AS6307 — AMERICAN-EXPRESS
AS6307 announces 42 IPv4 prefixes covering 34,560 addresses and 0 IPv6 prefixes.
About this network
The corporate network of American Express Company, the US payments and financial services firm, registered under the handle AMERICAN-EXPRESS from Phoenix, Arizona.
What it's used for
- Enterprise connectivity for a global card issuer and payments network: corporate offices, data centres, and the systems behind card authorisation, merchant services and customer-facing sites.
- Roughly thirty-five thousand IPv4 addresses, sized for a large multinational's own estate rather than for resale.
Notable
- A financial-institution network. The address space serves one company's staff, applications and payment infrastructure; none of it is sold to subscribers.
- ARIN records the assignment in early 1996, placing American Express among the earlier large US enterprises to operate an autonomous system of its own.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 12.10.219.0/24
- 12.29.100.0/23
- 12.29.102.0/24
- 12.105.185.0/24
- 139.71.0.0/21
- 139.71.8.0/22
- 139.71.16.0/21
- 139.71.24.0/22
- 139.71.28.0/23
- 139.71.48.0/21
- 139.71.64.0/21
- 139.71.72.0/22
- 139.71.76.0/23
- 139.71.78.0/24
- 139.71.80.0/20
- 139.71.100.0/23
- 139.71.105.0/24
- 139.71.106.0/23
- 139.71.108.0/22
- 139.71.112.0/20
- 139.71.136.0/24
- 139.71.144.0/23
- 139.71.147.0/24
- 139.71.152.0/24
- 139.71.155.0/24
- 139.71.176.0/24
- 139.71.178.0/23
- 139.71.180.0/22
- 139.71.184.0/23
- 139.71.186.0/24
- 139.71.192.0/22
- 139.71.196.0/23
- 139.71.233.0/24
- 148.173.86.0/24
- 148.173.88.0/22
- 148.173.96.0/22
- 148.173.100.0/23
- 148.173.103.0/24
- 148.173.104.0/24
- 148.173.106.0/23
- 148.173.144.0/24
- 193.32.34.0/24
Upstream networks
- AS13335 Cloudflare, Inc.
- AS3356 Level 3 Parent, LLC
- AS3257 GTT Communications Inc.
- AS7018 AT&T Enterprises, LLC
- AS701 Verizon Business
Adjacent networks
- AS13335 Cloudflare, Inc.
- AS3356 Level 3 Parent, LLC
- AS3257 GTT Communications Inc.
- AS7018 AT&T Enterprises, LLC
- AS701 Verizon Business
Internet exchanges
- Equinix Internet Exchange Ashburn — Ashburn, United States
- Equinix Internet Exchange Dallas — Dallas, United States
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IPv4 Prefixes
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⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED