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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| 131.1K |
| 256 |
| 4 |
| AS16US | LBL - Lawrence Berkeley National Laboratory | 131.1K | 1 | 3 |
| AS3794US | TAMU - Texas A&M University | 131.1K | 65.5K | 3 |
| AS19530US | NDIN-STATE - State of North Dakota, ITD | 131.1K | 65.5K | 3 |
| AS10955US | WILPATERSON - WILLIAM PATERSON UNIVERSITY | 131.1K | — | 5 |
| AS32480US | LLUMC - Loma Linda University Medical Center | 131.1K | — | 8 |
| AS343US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 131.1K | 256 | 3 |
| AS25656US | OLEMISSS - University of Mississippi | 131.1K | 1 | 4 |
| AS19464US | WASHINGTON-AND-LEE - Washington & Lee University | 131.1K | — | 3 |
| AS3452US | UAB-AS - University of Alabama at Birmingham | 131.1K | — | 3 |
| AS16519US | CUDENVER - University of Colorado Denver | 131.1K | 256 | 3 |
| AS39855US | MOD-EU Mod Mission Critical LLC | 130.8K | 5 | 492 |
| AS14537US | CL-1379-14537 - Continent 8 LLC | 130.3K | 196.6K | 197 |
| AS22594US | UNI-NET-ASN - University of Northern Iowa | 130.3K | — | 9 |
| AS399077US | TERAEXCH - Tcloudnet | 130K | 527 | 523 |
| AS21565US | AS21565 - Horry Telephone Cooperative, Inc. | 129.8K | 65.8K | 484 |
| AS53488US | MORRISBB - Optimum Online | 129.8K | — | 83 |
| AS11798US | ACEDATACENTERS-AS-1 - Ace Data Centers, Inc. | 129.5K | — | 450 |
| AS396190US | LEASEWEB-USA-SEA - Leaseweb USA, Inc. | 129.5K | 5.3M | 100 |
| AS63911US | NETACTUATE-AS-AP - NetActuate, Inc | 128.8K | 103 | 265 |
| AS16399US | FIRSTCOMM-AS2 - First Communications LLC | 128.8K | 28.7K | 28 |
| AS10835US | VISIONARY - Visionary Communications LLC | 128K | 16.9M | 38 |
| AS36183US | AKAMAI-AS - Akamai Technologies, Inc. | 126.7K | 1.6K | 2,122 |
| AS23314US | ORLANDOTELCO - Summit Broadband | 126.2K | 65.5K | 124 |
| AS13415US | FIRSTDIGITAL - FirstDigital Communications, LLC | 126.2K | 1.2M | 47 |
| AS395624US | GACORP - General Atomics | 126K | — | 10 |
| AS906US | DMIT - DMIT Cloud Services | 125.4K | 11 | 251 |
| AS19661US | SUSQ-BALA - Susquehanna International Group, LLP | 125.2K | 1 | 14 |
| AS1493US | DNIC-ASBLK-01492-01493 - Headquarters, USAISC | 124.7K | — | 32 |
| AS46844US | SHARKTECH - Sharktech | 124.7K | 147.7K | 422 |
| AS10343US | AS10343 - National Aeronautics and Space Administration | 124.2K | 1 | 7 |
| AS10837US | WELLSFARGO-10837 - Wells Fargo Bank, N.A. | 124.2K | 32 | 86 |
| AS11696US | NBS11696 - Fusion, LLC | 123.6K | 65.7K | 204 |
| AS213541US | ws-telecom-sdn WS Telecom Inc | 123.6K | — | 229 |
| AS16904US | ARVIG-16904 - Arvig Enterprises Inc. | 123.6K | 1.1M | 35 |
| AS12041US | AS-AFILIAS1 - Afilias, Inc. | 123.4K | 225 | 452 |
| AS46562US | PERFORMIVE - Performive LLC | 123.1K | 24 | 274 |
| AS13576US | SDNW-13576 - SDN Communications | 123.1K | 73.7K | 76 |
| AS15164US | UPNLLC - Unite Private Networks LLC. | 122.9K | 71.9K | 175 |
| AS16481US | BABSON-GNET - Babson College | 122.9K | — | 77 |
| AS21704US | ASN-21704 - New York City Board of Education | 122.6K | — | 24 |
| AS1448US | UNITED-BROADBAND - United Cooperative Services | 121.9K | 65.5K | 13 |
| AS26577US | BAESYSTEMS - BAE Systems Inc. | 121.3K | — | 17 |
| AS15227US | LUMOS - LUMOS Networks, Inc. | 120.6K | — | 14 |
| AS4196US | WELLSFARGO-4196 - Wells Fargo Bank, N.A. | 120.3K | 48 | 88 |
| AS209372US | WSTelecom_Customers WS Telecom Inc | 120.1K | 3.6M | 271 |
| AS6569US | NATIONWIDEASN - Nationwide Mutual Insurance Company | 119.3K | — | 15 |