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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. | 218M | 24,346 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 512 |
| — |
| 2 |
| AS400157US | ENL-ASN-EASTMAN-CHEMICAL - Eastman Chemical Company | 512 | — | 2 |
| AS396388US | WOOFY-AS - Woofy | 512 | 1 | 3 |
| AS13747US | DMIC-ASN1 - DONEGAL MUTUAL INSURANCE | 512 | — | 2 |
| AS400372US | ID-CL-01 - Murphy's Bowl LLC | 512 | — | 2 |
| AS36723US | WAUKESHA-COUNTY-INTERNET - Waukesha County | 512 | — | 2 |
| AS400357US | SOUTHCOAST-HEALTH-01 - Southcoast Health System, Inc. | 512 | — | 2 |
| AS32504US | INTELLETRACE - Intelletrace | 512 | 1 | 3 |
| AS395715US | COMSOL - Communication Sales & consulting, LLC | 512 | — | 1 |
| AS23045US | ASKOH1 - Kohler Co. | 512 | — | 2 |
| AS27270US | SFM - SFM Mutual Insurance Company | 512 | — | 2 |
| AS10469US | RFGNET - The Ridgefield Group, Inc. | 512 | — | 1 |
| AS47754US | SQP-AS Squarepoint OPS LLC | 512 | — | 2 |
| AS46843US | TGNA-KTVB - TEGNA Inc. | 512 | — | 2 |
| AS11931US | NYC-EDC-165 - NYCEDC | 512 | — | 2 |
| AS54143US | HEHENET - i9 Technologies | 512 | 65.5K | 3 |
| AS32805US | O365-ENABLEMENT - Securitas Security Services USA, Inc | 512 | — | 2 |
| AS46140US | CSI - CAMP SYSTEMS INTERNATIONAL | 512 | — | 2 |
| AS32108US | ASN-WSECU - WSECU | 512 | — | 2 |
| AS54256US | VELOCITY-COMMUNICATIONS - Velocity Communications Inc. | 512 | 65.5K | 3 |
| AS19961US | STARGAS-NET-1 - Star Gas Partners, LP | 512 | — | 2 |
| AS36095US | FSBANK-1-36095 - FIRST SECURITY BANK | 512 | — | 2 |
| AS401229US | STAPLES-EQUINIX-CENTRAL - Staples, Inc | 512 | — | 2 |
| AS399288US | WEATHERTAP - WEATHERTAP INCORPORATED | 512 | — | 2 |
| AS398538US | HERITAGE-BROADBAND-LLC - HERITAGE BROADBAND, LLC | 512 | — | 2 |
| AS398145US | MHM-DATACENTER-01 - Centurion Group, Inc. | 512 | — | 2 |
| AS393613US | VACU-ASN-1 - Virginia Credit Union, Inc. | 512 | — | 2 |
| AS10779US | STEPBROBD - StepBroBD, Inc. | 512 | 4.1K | 3 |
| AS55295US | NEWDAYASN - New Day Broadband One LLC | 512 | — | 1 |
| AS14736US | CITY-AS14736 - City of Kansas City Missouri | 512 | — | 2 |
| AS398109US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 512 | 2 | 4 |
| AS398154US | ASCOTFL - City of Tallahassee | 512 | — | 2 |
| AS53902US | FLUXORUS-NETWORKS - Fluxorus Networks | 512 | 256 | 3 |
| AS63167US | TGNA-KING-KONG - TEGNA Inc. | 512 | — | 2 |
| AS46658US | TRANSMON119 - Transmontaigne Product Services, Inc. | 512 | — | 2 |
| AS36860US | BANCFIRST - BancFirst | 512 | — | 2 |
| AS23257US | IBMCCH-DAL-EQU - IBM | 512 | — | 2 |
| AS393658US | ATYPON - Atypon Systems, Inc. | 512 | 1 | 2 |
| AS23397US | CME-VEN-AS23397 - Chicago Board of Trade | 512 | — | 2 |
| AS36765US | WLKY-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS401661US | EMBNEX-AS - EMBNEX, LLC | 512 | 65.5K | 3 |
| AS400479US | BOXXTECH-ASN - Boxx Technologies LLC | 512 | — | 2 |
| AS40656US | COMETC1 - Communications Etc., Inc. | 512 | 65.5K | 3 |
| AS18937US | NMC - National Monitoring Center | 512 | — | 2 |
| AS23182US | GREENBRIER-AS - THE GREENBRIER COMPANIES, INC. | 512 | — | 1 |
| AS394149US | VI-CONCEPTS - VI Concepts, Inc. | 512 | 16 | 2 |
| AS400503US | DAN-SMITH-LLC - Dan Smith LLC | 512 | 32 | 4 |