AS3938 NTT America, Inc.

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

IPv4 addresses1,0241 prefixes · <0.001% of announced IPv4

Rank in United States#7,970largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#35,704of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS3938 in ASN lookup Look up an IP in this network (204.141.124.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

204.141.124.0/22

IPv6 prefixes

All 1 prefix.

2001:418:1450::/48

Other ASNs named NTT America, Inc.

10 other networks use the same organisation name; together with AS3938 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

AS97NTTA-97 - NTT America, Inc. US512

AS7019NTTA-7019 - NTT America, Inc. US288

AS93NTTA-93 - NTT America, Inc. US256

AS3939NTTA-3936 - NTT America, Inc. US32

AS262VERIO - NTT America, Inc. USIPv6 only

Similar-sized networks in United States

ASNNameIPv4 addresses

AS664#7967 DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD)1,024

AS1734#7968 ROP-COCA-AS01 - Contra Costa County Regional Occupation Program / Richmond1,024

AS3629#7969 NYSERNET-BLK - NYSERNet1,024

AS4989#7971 NEXXEN-USEAST-02 - RhythmOne, LLC1,024

AS5957#7972 DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD)1,024

AS6336#7973 TURN-US-ASN - Turn Inc.1,024

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