AS3081 — CITI15

AS3081 announces 16 IPv4 prefixes covering 4,864 addresses and 0 IPv6 prefixes.

About this network

CITI15 is another of the autonomous systems operated by Citigroup, the global banking and financial services company.

What it's used for

• Citigroup's own corporate and banking network. The announced prefixes are drawn largely from the bank's legacy 192.193.0.0/16-adjacent blocks, used for internal systems, office connectivity, and bank services.

Notable

• Enterprise address space belonging to a bank, not an ISP or a host. There are no hosting tenants or residential subscribers behind these IPs.
• Citi numbers its ASNs sequentially (CITI1, CITI7, CITI15, and others), so this one sits alongside siblings such as AS3073. ARIN registered the block in 1993.

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

Announced prefixes

• 192.193.18.0/24
• 192.193.20.0/23
• 192.193.22.0/24
• 192.193.25.0/24
• 192.193.34.0/23
• 192.193.36.0/24
• 192.193.38.0/24
• 192.193.56.0/24
• 192.193.120.0/24
• 192.193.172.0/23
• 192.193.174.0/24
• 192.193.176.0/24
• 192.193.193.0/24
• 192.193.213.0/24
• 199.67.131.0/24
• 199.67.137.0/24

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS701 Verizon Business

Downstream networks

• AS33463 Citigroup Inc.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS701 Verizon Business
• AS33463 Citigroup Inc.

Routing security

• RPKI: 0 valid, 0 invalid and 19 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 16% of announcements registered; 3 route objects.
• Listed in as-sets: AS-PROLE, AS-UDOS.