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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 |
| 2.6K |
| 65.5K |
| 3 |
| AS40026US | DCSG-NUM1 - DICK'S SPORTING GOODS INC | 2.6K | — | 10 |
| AS395395US | INDIANATECH - Indiana Tech | 2.6K | — | 2 |
| AS53421US | TROYOHIO-TROYSCHOOLS - Troy City School District | 2.6K | — | 2 |
| AS63103US | OCF-AS - Ochsner Clinic Foundation | 2.6K | — | 8 |
| AS54886US | ROCKETAS - ROCKET SOFTWARE INC | 2.6K | — | 4 |
| AS26396US | MIDWAYNET-ASN - MidwayNet, LLC. | 2.6K | — | 3 |
| AS11504US | QUMULUSAI - The Cloud Minders, Inc. | 2.6K | — | 10 |
| AS10718US | CNO-FINANCIAL-GROUP - CNO Financial Group, Inc. | 2.6K | — | 10 |
| AS7243US | HDS-AS - HITACHI DATA SYSTEMS | 2.6K | — | 9 |
| AS27483US | DDS - The Darby Group Co. | 2.6K | — | 10 |
| AS51447US | ROOTLAYERNET RootLayer Web Services LLC | 2.6K | — | 10 |
| AS396440US | AS-AUBURN-UNIVERSITY-MONTGOMERY - Auburn University at Montgomery | 2.6K | — | 2 |
| AS30335US | AS-WWU - Walla Walla University | 2.6K | — | 2 |
| AS397497US | PAYCOM - Paycom Payroll, LLC | 2.6K | 3 | 13 |
| AS40476US | SCALAHOSTING - Scala Hosting LLC | 2.6K | — | 10 |
| AS27376US | MNAO-ASN1 - Mazda Motor of America, Inc. d/b/a Mazda North American Operations | 2.6K | — | 2 |
| AS11486US | COLO-PREM-VZB - Verizon Business | 2.6K | — | 3 |
| AS32699US | FIRST-427 - Firstrade Securities Inc. | 2.6K | — | 3 |
| AS33292US | BROADVOICE-BOS - SYNDEO LLC | 2.6K | — | 3 |
| AS17030US | DULUTH - PRIMERICA LIFE INSURANCE COMPANY | 2.6K | — | 3 |
| AS25816US | TOURO - Touro College | 2.6K | — | 10 |
| AS396461US | NATEL-ASN1 - Liberty Communications | 2.6K | — | 10 |
| AS395455US | MIDWEST-RADIOLOGY - St. Paul Radiology | 2.6K | — | 2 |
| AS32059US | TRADESTATION-1 - TradeStation Securities, Inc | 2.6K | — | 10 |
| AS17336US | GENDYN - General Dynamics | 2.6K | — | 7 |
| AS22984US | ECC-65 - Lightspeed Communications | 2.6K | — | 9 |
| AS401561US | PROXEL - Proxel Innovations LLC | 2.6K | 8.2K | 12 |
| AS12171US | FASTENTERPRISES - Fast Enterprises, LLC | 2.6K | — | 10 |
| AS62564US | LINVEO-LLC - LINVEO, LLC | 2.6K | 4 | 14 |
| AS393591US | GAMEWOODTECHNOLOGYGROUP - Gamewood Technology Group, Inc. | 2.6K | — | 7 |
| AS25878US | QNST-DC01 - Quinstreet, Inc. | 2.6K | — | 7 |
| AS400811US | HEART-THROB-1941 - Fuse Rural Connect, LLC | 2.6K | — | 2 |
| AS12105US | GCN-001 - Global Enterprise Solutions, Inc. | 2.6K | — | 2 |
| AS3769US | HEARST-AS - Hearst Magazines, Inc. | 2.6K | — | 9 |
| AS19435US | DNET-ISP - Dnet Internet Services | 2.6K | — | 10 |
| AS32875US | VIRPUS - Wowrack.com | 2.6K | 69.6K | 12 |
| AS46347US | CAROLINAWEST-WIRELESS - Carolina West Wireless | 2.6K | — | 8 |
| AS36516US | F5-XC-FE - F5, Inc. | 2.6K | — | 3 |
| AS46883US | BCCTV - Bay Country Communications, Inc. | 2.6K | — | 4 |
| AS54960US | LAREDOCONNECTIONS - Laredo Connections Inc | 2.6K | — | 3 |
| AS40050US | BRNL - Blue Rim Networks, LLC | 2.6K | 32.8K | 10 |
| AS33530US | KIRKLAND-ELLIS-AR - Kirkland & Ellis LLP | 2.6K | — | 10 |
| AS394094US | INTELLECTICA-US - Intellectica Systems Inc. | 2.6K | 65.5K | 11 |
| AS25679US | TDC-DATA3 - Tulsa Datacenter, LLC | 2.6K | — | 9 |
| AS16952US | LIGHTSPEED - Lightspeed Datalinks | 2.6K | — | 10 |
| AS22728US | THINKSIS - Software Information Systems, LLC | 2.6K | — | 2 |