AS Number
AS21756
AS Name
Org Name
SIDERCA S.A.I.C.
Country
Argentina
Registry

RegDate

20250918

Updated

20250918

AS21756 Looking Glass
IPv4Prefixes

5

IPv6Prefixes

0

IPv4 NUMs

1,280

IPv6 NUMs(/64)

0

1,280 IPv4 Addresses
CIDR Description IP Num
200.1.117.0/24
IRR Valid
256
200.9.229.0/24
IRR Valid
256
200.69.130.0/24
IRR Valid
256
200.80.222.0/24
IRR Valid
256
201.234.38.0/24
ROA Signed and Valid IRR Valid
Level 3 Argentina S.A. 256
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS3549 LVLT-3549 - Level 3 Parent, LLC, US United States 5,031,168 68,725,243,904 IPv4 IPv4
AS11014 CPS, AR Argentina 46,336 4,063,232 IPv4 IPv4
AS11664 Techtel LMDS Comunicaciones Interactivas S.A., AR Argentina 1,138,944 17,179,869,184 IPv4 IPv4
aut-num:     AS21756
owner:       SIDERCA S.A.I.C.
ownerid:     AR-ASTE1-LACNIC
responsible: Matias Marzullo
address:     Della Paolera, 299, Piso 12
address:     1001 - Buenos Aires - CF
country:     AR
phone:       +54  1159849432 [0000]
owner-c:     MAM715
routing-c:   MAM715
abuse-c:     MAM715
created:     20010615
changed:     20260318

nic-hdl:     MAM715
person:      Matias Marzullo
e-mail:      mmarzullo@tenaris.com
address:     dr simini, 250, 
address:      - Campana - buenos aires
country:     AR
phone:       +54  1159849432
created:     20250918
changed:     20250918