AS10372 — WELLSFARGO-10372-10376

AS10372 announces 26 IPv4 prefixes covering 33,792 addresses and 0 IPv6 prefixes.

About this network

WELLSFARGO-10372-10376 is Wells Fargo Bank, N.A., one of the largest US banks. The handle names a range of ASNs — this AS and AS10376 are registered together and both carry the bank's own network.

What it's used for

• Corporate and retail banking infrastructure: branch and office connectivity, data centres, internal applications, and the internet-facing edge of a bank with thousands of physical locations.
• The address space is a mixture of legacy 151.151.96.0/20 and 159.37.0.0 blocks with newer 162.28.0.0 and 162.60.0.0 ranges — a long-lived enterprise that has accumulated allocations over decades rather than acquired them recently.

Notable

• Enterprise, and the shape is textbook. RIS sees 73 IPv4 prefixes / 24,576 addresses announced with only 6 observed BGP neighbours. The ratio is the tell: 73 prefixes is a lot of announcements, but they carve up a modest 24k of address space reached through six upstreams. A carrier with a customer cone would peer with hundreds of ASes; this network peers with the handful of transit providers a bank contracts with, and originates only its own space.
• Heavy deaggregation into /22s and /23s is how a geographically dispersed enterprise steers traffic between multiple data centres and egress points.

Interesting

• Financial institutions of this size deliberately split their public networking across several ASNs, which is why a single handle spans 10372 through 10376: it isolates failure domains and lets different business units or regions be routed independently.

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

Announced prefixes

• 151.151.96.0/19
• 159.37.106.0/24
• 159.37.108.0/24
• 159.37.110.0/23
• 159.37.112.0/20
• 159.37.128.0/21
• 159.45.255.0/24
• 162.28.128.0/22
• 162.28.136.0/21
• 162.28.236.0/22
• 162.60.8.0/21
• 162.60.32.0/20
• 162.60.48.0/22
• 162.111.136.0/24
• 169.200.44.0/22
• 169.200.48.0/21
• 169.200.56.0/23
• 169.200.60.0/23
• 169.200.82.0/23
• 169.200.84.0/23
• 171.72.209.0/24
• 171.72.211.0/24
• 171.72.212.0/24
• 171.72.221.0/24
• 171.72.222.0/24
• 171.72.224.0/24

Upstream networks

• AS32787 Akamai Technologies, Inc.
• AS13335 Cloudflare, Inc.
• AS6461 Zayo Bandwidth
• AS3356 Level 3 Parent, LLC
• AS701 Verizon Business
• AS7018 AT&T Enterprises, LLC

Adjacent networks

• AS32787 Akamai Technologies, Inc.
• AS13335 Cloudflare, Inc.
• AS6461 Zayo Bandwidth
• AS3356 Level 3 Parent, LLC
• AS701 Verizon Business
• AS7018 AT&T Enterprises, LLC