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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 | 24,555 |
| 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 |
| 232 |
| 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 | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| 512 |
| 65.5K |
| 3 |
| AS53709US | SPORTING-KC - ONGOAL, LLC | 512 | — | 1 |
| AS401587US | TEXTNOW-CUST-01 - TextNow Inc. | 512 | 514 | 6 |
| AS396326US | ASN-WATCO-IPV4-DC - Watco Companies, LLC. | 512 | — | 2 |
| AS399795US | INFINITY-TECH-KC1 - Infinity Technology Services LLC | 512 | — | 1 |
| AS16392US | PIONEER-STANDARD - Agilysys Inc. | 512 | — | 2 |
| AS402427US | NXST-AS402427 - Nexstar | 512 | — | 2 |
| AS62891US | ASN-CHIEF-1 - CHIEF INDUSTRIES, INC. | 512 | — | 1 |
| AS396481US | SKYHI-1 - SkyHi Broadband | 512 | — | 2 |
| AS394647US | AS394647 - Crown Castle Fiber LLC | 512 | — | 1 |
| AS33297US | VEGAS - Sumofiber | 512 | 2 | 4 |
| AS394784US | MEEI-AS - Massachusetts Eye and Ear Infirmary | 512 | — | 2 |
| AS36807US | SAINTFRANCIS-TULSA - Saint Francis Health System | 512 | — | 1 |
| AS36649US | RIUS - RIVERSTONE INTERNATIONAL U.S., LLC | 512 | — | 2 |
| AS33496US | ISC - ISC CONSTRUCTORS, LLC | 512 | 1 | 3 |
| AS1857US | DISN-PILOTNET3 - RTX BBN Technologies, Inc. | 512 | — | 2 |
| AS36667US | PHIBRO-ANIMAL-HEALTH-CORPORATION-ARIN - Phibro Animal Health Corporation | 512 | 18 | 5 |
| AS21876US | THE-SAVE-MART-COMPANIES - The Save Mart Companies | 512 | — | 2 |
| AS34553US | NATHANSALES - Packetframe | 512 | 2 | 4 |
| AS25758US | MEI - MIDWEST EXPRESS INC | 512 | — | 2 |
| AS26372US | VERMONTINFORMATION - Vermont Information Processing | 512 | — | 2 |
| AS209177US | ArnoldPorter Arnold & Porter Kaye Scholer LLP | 512 | — | 1 |
| AS399524US | SOUNDLINE-01 - SoundLine Communications | 512 | — | 2 |
| AS395436US | HUH-ASN-01 - Howard University Hospital | 512 | — | 2 |
| AS22266US | KNIGHT-INC - KNIGHT TRANSPORTATION | 512 | — | 2 |
| AS27208US | DISCOVERY-ENERGY-LLC-01 - Discovery Energy, LLC | 512 | — | 2 |
| AS53697US | MOHELA - MOHELA | 512 | — | 2 |
| AS400313US | APOG-UNA - Apogee Telecom Inc. | 512 | — | 1 |
| AS12209US | GIROSOL - Girosol, Corp. | 512 | — | 2 |
| AS18646US | BITMAX - Bitmax, Inc. | 512 | 1 | 3 |
| AS6498US | INTRADO-CORP - West Technology Group, LLC | 512 | — | 2 |
| AS46084US | ASRCFH-NET - ASRC FEDERAL HOLDING COMPANY, LLC | 512 | — | 2 |
| AS36244US | SVEC - Shenandoah Valley Electric Cooperative | 512 | — | 1 |
| AS63263US | RETS-NA-GCC - RELX inc. | 512 | — | 2 |
| AS46501US | WATCHGUARD-TECHNOLOGIES-INC - WatchGuard Technologies, Inc. | 512 | 1 | 3 |
| AS400480US | G12-CORE-ASN - Momentum Telecom, Inc. | 512 | — | 2 |
| AS40207US | AS40207 - Cape Cod Healthcare Inc. | 512 | — | 2 |
| AS395362US | 8X8-AS-1 - 8x8, Inc. | 512 | — | 2 |
| AS22263US | NRHSAS - Norman Regional Health System | 512 | — | 1 |
| AS30644US | PATH-NETWORK-BYOIP - Path Network, Inc. | 512 | — | 2 |
| AS395332US | GINKOID - ginkoid LLC | 512 | — | 2 |
| AS17124US | SOUTHARK - SouthArk | 512 | — | 2 |
| AS23198US | RRTS - Roadrunner Transportation Services, Inc. | 512 | — | 2 |
| AS19521US | AS-EPOXYTEL-US - Epoxytel Networks LLC | 512 | 1 | 3 |
| AS397827US | ALLEGACY - ALLEGACY FEDERAL CREDIT UNION | 512 | — | 2 |
| AS396323US | JCFS - Johnson Controls Federal Systems Inc. | 512 | — | 2 |
| AS25964US | HCBE-17 - Henry County Board of Education | 512 | — | 2 |