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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 25,270 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,323 |
| 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.
32,193 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,900 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,009 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.5M | 4,230 |
| 5.1K |
| 65.5K |
| 3 |
| AS54847US | CUSTER-TELEPHONE - Custer Telephone Cooperative, Inc. | 5.1K | 65.5K | 18 |
| AS394225US | GRAND-ASN - Grand Telephone Company, Inc. | 5.1K | — | 3 |
| AS5088US | AS5088 - FOX CORPORATION | 5.1K | — | 5 |
| AS14725US | AS14725 - Crawford & Company | 5.1K | — | 14 |
| AS33354US | AS33354 - PORT AUTHORITY OF New York and New Jersey | 5.1K | — | 4 |
| AS20224US | COLUMBIA-ENERGY-LLC - Columbia Energy L.L.C | 5.1K | 1 | 8 |
| AS18438US | BROWNB - Brown Brothers Harriman & Company | 5.1K | — | 20 |
| AS15121US | CALTEL-COM - Calaveras Internet Company | 5.1K | 65.5K | 18 |
| AS32726US | LIBERTY - Liberty University | 5.1K | 272 | 15 |
| AS4972US | UPS-AS4972 - UNITED PARCEL SERVICE | 5.1K | — | 17 |
| AS62648US | MBLINKTX-ASN - City of Mont Belvieu | 5.1K | — | 4 |
| AS19578US | TRUENET-INC - Truenet, Inc. | 5.1K | — | 2 |
| AS11245US | AS11245 - The Goodyear Tire & Rubber Company | 5.1K | — | 20 |
| AS13356US | PANORA - Panora Telco | 5.1K | 65.5K | 16 |
| AS13871US | TELEBYTE-NW - Telebyte NW | 5.1K | — | 20 |
| AS40619US | CLARK-COUNTY-NEVADA - Clark County, Nevada | 5.1K | — | 5 |
| AS395717US | BLUEARCHIVE-ZONE-1 - Wasabi Technologies, Inc. | 5.1K | — | 20 |
| AS395425US | FANDANGO - Fandango Media, LLC | 5.1K | — | 4 |
| AS22800US | IRVINE-ICT - IRVINE COMMUNITY TELEVISION | 5.1K | — | 2 |
| AS22332US | WDC-US - Western Digital Corporation | 5.1K | — | 14 |
| AS26459US | TTD-ASN-01 - The Trade Desk, Inc. | 5.1K | 2 | 22 |
| AS32952US | ZC38-AS2 - zColo | 5.1K | — | 3 |
| AS55091US | LAYER-3-COMMUNICATIONS - Layer 3 Communications | 5.1K | 69.9K | 13 |
| AS14106US | TAYLOR-ELECTRICCOOPERATIVE-INC - Taylor Electric Cooperative Inc | 5.1K | 4.1K | 5 |
| AS399313US | LOWELL-INT - TUFTS ASSOCIATED HEALTH PLANS, INC. | 5.1K | — | 6 |
| AS10632US | PSE-AS - Puget Sound Energy | 5.1K | — | 12 |
| AS21549US | IRON-MOUNTAIN - Iron Mountain Inc | 5.2K | — | 17 |
| AS19701US | YODLEE - Yodlee Inc. | 5.4K | — | 18 |
| AS14689US | ENFUSION-ASN - Enfusion LTD. LLC | 5.4K | — | 11 |
| AS399296US | RD-BM - Rackdog, LLC | 5.4K | 1 | 21 |
| AS5726US | INTERWORLD - InterWorld Communications, Inc. | 5.4K | — | 18 |
| AS394330US | GIGFIRE - LTD Broadband LLC | 5.4K | 4.4K | 19 |
| AS54142US | WHITE-CLOUD-COMMUNICATIONS - White Cloud Communications US, LLC | 5.4K | — | 6 |
| AS205993US | CAFETECNOLOGIA Cafe Tecnologia LLC | 5.4K | — | 12 |
| AS965US | WEBHOSTINGHOLDINGS - Webhosting Holdings LLC | 5.4K | 16.4K | 23 |
| AS396185US | PEMTEL - GILES-CRAIG COMMUNICATIONS INC. | 5.4K | — | 13 |
| AS22065US | LFL-9 - LPL Financial | 5.4K | — | 17 |
| AS20097US | CITY-OF-TULSA - City of Tulsa | 5.4K | — | 3 |
| AS20264US | WEBAIR-INTERNET-2 - Webair Internet Development Company Inc. | 5.4K | 65.5K | 20 |
| AS29949US | BFS-49-29949 - Broadridge Financial Solutions, Inc. | 5.4K | — | 6 |
| AS54744US | IDS-AS1 - EPLUS, Inc. | 5.4K | — | 7 |
| AS31872US | VANTIVE-HEALTHCARE - Vantive Health | 5.4K | — | 21 |
| AS40911US | L2NC-AS - L2Networks Corp. | 5.4K | — | 6 |
| AS53833US | ICISD - Ionia County ISD | 5.4K | — | 10 |
| AS13431US | MILLENNIUM-AS - Millennium Partners, L.P. | 5.4K | — | 18 |
| AS12154US | INFOUSA - DATA AXLE, INC | 5.4K | — | 13 |