AS15251 Grand Central Station Internet Services, Inc.

GRAND-CENTRAL-STATION - Grand Central Station Internet Services, Inc. · registered in the United States

IPv4 addresses7683 prefixes · <0.001% of announced IPv4

Rank in United States#9,381largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#43,832of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS15251 in ASN lookup Look up an IP in this network (12.49.56.1) All networks in United States

IPv4 prefixes

All 3 prefixes, in address order.

12.49.56.0/24
63.166.183.0/24
65.166.22.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS15185#9378 HIBBERT-EAST - The Hibbert Group768

AS15197#9379 CONCORD - Concord Technologies768

AS15229#9380 EDFTNA - EDF Trading North America, LLC768

AS15258#9382 GBCO - Gilbane Building Company768

AS15260#9383 DWS-NY - Disney Worldwide Services, Inc.768

AS15263#9384 GALLUP1 - Gallup768

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