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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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. | 218.1M | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,219 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS402171US | GW-ALB-01 - Glitch Works, LLC | 256 | 1 | 2 |
| AS401736US | LILYNET - Project Daylily | 256 | 4 | 5 |
| AS6245US | NETWORK-SOLUTIONS - InterNIC Registration Services | 256 | — | 1 |
| AS20331US | AS-20331 - Onity Group Inc. | 256 | — | 1 |
| AS402028US | ZEPHYR-BROADBAND - Zephyr Broadband, LLC | 256 | 8.2K | 3 |
| AS36197US | COMPUTER-DATA-INC - Computer Data, Inc. | 256 | — | 1 |
| AS46808US | PSA-ASN-01 - Pueblo of Santa Ana | 256 | — | 1 |
| AS395665US | EDFINANCIAL-SERVICES-LLC - EDFINANCIAL SERVICES, LLC | 256 | — | 1 |
| AS394960US | WORKSIGHTED - Worksighted Inc | 256 | — | 1 |
| AS396127US | SUCCESS-ACADEMIES - Success Academy Charter Schools Inc. | 256 | — | 1 |
| AS399298US | HEALTHAXIS-AS - HealthAxis Group, LLC | 256 | — | 1 |
| AS19896US | AS-ALBROHOLDINGS-1 - Albro Holdings LLC | 256 | 1 | 2 |
| AS398556US | MCDUSASN01 - McDonald's Corporation | 256 | — | 1 |
| AS395353US | RRCC - Red River Computer Co., Inc. | 256 | — | 1 |
| AS19426US | HARRIS-COUNTY-ESD11-01 - Harris County ESD 11 Mobile Healthcare | 256 | — | 1 |
| AS55287US | OKLO - Oklo Inc. | 256 | — | 1 |
| AS6290US | ALASCOM - AT&T Alascom, Inc. | 256 | — | 1 |
| AS27396US | ASSOCI-BR-AS1 - Associated Grocers | 256 | — | 1 |
| AS30495US | MTS-LLC - MTS | 256 | — | 1 |
| AS395707US | CEJ-COMPUTER - CEJ Computer Business Systems, LLC | 256 | — | 1 |
| AS63451US | STONE-113 - Stoneridge, Inc. | 256 | — | 1 |
| AS219118US | MIA-AI MIA AI Holdings Inc | 256 | — | 1 |
| AS29697US | BEEKS-AS - BeeksFX VPS USA Inc. | 256 | — | 1 |
| AS21867US | LIGHTPATH-COLUMBUS - Cablevision Lightpath LLC | 256 | — | 1 |
| AS21790US | TCABH-AS - The Church at Brook Hills | 256 | 16 | 2 |
| AS397252US | STL-ASN-01 - Summitt Trucking, LLC | 256 | — | 1 |
| AS397169US | FFFCU - Firefighters First Federal Credit Union | 256 | — | 1 |
| AS15070US | EDGELP - Edgestream Partners, L.P. | 256 | — | 1 |
| AS3408US | AMC-NETWORKS - Rainbow Media Holdings LLC | 256 | — | 1 |
| AS397261US | ENDELL-ST - H CLUB LOS ANGELES | 256 | — | 1 |
| AS395680US | C05-WAN - Clark Associates, Inc. | 256 | 1 | 2 |
| AS19408US | WDS-DENTAL - Western Dental | 256 | — | 1 |
| AS16770US | ASTGEN - Astoria Generating Company, L.P. | 256 | — | 1 |
| AS53882US | COMMUNITECT - Communitect, Inc | 256 | — | 1 |
| AS394704US | GC-CA4 - GOR CORPORATION | 256 | — | 1 |
| AS399819US | LAER-AS-AUS1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS30293US | SOUTHCO-AS30293 - SOUTHCO INC | 256 | — | 1 |
| AS399810US | LAER-AS-AMS1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS12265US | R2G-1 - Transaction Network Services, Inc. | 256 | — | 1 |
| AS63403US | AS-AFILIAS-LAX1 - Afilias, Inc. | 256 | 1 | 2 |
| AS401069US | GLOVISAL-01 - Glovis Alabama | 256 | — | 1 |
| AS1523US | DNIC-ASBLK-01522-01526 - Headquarters, USAISC | 256 | — | 1 |
| AS394248US | S1-SUWANEE-DC - SiteOne Landscape Supply | 256 | — | 1 |
| AS393992US | TOWNOFBROOKHAVEN - Town of Brookhaven | 256 | — | 1 |
| AS25642US | SPIDERHOST - The Frohman Group Inc. | 256 | — | 1 |
| AS396916US | FLEETPRIDE - FleetPride, Inc. | 256 | — | 1 |