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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) | 227.7M | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS210305US | FRR-TESTLAB Network Device Education Foundation Inc | 256 | 1 | 2 |
| AS62789US | PDQATS-AS - PDQ Enterprises LLC | 256 | — | 1 |
| AS402018US | CONCENTRATE-01 - Concentrate AI, Inc. | 256 | 256 | 2 |
| AS4902US | CI-CCASN - CONSERVATION INTERNATIONAL FOUNDATION | 256 | — | 1 |
| AS400297US | XAI - X.AI | 256 | — | 1 |
| AS395001US | STATEOFMAINE-ASN1 - State of Maine | 256 | — | 1 |
| AS397761US | CISD-ASNNUMBER-01 - CORSICANA ISD | 256 | — | 1 |
| AS32403US | THE-HERITAGE-FOUNDATION - The Heritage Foundation | 256 | — | 1 |
| AS401253US | COG-MS - City of Gulfport | 256 | — | 1 |
| AS398201US | GRAHAM-HEALTH-SYSTEM-IL - Graham Health System | 256 | — | 1 |
| AS399708US | NCWC-ARIN-ASN - North Carolina Wesleyan College | 256 | — | 1 |
| AS197139US | T-MAN-AS T-Man Software LLC | 256 | — | 1 |
| AS398240US | IDENTIDAD - Identidad Telecom | 256 | — | 1 |
| AS401762US | FILTERED NETWORKS - Filtered Networks | 256 | — | 1 |
| AS4354US | ERM-026 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS21771US | NUCOR - Nucor | 256 | — | 1 |
| AS399371US | KIRKLAND-ELLIS-BN - Kirkland & Ellis LLP | 256 | — | 1 |
| AS398785US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 256 | — | 1 |
| AS13423US | GALVESTONISD - GALVESTON ISD | 256 | — | 1 |
| AS401750US | ITSC-DCN - IT Solutions Consulting, LLC | 256 | — | 1 |
| AS54786US | ACT-ASN - ACT Education Corp. | 256 | — | 1 |
| AS53750US | NEUMANN-UNIVERSITY - Neumann University | 256 | — | 1 |
| AS26475US | FLAGLER - Flagler College | 256 | — | 1 |
| AS23245US | EADS-NORTH-AMERICA--AS01 - Airbus Defense and Space, Inc. | 256 | — | 1 |
| AS29947US | KIRKLAND-ELLIS-OC - Kirkland & Ellis LLP | 256 | — | 1 |
| AS400172US | RACKORBIT - RackOrbit, LLC | 256 | — | 1 |
| AS39956US | CCPASN - Community Care Physicians, P.C. | 256 | — | 1 |
| AS26365US | IOT-PRIMARY - Image One Technologies | 256 | 1 | 2 |
| AS54682US | CFCU01 - Citadel Federal Credit Union | 256 | — | 1 |
| AS23879US | YAHOO-INY - INY Edge site | 256 | 2 | 3 |
| AS399386US | LCOUNTY-ASN - Laramie County Government | 256 | — | 1 |
| AS394834US | CENGAGE-NYNYC - Cengage Learning, Inc. | 256 | — | 1 |
| AS397862US | CCFCU - Catalyst Corporate Federal Credit Union | 256 | — | 1 |
| AS26645US | ODECASN - Old Dominion Electric Cooperative | 256 | — | 1 |
| AS395608US | EA-CHATSWORTH - Electronic Arts, Inc. | 256 | — | 1 |
| AS27574US | NTMWD-NORTH-TEXAS-MUNICIPAL-WATER-DISTRICT - North Texas Municipal Water District | 256 | — | 1 |
| AS11029US | NETVATA - NetVata, LLC | 256 | 65.5K | 2 |
| AS401747US | MOPS-ASN-1 - MODERNOPS | 256 | — | 1 |
| AS1052US | COEUR-D-ALENE-TRIBE - Coeur d' Alene Tribe | 256 | 65.5K | 2 |
| AS397055US | LNH-ASN-01 - 12-182-8156 | 256 | — | 1 |
| AS53357US | DCSD - Douglas County School District RE.1 | 256 | — | 1 |
| AS394420US | SPOKANE-911 - SREC | 256 | — | 1 |
| AS395355US | ENVESTNET-PHI - ENVESTNET, INC | 256 | — | 1 |
| AS398931US | LS-ENTERPRISES - LS Enterprises | 256 | 1 | 2 |
| AS398874US | LOSTCREEKTECHASN-01 - Lost Creek Technology L.L.C. | 256 | 4.1K | 2 |
| AS209864US | NAIVE-NETWORK Zhaofeng Li | 256 | 6 | 7 |