AS18537 PPDI

PPD-AUSTIN - PPDI · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#14,216largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#63,924of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS18537 in ASN lookup Look up an IP in this network (198.178.190.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

198.178.190.0/24

Other ASNs named PPDI

2 other networks use the same organisation name; together with AS18537 they announce 768 IPv4 addresses.

ASNNameIPv4 addresses

AS40017PPD-RESEARCH-TRIANGLE-PARK-NC - PPDI US256

AS54684PPD-WILMINGTON - PPDI US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS18517#14213 LIMRA-LOMA-LG18 - LL Global Inc256

AS18521#14214 AMERICAN-CAMPUS-COMMUNITIES - American Campus Communities, Inc256

AS18524#14215 SAM-MEMPHIS - SOUTHEASTERN ASSET MANAGEMENT, INC.256

AS18543#14217 ION-NEWYORKCITY-NYC - ION MEDIA NETWORKS256

AS18544#14218 NKTR-AS01 - Nektar Therapeutics256

AS18571#14219 WESTERNRESERVEGROUP - The Western Reserve Mutual Casualty Company256

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