AS3939 NTT America, Inc.

NTTA-3936 - NTT America, Inc. · registered in the United States

IPv4 addresses321 prefixes · <0.001% of announced IPv4

Rank in United States#18,335largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#79,386of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS3939 in ASN lookup Look up an IP in this network (129.250.35.65) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

129.250.35.64/27

Other ASNs named NTT America, Inc.

10 other networks use the same organisation name; together with AS3939 they announce 4,855,970 IPv4 addresses.

ASNNameIPv4 addresses

AS2914NTT-DATA-2914 - NTT America, Inc. US4,832,292

AS3949NTTA-3946 - NTT America, Inc. US11,516

AS11158NETDEPON - NTT America, Inc. US7,680

AS1225NTTA-1225 - NTT America, Inc. US1,280

AS275NTTA-275 - NTT America, Inc. US1,090

AS3938NTTA-3936 - NTT America, Inc. US1,024

AS97NTTA-97 - NTT America, Inc. US512

AS7019NTTA-7019 - NTT America, Inc. US288

AS93NTTA-93 - NTT America, Inc. US256

AS262VERIO - NTT America, Inc. USIPv6 only

Similar-sized networks in United States

ASNNameIPv4 addresses

AS1909#18332 CAIDA - San Diego Supercomputer Center147

AS63256#18333 NYSBC - New York Structural Biology Center, Inc.128

AS33585#18334 NEWPORTBEACH-ASN01 - City of Newport Beach34

AS2543#18336 UCIMC-AS - University of California, Irvine4

AS13979#18337 ATT-IPFR - AT&T Enterprises, LLC4

AS46750#18338 STANFORD-INTERNET-ACCESS2 - Stanford University2

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