AS13391 United Network for Organ Sharing

UNOS - United Network for Organ Sharing · registered in the United States

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in United States#10,673largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#49,816of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS13391 in ASN lookup Look up an IP in this network (207.239.123.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

207.239.123.0/24
207.239.150.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS12259#10670 EBOCOM - EBOCOM LLC512

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AS13394#10674 SCHUYLKILL-INTERMEDIATE-UNIT-29 - SCHUYLKILL INTERMEDIATE UNIT 29512

AS13447#10675 QYRUS-INC - QYRUS INC.512

AS13452#10676 AS-IL1-DIA - Guggenheim Services 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