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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,263 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 641 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,336 |
| 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.
32,247 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. | 44.8M | 2,004 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,350 |
| 1.5K |
| 3 |
| 6 |
| AS19880US | REALCOMPII - REALCOMP II LTD. | 1.5K | — | 6 |
| AS17123US | TEAM-HEALTH - Team Health, Inc. | 1.5K | — | 6 |
| AS20213US | GIFFORD-WIRELESS - Gifford Wireless Inc | 1.5K | — | 6 |
| AS17203US | BMTC-01 - Beresford Municipal Telephone Company | 1.5K | — | 6 |
| AS32313US | BIGNETWORK - Big Network, Inc. | 1.5K | 65.5K | 4 |
| AS53928US | FORTINET-53928 - Fortinet Inc. | 1.5K | — | 6 |
| AS11892US | PEARSON-NA - NCS Pearson Inc. | 1.5K | — | 3 |
| AS22238US | DARPA - Defense Advanced Research Projects Agency(DARPA) | 1.5K | — | 6 |
| AS23013US | FORTANIX - Fortanix | 1.6K | — | 20 |
| AS18898US | VESTA-CORP - Vesta Corporation | 1.7K | — | 7 |
| AS21778US | NET-DIDATA-NY - Dimension Data North America, Inc. | 1.7K | 1 | 12 |
| AS400686US | WWEST-CORE-GRWA-01 - WAHKIAKUM WEST TELEVISION, INC. | 1.8K | 65.6K | 10 |
| AS10325US | INGRAMMICRO - Ingram Micro Inc. | 1.8K | — | 4 |
| AS36433US | AS-BCLLP - Bryan Cave LLP | 1.8K | — | 7 |
| AS393499US | ONLINE-TECH-LLC3 - Otava, LLC | 1.8K | — | 4 |
| AS372US | AS372 - National Aeronautics and Space Administration | 1.8K | — | 5 |
| AS53975US | WAM - WESTERN ASSET MANAGEMENT COMPANY | 1.8K | — | 7 |
| AS394984US | FDBL-NETWORK - Fragomen, Del Rey, Bernsen & Loewy, LLP | 1.8K | — | 7 |
| AS394142US | AVIDBIT-SLC - AvidBit | 1.8K | — | 7 |
| AS14011US | DESIGNDATA - Design Data Systems, Inc. | 1.8K | — | 6 |
| AS14895US | LAWSON-SOFTWARE - Lawson Software | 1.8K | — | 3 |
| AS18959US | RP-368-18959 - Radia Inc., PS | 1.8K | — | 4 |
| AS53561US | FASTER-CAJUN-LLC - Faster Cajun Networks | 1.8K | — | 5 |
| AS20406US | BRASLINK - Braslink Network Inc | 1.8K | — | 4 |
| AS396973US | DHS-39H - Department of Homeland Security | 1.8K | 2 | 9 |
| AS394898US | HCDL-PITTSBURGH-DATA-CENTER - H5 Data Centers | 1.8K | 256 | 8 |
| AS21758US | MODINE-MANUFACTURING - Modine Manufacturing Company | 1.8K | — | 6 |
| AS397866US | ELN-ATL-HQ - EarthLink | 1.8K | — | 7 |
| AS26337US | OIS1 - Oso Grande IP Services, LLC | 1.8K | — | 7 |
| AS399510US | GEODIS-AMS - Geodis Logistics LLC | 1.8K | — | 7 |
| AS20352US | LHS - Legacy Health | 1.8K | — | 7 |
| AS393362US | CDC-01 - Central Dynamics | 1.8K | — | 6 |
| AS19367US | CAROUSEL-INDUSTRIES - Carousel Industries of North America, LLC | 1.8K | — | 7 |
| AS20019US | PEC-TEL - Parwan Electronics Corporation | 1.8K | — | 7 |
| AS63044US | CMC - Commercial Metals Company | 1.8K | — | 7 |
| AS40187US | GIGSTREEM-WARP2BIZ - GiGstreem | 1.8K | — | 7 |
| AS21799US | MWDSC - Metropolitan Water District of Southern California | 1.8K | — | 7 |
| AS32342US | GENEXSERVICES - Genex Services Inc | 1.8K | — | 6 |
| AS10694US | MONST-2AS - Monster Worldwide, Inc. | 1.8K | — | 5 |
| AS393936US | TULSA-COUNTY - Metropolitan Tulsa Electronic Network | 1.8K | — | 5 |
| AS399870US | BYNARIUM-BACKBONE - BYNARIUM LLC | 1.8K | 773 | 15 |
| AS26215US | XCLUTEL - Xclutel LLC | 1.8K | — | 3 |
| AS36221US | ESOSOFT - Esosoft Corporation | 1.8K | 8 | 15 |
| AS18816US | ANDREWCORP-AOP - CommScope Technologies LLC | 1.8K | — | 7 |
| AS395898US | TND - TND, LLC | 1.8K | 4 | 11 |
| AS30418US | SUMT-CMH - SumTotal Systems, Inc. | 1.8K | — | 4 |