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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 23,731 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,144 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,838 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,313 |
| 16.1K |
| 65.8K |
| 19 |
| AS63172US | VENTURE-COMM - Venture Communications Cooperative | 16.1K | 65.5K | 19 |
| AS4208US | THE-ISERV-COMPANY - The Iserv Company, LLC | 16.1K | — | 6 |
| AS33490US | COMCAST-33490 - Comcast Cable Communications, LLC | 16.1K | 60 | 96 |
| AS16628US | DEDICATED-FIBER-COMMUNICATIONS - DedFiberCo | 16.1K | 1 | 64 |
| AS200598US | lunarnaut Lunarnaut, LLC | 16.1K | — | 29 |
| AS15130US | USDOJ-GOV - U. S. Department of Justice | 16.1K | 4.1K | 41 |
| AS53939US | DLR-SEATTLE - Telx | 16.1K | 4.4K | 11 |
| AS19137US | EPSILON-INTERACTIVE - Epsilon Interactive LLC | 16.1K | — | 36 |
| AS397379US | NLI-ASN-01 - Next Level Connect | 16.1K | — | 28 |
| AS53766US | VMWARE-SASE - Arista Networks, Inc. | 16.1K | 22 | 62 |
| AS11233US | GORGE-NETWORKS - Gorge Networks LLC | 16.1K | 65.5K | 10 |
| AS18435US | THEJUNCTION - The Junction Internet, LLC | 15.9K | — | 21 |
| AS399468US | EG-CORE-INFRA - EngineFresh LLC | 15.9K | — | 15 |
| AS54434US | WNMC - WNM Communications | 15.9K | — | 13 |
| AS23131US | STARLAN - STARLAN TELECOM CORP. | 15.9K | — | 8 |
| AS29770US | THE-INTERNET-SUBWAY - The Internet Subway | 15.9K | 257 | 27 |
| AS31763US | BCIU - Berks County Intermediate Unit | 15.9K | — | 16 |
| AS26809US | SCOTTEPB - Scottsboro Electric Power Board | 15.9K | 65.5K | 23 |
| AS15147US | DHSINETNOC - DEPARTMENT OF HOMELAND SECURITY | 15.9K | 65.5K | 17 |
| AS19693US | CENTRILOGIC-ASN - Centrilogic, Inc. | 15.9K | 65.5K | 26 |
| AS16832US | SECOM-1 - Secom, Inc | 15.9K | 65.5K | 6 |
| AS7799US | OLYPENASN - Olypen, Inc. | 15.9K | — | 11 |
| AS12261US | DEKALB - DTC Communications, Inc. | 15.9K | 65.5K | 30 |
| AS26785US | NETWURX-AS - Netwurx LLC | 15.9K | 65.5K | 7 |
| AS19156US | REDBOLT-AS-01 - Continental Divide Electric Cooperative, Inc | 15.9K | 65.5K | 34 |
| AS27047US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 15.9K | — | 53 |
| AS3949US | NTTA-3946 - NTT America, Inc. | 15.9K | 1 | 48 |
| AS26129US | HOLLYWOOD-CENTER - Sunset Las Palmas Entertainment Properties, LLC | 15.6K | — | 30 |
| AS8052US | TWC-8052-PEAKVIEW - Charter Communications Inc | 15.6K | 16 | 22 |
| AS26229US | US-SEC - U.S. Securities & Exchange Commission | 15.6K | 1 | 32 |
| AS393789US | CENTURYLINK-CHIA-PROJECT - CenturyLink Communications, LLC | 15.6K | — | 52 |
| AS23393US | NUCDN - NuCDN LLC | 15.6K | 65.5K | 24 |
| AS2731US | HORIZONTELCOM - Infinity Fiber LLC | 15.6K | — | 11 |
| AS16941US | CENTURYLINK-LEGACY-FUSEPOINT-CTS-CANADA-POP - CenturyLink Communications, LLC | 15.6K | — | 9 |
| AS397074US | TJXCOS-CORP-ASN - Marshalls | 15.6K | — | 45 |
| AS396319US | US-INTERNET-396319 - Oxylabs | 15.6K | 1M | 17 |
| AS10750US | MARK-TWAIN - Mark Twain Rural Telephone Co. | 15.6K | 65.5K | 18 |
| AS17216US | DC74-AS - DC74 LLC | 15.6K | 65.5K | 21 |
| AS6295US | LUNAVI-WA - Lunavi, Inc. | 15.6K | 4.1K | 11 |
| AS922US | GOCODEIT-CORP - GoCodeIT Inc | 15.6K | 42 | 57 |
| AS11192US | SMART-CITY-HQ - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 15.4K | — | 26 |
| AS36514US | FLORIDALEGISLATURE - Florida Legislature | 15.4K | — | 29 |
| AS25715US | SW-MN-BROADBAND - SOUTHWEST MINNESOTA BROADBAND SERVICES | 15.4K | — | 45 |
| AS20258US | ANALOG-DEVICES - Analog Devices, Inc. | 15.4K | — | 43 |
| AS15250US | USFAMILY-ASN - Metronet | 15.4K | — | 6 |
| AS30238US | AS-IRONP-VEGA - Cisco Systems Ironport Division | 15.4K | 4 | 64 |