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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) | 227.5M | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,285 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,310 |
| 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.
32,244 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,356 |
| MERITUSHEALTH - Meritus Medical Center, Inc. |
| 1K |
| — |
| 3 |
| AS32751US | NUCLEARFALLOUT-SEA - Nuclearfallout Enterprises, Inc. | 1K | 4.1K | 5 |
| AS1996US | ASN1 - Fairdinkum Consulting, LLC | 1K | — | 4 |
| AS53658US | SOCKETLABS - SocketLabs | 1K | — | 1 |
| AS36175US | MYFAM-DC1 - Myfamily.com, Inc. | 1K | — | 1 |
| AS10490US | SOUTHERN-CROSSROADS-SOX - Georgia Institute of Technology | 1K | 65.5K | 2 |
| AS11374US | WORKSMART-NETWORK-BACKBONE - Panterra Networks, Inc. | 1K | 3 | 7 |
| AS200655US | GROUPM-FR-AS WPP Group USA, Inc. | 1K | — | 3 |
| AS396177US | JUMPFIBER - Jump Fiber | 1K | — | 1 |
| AS36809US | COCG---CITY-OF-CORAL-GABLES - City of Coral Gables | 1K | — | 1 |
| AS401244US | MEDINA-COUNTY-01 - Medina County | 1K | 256 | 3 |
| AS27562US | RHC-INT - Presence Health Network | 1K | — | 4 |
| AS399773US | CASTLE-COOKE - Castle & Cooke | 1K | — | 4 |
| AS23075US | CLIK - Clik Broadband, LLC | 1K | — | 1 |
| AS12092US | SONIFI - Sonifi Solutions, Inc. | 1K | — | 4 |
| AS395581US | SIMSMM-US-INET - Metal Management, Inc. | 1K | — | 1 |
| AS402075US | PEEKABO - Peekabo Networks | 1K | — | 4 |
| AS23176US | BASICRESEARCH - Basic Research, LLC | 1K | — | 1 |
| AS18490US | VTLA - NTT Global Networks Incorporated | 1K | — | 4 |
| AS394393US | UKIAHWIRELESS - Wi-Fiber, Inc. | 1K | — | 1 |
| AS23766US | EA-SG-AP - Electronic Arts, Singapore | 1K | — | 1 |
| AS399660US | JANPA-ISP - WWLTH, Inc | 1K | — | 1 |
| AS32802US | BROCKTONHOSPITAL-ORG - Brockton Hospital | 1K | — | 4 |
| AS402816US | BACKROAD - BackRoad | 1K | — | 1 |
| AS4297US | CENTURYLINK-MTIPS4-HLR - CenturyLink Communications, LLC | 1K | — | 4 |
| AS46459US | ADSALARM - Alarm Detection Systems, Inc | 1K | — | 3 |
| AS46670US | MARKETING-ASSOCIATES-LLC - MARKETING ASSOCIATES, LLC | 1K | — | 4 |
| AS398383US | WMBB-WMF-7000 - Point Broadband Fiber Holding, LLC | 1K | — | 1 |
| AS62134US | IHNET-EU IHNetworks, LLC | 1K | — | 1 |
| AS53676US | EMERALD - Emerald Publications | 1K | — | 2 |
| AS275US | NTTA-275 - NTT America, Inc. | 1K | 1 | 2 |
| AS62914US | MFI-ASN - Mattress Firm, Inc. | 1K | — | 4 |
| AS396239US | CMW-WIRELESS-1 - CMW Wireless LLC | 1K | — | 1 |
| AS397189US | WHISKEYCITY - Lawrenceburg Municipal Utilities | 1K | — | 1 |
| AS23462US | SAUNSTAR-PARKPLAZA - SaunStar Operating Company, LLC | 1K | — | 1 |
| AS402304US | CALCAS-PID - California Casualty Management Company | 1K | — | 1 |
| AS400896US | HUSD-AS1 - HIGLEY UNIFIED SCHOOL DISTRICT #60 | 1K | — | 3 |
| AS46917US | PRAGMA-FS-01 - Pragma Financial Systems | 1K | — | 4 |
| AS33397US | GENSOCIETYUTAH - Genealogical Society of Utah | 1K | 65.8K | 3 |
| AS39992US | FDC-CTS-HOLDINGS - Fiserv Solutions, LLC | 1K | — | 2 |
| AS32138US | NETTEK01 - Nettek LLC | 1K | — | 1 |
| AS395120US | DCE1 - Ashley Furniture Industries, Inc. | 1K | — | 2 |
| AS394542US | MS-FIBER - MS Fiber, LLC | 1K | 256 | 2 |
| AS63016US | RENOWN-HEALTH-RENO-NV - Renown Health | 1K | 1 | 2 |
| AS36116US | KAYAK-US - Kayak Software | 1K | — | 3 |
| AS16520US | SCFEDERAL - South Carolina Federal Credit Union | 1K | — | 2 |
| AS62861US | RAYCOM-MEDIA-RSA - Gray Media, Inc. | 1K | — | 4 |