AS11643 — EBAY

Network type: hosting

AS11643 announces 7 IPv4 prefixes covering 26,624 addresses and 0 IPv6 prefixes.

About this network

EBAY is one of the autonomous systems of eBay, Inc., the online marketplace. RIS sees 15 IPv4 prefixes and roughly 27,600 addresses, no IPv6 on this AS, and — strikingly — only 1 observed BGP neighbour.

What it's used for

Corporate and back-office infrastructure for eBay. Every prefix the pack could resolve registers to eBay, Inc. itself, under a run of in-house netblock handles: EBAY, EBAY-1, EBAY-2, EBAY-QA-IT-1. That is a self-held inventory — no third-party registrants, no scattered space from other RIRs, nothing that resembles a leased or brokered block. The prefix list shows the ordinary structure of a large enterprise: a /19, several /20s and a /21 as the aggregates, plus a handful of /24 deaggregates carved out of 209.140.128.0/20 for finer inbound steering.

The single observed neighbour is the fact worth pausing on. A network of 27,000 addresses belonging to one of the largest e-commerce sites in the world ought to be densely peered if it were serving buyers directly. It is not. The user-facing marketplace is delivered through content-delivery networks and separate serving infrastructure, so what remains behind this legacy AS is the enterprise: offices, corporate systems, internal and QA environments, and vendor connectivity — announced through effectively one upstream path.

Notable

The EBAY-QA-IT-1 handle names an internal function (QA/IT), a good example of how ARIN netblock names are frequently internal department codes rather than anything meaningful about the traffic. Read the org line, not the netname.

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

Announced prefixes

• 64.4.252.0/22
• 66.135.192.0/19
• 66.211.160.0/21
• 66.211.176.0/20
• 209.140.128.0/19
• 216.113.176.0/21
• 216.113.184.0/22

Upstream networks

• AS62955 eBay, Inc

Adjacent networks

• AS62955 eBay, Inc