AS19524 — COMERICA-INC

AS19524 announces 7 IPv4 prefixes covering 4,864 addresses and 0 IPv6 prefixes.

About this network

The AS handle COMERICA-INC is held by Fifth Third Bank, National Association.

What it's used for

• The address space carries corporate banking infrastructure, evidenced by netnames such as FIFTHTHIRDBANKD and ATT associated with registrants Fifth Third Bank and AT&T Enterprises.
• The AS announces 11,264 IPv4 addresses across 16 prefixes with only 2 observed neighbours, indicating a small, self-contained corporate estate rather than a transit or access network.

Notable

• Registrants for the majority of prefixes are Fifth Third Bank, National Association, while one prefix (12.15.6.0/23) is registered to AT&T Enterprises, LLC, suggesting leased or legacy space.
• Fifth Third Bancorp completed its merger with Comerica Inc., absorbing the latter's operations and rebranding its branches under the Fifth Third name.
• The inventory consists of 16 IPv4 prefixes with no IPv6 announcements, reflecting a legacy IPv4-only corporate network.

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

Announced prefixes

• 170.228.180.0/22
• 170.228.184.0/22
• 170.228.188.0/24
• 170.228.204.0/24
• 170.228.212.0/22
• 170.228.216.0/22
• 170.228.220.0/24

Upstream networks

• AS19905 Vercara, LLC
• AS7018 AT&T Enterprises, LLC

Adjacent networks

• AS19905 Vercara, LLC
• AS7018 AT&T Enterprises, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 44 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 0 route objects.
• Listed in as-sets: AS-CTBC-CUSTOMERS64, AS1221:AS-CUSTOMERS.