-c:     IDS8
routing-c:   IDS8
abuse-c:     IDS8
created:     20000707
changed:     20230620
inetnum:     168.205.64.0/22

nic-hdl:     IDS8
person:      Adrian Murillo
e-mail:      amurillo@tagsystems.com
address:     Centro Tecnologico CODISA- Tibas, -, -
address:     11401 - San Jose - 
country:     CR
phone:       +506  46008240 [104]
created:     20121112
changed:     20250606

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


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       16973
ASName:         LACNIC-16973
ASHandle:       AS16973
RegDate:        2002-07-27
Updated:        2007-12-17
Comment:        This AS is under LACNIC responsibility for further allocations to
Comment:        users in LACNIC region.
Comment:        Please see http://www.lacnic.net/ for further details, or check the
Comment:        WHOIS server located at http://whois.lacnic.net    
Ref:            https://rdap.arin.net/registry/autnum/16973

ResourceLink:  http://lacnic.net/cgi-bin/lacnic/whois
ResourceLink:  whois.lacnic.net


OrgName:        Latin American and Caribbean IP address Regional Registry
OrgId:          LACNIC
Address:        Rambla Republica de Mexico 6125
City:           Montevideo
StateProv:      
PostalCode:     11400
Country:        UY
RegDate:        2002-07-27
Updated:        2018-03-15
Ref:            https://rdap.arin.net/registry/entity/LACNIC

ReferralServer:  whois://whois.lacnic.net
ResourceLink:  http://lacnic.net/cgi-bin/lacnic/whois

OrgAbuseHandle: LWI100-ARIN
OrgAbuseName:   LACNIC Whois Info
OrgAbusePhone:  +598-2604-2222 
OrgAbuseEmail:  abuse@lacnic.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/LWI100-ARIN

OrgTechHandle: LACNIC-ARIN
OrgTechName:   LACNIC Whois Info
OrgTechPhone:  +598-2604-2222 
OrgTechEmail:  whois-contact@lacnic.net
OrgTechRef:    https://rdap.arin.net/registry/entity/LACNIC-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS13335	Cloudflare, Inc.	US
AS52468	UFINET PANAMA S.A.	PA
AS23520	Columbus Networks USA, Inc.	US
AS52263	Telecable Economico S.A.	CR
AS52342	Critical Colocation, S.A.	CR

Upstreams

AS Number	Description	Country
AS13335	Cloudflare, Inc.	US
AS52468	UFINET PANAMA S.A.	PA
AS23520	Columbus Networks USA, Inc.	US
AS52263	Telecable Economico S.A.	CR