AS18933 T-Mobile USA, Inc.

USCC-MPLS01 - T-Mobile USA, Inc. · registered in the United States

IPv4 addresses27,64811 prefixes · <0.001% of announced IPv4

Rank in United States#1,855largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#5,210of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS18933 in ASN lookup Look up an IP in this network (165.27.240.1) All networks in United States

IPv4 prefixes

All 11 prefixes, in address order.

165.27.240.0/22
165.27.248.0/24
165.27.253.0/24
166.181.160.0/20
166.182.160.0/20
166.224.192.0/18
198.227.57.0/24
198.227.60.0/23
198.227.189.0/24
198.227.238.0/24
198.227.249.0/24

Other ASNs named T-Mobile USA, Inc.

4 other networks use the same organisation name; together with AS18933 they announce 13,480,448 IPv4 addresses.

ASNNameIPv4 addresses

AS21928T-MOBILE-AS21928 - T-Mobile USA, Inc. US13,121,792

AS6614USCC-ASN - T-Mobile USA, Inc. US307,968

AS17133T-FIBER - T-Mobile USA, Inc. US22,016

AS22140T-MOBILE-AS22140 - T-Mobile USA, Inc. US1,024

Similar-sized networks in United States

ASNNameIPv4 addresses

AS32391#1852 SRCACCESS - SANTA ROSA TELEPHONE COOPERATIVE INC27,648

AS11191#1853 CALNET - Cal.net, Inc.27,648

AS13446#1854 AS-NETZERO - Netzero,INC.27,648

AS396287#1856 NEXTPOWEREDBYNAECLLC - Next, Powered by NAEC, LLC27,648

AS16604#1857 FWB-NE - HUNTEL.NET27,392

AS3738#1858 SSB-ASN-3738 - State Street Bank and Trust Company27,392

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