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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 |
| SecureLink WYOCORE TECHNOLOGIES LLC |
| 32.8K |
| — |
| 47 |
| AS397342US | PAUSD-EXT - Palo Alto Unified School District | 32.8K | — | 2 |
| AS14550US | MIDDLEBURY-COLLEGE - Middlebury College | 32.8K | — | 1 |
| AS39999US | POLK-COUNTY-PUBLIC-SCHOOLS - Polk County Public Schools | 32.8K | — | 1 |
| AS213US | DNIC-AS-00213 - Headquarters, USAISC | 32.8K | 1 | 2 |
| AS22978US | GSU - Governors State University | 32.8K | — | 1 |
| AS393257US | LAWREN-1 - Lawrence University | 32.8K | — | 1 |
| AS19045US | DIRECTCOM - Direct Communications Cedar Valley, LLC | 32.8K | 65.5K | 28 |
| AS63014US | MPEA-MCCORMICK-PLACE - McCormick Place | 32.8K | — | 1 |
| AS19869US | AECNET - Ovintiv | 32.8K | — | 2 |
| AS23065US | SBCEO - Santa Barbara County Education Office | 32.8K | — | 1 |
| AS30237US | CHANEYSYS - Chaney Systems, Inc. | 32.8K | — | 1 |
| AS46309US | TONAQUINT-DC - ValorC3 Data Centers | 32.5K | 65.5K | 11 |
| AS1585US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 32.5K | — | 9 |
| AS22489US | DATABANK-CASTLEACCESS - Castle Access Inc | 32.5K | 65.5K | 37 |
| AS21777US | MASSIVE-NETWORKS-21777 - Massive Networks, Inc. | 32.3K | 67.1K | 70 |
| AS22667US | VISTA - Vista Broadband Networks, Inc. | 32K | 65.5K | 18 |
| AS53259US | JO-CARROLL-ENERGY - Jo-Carroll Energy, Inc. (NFP) | 31.7K | 65.5K | 26 |
| AS400268US | SWIFTCURRENT-CONNECT - Pierce Pepin Cooperative Services | 31.7K | 65.5K | 26 |
| AS26271US | CMSINTERNET - CMSInter.net LLC | 31.7K | 20.5K | 15 |
| AS394161US | TESLA - Tesla Motors, Inc. | 31.5K | 13 | 102 |
| AS10674US | GRUCOM - Gainesville Regional Utilities | 31.5K | 65.5K | 9 |
| AS27288US | DPCHICO-1 - Digital Path | 31.5K | 65.5K | 11 |
| AS53271US | PHENIXCITYCABLE - Phenix Cable | 31.5K | — | 10 |
| AS6428US | CDM - CDM | 31.5K | 65.5K | 95 |
| AS11138US | BEK-COMMUNICATIONS-INTERNET-ROUTER - BEK Communications Cooperative | 31.5K | — | 57 |
| AS22221US | NGIC-COMM - National General Management Corp. | 31.5K | — | 34 |
| AS17293US | VTXC - VTX Communications LLC | 31.2K | 65.5K | 37 |
| AS2044US | DF-PTL1 - Digital Fortress | 31.2K | 65.5K | 13 |
| AS16417US | IRONPORT-SYSTEMS-INC - Cisco Systems Ironport Division | 31.2K | 11 | 118 |
| AS11712US | BELLSOUTH - AT&T Services, Inc. | 31K | — | 6 |
| AS393775US | IPP-AS - IP Pathways, LLC | 31K | 8.2K | 50 |
| AS395035US | LIVEOAK-FIBER - LiveOak Fiber | 31K | 74.1K | 74 |
| AS11155US | DELIGHTSPEED-01 - DE LightSpeed | 31K | — | 33 |
| AS25773US | RADWARE-CLOUD-SERVICES - RADWARE INC. | 31K | 20 | 141 |
| AS32601US | ACUNET-2 - Abilene Christian University | 31K | — | 9 |
| AS12008US | VERCARA - Vercara, LLC | 30.8K | 76 | 186 |
| AS33561US | LUNAVI-WY - Lunavi, Inc. | 30.7K | 4.1K | 32 |
| AS27229US | WEBHOST-ASN1 - Webhosting.Net, Inc. | 30.7K | — | 25 |
| AS18616US | NATURALWIRELESS - Natural Wireless, LLC | 30.7K | 65.5K | 14 |
| AS46632US | SOUTHWEST-ARKANSAS-TELEPHONE-COOPERATIVE - Southwest Arkansas Telephone Cooperative | 30.7K | — | 28 |
| AS13348US | CIGNA-2 - CIGNA | 30.7K | — | 24 |
| AS19237US | OMNIS - Omnis Network, LLC | 30.7K | — | 16 |
| AS17071US | UBSW-STAMFORD - UBS AG | 30.7K | — | 85 |
| AS14743US | INTERNAP-BLOCK-4 - Unitas Global | 30.7K | 65.5K | 17 |
| AS23138US | FIRST-STEP - FIRST STEP INTERNET, LLC | 30.5K | 131.1K | 36 |
| AS202623US | CLOUDFLARENET-CORE Cloudflare Inc | 30.5K | 20 | 31 |