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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 | 23,661 |
| 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 |
| 236 |
| 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 | 4,490 |
| SOUNDBITE - Soundbite Communications, Inc. |
| 1.8K |
| — |
| 4 |
| AS18570US | ECHOSTAR-BROADCASTING-CORPORATION - EchoStar Broadcasting Corperation | 1.8K | 1 | 8 |
| AS27549US | CAW-ASN-01 - Cloud at Work | 1.8K | — | 6 |
| AS394205US | 5THCOLUMN - 5THCOLUMN LLC | 1.8K | — | 4 |
| AS30321US | BURNINGMAN - Burning Man | 1.8K | — | 7 |
| AS26239US | ATLASAIR - Atlas Air, Inc. | 1.8K | — | 4 |
| AS393458US | NUCLEARFALLOUT-ATL - Nuclearfallout Enterprises, Inc. | 1.8K | 4.1K | 8 |
| AS22744US | WRIGHT-EXPRESS - Wex Inc. | 1.8K | — | 5 |
| AS396432US | JH-US-01 - JAMES HARDIE BUILDING PRODUCTS, Inc. | 1.8K | — | 7 |
| AS32861US | MACQUARIE-GLOBAL-SERVICES-USA-LLC - Macquarie Global Services (USA) LLC | 1.8K | — | 6 |
| AS62952US | EVACOMM - Velocity Networks, Inc. | 1.8K | — | 4 |
| AS14378US | XVL - Xenon Ventures, LLC | 1.8K | — | 7 |
| AS398230US | RTEBB-NET1 - Roggen Enterprises BroadBand, LLC | 1.8K | 4.1K | 4 |
| AS396417US | SFDC-IT - Salesforce, Inc. | 1.8K | 1 | 5 |
| AS401586US | SQUIRREL - Squirrel Networks LLC | 1.8K | — | 4 |
| AS396480US | MEADOWRIDGE-NETWORKS - Meadowridge Networks, Inc. | 1.8K | 8.2K | 6 |
| AS40810US | EY-AS-SG - Ernst & Young LLP | 1.8K | — | 5 |
| AS32337US | NOWCOM-BGP - Nowcom Corporation | 1.8K | — | 6 |
| AS53943US | PAYLOCITY - Paylocity Corporation | 1.8K | — | 7 |
| AS393827US | BJWC - BJS WHOLESALE CLUB | 1.8K | — | 6 |
| AS40399US | MASERGY-CLOUD-COMMUNICATIONS - Masergy Cloud Communications, Inc. | 1.8K | — | 7 |
| AS53550US | AS53550 - NTT Cloud Communications US, Inc. | 1.8K | 65.5K | 5 |
| AS32164US | SECURED-SERVERS - SECURED SERVERS LLC | 1.8K | — | 3 |
| AS394765US | VERINT - Verint Americas Inc | 1.8K | — | 7 |
| AS14211US | GOTHAM-WEB-SERVICES - Gotham Web Services, Inc. | 1.8K | — | 6 |
| AS23149US | BBW - BATH & BODY WORKS, INC. | 1.8K | — | 4 |
| AS394229US | TELOGIKS - Juxto, Inc. | 1.8K | 1 | 8 |
| AS13458US | DKP-ASN - DAVIDSON KEMPNER CAPITAL MANAGEMENT LP | 1.8K | — | 7 |
| AS33328US | NORTON-HEALTHCARE - Norton Healthcare | 1.8K | — | 7 |
| AS46943US | GLBIX-STLSMO-WPDC - Global Internet eXchange | 1.8K | — | 6 |
| AS397650US | CALIX-CENTRAL - Calix, Inc. | 1.8K | 47 | 12 |
| AS3743US | ARCEL-2 - Cleveland Cliffs Steel LLC | 1.8K | — | 7 |
| AS27326US | VHSA-AS - VCU HEALTH SYSTEM AUTHORITY | 1.8K | — | 7 |
| AS19734US | NTS-NACOGDOCHES-01 - Vexus Fiber | 1.8K | — | 3 |
| AS11323US | GETTYIMAGES - Getty Images (Seattle), Inc. | 1.8K | — | 7 |
| AS40113US | SLHS-AS - ST. LUKE'S HEALTH SYSTEM, LTD. | 1.8K | — | 7 |
| AS20368US | SMART-CITY-INCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 1.8K | — | 3 |
| AS706US | TEST-AUSTIN-IBM-AS - Advanced Workstations Division, IBM Corporation | 1.8K | — | 7 |
| AS62598US | REI-TEL - Re-invent Telecom, LLC | 1.8K | — | 7 |
| AS30202US | LEVEL-IV - Level IV | 1.8K | — | 7 |
| AS22104US | GELB - Gelber Group, LLC | 1.8K | — | 4 |
| AS209697US | PARKERBROADBAND Parker Broadband LLC | 1.8K | — | 6 |
| AS205940US | PlusCreativo Plus Creativo LLC | 1.8K | — | 4 |
| AS401170US | HBG-IP - HBG Inc. | 1.8K | 256 | 5 |
| AS36321US | CSTL - Castle Global Inc. | 1.8K | 1 | 6 |
| AS40391US | CHSINC - CHS COOPERATIVES FOUNDATION | 1.8K | — | 7 |
| AS397966US | READYDEDISLLC - ReadyDedis, LLC | 1.8K | — | 7 |