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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 |
| 15.9K |
| 65.5K |
| 34 |
| AS23131US | STARLAN - STARLAN TELECOM CORP. | 15.9K | — | 8 |
| AS26809US | SCOTTEPB - Scottsboro Electric Power Board | 15.9K | 65.5K | 23 |
| AS7799US | OLYPENASN - Olypen, Inc. | 15.9K | — | 11 |
| AS40264US | TWC-40264-WI-MN-UPPERMI-C3 - Charter Communications LLC | 15.9K | 514 | 22 |
| AS19693US | CENTRILOGIC-ASN - Centrilogic, Inc. | 15.9K | 65.5K | 26 |
| AS399122US | AS-VPSHOUSE - VPS House Technology Group LLC | 15.9K | 74 | 99 |
| AS31763US | BCIU - Berks County Intermediate Unit | 15.9K | — | 16 |
| AS16832US | SECOM-1 - Secom, Inc | 15.9K | 65.5K | 6 |
| AS393789US | CENTURYLINK-CHIA-PROJECT - CenturyLink Communications, LLC | 15.9K | — | 53 |
| AS54434US | WNMC - WNM Communications | 15.9K | — | 13 |
| AS26785US | NETWURX-AS - Netwurx LLC | 15.9K | 65.5K | 7 |
| AS18435US | THEJUNCTION - The Junction Internet, LLC | 15.9K | — | 21 |
| AS26129US | HOLLYWOOD-CENTER - Sunset Las Palmas Entertainment Properties, LLC | 15.6K | — | 30 |
| AS26410US | PTPA - Point To Point Access.Com | 15.6K | — | 31 |
| AS2731US | HORIZONTELCOM - Infinity Fiber LLC | 15.6K | — | 11 |
| AS16941US | CENTURYLINK-LEGACY-FUSEPOINT-CTS-CANADA-POP - CenturyLink Communications, LLC | 15.6K | — | 9 |
| AS6295US | LUNAVI-WA - Lunavi, Inc. | 15.6K | 4.1K | 11 |
| AS17216US | DC74-AS - DC74 LLC | 15.6K | 65.5K | 21 |
| AS30060US | VERISIGN-ILG1 - VeriSign Infrastructure & Operations | 15.6K | 9 | 55 |
| AS23393US | NUCDN - NuCDN LLC | 15.6K | 65.5K | 24 |
| AS10750US | MARK-TWAIN - Mark Twain Rural Telephone Co. | 15.6K | 65.5K | 18 |
| AS396319US | US-INTERNET-396319 - Oxylabs | 15.6K | 1M | 17 |
| AS8052US | TWC-8052-PEAKVIEW - Charter Communications Inc | 15.6K | 16 | 22 |
| AS397074US | TJXCOS-CORP-ASN - Marshalls | 15.6K | — | 45 |
| AS400519US | PLAYIT-GG - Developed Methods LLC | 15.6K | 1.1K | 97 |
| AS26229US | US-SEC - U.S. Securities & Exchange Commission | 15.6K | 1 | 32 |
| AS30238US | AS-IRONP-VEGA - Cisco Systems Ironport Division | 15.4K | 4 | 64 |
| AS36514US | FLORIDALEGISLATURE - Florida Legislature | 15.4K | — | 29 |
| AS15250US | USFAMILY-ASN - Metronet | 15.4K | — | 6 |
| AS20222US | PLTE - Plant Telephone Company | 15.4K | 65.5K | 30 |
| AS22717US | HALLIBURTON - Halliburton Company | 15.4K | — | 21 |
| AS11325US | AS11325 - Altus Communications Inc. | 15.4K | — | 10 |
| AS20258US | ANALOG-DEVICES - Analog Devices, Inc. | 15.4K | — | 43 |
| AS36443US | AUNALYTICS-INC - Aunalytics, Inc | 15.4K | — | 20 |
| AS25715US | SW-MN-BROADBAND - SOUTHWEST MINNESOTA BROADBAND SERVICES | 15.4K | — | 45 |
| AS54119US | WHITESKY-COMMUNICATIONS-2 - WhiteSky Communications, LLC. | 15.4K | — | 59 |
| AS36459US | GITHUB - GitHub, Inc. | 15.4K | 524.3K | 26 |
| AS206943US | EANCENTER EANCENTER TELECOM LLC | 15.4K | — | 13 |
| AS16857US | CENTEX - Central Texas Telecommunications | 15.4K | — | 29 |
| AS63186US | CALLONE-1 - Call One Inc. | 15.4K | — | 35 |
| AS46433US | ADF01 - EBOUNDHOST.com | 15.4K | — | 60 |
| AS36324US | VOSTROM-PUBLIC - VOSTROM | 15.4K | 2 | 11 |
| AS33247US | COASTAL-BGP - COASTAL TELCO SERVICES, INC. | 15.4K | — | 7 |
| AS11192US | SMART-CITY-HQ - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 15.4K | — | 26 |
| AS33227US | BLUEBRIDGE-NETWORKS - Blue Bridge Networks | 15.1K | — | 7 |
| AS21699US | IO - IO INC | 15.1K | 16.4K | 58 |