AS13474 — AS13474 - Banco de Galicia y Buenos Aires

AS13474 announces 6 IPv4 prefixes covering 32,000 addresses and 0 IPv6 prefixes.

About this network

The netname is the address range written out with a space either side of the hyphen, and it is the same on all six blocks.

What it's used for

• A bank's network. 32,000 addresses across six IPv4 prefixes, five observed BGP neighbours, and no IPv6 announced.

Notable

• Every block is netname 161.190.0.0 - 161.190.255.255, the whole /16 written as a range.
• The announcements descend in size: a /18, a /19, a /20, a /21, a /22 and a /24, each covering the space the previous one left.
• Eighteen addresses were queried for reverse DNS and none returned a name.

Interesting

• A netname containing spaces is a registry that stores ranges rather than named objects and renders the boundaries into the field a name should hold. There is nothing to look up and nothing to recognise; the record describes itself and stops.
• Six announcements stepping down by one bit each is a network dividing its space by halves and advertising each half separately. It gives every piece its own routing entry, which lets each be steered independently and stops any of them being announced by somebody else unnoticed.
• A bank keeping a whole /16 and advertising it in pieces is a network built when address space was granted generously to institutions that asked, and kept because nothing forces it back.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 161.190.0.0/21
• 161.190.8.0/22
• 161.190.13.0/24
• 161.190.16.0/20
• 161.190.32.0/19
• 161.190.64.0/18

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS11664 Techtel LMDS Comunicaciones Interactivas S.A.
• AS6939 Hurricane Electric LLC
• AS7303 Telecom Argentina S.A.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS11664 Techtel LMDS Comunicaciones Interactivas S.A.
• AS6939 Hurricane Electric LLC
• AS7303 Telecom Argentina S.A.

Routing security

• RPKI: 16 valid, 0 invalid and 0 not-found announcements; 1 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 2 route objects.
• Listed in as-sets: AS-CLARO-AUP-CUSTOMERS, AS-EMBRATELNET, AS-HGC-INTL, AS10834:AS-TEFARGDATA, AS11058:AS-MEMBERS, AS198949:AS-SD, AS22927:AS-TEFARGENTINA, AS7303:AS-CLIENTES.