AS2 University of Delaware

UDEL-DCN - University of Delaware · registered in the United States

IPv4 addresses78,0804 prefixes · 0.002% of announced IPv4

Rank in United States#740largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#2,232of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS2 in ASN lookup Look up an IP in this network (91.143.144.1) All networks in United States

IPv4 prefixes

All 4 prefixes, in address order.

91.143.144.0/20
128.4.0.0/16
171.79.128.0/19
189.76.77.0/24

Other ASNs named University of Delaware

1 other network uses the same organisation name; together with AS2 they announce 143,872 IPv4 addresses.

ASNNameIPv4 addresses

AS34UDELNET - University of Delaware US65,792

Similar-sized networks in United States

ASNNameIPv4 addresses

AS11749#737 MPINET - MPInet78,336

AS10310#738 YAHOO-1 - Yahoo Holdings Inc.78,080

AS19255#739 YOUR-ORG-INC-NA - YOUR.ORG, INC.78,080

AS11911#741 THE-BANK-OF-NEW-YORK-MELLON-CORPORATION-AS11911 - The Bank of New York Mellon Corporation78,080

AS693#742 NOTRE-DAME-AS - University of Notre Dame77,824

AS22925#743 ALLIED-TELECOM - Allied Telecom Group, LLC77,312

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