AS40373 University Medical Center, Inc

UMC-NET - University Medical Center, Inc · registered in the United States

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in United States#11,559largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#51,404of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS40373 in ASN lookup Look up an IP in this network (216.249.130.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

216.249.130.0/23

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ASNNameIPv4 addresses

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AS40427#11561 IRONPORT-SYSTEMS-CI365 - Cisco Systems Ironport Division512

AS40442#11562 ARCUSTECH - Arcustech, LLC512

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources