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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.7M | 3,136 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.7M | 20,900 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | 73.1M | 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 68.3M |
| 368 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 66.4M | 1,109 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 48M | 3,584 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,929 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.2M | 4,493 |
| AS-INTERMEDIA - Intermedia.net, Inc. |
| 43.3K |
| — |
| 44 |
| AS30567US | IGNITE-BROADBAND - Dickson Electric System | 43.3K | 65.5K | 17 |
| AS40285US | NORTHLAND-CABLE - NORTHLAND CABLE TELEVISION INC. | 43.3K | — | 138 |
| AS13886US | CLOUD-SOUTH - Cloud South | 43K | — | 118 |
| AS19531US | NODESDIRECT - Nodes Direct | 43K | 1M | 13 |
| AS46208US | PFNL-ASN - Peninsula Fiber Network, LLC | 43K | 163.8K | 51 |
| AS11668US | WCI-NET - WEST COAST INTERNET INCORPORATED | 43K | — | 60 |
| AS214483US | FIBERPOWER-AS FiberPower LLC | 42.8K | 256 | 106 |
| AS27501US | ISPNET-AS - isp.net | 42.8K | — | 36 |
| AS204957US | GREENFLOID-AS GREEN FLOID LLC | 42.8K | 983K | 163 |
| AS30536US | CCR-AS - Circle Computer Resources, Inc. | 42.8K | 2.3K | 86 |
| AS27446US | AS-ERCBB - ERC Broadband | 42.8K | 65.5K | 16 |
| AS4314US | NTSC-ASN2 - Vexus Fiber | 42.5K | — | 63 |
| AS27419US | BIGRIVER - Big River Telephone Company, LLC | 42.5K | — | 10 |
| AS25876US | LADWP-INTERNET - Los Angeles Department of Water & Power | 42.5K | — | 29 |
| AS399610US | AMS-HST - HEWLETT PACKARD ENTERPRISE COMPANY | 42.5K | — | 9 |
| AS25977US | HCCS - HOUSTON COMMUNITY COLLEGE SYSTEM | 42.5K | — | 44 |
| AS55039US | FATBEAM-AS - Fatbeam, LLC | 42.5K | 4.6K | 82 |
| AS394695US | PUBLIC-DOMAIN-REGISTRY - PDR | 42.5K | — | 39 |
| AS53264US | SBAEDGE-603 - SBA Edge, LLC | 42.5K | 65.5K | 61 |
| AS26727US | BBTEL - Brandenburg Telephone Company | 42.2K | 74.5K | 31 |
| AS399049US | JW-FLASHFIBER-01 - Joe Wheeler EMC | 42.2K | 69.6K | 47 |
| AS10821US | PIONEERINTERNET - The Pioneer Telephone Association, Inc. | 42.2K | — | 33 |
| AS17380US | PROJ-MUT-TEL - Project Mutual Telephone Cooperative Association, Inc. | 42K | — | 43 |
| AS1982US | ASN-NWNEXUS - Northwest Nexus Inc. | 42K | — | 7 |
| AS23308US | UTILITY-AS - UTILITY TELEPHONE, INC. | 42K | 65.5K | 17 |
| AS63018US | DEDICATED - Dedicated.com | 42K | 65.5K | 147 |
| AS5033US | AS5033 - Key Information Systems, Inc. | 42K | — | 11 |
| AS26292US | ASN-SHREWS - Shrewsbury Electric and Cable Operations | 42K | 65.5K | 21 |
| AS14955US | N-V-C - Northern Valley Communications LLC | 42K | — | 38 |
| AS40545US | EMPIRE-40545 - Empire Access | 41.7K | 65.5K | 13 |
| AS30325US | SSTC-NET-1 - South Slope Cooperative Telephone Company | 41.7K | 65.5K | 75 |
| AS397575US | ASCENSION-TECHNOLOGIES - Ascension Technologies | 41.5K | — | 5 |
| AS19115US | CHARTER-19115-DC - Charter Communications LLC | 41.5K | 577 | 59 |
| AS54032US | SEATTLEPACIFICUNIV - Seattle Pacific University | 41.5K | — | 11 |
| AS12213US | CNSQ-AS12213 - Centersquare | 41.5K | 3.8K | 51 |
| AS30517US | GREAT-LAKES-COMNET - Great Lakes Comnet, Inc. | 41.5K | 131.1K | 24 |
| AS395383US | DATAVERGE - Cologuard | 41.5K | 65.5K | 24 |
| AS10372US | WELLSFARGO-10372-10376 - Wells Fargo Bank, N.A. | 41.2K | — | 73 |
| AS12033US | ASN-AT-12033 - Adams TelSystems, Inc. | 41K | 65.5K | 8 |
| AS397976US | CA-1546-ASN-1 - Central Access, Inc. | 41K | — | 12 |
| AS32204US | KPUNET - KPU Telecommunications | 41K | — | 37 |
| AS7968US | LOYOLA-UNIV-CHICAGO - Loyola University Chicago | 41K | — | 8 |
| AS36105US | BBT-ISP - Big Bend Telephone Company, Inc. | 41K | — | 31 |
| AS6341US | WEC - WEC Business Services LLC | 41K | — | 6 |
| AS36556US | WAVE-RURAL-CONNECT-LLC - Wave Rural Connect, LLC | 41K | 4.1K | 9 |
| AS18811US | MENTOS-INTERNET-SERVICE - MENTOS COUPLE, INC. | 40.4K | — | 158 |