Skip to content

Search by AS number, IP, prefix, domain or organisation

Exchanges Countries Reports

IPv4 prefixes

AS19321 UMC-HEALTH-SYSTEM

Unclassified ARIN

Overview Prefixes1 Peering Exchanges Security Graph

Shape and geography IPv4 prefixes 1 IPv6 prefixes 0

Inventory

IPv4 prefixes

1 announced · 1.02K addresses

Filter this page

Prefix	Addresses	Country	RPKI	IRR	Flags
199.21.252.0/22	1,024	US	—	—

asn.dev is an explorer for autonomous systems: address space, network context, observed peering topology, and a full dossier on any address.

v0.19.0 · built 2026-10-17T12:15:31Z

built by cmunroe.us