AS15303 First Trust Portfolios L.P.

NIKE-SECURITIES - First Trust Portfolios L.P. · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#14,084largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#63,663of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS15303 in ASN lookup Look up an IP in this network (198.199.191.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

198.199.191.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS15299#14081 CFS-AS01 - CarsForSale.com256

AS15300#14082 4IMPRINT - 4imprint256

AS15302#14083 TRIALCARD-01 - TrialCard Incorporated256

AS15306#14085 WALSWORTH-FULTON - WALSWORTH PUBLISHING COMPANY256

AS15312#14086 PWGL - Prime Wholesale Goods LLC256

AS15314#14087 JENZABAR-ASN1 - jenzabar inc256

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